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this network's entry on Paradigm's AMM fee challenge (paradigm.xyz/puzzles/amm) into the top 10. Ours is STACK, board 519.71 (29th); 10th is 524.66, 1st 528.40. Local paired gains transfer to the board (the last came in at 0.65 of local), so measure paired gains over STACK: 10th needs about +5.0. STACK = the `code` of https://api.imd.fun/artifacts/c33720874aa1285e9dc766540b8a90410118a8e8b840d949ea0dcc211bdb27c1, sha256 2eaafc7960e520b8a7fd322ec8afaff8fa677c730228a961efb509cc30b25719. It has 0 OutOfGas halts and peaks at 214k of the 250,000 afterSwap gas limit, so any candidate OOG call invalidates a result (count them with amm_sim_rs.gas_stats()).\nPrior goals (note 1): tuning inside STACK's fee family is worth hundredths and is capped near +1.2; fee rules written from scratch lost 18 to 83, mostly to arbitrage. New mechanisms are needed: spend items on ideas and on searches over whole rule families, not on re-tuning constants.\nSetup (Linux x86_64, seconds, no compiler): clone github.com/benedictbrady/amm-challenge at 6b6921f8d463314aa7c96234e1be25a25245f704 into your workspace (never /tmp), save the script below as scratch/setup.sh, run `sh scratch/setup.sh` once from the checkout root, prefix later commands with `. scratch/env.sh && `; on failure return blocked={step,error}, n 0. Check once: CH (https://raw.githubusercontent.com/ChengHua926/amm-challenge/d34a5199c59a4c44d5336a25f1436b4ae1f21104/contracts/src/Strategy.sol) on seeds 0..999 gives mean edge 525.5258821780834.\nMethod: each strategy alone against VanillaStrategy, amm_sim_rs.run_batch(X, VanillaStrategy, configs, 8), never two strategies in one market; configs per MatchRunner._build_configs (default_rng(seed): size, rate, sigma; price seed=seed, retail seed+1). Tune on 10000..999999; confirm once vs STACK on a fresh block from 5000000 up (>= 2,000 seeds), never reused. Return code, sha256, paired{n,mean_diff,se,worst}, gas{max_ok,oog}, and the retail and arb edge deltas.\nset -eu;R=$PWD/scratch;mkdir -p $R/tmp $R/bin $R/solcx\necho \"export TMPDIR=$R/tmp XDG_CACHE_HOME=$R/xc UV_CACHE_DIR=$R/uvc UV_PYTHON_INSTALL_DIR=$R/uvpy SOLCX_BINARY_PATH=$R/solcx VIRTUAL_ENV=$PWD/.venv PATH=$PWD/.venv/bin:$R/bin:\\$PATH\" >$R/env.sh;. $R/env.sh\ncommand -v uv >/dev/null||{ curl -LsSf https://github.com/astral-sh/uv/releases/latest/download/uv-x86_64-unknown-linux-gnu.tar.gz|tar --no-same-owner -xz -C $R/tmp;cp $R/tmp/uv-*/uv $R/bin/;}\nW=amm_sim_rs-0.1.0.post1-cp310-abi3-manylinux2014_x86_64.manylinux_2_17_x86_64.whl;curl -LsSf https://github.com/gtmcknight/amm-sim/releases/download/sim-6b6921f8/$W -o $R/$W\necho \"aedb68280aca34c110968f00148387c95885207913fb2cf19a1ab4c5cfd6887a  $R/$W\"|sha256sum -c -\nuv venv --python 3.12 .venv;uv pip install $R/$W numpy py-solc-x==2.1.0 pyrevm==0.3.7;uv pip install --no-deps -e .\npython -c \"import solcx;solcx.install_solc('0.8.24')\"\namm-match validate contracts/src/StarterStrategy.sol","parentJobId":null,"planHash":"73a8c28d26e73077cf1e3697422c35ac40b48f6df8695243e731812f01988960","previousHash":"0000000000000000000000000000000000000000000000000000000000000000","projectId":"e64e1149-e582-4058-afdd-d41f6f53789c","publication":{"commit":null,"deliveredAt":null,"repoUrl":null},"receiptIdentity":{"adapter":"0xde152afb7db5373f34876e1499fbd893a82dd336","chainId":1,"collection":"0x0000ec93127baa929e58e97dd0095a2bfb38ec1d","registry":"0x8004a169fb4a3325136eb29fa0ceb6d2e539a432"},"registry":"0xb6d0a187b050fa5bb0b87033a203f37becf4a775","research":[],"schema":"identitymd-work-v1","signals":[],"site":null,"snapshotHash":"1b5b2fbf2d66b60a13dc91b5d67031f2ed5633361aa9099b83aa72d230dfae71","state":"completed","submissions":[{"artifacts":[{"bytes":55855,"hash":"7322427b95805d2d17d6c2a78be725cf814b2ef29eccd042492708915f12ca0f","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e04-retail-state/items/b/result.json"},{"bytes":450,"hash":"8e8d2e048d268cfdaeb86d6df5fc6730111d70cc47edcc1b96f43c503d005b05","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e04-retail-state/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"75b4fcc4e4ca5d9b","findings":[],"hash":"007a9315ced90e38b765fe16af5b1ef802638cae4ccf04faf71247a97df80123","nodeId":"ea2dca0f-02e7-4819-91eb-db16290a0fe0","outcome":"completed","summary":"Created both required JSON files.\n\nAcross 512 seeds: **+0.09383 edge vs V10**, SE **0.01577**. Zero halts; maximum observed candidate afterSwap gas **202,468**.\n\nSolidity validation, JSON parsing, size limits, hashes, and source quotes passed. Tuning only; no board claim.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":3536896,"inputTokens":55541,"model":null,"outputTokens":21423,"runtime":"codex","turns":20,"wallClockMs":1289543}},{"artifacts":[{"bytes":63945,"hash":"a66f650cda7ce115f728e9584098306637c1698f4d0f55fed005481f611360bb","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e05-rs-search/items/c/result.json"},{"bytes":1804,"hash":"b6076ca43af1449abc67698f3c019e0b0ed3f8d252a7dafbd8c05463ccaa035d","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e05-rs-search/items/c/sources.json"}],"attempt":3,"bundleHash":null,"device":"918f8261a6fd589c","findings":[],"hash":"007e4bd72a6d49543677eb15fdb9097ef8b483e57f1d5dd3ea1c01249a7c7ef5","nodeId":"b8118b97-cf85-4986-9047-0aec9941505f","outcome":"completed","summary":"Both deliverables are written and verified. Nothing was placed outside the allowed item directory, and all tooling, the simulator checkout and caches live under test/scratch, which is discarded before upload, so the earlier path-violation and 22 MB bundle failures cannot recur.\n\n**Outcome of item c (retail-state search on V10, RS1 structure 2)**\n\n- The frozen candidate beats V10 on the 512 held-out seeds and also beats RS1 on the same seeds. Gains come from retail edge, partly paid back as arbitrage, as with RS1.\n- The effect is small, in line with the goal's note that in-family tuning yields hundredths to tenths, nowhere near the roughly +5 the board needs.\n\n| Held-out 725000..725511 (n=512) | mean_diff | se |\n|---|---|---|\n| frozen vs V10 | +0.133 | 0.023 |\n| frozen vs RS1 | +0.066 | 0.019 |\n| RS1 vs V10 | +0.068 | 0.017 |\n| retail edge delta vs V10 | +1.097 | 0.024 |\n| arb edge delta vs V10 | -0.963 | 0.012 |\n\n**What was done**\n\n- Setup from the pinned commit and wheel passed, including the StarterStrategy validation.\n- RS1 was rebuilt from its own generator with a matching sha256. RS1 with mix 0 equalled V10 exactly on all 32 parity seeds.\n- CMA-ES with numpy seed 13 and population 10 ran 7 generations and 70 evaluations in 1127 s of the 1200 s cap, each generation on its own 64-seed CRN block paired against V10. All 70 candidates were valid with zero OOG, afterSwap peak 201,930 and init 243,099.\n- The best 3 were re-checked on 724000..724255. Their search-block estimates roughly halved on re-check, because all three came from one unusually favourable block. The winner held +0.160 ± 0.032 and was frozen.\n- Frozen parameters: lambda mix near zero, size mix 0.074, activity weight 0.32, retention 0.948, rate scale 0.44, size scale 0.56, slope 60, correction cap at its 1.5x lower bound. The frozen code compiles under amm-match validate and rebuilds from the included generator source plus params to the reported sha256.\n\n**Files written**\n\n- artifacts/goal/batches/e05-rs-search/items/c/result.json, 63,945 bytes, with code, sha256, params, full 70-entry log, recheck, held-out, gas, generator source and notes. No board claim; all seeds are below 5,000,000.\n- artifacts/goal/batches/e05-rs-search/items/c/sources.json with 7 exact quotes from the RS1 and V10 artifacts and the pinned repository README.\n\nOne interpretation to flag: the brief's \"weight of the cleaned rate in the activity term\" was implemented as a blend of V10's activity EMA with the cleaned retail flow, rescaled by the EMA's steady-state constant so the two are in the same units. The note in result.json spells this out.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1819211,"cost":{"source":"runtime","usdMicros":4481170},"inputTokens":866,"model":"claude-fable-5-1","outputTokens":42382,"runtime":"claude","turns":37,"wallClockMs":2273563}},{"artifacts":[{"bytes":24713,"hash":"1f8470e35dd963b0bdc1454300e0765b0f97121498a70cc34a431b8be01cfdff","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-sticky-dev/items/a/result.json"},{"bytes":132,"hash":"8dfe78d760e09a67cdb93d0bd3ba4b2acce2422a313eb838862bc0951595083a","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-sticky-dev/items/a/sources.json"}],"attempt":2,"bundleHash":null,"device":"a0c8110b89bdae8a","findings":[],"hash":"017524ab0b52c13ac269e36c524fc4e08c5d6b124a644916c31543206a002617","nodeId":"236979c3-da0c-41e5-81b2-9fbd5f3839ac","outcome":"completed","summary":"Sticky deviation gives RS2 a small gain, about +0.28 edge per seed, far short of the ~+5 needed for the top 10. I also cut the protocol short for time, so treat this as a weak result. Simulations ran at about 1–2 seconds per seed here, and the full plan didn't fit in the time left.\n\n**What I built.** The generator adds a peak-held toxicity value in a new slot (slot 16): `sticky = max(tox, sticky·d^steps)`. That is blended into (i) the toxicity fee terms and (ii) the stale-side shift, each with its own weight. RS2 has no cubic toxicity term, so I read \"a multiplier on the cubic term\" as adding a new term, `c·toxSignal³`, which is 0 at the neutral setting. With both weights and `c` at 0, the generator returns RS2 unchanged, so it matched RS2 edge for edge on seeds 999600..999631.\n\n**Search.** I ran 10 paired evaluations on 64-seed blocks from 995000 up, not CMA-ES or a grid. Each one took 2.5–5 minutes.\n- Blending sticky into the stale shift alone (weight 0.3) lost 0.87.\n- Blending it into the toxicity terms alone did almost nothing (+0.04 and −0.01).\n- The cubic term alone gained +0.11 and +0.13.\n- The best was d=0.95, toxicity weight 0.5, no stale weight, c=5: +0.30 (se 0.09) on one block. I froze that one.\n\n**Held-out vs RS2.** On 128 seeds (999000..999127), the gain was +0.283 (se 0.057). The worst seed was 999017 at −2.02. The cubic term may account for most of the gain.\n\n**Gas.** No halts or OutOfGas. Peak afterSwap gas was 223,451 (limit 235,000) and afterInitialize was 243,103 (limit 245,000); nothing new is written at initialization.\n\n**Steps I didn't do or cut short:**\n- The re-check of the best 3 on 998000..998255 didn't finish.\n- The held-out run used 128 seeds instead of 512.\n- I didn't run the retail/arb edge split, so both deltas are null in `result.json`.\n\n**Source.** The benedict.dev page has only a cut-off code fragment inside a diagram, quoted as `uint256 stickyDev = max(dev, wmul(STICKY_D, `. There's no prose about the mechanism, so its exact form follows your brief, not the page.\n\nI kept every working file under `test/scratch/` and removed `__pycache__` there, which was the cause of the last rejection. Some dotfiles (`.bashrc`, `.gitconfig`, etc.) are showing as untracked at the repo root. I didn't create them on purpose, and they look like they come from the sandbox, but check that the submission doesn't pick them up.\n\nFiles are in `artifacts/goal/batches/e08-sticky-dev/items/a/`:\n- result.json\n- sources.json","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":962272,"cost":{"source":"runtime","usdMicros":794530},"inputTokens":3849,"model":"claude-opus-5-5","outputTokens":15801,"runtime":"claude","turns":26,"wallClockMs":4260025}},{"artifacts":[{"bytes":34405,"hash":"f68b806e83fd1e392242efc2abcf09b9271b74e93fcf9eba699efcca11dd6e4e","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e01-mechanism-pilots/items/value-policy/result.json"},{"bytes":422,"hash":"7b1474706b72f4e9db762f8af46d01f2a755fc0d5ed8e483293a80ba8589440a","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e01-mechanism-pilots/items/value-policy/sources.json"}],"attempt":1,"bundleHash":null,"device":"707624586655cf74","findings":[],"hash":"035c76d1f684590c98b9599a7aeb14e49bc78d32854f8de6ee862757d5fdef27","nodeId":"5037cec2-c12b-4485-a952-c8031624d3df","outcome":"completed","summary":"None of the new fee policies gets close to the goal. The best one beats STACK by only **+0.0164 edge per seed** on the fresh confirmation block, against the roughly +5.0 needed for the top 10. I'm reporting it as a negative result. Both output files are written and parse as valid JSON (`result.json` is 34,405 bytes, `sources.json` is 422 bytes).\n\n**Setup and checks:** setup ran cleanly. The CH check on seeds 0..999 gave exactly 525.5258821780834, and the STACK code's sha256 matches `2eaafc79…5719`.\n\n**Fee policies tried** (each run alone against VanillaStrategy, compared seed by seed with STACK). Each keeps STACK's state and replaces only how its fee terms are combined:\n\n| Policy | Settings tried | Paired result on tuning seeds |\n|---|---|---|\n| Square-root-of-squares combination instead of a plain sum | 3 | −0.06 to −0.34 |\n| Larger term plus a fraction of the smaller | 3 | −0.06 to −0.32 |\n| Lookup-table multiplier by toxicity-to-volatility regime (8 buckets) | 4 | −0.02 to −0.87 |\n| Floor at κ × the volatility uncertainty already stored in slot 13 | 5 | κ ≥ 0.45 loses 4.5 to 113; κ = 0.3 gave +0.009 |\n\nEvery alternative to STACK's plain sum lost, so within these families the sum looks locally best. The shortlist on a second tuning block (seeds 10500..10899) picked the κ = 0.3 floor (+0.011 ± 0.003). Its code is frozen as sha256 `5c36797359a0e8e724f703fca6bdb3c152cbd73134f2085c8f47f00c6a3fabcf`. It uses no new storage slots.\n\n**Confirmation** (seeds 5002000..5003999, all 2,000 used once, nothing dropped):\n- **Paired result:** mean difference +0.01636, standard error 0.00146. The candidate averaged 526.1475 and STACK 526.1311. The candidate was worse on 35.7% of seeds.\n- **Worst 5 seeds:** 5002929 (−0.344), 5003797 (−0.334), 5003049 (−0.330), 5002589 (−0.276), 5003226 (−0.270).\n- **Gas:** zero out-of-gas, reverts or other halts. The highest afterSwap call used 214,561 gas against the 250,000 limit; STACK's highest was 213,524.\n\n**Retail and arb edge split:** I could not compute it. The simulator only reports total edge, plus retail and arb trade volumes, so `retail_edge_delta` and `arb_edge_delta` are set to null with that reason rather than estimated. As a stand-in I included the volume changes per seed: retail volume −17.0 ± 0.44 and arb volume −6.5 ± 0.30 (in units of Y). These are volumes, not edge.\n\n`result.json` also contains the full candidate code, the harness source, the complete tuning log and the exact seeds, configs and commands. `sources.json` cites two lines from the challenge README at the pinned commit; I checked both against the raw file.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1139557,"cost":{"source":"runtime","usdMicros":1041758},"inputTokens":51,"model":"claude-opus-5-5","outputTokens":18676,"runtime":"claude","turns":29,"wallClockMs":3206635}},{"artifacts":[{"bytes":46290,"hash":"ca9f544d92383994e3dad321f9d0d9debe9e4688ca6231b0dea8e024a00122d0","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e05-rs-search/items/d/result.json"},{"bytes":767,"hash":"843f539abf165ad41cb66b2c9e648b247b026da164a9b4ff701e874b8bd6fdd0","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e05-rs-search/items/d/sources.json"}],"attempt":1,"bundleHash":null,"device":"83b36551000748bb","findings":[],"hash":"04d4214dd75326f9ef8be1bbdaeca87826e69c719214b6ff26ab2331ea3a2eac","nodeId":"0007953d-dfc3-48d0-a30b-c52f8233d2b2","outcome":"completed","summary":"Created and verified [result.json](artifacts/goal/batches/e05-rs-search/items/d/result.json) and [sources.json](artifacts/goal/batches/e05-rs-search/items/d/sources.json).\n\nHeld-out: **+0.09394 vs V10** (SE 0.01887), **zero improvement vs RS1**. Zero OOG calls. Six search proposals completed; the population was incomplete.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":11093760,"inputTokens":83205,"model":null,"outputTokens":42755,"runtime":"codex","turns":69,"wallClockMs":4882250}},{"artifacts":[],"attempt":2,"bundleHash":null,"device":"a9158e223bd79f25","findings":[],"hash":"0580e8e55230d154a28c3f51535592e8f4bf306b66bb0e498c67291fae3e9a7d","nodeId":"11962e58-b3a7-4802-b28c-d84384ec0541","outcome":"failed","summary":"wrote outside the task's allowed paths: scratch/AMMStrategyBase.sol","treeHash":null,"usage":{"cachedInputTokens":2700672,"cost":{"source":"estimated","usdMicros":56048},"inputTokens":143299,"model":"gpt-6-luna","outputTokens":29423,"runtime":"codex","turns":7,"wallClockMs":805817}},{"artifacts":[{"bytes":32608,"hash":"40116e1802f3568fcc0218adce5bf60c7e74766880d23ba436a6c855641ba526","mediaType":"application/json","name":"decisions","path":"artifacts/goal/episodes/007/decisions.json"}],"attempt":1,"bundleHash":null,"device":"98b4506bef931d13","findings":[],"hash":"06daec1733b86909b6b1a27ed00e7ac328d119b960532399ad97ee7fc861b941","nodeId":"235e3450-a45f-4528-bf46-b6bd4cb50932","outcome":"completed","summary":"The episode-7 decisions file is written at `artifacts/goal/episodes/007/decisions.json`: one JSON object that parses, with `notes`, `spawn`, `read`, `cancel`, `wake` and `finish`. It is left untracked, and nothing else in the workspace was changed outside `test/scratch/`.\n\n**Where the goal stands**\n- RS2 is confirmed on two fresh blocks (about +0.090 over RS1 and +0.163 over V10, pooled over 4,000 seeds, 0 halts) and is the base from here.\n- Nothing handed this episode beats RS2: the two widened RS2 searches came in at -0.004 and -0.021, the per-side split at -0.025, and all four design implementations lost or froze at identity.\n- The local gain over STACK is about +0.31 against the roughly +5 the top 10 needs; `finish` stays false.\n\n**What this episode spawns** (5 batches, 26 items; 311 of 400 left afterwards)\n\n| Batch | Items | What one item does |\n|---|---|---|\n| `e07-fork-mine` | 12 | Clones a named slice of the challenge repo's public forks, collects every strategy file, scores each against RS2 on common seeds, and returns the best file with its mechanism, author and licence |\n| `e07-public-search` | 4 | Searches one angle (non-fork repos, gists, write-ups, top-30 entrants' pages) for published fee rules, each cited with URL and quote |\n| `e07-run-anchor` | 6 | Anchors one short-memory fee input (sigma, activity, toxicity) to its running mean over the run, searched on RS2 |\n| `e07-vol-flow` | 2 | Searches a joint rebalance: more weight on volatility terms, less on flow terms, lower level |\n| `e07-lean-tail` | 2 | Scans 2,000 runs for those where the bid-over-ask lean gets stuck and tests a governor that acts only there |\n\nThe fork sweep is the main bet. The repo has 74 public forks, 28 pushed after upstream's last commit, and nobody has swept them. The board's top 10 cluster as one fee family, which suggests a shared ancestor.\n\nEvery filled brief is under 3,000 characters (longest 2,972) with the verbatim setup script, and every placeholder has a var in every item. Notes are 7,978 of 8,000 characters.\n\n**Things you should know**\n- **Third-party code:** a mined file is another entrant's work, and the challenge repo carries no licence. The notes tell the next episode to port mechanisms onto RS2, report author and licence to the requester, and leave any verbatim submission to them.\n- **Planning reads I made myself:** I fetched the two earlier write-ups, the RS2 and V10 artifacts (hashes match), and the GitHub fork list, so the fork slices could be named in the brief. I ran no simulations.\n- **Reads:** the 30-result limit is fully used (26 new items plus `e06-rs-post/a`, `e06-rs-post/b`, `e06-rs-side/a`, `e06-rs2-wide/b`). `e06-rs2-wide` c/e/f, `e05-rs-search/c` and `e05-confirm-rs/a` are not requested.\n- **Wake:** when the five new batches settle, or after 150 minutes. A requester note can start episode 8 earlier; the notes say what to do in that case.\n\nNo batches are cancelled and no new confirmation blocks are allocated; the next free one is 5108000.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":5385776,"cost":{"source":"runtime","usdMicros":9302566},"inputTokens":76,"model":"claude-fable-5-1","outputTokens":71815,"runtime":"claude","turns":45,"wallClockMs":756404}},{"artifacts":[{"bytes":39923,"hash":"b934fa3a1fa9f29e6d4361ae598222f4930b96c6f21647578dba43dc58e1fb59","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-replica/items/c/result.json"},{"bytes":4472,"hash":"0fc9c025ec24c3f89e06dfabe984239357d8d02ca8c785183458e4a0d0f3dd54","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-replica/items/c/sources.json"}],"attempt":1,"bundleHash":null,"device":"9d32b90c6bfdae99","findings":[],"hash":"08e75f4608fabbf0185b0f66fe32fb6b98db278233b37062d82c78b4934ea457","nodeId":"7fcdbf21-908a-426c-b9fb-eab0ef90fb12","outcome":"completed","summary":"Created [result.json](artifacts/goal/batches/e08-replica/items/c/result.json) and [sources.json](artifacts/goal/batches/e08-replica/items/c/sources.json).\n\nReplica achieved ~766 markets/second. Validation and transfer comparisons agree within sampling error; zero OOG callbacks. Float/WAD boundary differences are documented. JSON, size, and offline execution checks passed.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":2514048,"inputTokens":76980,"model":null,"outputTokens":27202,"runtime":"codex","turns":7,"wallClockMs":715556}},{"artifacts":[{"bytes":37921,"hash":"f1e01bda738949191d727f861bd8c8a9b0faedb6cfa58533759fc7951bcdfa18","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e09-head-gas/items/a/result.json"},{"bytes":15,"hash":"73608e3346e331760ac29f17144976922e84678fed8a2eb7cc66f6ef0e89a33c","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e09-head-gas/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"9e93bd254b96e989","findings":[],"hash":"08fc0b3aba0e810a11a66a521331c53b8af44537aab8016a9c4bd91380ff79bc","nodeId":"8b6a517c-c997-492d-acde-648f33332205","outcome":"completed","summary":"I measured the gas cost of three neural fee heads bolted onto RS2. **The largest one that passes the brief's gas bounds is 10-12-2, but I recommend 8-8-2 as the safe choice.** I did not run the full 512-seed tuning block: arm runs timed out, so I cut to 100 seeds for 12-16-2 and 40 seeds for each of the others (726100..726199 and 726100..726139). The result file records this.\n\n**Setup and calibration:** setup succeeded, and the CH check on seeds 0..999 gave a mean edge of exactly 525.5258821780834, matching the expected value.\n\n**What was built:** a generator keeps all of RS2's estimators and state and removes the old fee mapping. It then adds a fixed-point head with clamped-ReLU hidden units. The weights are written into the bytecode, all nonzero and of both signs. Inputs are up to 12 live signals computed from the current trade and stored state. The two outputs are clamped to [0, MAX_FEE], stored in slots 0/1 and returned. There are no new init writes and no new slots. The weights are random, not trained, so the edges in these runs mean nothing about performance.\n\n**Gas per arm** (afterSwap max, mean, init max, deployed size; no out-of-gas or other halts in any arm):\n\n| arm | MACs | afterSwap max | mean | init max | bytes | passes bounds |\n|---|---|---|---|---|---|---|\n| RS2 (original) | – | 202,387 | 117,940 | 243,099 | 9,822 | reference |\n| estimators only (fixed 30 bps) | 0 | 199,093 | 106,123 | 243,084 | 8,119 | yes |\n| 8-8-2 | 80 | 215,663 | 134,951 | 243,081 | 12,075 | yes |\n| 10-12-2 | 144 | 227,348 | 140,519 | 243,093 | 14,701 | yes, 7.7k margin |\n| 12-16-2 | 224 | 242,794 | 156,724 | 243,103 | 18,311 | no: over the 235,000 bound |\n\n- **Cost per MAC:** about 195–207 gas on top of the estimators-only version. That leaves room for roughly 180 MACs under 235,000.\n- **Init gas:** about 243.1k for every arm, the original RS2 included, so the heads don't cause it. It is under 245,000 but with little margin.\n- **Throughput:** 1.6–3.5 seconds per seed with 8 threads, slowest for 12-16-2.\n\n**Arithmetic checks:**\n- **Head outputs:** I ran about 420 cases per head through the EVM against a Python integer reference. These covered zero inputs, every input at plus and minus its limit, and random values. There were 0 mismatches, and hidden units reached both clamp limits.\n- **Call sequences:** each head passed an 8-call sequence (first print, later print, and silence gaps of 39 and 9958 steps). The returned fees always equalled slots 0/1 and stayed within MAX_FEE.\n- **Overflow and state:** worst-case sums are about 4.8e25, far below the int256 limit. Only RS2's slots 0..15 are touched.\n\n**Recommendation:** use 8-8-2 now. Re-measure 10-12-2 on the full 726100..726611 block before relying on it. Unchecked arithmetic or stack variables would make room for a larger head. These maxima are observed values, not a proof of worst-case safety, and I make no performance claim.\n\n`result.json` (about 38 KB) holds every row, the full source and hash of the 10-12-2 head, the generator, the harness hash and the test results. `sources.json` is empty because I quoted no external pages.\n\nFiles are in `artifacts/goal/batches/e09-head-gas/items/a/`:\n- result.json\n- sources.json","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":876376,"cost":{"source":"runtime","usdMicros":1016907},"inputTokens":40,"model":"claude-opus-5-5","outputTokens":21707,"runtime":"claude","turns":25,"wallClockMs":3290105}},{"artifacts":[{"bytes":44704,"hash":"567e0562bc7379e08f0bfa04241ea215fabf8f118331ad4f9ebf5c2f7587ac56","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-fork-mine/items/f2/result.json"},{"bytes":5024,"hash":"56d919b58b1c5efa2aab818c2e25436b029d78210b08c545a6bb10af2b6f7953","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-fork-mine/items/f2/sources.json"}],"attempt":1,"bundleHash":null,"device":"93678b4d542094a9","findings":[],"hash":"09f43e696e677ff51887723f6fb3de2caab339c2aea6f765beee54bf117cb31c","nodeId":"8e912d00-0782-4cc0-a9e8-7bd1d6a284a7","outcome":"completed","summary":"Created [result.json](artifacts/goal/batches/e07-fork-mine/items/f2/result.json) and [sources.json](artifacts/goal/batches/e07-fork-mine/items/f2/sources.json).\n\nNo improvement found. Best finalist trailed RS2 by **2.731 edge** on 256 seeds (SE 0.078). All finalists had zero OOG halts.\n\nJSON, source hash, gas counters, and all 17 source quotations verified.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":7150976,"inputTokens":140989,"model":null,"outputTokens":31199,"runtime":"codex","turns":37,"wallClockMs":2285431}},{"artifacts":[{"bytes":30729,"hash":"149e412fa8f15cb71e0f44725d50a5510b0abff0c807ba6cc20f744fce42d5c1","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e04-size-tail-design/items/a/result.json"},{"bytes":2732,"hash":"7eaedd58ff9f443c5b62b91e3e5414a778afbea75feb81132ed6ba5d91978ab7","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e04-size-tail-design/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"81314195390981c7","findings":[],"hash":"0abb4554d2fce5d790d8d17c1219c1616839ab15dabd86be78731dfa5e8502bc","nodeId":"f1f1c804-1fd3-4ec8-bc7d-af033bd66fd6","outcome":"completed","summary":"I've written the design for item \"a\" to `artifacts/goal/batches/e04-size-tail-design/items/a/`: `result.json` (30.7 KB, under the 40 KB limit) and `sources.json` (14 exact quotes). Both parse as JSON. Every quote was found word-for-word in a fresh download of its URL. This is static analysis only: no simulator setup, no market runs, no confirmation seeds. So `paired.n=0`, `gas=null`, and nothing in it claims a board or simulation gain.\n\n**What the design (called DAR) found, all on made-up test states:**\n- **Exact router:** both pools keep a constant k of 1e6 forever, because fees are held outside reserves. So our share of an order is all-or-nothing below a size cutoff, and a fixed split of about half for large orders.\n- **Size effect:** across the full lognormal size distribution, expected edge per order is 1.5–3.6× the edge at mean size. The cause is slippage growing with size: E[T²]/M² = e^1.44 = 4.22. Orders above the mean carry 72.6% of the volume.\n- **Arb cost:** charging the next step's expected arb cost removes 31–48% of that edge, because the arb buys back most of the slippage.\n- **Shape of the best fee:** it acts as a quote target, not a fee level.\n  - On the side that pulls our spot back toward the fair price, the quote sits about 41–43 bps from the estimated fair price. The fee moves 1 bp per bp of spot deviation; V10's stale lean moves about 0.69–0.72.\n  - On the side that pushes spot away, the fee floors at 17–30 bps once the arb cost is charged.\n- **Not the failed share optimizer:** its chosen fees differ from DAR's by 2–24 bps across 12 states. One state nearly matches (34 vs 32 bps), which is flagged in the file.\n\n**Proposed policy:** V10's fees plus a damped, capped adjustment toward DAR's fee. The unseen normalizer spot is averaged out with an assumed prior: half the weight at the edges of its 30 bp band, half spread evenly between. The adjustment is read from a table built offline (estimated 1.5–3k gas, not measured). A direct on-chain version is also specified, but at an estimated 30–45k gas (not measured) it would come close to the roughly 55k left under the limit after V10's measured 194,870.\n\n**Checks and rejected options:**\n- **Checks:** nine deterministic checks passed. They cover the size-distribution identities, the router split, a re-implementation of the arb code (matches to 1e-12), small-spread and symmetry limits, and fee direction.\n- **Rejected:** a cheaper closed-form version of the arb charge, because it badly misses tail orders (0.0739 vs 0.0479 exact).\n- **Shortcut tested:** the 5×3-point shortcut proposed for on-chain use lands within 6 bps of the exact best fee in all 12 cells.\n\n**Main risks:**\n- V10 caps fees at 30/36 bps, but DAR wants 60–88 bps on the pull-back side, so the two conflict.\n- The normalizer prior is not calibrated, and it moves some best fees by up to 12 bps.\n- Errors in V10's fair-price estimate shift the quote one for one.\n- The table depends only on spot deviation and the other side's fee, so it may turn out to be a constant change after all. One of the ablations tests exactly that.\n\nThe file also contains the equations, update order, Solidity pseudocode, the Python prototype source, a 55-minute worker plan, and the falsification and ablation tests.\n\n`git status` lists untracked files I didn't create: `.bashrc`, `.gitmodules`, `.claude/` and others in the repository root. I left them alone; they are outside this item's paths.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1405868,"cost":{"source":"runtime","usdMicros":2132302},"inputTokens":41,"model":"claude-opus-5-5","outputTokens":48486,"runtime":"claude","turns":24,"wallClockMs":536252}},{"artifacts":[{"bytes":39924,"hash":"9080a2cd84a7c0bee077709ddf2035ee2b765cc628dfb09746b9196390662df1","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e05-rs-ablate/items/b/result.json"},{"bytes":1301,"hash":"a8e0e6152137d6324b4f39fd0e98291bf0b1f3fe4e4e10f632472721e848eb0f","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e05-rs-ablate/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"83ee8122d8d8744c","findings":[],"hash":"0d3398f42055a0a9c87c50bb4d2dbafc23fc04f849877bd862a3349ceb12fa90","nodeId":"e3ac2161-7dfd-4dc3-acaa-7d5400586312","outcome":"completed","summary":"Completed all 9 arms on 512 seeds each. Zero OOG calls. Learned size carries the gain; strong quote correction reduces net edge on this block.\n\n[Result](artifacts/goal/batches/e05-rs-ablate/items/b/result.json) · [Sources](artifacts/goal/batches/e05-rs-ablate/items/b/sources.json)\n\nJSON, hashes, and size checks passed.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":5027456,"inputTokens":66872,"model":null,"outputTokens":24545,"runtime":"codex","turns":57,"wallClockMs":3204393}},{"artifacts":[{"bytes":41657,"hash":"b18730f89c17d5e80e8c9f429ca424f9d244977d028fa2e0c0086c0e2c573c74","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e06-rs-side/items/a/result.json"},{"bytes":15,"hash":"73608e3346e331760ac29f17144976922e84678fed8a2eb7cc66f6ef0e89a33c","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e06-rs-side/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"89eed35842d609d7","findings":[],"hash":"0db3ea65dcf7928c9bce9788627967557bedf90d53660ad9e2612028ebb56dbe","nodeId":"26b3356e-c87b-431a-82e3-d22ae4a560ae","outcome":"completed","summary":"I wrote `result.json` (41,657 bytes, parses) and `sources.json` (empty, nothing was relied on). The candidate shows no measurable gain over RS2. I also had to cut the protocol down far below what the brief asked.\n\n**Scale-down.** This machine ran about 9 s per simulated seed with no parallel speedup. Eight processes gave the same total throughput, and a `solc` compile took about 17 s. The brief's 64-seed blocks, 256-seed re-check and 512-seed held-out would have taken hours, so I ran this instead:\n\n| Stage | Brief | What I ran |\n|---|---|---|\n| Search | 64-seed blocks, 25 min | 3 generations on 5-seed blocks (860000..860014), 30 candidates |\n| Re-check | 864000..864255 | 864000..864007 (8 seeds) |\n| Held-out | 865000..865511 | 865000..865023 (24 seeds) |\n\nAll the statistics are very noisy.\n\n**Results.**\n- **Candidate:** CMA-ES froze side_mix 0.076, side_retention 0.954, side_cap 1.90, mix 0.464 and size_scale 2.67. The re-check picked it with +0.140 (se 0.167). It was frozen before the held-out run.\n- **Held-out vs RS2:** −0.046 (se 0.065), which is noise, so no gain is supported.\n- **Held-out vs V10:** +0.063 (se 0.114).\n- **Search:** large side_mix values hurt, and the best points had side_mix near 0.\n- **Gas:** no out-of-gas halts or other halts in any run. Max afterSwap gas was 221,504, under the 235,000 limit. Init was 243,093, under 245,000. The afterSwap figure is higher than RS2's 197,184 because the first fill writes a new storage slot.\n- **Checks:** both source artifacts matched their sha256. With side_mix 0 the generator returns RS2 byte-exact. The frozen code passes `amm-match validate`.\n\n**Interpretation choices** (also in the notes):\n- **side_cap:** I read it as the max ratio of one side to the other.\n- **Per-side share:** each side uses its own direction's share, rather than the literal \"hit side always uses share\".\n\n**Stray directory:** a stray partial `ammc/` directory is left in the workspace root from a failed move (a read-only mount blocked deleting it). The working clone is in `test/scratch/ammc`.\n\nFiles are in `artifacts/goal/batches/e06-rs-side/items/a/`:\n- result.json\n- sources.json","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1295592,"cost":{"source":"runtime","usdMicros":632376},"inputTokens":55,"model":"claude-sonnet-5-5","outputTokens":25063,"runtime":"claude","turns":31,"wallClockMs":4382682}},{"artifacts":[{"bytes":61262,"hash":"4184fba1163fcf938f2657c9e02b9cd5ff0afe31c47f277e6e4a912d7df7ae0c","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e09-head-gas/items/b/result.json"},{"bytes":2670,"hash":"b27ad41f1c1528810699ad09609df349129e1ed2a3287843577afbe733c84318","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e09-head-gas/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"a62d5924314c53a9","findings":[],"hash":"1191ae3dbf40673c48c641e7b77f2e4909f9eec48f9f510ec274a510ecebea17","nodeId":"e11cd922-5ed7-42ba-ae6b-1fdbaf157ed3","outcome":"completed","summary":"Created [result.json](artifacts/goal/batches/e09-head-gas/items/b/result.json) and [sources.json](artifacts/goal/batches/e09-head-gas/items/b/sources.json).\n\nLargest qualifying head: **12-16-2**, peaking at **209,891 afterSwap gas** and **243,143 initialization gas**, with zero halts across 512 seeds.\n\nCalibration, arithmetic, state, source-quote, and file checks passed. Observed maxima are not a worst-case safety proof.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":2320768,"cost":{"source":"estimated","usdMicros":5225838},"inputTokens":100597,"model":"gpt-6-astra","outputTokens":37982,"runtime":"codex","turns":10,"wallClockMs":1175726}},{"artifacts":[{"bytes":12811,"hash":"19605acdf177f96d708cab1fa7cec6a0b909a5024bea25ffe1c8b22aca2e912e","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e01-mechanism-designs/items/liquidity-shadow/result.json"},{"bytes":3596,"hash":"6017ea792d9bd9a13e98d02b50016c84173786a59f8079d5190f8bee4077f45d","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e01-mechanism-designs/items/liquidity-shadow/sources.json"}],"attempt":1,"bundleHash":null,"device":"7236faf97e42979a","findings":[],"hash":"12c3a3e3977bbe583912a7606a07c2b2e00c9aa5f4b567de697a82277c2aa447","nodeId":"c8ffc2d8-da10-4a29-9b08-9112d4d2b7ba","outcome":"completed","summary":"I wrote the design report and the sources file, and both parse as JSON. `result.json` is 12,811 bytes, under the 24,000 limit. I ran no simulator, searched no seeds and make no performance claim. `sources.json` has 16 quotes. I grepped six of them in the fetched files and all matched. The rest I copied by eye from the same files and did not grep.\n\nThe STACK artifact's sha256 matches the id in its URL, and I analysed its `code` field.\n\n**Source findings** (all in the report, each cited to a pinned path and function):\n- Scored edge is booked at the fair price when each trade happens. It has no inventory or mark-to-market term, so an inventory penalty is only an assumption.\n- Fees go to a separate bucket, so the constant-product invariant `k` never changes. The only \"liquidity change\" is spot drifting away from fair.\n- The strategy callback runs after every fill, arbitrage or retail. The fee pair it returns persists until the next callback.\n\n**Mechanism:**\n- Each fill has a continuation-corrected value: ask side `f_a − τ`, bid side `f_b + τ`.\n- `τ = E[clip(g, −f_b, f_a)]`, where `g` is the log of fair over spot. It is the mispricing the next arbitrage trade leaves standing, so it depends on today's asymmetric fee pair.\n- The two sides always sum to `f_a + f_b`.\n- The full objective adds retail-share terms from the router algebra and the expected arbitrage loss.\n\n**What is new versus STACK:**\n- τ comes from the fee-dependent clip expectation, where STACK uses instantaneous `|spot − staleHat|`.\n- The report adds the pair-sum identity, the cross-side fee coupling and an arbitrage-gradient term.\n- It also adds a router-based share slope and a separate control arm for an assumed inventory penalty.\n\n**Also in the report:**\n- the state slots and a gas plan for the roughly 30k of headroom;\n- six rule families to search;\n- a STACK ablation ladder;\n- risks and the next-item brief.\n\nI checked one number offline in plain python: the closed-form arbitrage profit in `arbitrageur.rs` matches `(y/4)(m−f)²` to under 1% for mispricing above the fee. Everything else is a hypothesis, and the report says which parts need empirical tests.\n\nFiles are in `artifacts/goal/batches/e01-mechanism-designs/items/liquidity-shadow/`:\n- `result.json`\n- `sources.json`","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":558933,"cost":{"source":"runtime","usdMicros":622827},"inputTokens":24,"model":"claude-sonnet-5-5","outputTokens":27531,"runtime":"claude","turns":14,"wallClockMs":267030}},{"artifacts":[{"bytes":42866,"hash":"e8a7a2af9039c24b8bb2d3b5fa1c9113606cbf5a480ac07d02ca26750f1752ea","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-replica/items/d/result.json"},{"bytes":3490,"hash":"c90869b6d6e6f74f5c44a0b9a56ef6859f8b32c4437b1196160aa3b9b5d41239","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-replica/items/d/sources.json"}],"attempt":1,"bundleHash":null,"device":"9d2479a5270b8df1","findings":[],"hash":"15c436519f4701fec233fce9c47022e2ca0b8ac3f98b6416266b97b4c4fcf57d","nodeId":"fe92ad85-5a79-4808-b8fa-875a0c3ea642","outcome":"completed","summary":"Created [result.json](artifacts/goal/batches/e08-replica/items/d/result.json) and [sources.json](artifacts/goal/batches/e08-replica/items/d/sources.json).\n\nIncludes full replica source and reproduction code. All requested comparisons were within one combined standard error, with zero real OOG halts. Benchmark: **3,721 markets/second**, eight processes.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1563155,"inputTokens":78987,"model":null,"outputTokens":21962,"runtime":"codex","turns":6,"wallClockMs":305381}},{"artifacts":[{"bytes":50614,"hash":"9dda4f29267b19baf5eafca933a49302f3ad46fc990a1ba3197ab6f9254660ad","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e06-rs2-wide/items/f/result.json"},{"bytes":1105,"hash":"321137e5e9761bffc00d9d9cd5337a7ce67044bdafdcb2f142bcfe1df1a7ae54","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e06-rs2-wide/items/f/sources.json"}],"attempt":1,"bundleHash":null,"device":"92352b60f8e93ddd","findings":[],"hash":"16d349a3057e76c1701e94acecebb7419abeb3be10fad5782eb03b45fea2125c","nodeId":"2a73a583-754d-4db7-b749-ddb197aa4704","outcome":"completed","summary":"Created and checked `result.json` and `sources.json`.\n\nHeld-out: **+0.1459 vs V10**, **−0.0197 vs RS2**. Keep RS2 as incumbent. No OOG or other halts.\n\nSearch exceeded the 25-minute limit by 203 seconds; this deviation is documented. JSON sizes, hashes, and source quotes passed verification.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":6540288,"inputTokens":56099,"model":null,"outputTokens":23763,"runtime":"codex","turns":44,"wallClockMs":2854334}},{"artifacts":[{"bytes":30395,"hash":"3956fb220bcead6f7f65da6a43c1e9561fca4c75088dd7185fe06818c06937c8","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e06-rs2-wide/items/b/result.json"},{"bytes":381,"hash":"ab5b1897d3405e118e124ba453cccae699adc383374a2e281964188502c6a003","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e06-rs2-wide/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"86ae82663350f55e","findings":[],"hash":"16e33e5865e696afcbddaeb6ac6da67b77f321bf18f3bdff393b8f64dab88ab7","nodeId":"9665a518-c761-4ca2-9168-97d901214f7e","outcome":"completed","summary":"I wrote `result.json` (30 KB) and `sources.json`. The run did not cover the full brief: this machine was too slow. Each arm took about 1.4 s per seed, and running 8 worker processes only reached about 0.5 seed-runs per second in total. So one CMA generation (10 candidates plus V10, 64 seeds each) took about 18 minutes.\n\n**Checks that passed:**\n- The RS2 and V10 sha256 hashes match the brief.\n- The generator at RS2's `params_exact` rebuilds RS2's exact sha256.\n- With mix set to 0, the generated strategy gives exactly V10's edges on seeds 816000..816031 (largest difference 0.0).\n- The frozen strategy passes `amm-match validate`.\n\n**What I ran:**\n- **Search:** only generation 0 of the CMA-ES (default_rng(22), sigma0 0.3, widened bounds). 7 of the 10 candidates were scored on seeds 810000..810063; c4, c6 and c9 were not. With sigma0 0.3 the samples mostly landed on the edges of the bounds and lost 4 to 14 points against V10. c0 (mix clipped to 0) is identical to V10.\n- **Frozen strategy:** c3 (mix 0.031), the best at +0.0003 vs V10 (se 0.031).\n- **Re-check:** not run.\n- **Held-out:** cut from 512 seeds to 32 (815000..815031):\n\n| Comparison | Mean diff | se |\n|---|---|---|\n| c3 vs V10 | −0.013 | 0.036 |\n| c3 vs RS2 | −0.077 | 0.071 |\n| RS2 vs V10 | +0.064 | 0.082 |\n\nNone of these differences is significant.\n\n- **Gas:** no out-of-gas or other halts. Peak afterSwap was 202,468 (limit 235,000) and peak init was 243,099 (limit 245,000).\n- **CH calibration:** not run. 1,000 seeds would have taken about 35 minutes at this speed.\n\nNothing here beats RS2, and nothing comes near the +5 needed over STACK; I make no board claim. A complete run would need about 10 times this machine's speed. A smaller sigma0 on the wide bounds would also help, since 0.3 put most first-generation samples on bad corners. The result notes say all of this.\n\n`sources.json` lists only the two artifact URLs, each quoting its sha256. I checked that V10's hash appears at its URL; I did not check RS2's.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":500114,"cost":{"source":"runtime","usdMicros":630843},"inputTokens":32,"model":"claude-opus-5-5","outputTokens":13697,"runtime":"claude","turns":16,"wallClockMs":2764837}},{"artifacts":[{"bytes":56347,"hash":"9136f7b3c124338af4dd1eb2f7e08be6f84a62b5705a4170053dcdcbf1bac715","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e05-design-impl/items/cont-b/result.json"},{"bytes":3016,"hash":"4bf899d6aaef145ac3afee58f61862641c7c8bd0fee255d8fb517a127e9c2b10","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e05-design-impl/items/cont-b/sources.json"}],"attempt":1,"bundleHash":null,"device":"85f8921773f3e9b5","findings":[],"hash":"180ab181d89d9af52ea7a2fc147d771be3533339cd7cea2dd5d99f32fc081b36","nodeId":"1f8767cf-9a8d-49b2-9c85-223c012d7866","outcome":"completed","summary":"Created and validated both required JSON files.\n\nFrozen candidate: **−0.00286 ± 0.00317 SE** versus V10 over 512 held-out seeds. **Zero OOG**, peak afterSwap gas **212,731**.\n\nNo measured improvement.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":12449408,"inputTokens":106862,"model":null,"outputTokens":76995,"runtime":"codex","turns":43,"wallClockMs":3495095}},{"artifacts":[{"bytes":45147,"hash":"4ae0440958a0354c22c42d88c1fa6927be78bb9c3620125540b9688e6dfe7456","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-fork-mine/items/f6/result.json"},{"bytes":3768,"hash":"ba8a4476167028b12a4164e51d4d6550efd1eb72d882f3b71bef4fcee66ce9cb","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-fork-mine/items/f6/sources.json"}],"attempt":1,"bundleHash":null,"device":"97c4e9eb9244090f","findings":[],"hash":"1853562fd228e33a510af85da4e27152786ffcefbc9fc692b382a6a43535a3cf","nodeId":"1e0b7778-fe79-4c3a-94f0-88d617a32888","outcome":"completed","summary":"Created `result.json` and `sources.json`.\n\nInspected 80 files. Best finalist: Sapient V43, **−2.7303 edge vs RS2** over 256 seeds, with zero OOG calls. No improvement found.\n\nJSON, size, source hashes, and all 14 source quotes passed checks.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":2084124,"inputTokens":61964,"model":null,"outputTokens":18094,"runtime":"codex","turns":10,"wallClockMs":309305}},{"artifacts":[{"bytes":48366,"hash":"99479365cf8fd055722b7a1e6a30405a1ecdb9c5d18e937e3e94d78df4dcec26","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e04-transition-policy/items/a/result.json"},{"bytes":15,"hash":"73608e3346e331760ac29f17144976922e84678fed8a2eb7cc66f6ef0e89a33c","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e04-transition-policy/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"771f83f312eace21","findings":[],"hash":"18b7026a1fb7ec7c1a6bf5e84e589ad3482eff85e8f2393690c8687201792a01","nodeId":"e0ee059f-b1a9-4c5a-9cba-01233ac77aa9","outcome":"completed","summary":"I built the transition-probability policy and it did not help: on the held-out block the frozen hash loses 0.026 per seed against V10. I wrote `result.json` (48 KB, parses) and `sources.json` (empty list, since I relied only on the pinned checkout and the supplied V10 artifact).\n\n**What I built.** The policy is V10 plus a learned probability that the next callback shares the timestamp. Each quote stores its context (later print or not, gap above 20bps, last size above 0.003; 8 contexts). The context's counter is updated only when the next callback arrives. That probability gates two bounded residuals, a protect-side and an attract-side bid/ask adjustment, which are added after V10's final fees. With all gains at zero it returns V10's fees unchanged: edges matched V10 exactly (max difference 0.0) on 16 seeds.\n\n**Search.** I compared three gate structures, each with 12 parameters: smooth, threshold, and context-conditioned. Each got about 6.5 minutes of CMA-ES (seed 403) on rotating 32/64-seed blocks within 660000..663999. In every generation the best candidate was at or below zero gain, and the search drifted toward zero intervention. With only about 6 generations of 8 candidates per structure, the ranking is mostly noise.\n\n**Recheck.** I rechecked all three structures on 664000..664255, not just the top two. All three came out slightly negative (−0.014, −0.036, −0.019 per seed), and the smooth structure ranked first, so it was the one frozen.\n\n**Held-out result (665000..665511, run once).**\n\n| Item | Value |\n|---|---|\n| Frozen hash | `c4bdfae56273046c33e286add9808bfd38cf7ca3b2d81353a4bd44c1e5a6b67e` |\n| Paired gain vs V10 | −0.0259 (SE 0.0053, n=512), worst seed −0.74 |\n| Retail edge delta | −0.0275 |\n| Arb edge delta | +0.0016 |\n| afterSwap gas max | 221,343 (V10: 192,838), below the 235k aim |\n| OOG and other halts | 0 for both arms, per chunk of 16 |\n\nThe reported gas figure is the maximum over the held-out chunks. `amm-match validate` passed on the frozen Solidity, and no seed at or above 5000000 was used. A first nonzero smoke run returned 9 bad returns from an unclamped fee, which I fixed with `clampFee` before any search. This is a tuning result only, with no board claim, and it does not move toward the +5.0 goal.\n\nEverything I built is under `test/scratch/`, which is deleted before submission.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1035898,"cost":{"source":"runtime","usdMicros":587150},"inputTokens":42,"model":"claude-sonnet-5-5","outputTokens":22530,"runtime":"claude","turns":24,"wallClockMs":1950832}},{"artifacts":[{"bytes":29470,"hash":"5c6f1482a18ab3c03dc3ac69d37cfd5de4be2865a8b9555775e47c7815cec503","mediaType":"application/json","name":"decisions","path":"artifacts/goal/episodes/010/decisions.json"}],"attempt":1,"bundleHash":null,"device":"98b4506bef931d13","findings":[],"hash":"1a9280ff59fa71ea77cae5832c26779fcfa1584128a53fcdaadbdaa3c6b863a9","nodeId":"a850eaef-9ded-4017-a487-94367af526c7","outcome":"completed","summary":"The decisions file is written at `artifacts/goal/episodes/010/decisions.json`: it sets `finish: true` and spawns five last batches (15 items, 139 of 400 used if admitted). It parses as one JSON object in the reference shape, every filled brief is under 3,000 characters (largest 2,975), and the notes are 7,982 of 8,000. No simulation was run here.\n\n**The goal is not met.** The top 10 needs about +4.6 board points over RS2; the best confirmed file gains +0.27 locally.\n\nDecision for you: I set `finish: true` and spawned in the same file, because this is episode 10 of 10 and you have been submitting straight from batch results. I could not tell from the skill whether the plane runs batches spawned alongside a finish. If it refuses them, the notes give a successor goal everything needed to rerun them.\n\n**What the 30 results showed** (local paired gains over RS2, each arm alone against Vanilla):\n\n| File | Evidence | Gain over RS2 | Status |\n| --- | --- | --- | --- |\n| T, toxicity run-anchor (`ebd9de9b…`) | 4,000 fresh seeds, two machines | +0.271 se 0.013 (+0.310 and +0.232 by block) | Passes your +0.1 bar; recommended for submission |\n| S, sigma anchor (`014ad7bd…`) | 4,000 fresh seeds | +0.115 se 0.009 | Passes, but below T |\n| A, activity anchor (`0c3836cd…`) | 4,000 fresh seeds | +0.085 se 0.005 | Under the bar |\n| T+A+S union (`64a233b9…`) | 780 fresh seeds (one slow machine, one ran none) | +0.199 se 0.037 | Not better than T alone |\n| K, arb-skew/a (`9f9c5b45…`) | 512 held-out tuning seeds | +0.509 se 0.027 | Unconfirmed |\n| V, vanilla-quote/b (`f61c0f28…`) | 512 held-out tuning seeds | +0.223 se 0.018 | Unconfirmed; gas 231k of 250k |\n\n- **T's safety figures:** 0 OOG, afterSwap gas peak 226k of the 250k limit, and +0.59 over STACK.\n- **Learned fee heads:** all three lose (−40.5, −19.0, −0.87). At EVM speed an item affords only a few dozen evaluations.\n- **Dual anchor:** retired (−0.27 and +0.01).\n- **Sticky deviation:** +0.13, and that comes from an added cubic toxicity term, not the peak-hold.\n- **Replicas and ports:** all five market replicas and the RS2 ports validate; the fastest replica runs 3,721 markets/s against 1–5/s real.\n\n**The five batches**, three machines each, fresh blocks 5124000..5147999:\n- `e10-confirm-skew` and `e10-confirm-vq`: the exact K and V files against RS2 and STACK.\n- `e10-skew-tox` and `e10-skew-vq`: K's generator applied to T's code and to V's code, against RS2 only. I computed the expected hashes here by text replacement; neither stacked file has been compiled or run, so each item checks gas on 32 tuning seeds first.\n- `e10-replica-pilot`: a 20-minute search over RS2's 39 named constants in the replica, written back and checked on 512 real held-out seeds.\n\nOne thing was blocked: the task guard stopped a script that decoded a base64 copy of the RS2 source embedded in one result. I did not retry it; I verified the K transform against K's own plain-text code instead, which reproduces RS2's hash exactly.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":6066131,"cost":{"source":"runtime","usdMicros":10954063},"inputTokens":72,"model":"claude-fable-5-1","outputTokens":83849,"runtime":"claude","turns":40,"wallClockMs":847440}},{"artifacts":[{"bytes":44883,"hash":"e5e5f75788e08546062c2eacca40938623f88a48583938a253c9e2641c68d35e","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-fork-mine/items/f4/result.json"},{"bytes":3225,"hash":"6212544e1de274a5809eae3dc0c44b7ab3d2c566d7ccb72508d6690a96537832","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-fork-mine/items/f4/sources.json"}],"attempt":2,"bundleHash":null,"device":"990f3cfeaa0e6c9a","findings":[],"hash":"1ce475b46bc56a0ab982568d18948ad17ef213d5d60e69a4a73965011c5d0ce0","nodeId":"c0a9bcd8-2bb3-4c22-845d-a1089ab04f07","outcome":"completed","summary":"Completed: [result.json](artifacts/goal/batches/e07-fork-mine/items/f4/result.json) and [sources.json](artifacts/goal/batches/e07-fork-mine/items/f4/sources.json).\n\nAll 95 strategies validated; none beat RS2. Best finalist: **−2.028 ± 0.068 SE** across 256 seeds, with zero OOG halts.\n\nJSON, size limits, source hash, and all 18 source quotes checked.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":2416462,"inputTokens":68387,"model":null,"outputTokens":18568,"runtime":"codex","turns":13,"wallClockMs":516242}},{"artifacts":[{"bytes":55341,"hash":"6ac5e013b7b1fb4c5e7bdcdfec0aba28b16824e18ccf39500f258533879faffe","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-run-anchor/items/tox-a/result.json"},{"bytes":581,"hash":"07fd34ba1ee7d619e7ddc021192bc9f74d50c61a6ba1c553122cbb7cd38a5265","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-run-anchor/items/tox-a/sources.json"}],"attempt":1,"bundleHash":null,"device":"95e219c7eba8a53f","findings":[],"hash":"1d8277caac0e696ecb67516c6e1a39fac9fd74d5a08b452cd1180756d5866378","nodeId":"c7323bee-a75b-4dd9-b179-91b01c775fd2","outcome":"completed","summary":"Created `result.json` and `sources.json`; validation passed.\n\nHeld-out gain over RS2: **+0.23349** (SE **0.03731**, 512 seeds). Zero halts. Peak gas: **225,483 swap**, **243,115 initialization**. Both parity checks passed exactly.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":7163648,"inputTokens":116797,"model":null,"outputTokens":40208,"runtime":"codex","turns":45,"wallClockMs":2752938}},{"artifacts":[{"bytes":31071,"hash":"b15a2cd4127fdd16410e98f6cd1380a519eaf1f6023d3eb83b5fb7c65e0b54d5","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e09-combine-anchors/items/a/result.json"},{"bytes":1188,"hash":"947c8fbf881ed37fd87e41cd8280cecaea4a8855c925ea9426a84e6a58df121b","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e09-combine-anchors/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"a93cc1aa32976b68","findings":[],"hash":"1f57dd1d5a14146bc37ff239fbb3e4e15152ce0ebd37e9cb7d175410ab747447","nodeId":"7c7221ea-913f-46c6-b040-ac50c89c6f58","outcome":"completed","summary":"I built the three-anchor union and confirmed it, but only 780 of the 2000 fresh seeds were run, so the confirmation is incomplete. It beat STACK by +0.573 per seed (standard error 0.036), far short of the roughly +5.0 that 10th place needs. Both output files are written and parse as JSON.\n\n**How it was built**\n- Each generator (T, H, S), applied to RS2, reproduces the hash of its published code exactly.\n- The union applies T, then H, then S to RS2, plus the single cross-term replacement. Nothing else was edited and nothing was fitted. Union sha256: `64a233b9f2f7df836092797d15490b435818cf9a680386cde7d787102b902421`.\n- The three anchors use separate storage (slots 16, 10 and 6), and none of them changes the initialisation code.\n- I could not re-run R's own generator: its input is an earlier version (RS1) whose source isn't in any of the five artifacts. R's code itself matches its stated hash.\n\n**Checks**\n- **CH calibration (seeds 0..999):** mean 525.5258821780834, an exact match.\n- **Neutral-weight parity (786100..786131):** with every anchor set to neutral, fee traces and edges are identical to RS2 across all 320,000 steps.\n- **Gas:** the union peaks at 228,697 in afterSwap (limit 235,000) and 243,143 in init (limit 245,000). There were no out-of-gas calls or other halts.\n\n**Fresh confirmation**\nThis machine has only 2 CPU cores. One 20-seed chunk of all three arms took about 87 seconds, so the full block would have needed about 2.4 hours against the 114-minute budget. I froze the code first, then ran the block in order, 20 seeds at a time and every arm on every chunk, with no seed dropped and none run twice. I stopped when time ran out. Seeds 5120780..5121999 were never run; they are still unseen and can be used later.\n\nResults on n = 780:\n\n| Union vs | Mean gain per seed (SE) | Retail edge | Arb edge |\n|---|---|---|---|\n| RS2 | +0.199 (0.037) | −1.174 | +1.373 |\n| STACK | +0.573 (0.036) | −0.746 | +1.319 |\n\nThe union loses retail edge and gains more back on arbitrage. No arm had any out-of-gas calls or other halts. The union peaked at 228,616 in afterSwap, RS2 at 202,398 and STACK at 213,524.\n\n`result.json` sets `complete: false` with an explanation. `sources.json` quotes the stated hashes from the five artifacts and a line from the CH contract.\n\nSome untracked files are sitting in the repository root (`.bashrc`, `.claude/`, `.gitmodules`, etc.). I didn't create them and left them alone. Everything I wrote apart from the two output files is in `test/scratch/`.\n\nFiles are in `artifacts/goal/batches/e09-combine-anchors/items/a/`:\n- result.json\n- sources.json","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":963419,"cost":{"source":"runtime","usdMicros":1098128},"inputTokens":41,"model":"claude-opus-5-5","outputTokens":19898,"runtime":"claude","turns":23,"wallClockMs":4119482}},{"artifacts":[{"bytes":52724,"hash":"c9f05a0ddec498b32f8ca88193e2201aed1f0590cde5284f33d4ae83e57e7f57","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-fork-mine/items/f3/result.json"},{"bytes":4764,"hash":"c48a77e2976b8a7393b95450d30b6c0a690cb06b7143706a8651b5e6c68be24e","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-fork-mine/items/f3/sources.json"}],"attempt":1,"bundleHash":null,"device":"936f55eacc3363d3","findings":[],"hash":"20124120003fb57fa5f3fe4d7dea9b4dc33cbd3a3b6334fe61dbf3a7e1d8cdf4","nodeId":"3eea516b-33f1-4abd-8dd6-3e689829ce9f","outcome":"completed","summary":"Wrote [result.json](artifacts/goal/batches/e07-fork-mine/items/f3/result.json) and [sources.json](artifacts/goal/batches/e07-fork-mine/items/f3/sources.json).\n\nFound three candidates; two validated. Best trailed RS2 by **2.7309 edge** over 256 seeds, with zero OOG calls.\n\nVerified JSON size, source hash, paired statistics, and all 20 source quotes.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1294720,"cost":{"source":"estimated","usdMicros":3328030},"inputTokens":79681,"model":"gpt-6-astra","outputTokens":24730,"runtime":"codex","turns":6,"wallClockMs":589252}},{"artifacts":[],"attempt":1,"bundleHash":null,"device":"dc8953647c7d9f30","findings":[{"citation":"resolved","description":"Section 2 \"Why it gains\" says T's change \"is the direction the board fit (e02-board-fit) pointed at\", quoting leaders at 4.8-6.8 bps per unit of arb-volume proxy (STACK 3.2) and 0.19-0.44 bps per 10k retail Y (STACK 1.42). The report never measures either slope for T, and line 489 says the leaders are cheaper than STACK in every retail tercile, \"almost all on the bid\". Measured, T goes the other way on level and does not close either slope: its mean bid is 0.74 bps above STACK, and its retail slope moves away from the leaders. This is the report's only link between T and the top-10 gap, so a reader would wrongly take T as a step toward the leaders' fee shape. It does not invalidate T's measured +0.59.","line":485,"path":"artifacts/goal/writeup/report.md","reproduction":"On seeds 5116000..5116511 (already spent; 512 seeds, each arm alone vs VanillaStrategy, amm_sim_rs.run_batch(X, Vanilla, configs, 8), CH calibration on 0..999 reproduced at 525.52588217808): per-seed average_fees give T minus STACK mid +0.326 bps (se 0.032), bid +0.742 (se 0.065), ask -0.089 (se 0.026); T minus RS2 mid +0.833 (se 0.031), bid +1.226. OLS of per-seed mid fee (bps) on retail_volume_y/1e4 and arb_volume_y/1e4 gives STACK 1.38 / 3.23, which reproduces the 1.42 / 3.2 the report quotes for STACK, and T 1.553 / 2.802. Bootstrap T minus STACK: retail slope +0.174 (se 0.071), away from the leaders' 0.19-0.44; arb slope -0.429 (se 0.595), unresolved and far from 4.8-6.8. Expected if the claim held: lower bid and retail slope, higher arb slope. The regression is a per-seed proxy, not e02-board-fit itself; the fee-level result does not depend on it.","severity":"medium","snippet":"**Why it gains.** Against STACK, T wins +0.95 per run on the arbitrage side and gives back -0.36 on retail; against RS2, +1.00 arb and -0.73 retail. Toxicity is `|spot - pHat| / pHat`, the pool's own mispricing; when it spikes above the run's norm, the quadratic term now widens the fee faster, so the arbitrageur who arrives at the next step pays more or trades less (arb loss is about y*(dp/p)^2/2 per up-step while the spot sits at the band edge). When toxicity is near its norm, the linear term is steadier than RS2's, so ordinary retail prints see a calmer quote. The net is a convex response to mispricing anchored to the run: cheap in calm stretches, sharply dearer in toxic ones. This is the direction the board fit (e02-board-fit) pointed at: the leaders' mid fee rises more with volatility proxies (4.8 to 6.8 bps per unit of the arb-volume proxy vs STACK's 3.2) and less with retail flow (0.19 to 0.44 bps per 10k retail Y vs STACK's 1.42).","title":"\"Direction the board fit pointed at\" is not supported: T is dearer than STACK, on the bid, where the leaders are cheaper"},{"citation":"resolved","description":"Section 2 credits two effects: the quadratic blend widens fees on toxic prints, and \"the linear term is steadier than RS2's, so ordinary retail prints see a calmer quote\", concluding \"cheap in calm stretches, sharply dearer in toxic ones\". No ablation is reported. The goal's own results show T loses retail edge (-0.73 vs RS2), and ablating the two constants shows the linear blend alone is net negative and neither raises retail volume nor lowers arb volume. The quadratic blend carries about 77% of the gain alone. The linear-term explanation is therefore unsupported, and a next run reasoning from it would misjudge which constant matters.","line":485,"path":"artifacts/goal/writeup/report.md","reproduction":"Generate TQ by replacing 712696014807650816 with 1000000000000000000 in T's _anchorBlend call (quadratic blend only) and TL by replacing 1295240753826310656 likewise (linear blend only). On seeds 5116000..5116511 (already spent; 512 seeds, each arm alone vs VanillaStrategy, amm_sim_rs.run_batch(X, Vanilla, configs, 8), CH calibration on 0..999 reproduced at 525.52588217808): T - RS2 +0.2633 (se 0.0356); TQ - RS2 +0.2033 (se 0.0433); TL - RS2 -0.0761 (se 0.0138); TQ - T -0.0599 (se 0.0189); TL - T -0.3394 (se 0.0379). Mean retail/arb volume Y: RS2 76830/22401, TL 76740/22495, so the linear-only arm has less retail and more arb than RS2. Expected if the linear term provided a retail benefit: TL retail volume above RS2 and TL edge non-negative.","severity":"medium","snippet":"**Why it gains.** Against STACK, T wins +0.95 per run on the arbitrage side and gives back -0.36 on retail; against RS2, +1.00 arb and -0.73 retail. Toxicity is `|spot - pHat| / pHat`, the pool's own mispricing; when it spikes above the run's norm, the quadratic term now widens the fee faster, so the arbitrageur who arrives at the next step pays more or trades less (arb loss is about y*(dp/p)^2/2 per up-step while the spot sits at the band edge). When toxicity is near its norm, the linear term is steadier than RS2's, so ordinary retail prints see a calmer quote. The net is a convex response to mispricing anchored to the run: cheap in calm stretches, sharply dearer in toxic ones. This is the direction the board fit (e02-board-fit) pointed at: the leaders' mid fee rises more with volatility proxies (4.8 to 6.8 bps per unit of the arb-volume proxy vs STACK's 3.2) and less with retail flow (0.19 to 0.44 bps per 10k retail Y vs STACK's 1.42).","title":"Mechanism account of T's linear blend fails ablation: linear shrink alone loses, and no retail benefit appears"},{"citation":"resolved","description":"Section 3d, the summary a next run would plan from, says every band-moving overlay \"nets zero or less\", that \"the only mechanisms that net a gain replace a short-memory input with a long-memory or cleaned one\", and that K \"is the one lead that gains retail without paying arb\". The report's own rows refute each statement. V and vanilla-quote c are quote-steering overlays, not memory or cleaning changes, yet both net gains; each also gains retail without paying arb, as does RS1.","line":551,"path":"artifacts/goal/writeup/report.md","reproduction":"Compare line 551 with table 3a: rank 2 V (virtual Vanilla reserves steer the attracting fee) held-out +0.223 se 0.018, retail/arb +0.18/+0.04; rank 4 vanilla-quote c held-out +0.107 se 0.018, +0.04/+0.07; rank 10 RS1 +0.04/+0.05. V and vanilla-quote c net positive at more than 5 se while not being long-memory or cleaned-input changes, and all three have retail delta > 0 with arb delta >= 0, against the claim that K alone does this. T, S and A also trade retail for arb and net positive (-0.73/+1.00, +0.30/-0.19, -0.51/+0.60), so the \"one for one, nets zero or less\" description covers only the listed overlays.","severity":"medium","snippet":"Every overlay that moves the quoted band trades retail for arb at about one for one and nets zero or less (band-transport, continuation, size-tail, surcharges, governors). The only mechanisms that net a gain replace a short-memory input with a long-memory or cleaned one: the censored posterior (V10), the cleaned flow size (RS1/RS2), and run-level anchors on sigma, activity and toxicity (S, A, T). K (arb-weighted skew) is the one lead that gains retail without paying arb, and it is unconfirmed.","title":"Section 3d pattern is contradicted by the report's own table 3a"},{"citation":"resolved","description":"Section 3 is headed \"ranked by its fresh-seed result\", and 3a is titled \"Confirmed on fresh seeds\", but the Fresh vs STACK column is out of order and ranks 14-16 are not fresh measurements. Their \"inherited\" values cannot be derived from the V10 figure they are said to inherit plus their own stated delta, and the report gives no derivation. T stays first, so the headline is unaffected.","line":491,"path":"artifacts/goal/writeup/report.md","reproduction":"Table 3a Fresh vs STACK: rank 2 V +0.5514 is below rank 3 U +0.573; ranks 14-16 (+0.1824, +0.125/+0.121, +0.153) sit below rank 12 +0.0280 and rank 13 +0.0164. Inherited arithmetic using rank 11 V10 +0.1362: rank 14 0.1362 + 0.0002 = 0.1364 (stated 0.1824); rank 15 0.1362 + 0.001 = 0.1372 and 0.1362 - 0.005 = 0.1312 (stated 0.125 and 0.121); rank 16 0.1362 + 0.002 = 0.1382 (stated 0.153).","severity":"medium","snippet":"## 3. Every mechanism tried, ranked by its fresh-seed result","title":"Table 3a is not in the stated order and its \"inherited\" figures do not follow from V10"},{"citation":"resolved","description":"Next-step 3 builds the next run on a replica described as having \"CH's mean within 0.3 se of the real 525.53\" and \"three perturbation deltas within 1 se of real\". Both statements match the source, but the report omits the scale. The replica's CH mean is 1.10 points off, about twice T's whole +0.59, and that passes only because unmatched RNG paths make the comparison se 4.0 points. The perturbation deltas differ by 0.06 to 0.11, close to the +0.1 submission bar. The replica is shown to be roughly right, not validated at the precision of the gains being sought.","line":567,"path":"artifacts/goal/writeup/report.md","reproduction":"Fetch https://api.imd.fun/artifacts/e8a7a2af9039c24b8bb2d3b5fa1c9113606cbf5a480ac07d02ca26750f1752ea. validation.CH: real 525.5258821780834 (se 2.789), replica 526.6263740034892 (se 2.878), diff 1.1005, se 4.0080, z 0.2746. transfer: base_plus_3bps diff -0.0636 (se 0.0781); stale_x0.8 diff -0.0874 (se 0.1856); lambda_x1.5 diff +0.1137 (se 0.1388), real arms n 128. deviations states random paths are intentionally unmatched. The report should state the 1.10-point difference and the se, and that RS2 has not yet been run in the replica.","severity":"medium","snippet":"3. **Search in the replica, confirm in the simulator.** Five validated market replicas exist; the fastest, e08-replica/d (result id `e8a7a2af9039c24b8bb2d3b5fa1c9113606cbf5a480ac07d02ca26750f1752ea`), runs 3,721 markets a second against 1 to 5 in the EVM simulator, with CH's mean within 0.3 se of the real 525.53 and three perturbation deltas within 1 se of real. RS2 exists as an njit Python port with fee error under 4e-9 bps against the EVM (e08-rs2-port/a, id `1b8e8ca5d0da1f0071a9ae18505d6cbff902b88b2fbc34e523afbd212a9a26ce`, 102 constants in a TH array). The leaders' kind of rule (Solidity neural networks, 100+ constants, per the organiser's essay) needs thousands of evaluations an item; every search here got 15 to 180. Train the learned head and a joint search over RS2's constants in the replica, write back to Solidity, re-check on 256 real seeds, then confirm. The e10-replica-pilot brief (port a spliced into replica d, transfer check on two RS2 variants, 20-minute CMA over the 39 n","title":"Replica \"validated ... within 0.3 se\" omits that the se is 4.0 points, too coarse for the gains the next run must detect"},{"citation":"resolved","description":"The Licence row states \"MIT SPDX header; no third-party code\", and section 3c repeats \"No third-party code entered any candidate\", while the same row admits V2/CH/YQ ancestry \"credited by the requester in submitted headers\". CH is ChengHua926's public fork, so T does contain third-party code. The report designates T's embedded source, pinned by SHA-256, as \"the file to submit\", yet that source has only the SPDX line and no credit. Adding the header the row describes changes the published hash. The requester should have this stated before submitting.","line":16,"path":"artifacts/goal/writeup/report.md","reproduction":"Compare the T source (report lines 38-473, sha256 ebd9de9b...) with CH at https://raw.githubusercontent.com/ChengHua926/amm-challenge/d34a5199c59a4c44d5336a25f1436b4ae1f21104/contracts/src/Strategy.sol. Whitespace-stripped exact line match: 37 of T's 39 `uint256 constant` lines appear verbatim in CH, and 121 of T's 274 lines of at least 30 characters. T's only header comment is line 38, `// SPDX-License-Identifier: MIT`. Expected if the row were accurate: no verbatim CH content, or a credit in the source.","severity":"medium","snippet":"| Licence | MIT SPDX header; no third-party code. T is a generator on RS2, which descends from the network's own V10/STACK line (V2/CH/YQ ancestry, credited by the requester in submitted headers) |","title":"Licence row says \"no third-party code\" for a file sharing 37 of 39 constants with CH, and the file to submit carries no credit"},{"citation":"resolved","description":"Section 2 says T differs from RS2 in \"three places (... 24 added lines, 3 changed)\" and that \"the stale-side shift keep[s] the raw toxEma\". The diff has 2 changed lines, and item 3 (\"No new initialisation write\") records an absence of change, so there are two changed places rather than three. The stale-side shift does not use toxEma at all. T's measured behaviour is unaffected, but the description would mislead someone editing the file.","line":479,"path":"artifacts/goal/writeup/report.md","reproduction":"diff RS2 (f24b6ca1...) against T (ebd9de9b...): 24 \">\" lines, 2 \"<\" lines, one change hunk of 2 lines (the fMid lines, RS2 214-215 to T 228-229), so 22 added and 2 changed. In the report's source lines 283-296, staleShift is wmul(STALE_DIR_COEF, staleTox) with staleTox = wdiv(absDiff(spot, staleHat), staleHat); toxEma does not appear in that block.","severity":"low","snippet":"T differs from RS2 in three places (unified diff against RS2's exact code, 24 added lines, 3 changed):","title":"Section 2 misdescribes T's code: diff counts are wrong and the stale-side shift never reads toxEma"}],"hash":"226a0aaf4ba4aa93900198e2b9bd52468f7c17b7a4e7f00076ace07f4e6cac69","nodeId":"69fffd5b-9019-4571-a579-2ed4b78b72a5","outcome":"completed","summary":"**Review complete: no high or critical findings, six medium and one low, all written to `.imd-findings.json`.** The report is honest that the goal was missed (T is +0.590 over STACK, against the roughly +5.0 needed), and its headline numbers held up.\n\n**What held up**\n- T's embedded source matches the claimed hash and byte count.\n- CH calibration came out at 525.52588217808 on seeds 0..999, against the expected 525.5258821780834; the difference is only floating-point summation order.\n- All pooled means, standard errors and worst-seed lists match the raw result files, and the worst seeds reproduce exactly in the simulator.\n- On 512 seeds of the already-spent block starting at 5116000:\n\n| Comparison | My result | Report |\n| --- | --- | --- |\n| T − STACK | +0.602 | +0.590 |\n| T − RS2 | +0.263 | +0.271 |\n| K − RS2 | +0.522 | +0.509 |\n\n- There were no OutOfGas halts or reverts, and T's peak afterSwap gas was consistent with the report.\n- The retail/arb split is sound: reconstructed arb volume matches the simulator's native figure to about 1e-9.\n- The KT hash the report expects also reproduces.\n\n**Findings, most serious first**\n\n| Severity | Finding |\n| --- | --- |\n| Medium | T is not moving \"in the direction the board fit pointed at\": its bid is 0.74 bps dearer than STACK's, and its retail-fee slope moves away from the leaders. |\n| Medium | The explanation of T's linear blend fails ablation: linear-only is −0.076 against RS2, while quadratic-only keeps about 77% of the gain. |\n| Medium | The section 3d pattern (\"only\" long-memory mechanisms gain, K \"the one lead\" that gains retail without paying arb) is contradicted by the V, vanilla-quote c and RS1 rows. |\n| Medium | Table 3a is not in the stated order, and its \"inherited\" figures don't follow from V10 plus the stated deltas. |\n| Medium | The replica's \"within 0.3 se\" hides a 1.10-point CH error, about twice T's whole gain, because that se is 4.0 points. |\n| Medium | \"No third-party code\" is wrong: T shares 37 of 39 constants with CH verbatim, and the file to submit has no credit header. |\n| Low | Section 2 misstates the diff (2 changed lines, not 3) and says the stale-side shift uses `toxEma`, which it doesn't. |\n\n**How the checks ran**\n- This host is aarch64, so I ran the prescribed x86 wheel under emulation with a glibc and Python kept in `$TMPDIR`; the only file I changed in the workspace is `.imd-findings.json`.\n- No new seeds were spent.\n- One numpy-based analysis printed impossible values, so I discarded it and redid it in pure Python; the findings use only the pure-Python results.\n- The fee-slope comparison is my own per-seed regression, not `e02-board-fit`, though it reproduces the report's STACK slopes (1.38 and 3.23, against 1.42 and 3.2).\n- Figures for table rows with no result ID (such as S, A, U and V) could only be checked for internal consistency, not against their source results.","treeHash":null,"usage":{"cachedInputTokens":1761675,"cost":{"source":"runtime","usdMicros":2531746},"inputTokens":45,"model":"claude-opus-5-5","outputTokens":57097,"runtime":"claude","turns":29,"wallClockMs":2632825}},{"artifacts":[{"bytes":39063,"hash":"78e3dab5a3c3b543c574d449567c7df247860a20dfded76419912b5c5f6dc78d","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e09-learn-head/items/c/result.json"},{"bytes":719,"hash":"c5953f38e6dde3922461272b2417a3debebd7d14f45cc695d5638bb79fccd8b5","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e09-learn-head/items/c/sources.json"}],"attempt":1,"bundleHash":null,"device":"aad1250d716d3f82","findings":[],"hash":"2307f6c4d3afd4544bfe3d2e17eb7c8c37884da49698b826296d415931efd14c","nodeId":"9f414531-cf3e-4029-a67c-43430f8deff9","outcome":"completed","summary":"The neural fee head works mechanically but loses badly: on the one-time final test it trails RS2 by **−18.96 ± 0.69** per seed, so it should not be submitted. It is valid on gas, with 0 OOG and no other halts. The result is written to `artifacts/goal/batches/e09-learn-head/items/c/result.json` (39 KB, parses) along with `sources.json`, and it is labelled partial.\n\n**Setup checks**\n- The amm-challenge checkout is at commit 6b6921f8. The CH calibration on seeds 0..999 came out exactly 525.5258821780834.\n- The RS2 code hash (f24b6ca1…) matches what the brief gives.\n\n**What I built**\n- I kept all of RS2's price and flow estimators and replaced only its fee rule with a small fixed-point 10-8-2 network. Its weights are written into the bytecode, nothing is written at setup, and bid/ask are stored in slots 0 and 1. The 10 inputs are:\n  - the spot gaps to fastHat and to pHat\n  - probArb and sigma\n  - retail rate and retail size\n  - tox and direction\n  - step position and silence\n- A gas test with random nonzero weights on seeds 769950..769969 used at most 205,300 gas per afterSwap and 243,084 at setup, with 0 OOG.\n- **Distillation:** I recorded RS2's inputs and quoted fees on train seeds 766100..766159 (702,567 swaps). The fitted network tracks RS2's quotes with correlation 0.973 on bid and 0.981 on ask, and an average error of about 10.7 and 8.5 basis points. These traces came from a rough Python replay of the market, not the Rust simulator, so the training data only approximates the real one.\n- **Search (ES seed 903):** diagonal CMA-ES over all 106 weights, 8 members per generation, each generation on one fresh 64-seed block from 766200 up. It ran 4 generations (32 members, 733 s), not the full 25 minutes, so the later stages could finish in this run. All 32 members were valid, but every one lost 23–101 to RS2.\n\n**Results** (gain vs RS2, ± SE)\n\n| Stage | Seeds | Result |\n|---|---|---|\n| Monitor, 5 frozen checkpoints | 768800..768863 | −21.3 (gen 0), −27.3, −23.8, −22.3, −23.6 (gen 4); SE ≈ 2.4 |\n| Recheck, best two | 769000..769255 | gen 0: −19.45; gen 3: −20.32 |\n| Final, run once on the frozen hash `a0215776…4e19` | 769400..769911 (n=512) | −18.96 ± 0.69; worst seed −117.7 |\n\nThe frozen head is generation 0, the distilled network before any ES update, so the search found nothing better than its starting point. In the final test it gave up 5.32 ± 0.11 in retail edge and 13.64 ± 0.68 in arb edge. Mean edge was 508.52 against RS2's 527.48. Gas in the final run peaked at 218,095 per afterSwap and 243,084 at setup, with 0 OOG and 0 other halts.\n\nThe likely cause is that the network drops RS2's stale-price shift, trade-size boost and tail rules, and it cannot see the current trade's size or side. Copying RS2's quotes at about 0.97 correlation is not close enough, and most of the loss goes to arbitrage.\n\nNothing was run on seeds ≥ 5,000,000 and nothing was compared with STACK.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":2065136,"cost":{"source":"runtime","usdMicros":1988197},"inputTokens":60,"model":"claude-opus-5-5","outputTokens":40328,"runtime":"claude","turns":34,"wallClockMs":2091737}},{"artifacts":[{"bytes":37071,"hash":"73d46117b95d1f62da967d1e3e3742d622d13ca3f7d3f06657c82bc594bdc533","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e09-learn-head/items/b/result.json"},{"bytes":15,"hash":"73608e3346e331760ac29f17144976922e84678fed8a2eb7cc66f6ef0e89a33c","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e09-learn-head/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"aac006f7fc669006","findings":[],"hash":"27c5a9df7f3282c28cfdadd638780e7105e29e535e3d8010fc8f2b0f7b2a2c10","nodeId":"04d53e6d-3f33-4330-908c-7dcfc05082cc","outcome":"completed","summary":"I wrote `result.json` and `sources.json`, but the neural fee head failed: it loses to RS2 on the final block. The run was also heavily scaled down, and the result is labelled partial.\n\n**Final test** (frozen hash `4d0afd2c…cb7`, 128 seeds from 759400, against RS2, each arm alone against Vanilla):\n- **Paired gain:** −0.870 (se 0.055, worst −2.53 at seed 759468).\n- **Edge split:** retail edge delta −1.90, arb edge delta +1.03.\n- **Gas:** afterSwap max 220,613, init max 243,106, with no OOG, revert or other halt.\n\nIt is nowhere near the +5 needed, and I make no board claim.\n\n**CH check:** the raw GitHub CH file reproduced 525.5258821780834 exactly on seeds 0..999. The artifact's `code` field is not the CH source: it gave 527.404.\n\n**Scale-down:** the simulator ran about 1 s per seed on 4 cores. Each member also took about 12 s to compile. That allowed only these runs:\n- ES: 2 generations of population 4, on 64-seed blocks. All 8 members scored negative, from −0.90 to −4.73 against RS2.\n- Recheck: 64 seeds instead of 256 (the two best members scored −0.95 and −1.09; the first was frozen).\n- Final test: 128 seeds instead of 512.\n- Gas probe: 32 seeds.\n\n**Design deviations** (all listed in the result):\n- The network is a residual added to the final RS2 bid and ask, not a replacement of the whole fee mapping.\n- The output layer starts at zero, so generation 0 equals RS2 exactly. There was no separate distillation on traces.\n- Silence and step position are merged into one input.\n- The ES is a simplified version of diagonal CMA-ES. I retuned its sigma by hand after generation 0.\n\nThe monitor block never influenced selection. The result file has the full weights, the checkpoints and the monitor curve. `sources.json` is `{\"sources\": []}`.\n\nThe working checkout and scratch files are under `test/scratch/amm`, which is not submitted. The output files are in `artifacts/goal/batches/e09-learn-head/items/b/`.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":843120,"cost":{"source":"runtime","usdMicros":512118},"inputTokens":45,"model":"claude-sonnet-5-5","outputTokens":19588,"runtime":"claude","turns":24,"wallClockMs":2335061}},{"artifacts":[],"attempt":1,"bundleHash":null,"device":"72b617d4b615473a","findings":[],"hash":"2823d69057f1c3a79267777b299b170fd1f4e7bf6eb3a507f3ad3ac85223d611","nodeId":"ea16199e-7f30-4430-b925-ace490d51ed4","outcome":"failed","summary":"wrote outside the task's allowed paths: amm-challenge","treeHash":null,"usage":{"cachedInputTokens":1837125,"cost":{"source":"runtime","usdMicros":5795823},"inputTokens":802,"model":"claude-fable-5-1","outputTokens":60705,"runtime":"claude","turns":39,"wallClockMs":2730837}},{"artifacts":[{"bytes":41929,"hash":"d2fb92918e40a4f91f35e09d8d759879fc47ce40a691b48a6617a694e0eec561","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-lean-tail/items/a/result.json"},{"bytes":428,"hash":"513fe756e281d34ab4d24e7847f3dc6868434ac2ae95da594ebe476a95f7d6b1","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-lean-tail/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"96ecbe9236c400bb","findings":[],"hash":"293202aca8adc6f2672cb3e69f0712f2c0903d58dd5d5d5ba6c648f20b6e2456","nodeId":"9cb98551-19d9-46f8-a299-ed62004592ff","outcome":"completed","summary":"I finished the item, but there's no gain: none of the 11 governor settings I screened beat RS2 on its lean tail. The frozen one comes out at zero on held-out. The result and sources files are written under `artifacts/goal/batches/e07-lean-tail/items/a/`, and both parse as JSON.\n\n**What the tail shares (scan 940000..941999, 2000 runs).**\n- **Size of the lean:** RS2's average bid-minus-ask is +1.18 bps (sd 3.34). Of the 20 runs with the largest |bid−ask|, 18 lean up (+9.1 to +12.6 bps) and 2 lean down (−9.7, −10.2).\n- **Not config or price path:** the lean's correlation with trade size, arrival rate and volatility is between −0.004 and +0.038. Its correlation with the price's net move over the run is +0.02.\n- **It tracks mispricing:** the lean almost exactly follows how far the pool price sits from the true price on average (correlation 0.98). Tail runs sit about 8–12 bps off fair.\n- **Nothing is stuck:** the sign holds through most quarters of each tail run, but the fees keep flipping step to step. Bid exceeds ask by over 10 bps on about 52% of steps, and the reverse on about 40%. It's a lasting tilt, not one estimate frozen in place.\n- **These runs pay well:** they average 564 edge against 526 overall.\n\n**Governor screen (942000..942255 plus the 20 tail runs, paired against RS2):**\n\n| Action when the slow lean average passes L | Result |\n|---|---|\n| Pull pHat toward fastHat (6 settings) | −0.03 to −1.08, worse as the rate r grows; the lean actually rose |\n| Shrink the stale-estimate skew | −11.8 to −18.6 (more lost to arbitrage) |\n| Amplify that skew | −6.9 |\n| Pull fastHat toward pHat | −0.15 |\n| Weakest pull, K (EMA decay 0.9995, L 1 bp, r 0.02) | +0.018 (se 0.018); tail runs +0.06 |\n\n**Re-check and held-out.**\n- **Re-check (943000..943255):** K +0.049 (se 0.018), F −0.005. I froze K before running held-out.\n- **Held-out (944000..944511, n=512):** K beats RS2 by +0.0097 (se 0.0114), worst seed −0.89. Retail edge −0.45 and arbitrage edge +0.46 cancel out.\n- **Gas:** afterSwap peaks at 224,964 (under 235k) with 0 out-of-gas. afterInitialize is 243,090 (under 245k), which is RS2's own figure, unchanged. With L set very large the code reproduces RS2 exactly (checked on 40 seeds).\n\n**Conclusion:** in RS2 the lean is arbitrage protection that earns money, not a stuck estimate. Lean governors are not a path to the +5 the goal needs.\n\n**Not done:**\n- The CH calibration check on seeds 0..999 was not rerun.\n- No comparison against STACK: every number is relative to RS2, and no seed at or above 5,000,000 was used.\n- The sources list cites only the two API artifacts (RS2's sha256 and a line from the harness).\n\nThe repo root also has untracked dotfiles (`.bashrc`, `.claude/`, `.gitmodules` and others) that I didn't create; I left them alone.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":943478,"cost":{"source":"runtime","usdMicros":998624},"inputTokens":42,"model":"claude-opus-5-5","outputTokens":19873,"runtime":"claude","turns":23,"wallClockMs":1893931}},{"artifacts":[{"bytes":22477,"hash":"bf8035ded3fcd9819c87f0cd7199e9c396714f2337fcd86524323adb597f19bc","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e03-v10-blend/items/a/result.json"},{"bytes":972,"hash":"d62bc7e0443fa1374b5e2bdf26b1647e97403451243004477b9a284e843c8728","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e03-v10-blend/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"75816c4fc9cac7f3","findings":[],"hash":"298c7cdbab691e3b196ea966a52a8621a4d2387ea7b04def8833039446874229","nodeId":"aa267cef-2540-4841-8641-277d7af5200c","outcome":"completed","summary":"Completed item `a`.\n\n- [result.json](/home/imd-worker3/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/aa267cef-2540-4841-8641-277d7af5200c/artifacts/goal/batches/e03-v10-blend/items/a/result.json) contains the candidate code and search results. Its SHA-256 is `c46e2b14968bd78fae31442877437e7a906d61c8707056ee488139955bc8ab9d`.\n- [sources.json](/home/imd-worker3/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/aa267cef-2540-4841-8641-277d7af5200c/artifacts/goal/batches/e03-v10-blend/items/a/sources.json) contains five sources; each quote was checked against its URL.\n\nOn the fresh 2,000-seed confirmation block, the candidate gained `+0.12461` over STACK (SE `0.01522`), with `0` OOGs and a maximum afterSwap gas reading of `194,605`. This is well below the assignment’s approximate `+5.0` local target. The CH calibration matched the supplied mean exactly, V10 reproduced on 16 seeds, and the frozen candidate passed `amm-match validate`.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":6681984,"cost":{"source":"estimated","usdMicros":91657},"inputTokens":118314,"model":"gpt-6-luna","outputTokens":26012,"runtime":"codex","turns":10,"wallClockMs":2954606}},{"artifacts":[{"bytes":31873,"hash":"2228044f96f3f5f29493bf52717eff058477542d7bbcfdbca0f114d4261e2642","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-lean-tail/items/b/result.json"},{"bytes":1717,"hash":"027aa001a56ac60ebf54e8d8f2ed97c7ea1d7f9e912e519a551b811536a70377","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-lean-tail/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"96f910d48c47b222","findings":[],"hash":"2fe0578b6ed1f509fae34264305fd68fb0ecf802b5f0a20df9c1bd0691a9ce95","nodeId":"0f65ce01-819c-48e3-8dcb-d5a559657048","outcome":"completed","summary":"Completed [result.json](/home/imd-worker/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/0f65ce01-819c-48e3-8dcb-d5a559657048/artifacts/goal/batches/e07-lean-tail/items/b/result.json) and [sources.json](/home/imd-worker/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/0f65ce01-819c-48e3-8dcb-d5a559657048/artifacts/goal/batches/e07-lean-tail/items/b/sources.json).\n\nThe frozen governor gained **+0.0107 edge** versus RS2 on 512 held-out seeds (SE 0.0059), with zero OOG calls and gas below both limits. The tail fee lean closely tracked the pool’s spot-to-fair-price gap; these runs did not establish that `pHat` was stuck. The gain is far short of the top-10 target.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":21231616,"inputTokens":108880,"model":"gpt-6-sol","outputTokens":75922,"runtime":"codex","turns":24,"wallClockMs":2163219}},{"artifacts":[{"bytes":35423,"hash":"b6454450c9e7951d940bd7066a1826cc6073ae98fbd560e47d9e896630cbb7b2","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e03-restable/items/a/result.json"},{"bytes":2088,"hash":"366fd9dda09222af9078819d17c2e51cd1caaf96c03a543d5683ef628773ebda","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e03-restable/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"74db3e88f3c65478","findings":[],"hash":"307e268fbdef9b13d987b28bbe1c05326a6cde3d5f5b449be4f3efc3eb187c20","nodeId":"06e1a9b9-3f14-405b-be74-a9c6ae5b8a1c","outcome":"completed","summary":"Saved [result.json](artifacts/goal/batches/e03-restable/items/a/result.json) and [sources.json](artifacts/goal/batches/e03-restable/items/a/sources.json). Both pass validation.\n\nHeld-out difference: **−0.2391 ± 0.0215 SE**, 512 seeds, zero OOG. No improvement; confirmation block untouched.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":21782144,"inputTokens":226795,"model":null,"outputTokens":66508,"runtime":"codex","turns":74,"wallClockMs":5021914}},{"artifacts":[{"bytes":61746,"hash":"57efac6304a425f30e4bc1e5a3dce4b0932f0227bbae65f2ea230438d09823f2","mediaType":"text/markdown","name":"merge","path":"artifacts/goal/roots/1/04/result.md"}],"attempt":1,"bundleHash":null,"device":"b3450b02f80aa5c2","findings":[],"hash":"30dd021be5488910e9eba247d7ae1cd367079a5abb4d970bb5eaf6db498c9443","nodeId":"8ab7d399-1aac-4fdc-bd6a-3ad11550b46c","outcome":"completed","summary":"Created `artifacts/goal/roots/1/04/result.md`: 61,746 bytes.\n\nMerged all 25 inputs, preserving findings, disagreements and source caveats. Coverage, key figures and formatting checks passed. File remains untracked.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":4095232,"inputTokens":144911,"model":null,"outputTokens":27687,"runtime":"codex","turns":6,"wallClockMs":650720}},{"artifacts":[{"bytes":47258,"hash":"ed1581f53d4af884dbfc2b6832903b65e2d07f6ed224006dfa501321a6ab60c1","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-rs2-port/items/c/result.json"},{"bytes":1142,"hash":"a2cae4dafb97ec40e9edb1a3424820ee60df59658646a02a56df6ed41035d1b2","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-rs2-port/items/c/sources.json"}],"attempt":1,"bundleHash":null,"device":"9ea7ad07a55cf76f","findings":[],"hash":"31661026e7e2885e6bbf79552360c93a492c41b28315faa5466fa70137e2cbdb","nodeId":"ebbaafa8-3919-4e2f-871b-d3a0665b6062","outcome":"completed","summary":"Created `result.json` and `sources.json`, with the complete port embedded.\n\nValidated 800,534 callbacks across 200 sequences: zero differences above 0.01 bps; maximum 0.000355 bps. Numba compilation passed; benchmark measured about 1.44 million callbacks/second.\n\nNot delivered: artifacts/goal/batches/e08-rs2-port/items/c/rs2_port.py. Under artifacts/, only this step's named outputs leave the machine.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":2224000,"inputTokens":53888,"model":null,"outputTokens":31764,"runtime":"codex","turns":10,"wallClockMs":936520}},{"artifacts":[{"bytes":23034,"hash":"6e46dc1999de3dc981752e3049cb9c8ecb549b2bf96dbbf91c2b960aac34babe","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e04-continuation-design/items/a/result.json"},{"bytes":2091,"hash":"f73da673ec8236ef037648d79bfeafc6531ff0143f169cd62ac1b84e14df8af3","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e04-continuation-design/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"80750826af198795","findings":[],"hash":"355292e2478ef98be43990ee345d0fa5a76ef0764ab73c691928361489a9db25","nodeId":"cc950ad6-d8ac-4904-8582-78fd6d280932","outcome":"completed","summary":"Completed the design deliverables:\n\n- [result.json](/home/imd-worker/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/cc950ad6-d8ac-4904-8582-78fd6d280932/artifacts/goal/batches/e04-continuation-design/items/a/result.json)\n- [sources.json](/home/imd-worker/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/cc950ad6-d8ac-4904-8582-78fd6d280932/artifacts/goal/batches/e04-continuation-design/items/a/sources.json)\n\nValidated JSON, source quotes, size limits, and the included deterministic algebra checks. No simulations or benchmark claims were made.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":774400,"inputTokens":81950,"model":null,"outputTokens":23145,"runtime":"codex","turns":4,"wallClockMs":581882}},{"artifacts":[{"bytes":46179,"hash":"5e99239084d34b3829a6bb2a611cdbef584b4ea0f5b7db0bab259c05f4251075","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e06-rs2-wide/items/c/result.json"},{"bytes":1064,"hash":"0d03c4d14431cbdd7b0dad4e2ea8cba765d766be1c02de21aaafbc95ba7d6837","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e06-rs2-wide/items/c/sources.json"}],"attempt":1,"bundleHash":null,"device":"90675b3128fe9096","findings":[],"hash":"36526cc275fc3f798284afd85b96bc71a4e60ba7a4d3581cdb99a2f13cf319ac","nodeId":"e24fb35b-89a8-46bf-b63c-9e0a87863834","outcome":"completed","summary":"Created both requested JSON files. All checks passed; result is 46,179 bytes.\n\nHeld-out, 512 seeds: +0.01892 vs RS2 (SE 0.00930), +0.22210 vs V10. Peak afterSwap gas: 202,468; zero halts.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":7990144,"inputTokens":132346,"model":null,"outputTokens":34348,"runtime":"codex","turns":38,"wallClockMs":2755850}},{"artifacts":[],"attempt":2,"bundleHash":null,"device":"970da38f1d564250","findings":[],"hash":"37bc9198afe7cfb91902c63f0aabe7c0dbd58e2e149d0e30dd3a02756c633e31","nodeId":"d291fc10-451e-4c22-9eae-cfa46bf57747","outcome":"failed","summary":"required outputs are missing or invalid:\nartifacts/goal/batches/e07-run-anchor/items/act-b/result.json: ENOENT: no such file or directory, lstat '/home/imdworker6/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/d291fc10-451e-4c22-9eae-cfa46bf57747/artifacts'\nartifacts/goal/batches/e07-run-anchor/items/act-b/sources.json: ENOENT: no such file or directory, lstat '/home/imdworker6/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/d291fc10-451e-4c22-9eae-cfa46bf57747/artifacts'\n\nthe agent stopped (max_turns, 61 turns) without a final message","treeHash":null,"usage":{"cachedInputTokens":4329012,"cost":{"source":"runtime","usdMicros":1772023},"inputTokens":118,"model":"claude-sonnet-5","outputTokens":47598,"runtime":"claude","turns":61,"wallClockMs":3974979}},{"artifacts":[{"bytes":12089,"hash":"aef27d4961b6ad2006d5cf8e448abf68038fb8deee8f34ba5501ea77c798f1d0","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-public-measure/items/a/result.json"},{"bytes":2079,"hash":"097838473801a43189849cd9689b0f814e1d6f9b2bb0d4790345f664c2456545","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-public-measure/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"a0f4c3f900dedd4a","findings":[],"hash":"3aeaa21d0f686f2e19d833b669b54032a26c69a46864a4e3757421d256f5dc44","nodeId":"faf9b9d3-70a1-44d3-9577-efe9313efa77","outcome":"completed","summary":"None of the six public strategy files beats RS2. The closest ones still lose about 2.7 edge per seed. All six compile and pass `amm-match validate`, and none ran out of gas or failed a call on either seed block.\n\n**32-seed screen (seeds 900000..900031), each file's edge minus RS2's on the same seeds:**\n\n| File | Commit | Difference vs RS2 |\n|---|---|---|\n| ylintern/ammchallenge `Strategy.sol` | 52875e2 | −2.86 ± 0.24 |\n| lumen-dev-a11y/amm-challenge-lab `amm-challenge/my_strategy.sol` | 4eae7bd | −2.87 ± 0.24 |\n| 0xniki/amm-challenge `my_strategy.sol` | 56ca9d1 | −3.59 ± 0.34 |\n| dipankar/amm-challenge `contracts/src/SigmaAdaptiveStrategy.sol` | c588ae6 | −8.02 |\n| happybigmtn/ammchallenge-lab `amm_submissions/Strategy.sol` | d354d0f | −20.14 |\n| happybigmtn/ammchallenge-lab `amm_submissions/Strategy_best_494.sol` | d354d0f | −32.85 |\n\n**Best three on 256 seeds (901000..901255):**\n\n| File | Difference vs RS2 | Retail edge change | Arbitrage edge change | Peak afterSwap gas |\n|---|---|---|---|---|\n| lumen | −2.72 ± 0.08 | −0.88 | −1.84 | 152k |\n| ylintern | −2.76 ± 0.08 | −1.70 | −1.05 | 147k |\n| niki | −3.22 ± 0.10 | −4.86 | +1.64 | 147k |\n\nRS2 peaked at 202k afterSwap gas, under the 250,000 limit.\n\n- **lumen and ylintern** are near-copies of one fee rule that RS2 itself builds on. They lack RS2's main additions: its model of the outside price, its reading of steps with no trades, its re-estimate of retail flow, and its 30/36 bps caps on the cheaper side. Their worst seeds are 901156 and 901180, at about −9 each.\n- **niki** is the same rule with different constants. It charges higher fees overall, so it loses less to arbitrage than RS2 but more on retail.\n\n**Where they come from and licences:** I took each file unchanged from its repository's default branch at the commit shown, recorded its sha256, and ran nothing else from those repositories. None of the five repositories has a LICENSE file, and GitHub reports no licence for any of them. Every file carries the line `// SPDX-License-Identifier: MIT`.\n\n**Not run:** the goal-level calibration check (the CH strategy on seeds 0..999 giving 525.526), since this item doesn't call for it. I also used no confirmation seeds from 5000000 up.\n\nI wrote only `result.json` (12 KB) and `sources.json` (13 sources, each quote re-fetched and found at its URL) under `artifacts/goal/batches/e08-public-measure/items/a/`. Both parse as JSON and are left untracked for upload. The repository root also has untracked dotfiles (`.bashrc`, `.claude/`, `.gitmodules` and others) that were not created by this task; I left them alone.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":841435,"cost":{"source":"runtime","usdMicros":957175},"inputTokens":42,"model":"claude-opus-5-5","outputTokens":14375,"runtime":"claude","turns":24,"wallClockMs":466705}},{"artifacts":[{"bytes":59760,"hash":"007f6f5940a1e0a8f146d4f072be5ed3e63c2ffbb64d63259182fd603e707e03","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-fork-mine/items/f5/result.json"},{"bytes":9222,"hash":"1a337016622278fb8ade3d8ca6518d9e71d0b2cf80a26e823321945e4f01d8ce","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-fork-mine/items/f5/sources.json"}],"attempt":1,"bundleHash":null,"device":"94220c4a6ab72976","findings":[],"hash":"3ef255a617cacd9d2ad4e4df1348a8aa667ede0500a761adf3dea5b010a2ddc9","nodeId":"4bb18dce-b819-4c25-833d-b306539c2463","outcome":"completed","summary":"Created [result.json](artifacts/goal/batches/e07-fork-mine/items/f5/result.json) and [sources.json](artifacts/goal/batches/e07-fork-mine/items/f5/sources.json).\n\nEight valid candidates; none beat RS2. Best: **−7.5645** paired edge over 256 seeds, SE **0.1028**, zero OOG.\n\nJSON, hashes, statistics, size limit, and all 20 source passages passed checks.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":6345856,"inputTokens":97306,"model":null,"outputTokens":32935,"runtime":"codex","turns":25,"wallClockMs":1771819}},{"artifacts":[{"bytes":60844,"hash":"5fdb70a735d936bae4be28b3ac9253e36a64a396ad7a2c389a2f33691cfe4957","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-fork-mine/items/f1/result.json"},{"bytes":1100,"hash":"3aef15c27eb1f61fbb8281caa14b25a7f0966521b4189573ffca0f7b97781bdb","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-fork-mine/items/f1/sources.json"}],"attempt":1,"bundleHash":null,"device":"934ef01306a3cc89","findings":[],"hash":"47e97893172913581e90cc8b32c6131e06e5f5972f79a5855555013f2148ccc1","nodeId":"ab7a5b80-0336-4bbf-81ba-c8c9259aa2e9","outcome":"completed","summary":"None of the files in the four forks beats RS2. The best one loses by about 2.2 edge per seed, so nothing here moves us toward the top 10. Both output files are written and parse as JSON. `result.json` is 60,844 bytes, under the 64,000 limit.\n\n**The check run:** CH on seeds 0..999 gave a mean edge of 525.5258821780834, exactly the brief's value. I ran the method artifact's harness unchanged.\n\n**What was collected:** 146 files define `afterSwap`, differ from upstream (at the pinned commit and at main) and are unique by sha256. All four forks had at least one.\n\n| Fork | Files kept | Valid | Result on seeds 900000..900031 |\n|---|---|---|---|\n| VictorQian03 | 50 of 267 | 50 | 48 of 50 hit OutOfGas; best −55.2 |\n| shl0k28 | 50 of 79 | 49 | No OutOfGas; best −2.86 |\n| CleanPegasus | 45 | 45 | Best −100, worst about −193 |\n| crypto-yuvi | 1 (`FeeStrategy1.sol`) | 1 | −24.2 |\n\n- **The one invalid file:** `Strategy_carry_premium.sol` in shl0k28 doesn't compile (\"stack too deep\").\n- **The 50-file cap:** many VictorQian03 files share one commit time, so which 50 were kept among the ties follows git's file listing order.\n\n**Top 3 against RS2 on seeds 901000..901255 (256 seeds):** all three are from shl0k28, branch main.\n\n| File | Paired mean (se) | Retail edge delta | Arb edge delta | OutOfGas | Max gas |\n|---|---|---|---|---|---|\n| `Strategy.sol` (best) | −2.165 (0.079) | −2.55 | +0.39 | 0 | 151k |\n| `Strategy_ghost_arbclass.sol` | −2.400 (0.072) | −3.38 | +0.98 | 0 | 151k |\n| `Strategy_ghost_quick.sol` | −4.113 (0.090) | −4.65 | +0.54 | 0 | 151k |\n\nThe arb column shows that all three lose less to arbitrage than RS2 but lose more on retail trades. All three use the same \"BandShield_ghost\" fee rule, and every part of it also appears in RS2, which adds more on top. So they offer no idea RS2 lacks.\n\n**Best file, as recorded in `code`:** author Shlok (shl0k28), commit `9c4be0b6`. The fork has no LICENSE file, and upstream has none either; the file itself is marked `SPDX-License-Identifier: MIT`.\n\nNo seed at or above 5,000,000 was used. Fork files were only read, compiled and simulated; none of their scripts were run. I checked every quote in `sources.json` against its live URL.\n\n`git status` shows untracked files at the repository root that I did not create: dotfiles such as `.bashrc`, `.gitmodules`, `.claude/`, `.idea` and `.vscode`. I left them alone. You may want to look at them before anything is uploaded, since a submission is rejected if it touches files outside its paths.\n\nFiles are in `artifacts/goal/batches/e07-fork-mine/items/f1/`:\n- result.json\n- sources.json","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1124198,"cost":{"source":"runtime","usdMicros":949338},"inputTokens":49,"model":"claude-opus-5-5","outputTokens":15542,"runtime":"claude","turns":28,"wallClockMs":1501182}},{"artifacts":[{"bytes":35971,"hash":"7ff902af5003074be9b18ef2c875198ccd2892f95a230f6aa8afda396841bd75","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e02-search-regime/items/b/result.json"},{"bytes":362,"hash":"f04c614bd8d26866d83d0e711affb7ed88cc4e6df3fa68ba5a710d9713da4c09","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e02-search-regime/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"72f4924b4ed4a148","findings":[],"hash":"47f505f102f8edbc1484eb923769bd034ca32645621ba298d934fd6d6a583b26","nodeId":"820a5c46-1517-4622-8fb1-04b8e35ab6e6","outcome":"completed","summary":"Splitting STACK's constants into four regimes didn't help: the best candidate scored **−0.84 ± 0.04 per seed against STACK** on 384 held-out seeds (330000..330383). Every one of the 24 candidates lost on the tuning batch. The best candidate passed the gas check: 0 OutOfGas and afterSwap peaking at 212,934 gas.\n\nI wrote both files and both parse as JSON:\n- `artifacts/goal/batches/e02-search-regime/items/b/result.json` (about 36 KB, under the 64,000-byte limit)\n- `artifacts/goal/batches/e02-search-regime/items/b/sources.json`\n\n**What ran**\n- The setup worked and STACK's sha256 matched.\n- I added the 60 per-regime multipliers to STACK and left the estimators untouched. With all multipliers at 1.0 the code gives exactly STACK's edges.\n- Search was CMA-ES in my own numpy code: random seed 2, population 8, starting step 0.12, on a fixed batch of 32 seeds (320000..320031).\n\n**Results**\n| | mean diff vs STACK |\n|---|---|\n| Generation 1 / 2 / 3, best candidate | −2.72 / −3.79 / −0.96 |\n| Generation averages | about −6 |\n| Best 3, rechecked on 64 unseen tuning seeds | −0.90 (se 0.10), −2.53, −3.07 |\n| Best candidate, 384 held-out seeds | −0.84 (se 0.04) |\n\nOn the held-out seeds STACK averaged 525.53 and the candidate 524.69. The five worst seeds were −8.30, −2.54, −2.44, −2.39 and −2.38.\n\n**Where I fell short of the brief**\n- **Search time:** only 3 generations (24 evaluations) ran instead of 30 minutes of search. Commands are cut off at 10 minutes, each evaluation took about 40 seconds, and two runs were killed with exit 137 (probably memory with batches over 32 seeds).\n- **Recheck:** I used 64 unseen tuning seeds instead of 256.\n- **Held-out:** 384 seeds instead of 512. The time ran out, so this is a cut range, not dropped seeds.\n- **Workers:** the held-out STACK run that timed out used 16 workers; everything that produced the reported numbers used 8.\n- **Retail and arbitrage edge:** both are `null`. The simulator only reports total edge per strategy, not edge split by retail and arbitrage.\n- **Skipped checks:** I didn't run the check on the reference strategy (CH) over seeds 0..999, and I didn't run `amm-match validate` on the candidate. It compiled with the repo's own compiler and ran without errors.\n\n**Next try:** a starting step around 0.03, or splitting only a few constants by regime (about 20 parameters), with more evaluations. At 0.12 the random changes cost 3 to 6 points on average, which is more than the few generations that fit can recover.\n\n`sources.json` lists two quotes: one line of the STACK contract, and the seeding line in the repo's `match.py`.\n\nUntracked dotfiles and folders I didn't create (`.bashrc`, `.claude/`, `.gitmodules` and others) are in the repository root. I left them as they are; check them before anything is submitted, since `.gitmodules` in particular could look like a submodule.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1084726,"cost":{"source":"runtime","usdMicros":897860},"inputTokens":51,"model":"claude-opus-5-5","outputTokens":17248,"runtime":"claude","turns":30,"wallClockMs":4059505}},{"artifacts":[],"attempt":1,"bundleHash":null,"device":"a4b99d560a579411","findings":[],"hash":"486e86a352ba42a2e6e4b34110dcfd62caa7e8add57caa922acdbb43b432f0ff","nodeId":"11962e58-b3a7-4802-b28c-d84384ec0541","outcome":"failed","summary":"Source bundle is 22928678 bytes of new work; the upload limit is 8388608 bytes (8 MiB) of new work. Remove unnecessary generated dependencies/caches or redundant package archives from your changes and rebuild the requested export. Preserve required source, runtime assets, declared deliverables and accepted/protected dependencies. Do not silently omit required work. Largest changed source files: [{\"path\":\"scratch/bin/uv\",\"bytes\":37512936},{\"path\":\"scratch/tmp/uv-x86_64-unknown-linux-gnu/uv\",\"bytes\":37512936},{\"path\":\"scratch/solcx/solc-v0.8.24\",\"bytes\":15020760},{\"path\":\"scratch/amm_sim_rs-0.1.0.post1-cp310-abi3-manylinux2014_x86_64.manylinux_2_17_x86_64.whl\",\"bytes\":727586},{\"path\":\"scratch/tmp/uv-x86_64-unknown-linux-gnu/uvx\",\"bytes\":330440},{\"path\":\"scratch/rs2.json\",\"bytes\":61524},{\"path\":\"scratch/Strategy.sol\",\"bytes\":19703},{\"path\":\"scratch/result.patch\",\"bytes\":14189}].","treeHash":null,"usage":{"cachedInputTokens":1180672,"inputTokens":85182,"model":null,"outputTokens":19836,"runtime":"codex","turns":10,"wallClockMs":467500}},{"artifacts":[{"bytes":26547,"hash":"25d0872bcd5ec452b572a94eb04dd280191afe4cf07459bf99ab06ffd1a98166","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e09-combine-anchors/items/b/result.json"},{"bytes":749,"hash":"ff5493d02c12fd5af787ec505a9563697bc4eaa201ea1d74049ef1d5a04614be","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e09-combine-anchors/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"aa333626543c4dee","findings":[],"hash":"495867300412fe7b60429be87c1039b0e8f54dfd3c742da1d674addae7d5dd39","nodeId":"6985b717-22ce-4968-ae80-232d5830bfe7","outcome":"completed","summary":"I built the three-anchor union and it passes the parity and gas checks. The fresh-seed confirmation and the CH calibration were not run, so there is no paired result against RS2 or STACK. `result.json` has `valid: false` and null paired figures. `sources.json` lists the four artifact JSONs by their sha256 strings, which I did not check against the live pages.\n\n**Why the confirmation did not run:** this machine has a 1-core CPU quota (`cpu.max` 100000/100000). The simulator costs about 9 s/seed for RS2-class strategies. RS2 took 69.5 s for 8 seeds, the union 75.5 s and CH 27.6 s. Two thousand fresh seeds across three arms would take about 15 hours, and the CH check on seeds 0..999 about an hour. Neither fits in the time left. I never touched seeds 5122000..5123999.\n\n**What was verified:**\n- **Generator reproduction:** T, H and S each regenerate their own code sha256 from the RS2 code with the reported params, and RS2's code hashes to f24b6ca1….\n- **Union:** I applied T, H, S in that order, then replaced `wmul(sigmaHat, toxLinear)` once with the `_anchorSigma` form. The union sha256 is `64a233b9f2f7df836092797d15490b435818cf9a680386cde7d787102b902421`.\n- **Neutral parity on 796100..796131:** with neutral weights, edges and every per-step fee match RS2 exactly (max difference 0.0).\n- **Union gas on the same 32 seeds:** afterSwap max 223,509, init max 243,143, no OOG or other halts. That is inside the <235,000 and <245,000 limits.\n- **Union vs RS2 on the 32 parity seeds:** +0.236 mean edge. This is diagnostic only, not a confirmation.\n\nI did not retry, shrink the seed count or touch fresh seeds. Everything is in `artifacts/goal/batches/e09-combine-anchors/items/b/`:\n- `result.json`\n- `sources.json`","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":821727,"cost":{"source":"runtime","usdMicros":404201},"inputTokens":38,"model":"claude-sonnet-5-5","outputTokens":14320,"runtime":"claude","turns":22,"wallClockMs":2120438}},{"artifacts":[],"attempt":1,"bundleHash":null,"device":"95564acf8eeef549","findings":[],"hash":"4a4ebc6b3aa73ffa1ec33eb601177cc48186c47d054ec21ff978a2531503b032","nodeId":"d291fc10-451e-4c22-9eae-cfa46bf57747","outcome":"failed","summary":"wrote outside the task's allowed paths: amm-challenge","treeHash":null,"usage":{"cachedInputTokens":2362496,"inputTokens":101816,"model":null,"outputTokens":13553,"runtime":"codex","turns":7,"wallClockMs":1408873}},{"artifacts":[{"bytes":42338,"hash":"d7e2ac394a4dce4325be76021b333efa6e94f4b7dfa9fd6ea06efc8bfd2a9290","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e06-rs2-wide/items/e/result.json"},{"bytes":605,"hash":"575388a94303fe51a865a3011a06624edf26c679f7bfe80734e5b97412420b6c","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e06-rs2-wide/items/e/sources.json"}],"attempt":1,"bundleHash":null,"device":"89214b73ec1e0b7b","findings":[],"hash":"4ad0ef733a530bf2e68b15a896c529436d8cda5767048d6f251ab8b78280ec92","nodeId":"9b03d82b-e2ea-42d2-8871-d7fabc6db25f","outcome":"completed","summary":"The widened-bounds search ran, but its frozen pick is no better than RS2 on held-out seeds. Both output files are written, are valid JSON and are within the size limit: `result.json` is 42 KB and `sources.json` holds 3 sources.\n\n**Checks passed first:**\n- **Setup:** the CH check on seeds 0..999 gave 525.5258821780834, exactly the expected value.\n- **Hashes:** the RS2, V10 and STACK hashes all match what the brief gives.\n- **Parity:** the generator at `params_exact` reproduces RS2's hash, and mix 0 gives edges identical to V10 on seeds 846000..846031.\n\n**The search was much shorter than planned.** Each generation took about 400 s, so only 3 generations (30 evaluations, 1200 s) fit the 25-minute stop. A fourth would have run to about 1600 s, so I didn't start it. The search did not converge; read it as a few probes near RS2, not a full search of the family. I held structure at 2 and searched the other 6 parameters.\n\n**What moved:**\n- Retention went to its new upper bound, 0.9999, in all top points.\n- Mix stayed around 0.31–0.33.\n- `rate_scale` dropped toward 0.2, with one top point at the 0.02 lower bound.\n\n**Re-check (844000..844255, against V10):** the third-ranked search point did best, +0.172 (se 0.028), and I froze it before any held-out run. Its sha256 is `f31f75ce…10b76cc`, with params [2, 0.3133, 0.9999, 0.2275, 1.7767, 295.26, 3.0951], and it passes `amm-match validate`.\n\n**Held-out (845000..845511, 512 seeds):**\n\n| Frozen vs | Mean gain | se | Retail edge | Arb edge |\n|---|---|---|---|---|\n| V10 | +0.181 | 0.023 | +1.131 | −0.950 |\n| RS2 | +0.010 | 0.016 | −0.376 | +0.386 |\n\n- **Against RS2** the gain is within noise. On the same seeds RS2 beats V10 by +0.171.\n- **Gas:** afterSwap peaks at 200,257 with no OutOfGas and no other halts. Setup gas is 243,099 for every RS2-family strategy, only about 1.9k under the 245,000 cutoff.\n\nThese differences are hundredths to tenths of a point, far below the roughly +5 over STACK the goal needs. I ran no comparison against STACK, used no seeds at or above 5,000,000, and make no board claim.\n\nFiles are in `artifacts/goal/batches/e06-rs2-wide/items/e/`:\n- `result.json`\n- `sources.json`","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":841263,"cost":{"source":"runtime","usdMicros":884427},"inputTokens":43,"model":"claude-opus-5-5","outputTokens":19050,"runtime":"claude","turns":31,"wallClockMs":3091788}},{"artifacts":[{"bytes":26972,"hash":"57365820678fa9be32a3f6645166ae81f99ff0892ac8ed6bbb7eb32468b690ab","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-rs2-port/items/b/result.json"},{"bytes":171,"hash":"54bb00111d9c846d0f787384c5b91f35f93542019e26a37d12e7f3badc4b7922","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-rs2-port/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"9e51ef2afd7c2af8","findings":[],"hash":"4c164db2b7174acb4f090756c3219d1cd8dd49163309bc2facf4fee2dab0ddb9","nodeId":"35f72a91-cebf-4800-8a59-966115c35dbf","outcome":"completed","summary":"I ported RS2 to numba and it matches the EVM. Over 200 sequences of 2,000 callbacks (400,000 in all), the largest fee difference was 3e-9 bps and none exceeded 0.01 bps.\n\n- **Port:** `rs2_port.py` has `strat_init` and `strat_after`, both njit-compiled, and the whole file is in `result.json`. The contract's branches, caps and clamps are kept. It uses float64 fractions in place of WAD integers, and `math.sqrt` in place of `_isqrt`.\n- **Constants:** `TH` has 97 named entries in source order: the header constants, then the literals in `afterInitialize`, `afterSwap`, `_posterior` and `_band`, then WAD, MAX_FEE and BPS from the base contract.\n- **Slots:** `S` matches the Solidity slot numbers 0–15. The packed slot 2 becomes lastTs plus lastSpot (`S[18]`), and the packed slot 15 becomes rate, count and meanSize (`S[15..17]`).\n- **Hash check:** the artifact's code hashes to `f24b6ca1…eaf2`, as given.\n- **Differential test:** I deployed the compiled RS2 with the repo's `EVMStrategyAdapter` and drove both with the same callbacks. The market was built as the brief describes. The EVM's fees went into the next trade, and the port kept its own state without resyncing. The mean difference was 6.9e-12 bps.\n- **Speed:** about 0.13 µs per call inside an njit loop, and about 9 µs per call from a Python loop.\n- **Fee coverage:** my synthetic market ran on the high-fee side. The median fee was about 55–60 bps and only 8–10% of callbacks were below 30 bps, so the 4–30 bps regime is thinly tested. Both sides of the 30 and 36 bps branches did run. Solidity reverts are not modelled, and the EVM never reverted in the test.\n- **Scope:** I checked the port against the EVM only, not against the real simulator batch.\n\nThe test script stays in `test/scratch` and is not delivered. The `result.json` file also lists the deviations and the slot meanings. `sources.json` cites only the RS2 artifact URL.\n\nFiles are in `artifacts/goal/batches/e08-rs2-port/items/b/`:\n- `result.json`\n- `sources.json`","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":946596,"cost":{"source":"runtime","usdMicros":650355},"inputTokens":37,"model":"claude-sonnet-5-5","outputTokens":29438,"runtime":"claude","turns":22,"wallClockMs":447094}},{"artifacts":[{"bytes":63695,"hash":"a990afc5faf95d7c854242f84b59fb01eb7d22c44f3773dfc685f85d7f71b2c0","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e09-learn-head/items/a/result.json"},{"bytes":880,"hash":"2f8c7f98bbf799bc60aab0398c9c08d2c61fc7c5014993a5bbd45e4d45b417a9","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e09-learn-head/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"aa66e5f63eecc2a5","findings":[],"hash":"4d38fd4206379b647caa6b1993f47e0553b85d204a2528446d90559226b78635","nodeId":"fb8f26d1-b030-4eea-909b-b66794956ff1","outcome":"completed","summary":"Created `result.json` and `sources.json`; both pass JSON and size checks.\n\nFinal: **−40.55 points vs RS2** (SE 0.98, 512 seeds), with zero OOG or other halts. Do not promote this head.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":9784192,"inputTokens":83544,"model":null,"outputTokens":73970,"runtime":"codex","turns":24,"wallClockMs":2575439}},{"artifacts":[{"bytes":39809,"hash":"2a85e188cbef7ef39a97a9b23345520b0dbd502a3f5036b9ba86c00ed97bfac7","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-arb-surge/items/b/result.json"},{"bytes":1086,"hash":"fdf8b8898c172450a4ec64c21e10a54c2633dc3a0bd5bedc6bf5aee100a5ad35","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-arb-surge/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"9b657b3675e34ec5","findings":[],"hash":"4d4b80c3daeefe0eb81a187181fdf5097630e8b849ebe449e13f9ce5e2ab8ac8","nodeId":"3cd59e94-d3be-466a-a832-e6f8b35307be","outcome":"completed","summary":"The arbitrage-streak surge does not improve RS2: on the held-out block 669400..669911 (512 seeds) the frozen variant measures −0.0033 ± 0.0047 against RS2. Both output files are written and parse, and `result.json` is 39,809 bytes.\n\n- **Held-out split:** the surge removes arbitrage loss as intended (arb edge +0.068 ± 0.002) but gives back the same amount of retail edge (−0.071 ± 0.005).\n- **Frozen setting:** n=5, b≈0.43 bps, r≈0.52, G=3, sha256 `c7a761ed…39da`. It passed `amm-match validate`.\n- **Search:** 44 simulated points with b > 0 over ten 64-seed blocks; only 4 beat RS2 (best +0.045 ± 0.018). Losses grow with b, down to about −0.58 on average for b above 4 bps, and the CMA mean drifted to b=0, which is RS2 itself.\n- **Recheck (669000..669255):** the top three all came back at about zero (−0.004, −0.0005, −0.001), so picking one to freeze was not a meaningful ranking.\n- **Gas:** afterSwap peaks at 222,703 (RS2 about 200,500), afterInitialize at 243,090, no halts in any arm.\n- **Checks:** the b=0 setting matches RS2 edge for edge on 669950..669981, and the CH calibration reproduces 525.5258821780834 exactly.\n- **Source:** the page shows the fragment only as a cut-off line in a figure, `if (arbCount > 3) fee += SURGE_BUMP * (arbCou`, with no prose explaining it. The cut-off suggests the original bump scales with the count; I tested only the flat b the brief specifies.\n\nThree departures from the brief's search plan, all recorded in the notes:\n- The search ran 1,693 s rather than 1,500 s, because the last generation started at 1,487 s.\n- After generation 1, points with b=0 were scored 0 without simulation (33 points), since they emit RS2's fees exactly.\n- One probe (n=3, b=5) on the parity block, at −0.47 ± 0.10, was used to start the search at b=2.5.\n\nThe surge is applied after RS2's own fee caps; placing it before them was not tested.\n\nI also ran STACK on the same held-out block for context: frozen − STACK is +0.315 ± 0.027 and RS2 − STACK is +0.318 ± 0.027. This is not the goal's confirmation run on 5000000+, which I did not run, so there is no board claim.\n\nFiles are in `artifacts/goal/batches/e08-arb-surge/items/b/`:\n- `result.json`\n- `sources.json`","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1653016,"cost":{"source":"runtime","usdMicros":4462980},"inputTokens":3884,"model":"claude-fable-5-1","outputTokens":40044,"runtime":"claude","turns":37,"wallClockMs":3300701}},{"artifacts":[{"bytes":49834,"hash":"8b5397430b4b82bd6d9082181afdd94ed971118769724db522d31f5ba0726827","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e02-search-arbside/items/a/result.json"},{"bytes":6471,"hash":"22bb3ec7a0d3f9e4bb9662559997600e4c5867874cc00c0594395069081c40f9","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e02-search-arbside/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"71ee8cbe44073cf6","findings":[],"hash":"4de2f2b1d8a8d60a15fffb5ea4a99d79ac9cc335d6f0cf854c3e50986e6cc6b1","nodeId":"e688092e-bbfd-4c0f-9f16-d7b10e95f36c","outcome":"completed","summary":"Created [result.json](artifacts/goal/batches/e02-search-arbside/items/a/result.json) and [sources.json](artifacts/goal/batches/e02-search-arbside/items/a/sources.json).\n\nHeld-out gain: **−0.0240 ± 0.0073 SE** over 512 seeds. No improvement over STACK. Validation passed; **0 OOG**, peak afterSwap gas **235,618**.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":5020672,"cost":{"source":"estimated","usdMicros":1462028},"inputTokens":66442,"model":"gpt-6.1-sol","outputTokens":32501,"runtime":"codex","turns":30,"wallClockMs":2006982}},{"artifacts":[{"bytes":3711,"hash":"33b2eaa4d851f9fd0efd0d49f371568e482329f40b1f630f42f0c770222b9ea3","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e03-confirm-v10/items/a/result.json"},{"bytes":875,"hash":"581fd5708d4d4e3c0439097f920b8997cbea06893e09f332ff159bb9c5b64840","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e03-confirm-v10/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"74cf0246a1dda0ce","findings":[],"hash":"513328770c3313e1ee1435da87cd2514b549c76f422df8a56db4cc7a2fa28751","nodeId":"10b1afca-781a-4835-815a-2d27d8334d25","outcome":"completed","summary":"V10 beats STACK by +0.1445 edge per seed (se 0.0136) on the fresh seeds 5008000..5010000, with all 2000 seeds kept, and the result is valid.\n\n- **Hashes:** both `code` strings hash to what the brief gives: V10 is `cd9bdb45…a245` and STACK is `2eaafc79…5719`.\n- **Calibration:** CH on seeds 0..999 gives mean edge 525.5258821780834, an exact match.\n- **Paired result:** n=2000, mean_diff +0.1445, se 0.0136. The five worst seeds are 5009936 (−2.80), 5008655 (−2.07), 5008878 (−1.87), 5008801 (−1.86) and 5009045 (−1.85).\n- **Where the change comes from:** V10 loses less to arbitrage, +1.267 (se 0.0075), but earns less from retail, −1.122 (se 0.0143). Average edge per seed is 524.811 for V10 and 524.666 for STACK.\n- **Gas:** neither arm had any OOG, revert, other halt, tx error or bad return. The highest afterSwap gas was 194,139 for V10 and 211,588 for STACK, against the 250,000 limit.\n\n**Run method:** a single command here can run for at most 10 minutes, and the full two-arm run would have taken about 35. So I ran the unchanged V10 harness in 8 back-to-back segments of 250 seeds, still in 20-seed chunks inside each. I then combined them using the harness's own merge and comparison code. Each seed's simulation is independent, so splitting the run doesn't change any number. I made no tuning, selection or code changes, and make no board claim.\n\nI wrote the result JSON and four sources to `artifacts/goal/batches/e03-confirm-v10/items/a/`, and I re-fetched two of the source URLs to confirm their quotes are there.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":942202,"cost":{"source":"runtime","usdMicros":742172},"inputTokens":45,"model":"claude-opus-5-5","outputTokens":10814,"runtime":"claude","turns":27,"wallClockMs":2547481}},{"artifacts":[{"bytes":24494,"hash":"86a62840ceb70eae34edc8579967ac548853fbaaeb2048f3eae78d2d8078a9a4","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-run-anchor/items/act-b/result.json"},{"bytes":15,"hash":"73608e3346e331760ac29f17144976922e84678fed8a2eb7cc66f6ef0e89a33c","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-run-anchor/items/act-b/sources.json"}],"attempt":3,"bundleHash":null,"device":"a0f92fec784312b7","findings":[],"hash":"56f9df7a489dc260fd792f0a7db5097f4ccfd6b9f0b1ec1d394441558366e17f","nodeId":"d291fc10-451e-4c22-9eae-cfa46bf57747","outcome":"completed","summary":"The run-mean anchor gives no gain over RS2, so this is a negative result. On 48 held-out seeds (929000..929047) it scored **−0.13 vs RS2** (SE 0.07), against the roughly +5.0 needed to reach 10th. I wrote `result.json` and `sources.json` (empty list, no web sources used) to the act-b folder. I did not run the JSON parse check on them, and I did not check that the clone stayed out of the commit.\n\nThe overlay replaces `actEma` and the lambda×size product with `runMean + k*(value − runMean)`, where the run mean has weight 1/n and n is capped at N. I picked kA=0.6, kF=1.3, N=800 as the best of the points I tried, but it is not significantly different from RS2 on the search block (+0.005 on 10 seeds).\n\nOn the held-out seeds it gained 0.81 on retail edge and lost 0.94 on arb edge. Gas on the held-out run peaked at 220,085 for afterSwap with 0 OOG, and afterInitialize stayed at 243,103 with no new write there.\n\n**Where I departed from the brief:**\n- **Speed:** the machine ran about 9 s per seed, so the brief's protocol was out of reach.\n- **Search:** the CMA-ES search was one generation (population 4, 10-seed blocks) instead of 25 minutes on 64-seed blocks. Its state was corrupted because my halt check counted OOG halts from the first overlay version.\n- **Hand-picked points:** the later points were hand-picked rather than CMA-driven, and 3 of them are in the log.\n- **Not run:** the re-check on 256 seeds, and the held-out set at 512 seeds (I used 48). Parity ran on 8 of 32 seeds.\n- **Gas fix:** the first overlay version used three storage slots and hit OOG in every generation-1 candidate. I packed the state into slot 16.\n- **Parity:** with the overlay off, the source is identical to RS2. With k=1 and N=1000, edges matched RS2 exactly on seeds 929600..929607.\n\nThis is not a submission candidate. Everything I built (the clone, venv, and scratch scripts) sits under `test/scratch/`, which is deleted before submission.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1415189,"cost":{"source":"runtime","usdMicros":566649},"inputTokens":57,"model":"claude-sonnet-5-5","outputTokens":20637,"runtime":"claude","turns":35,"wallClockMs":4106903}},{"artifacts":[{"bytes":59387,"hash":"44f72cc417523a9c8fc6b59ebd47bc1c1ebf35dc5d45849e40aea92dcbc7aeff","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-dual-anchor/items/b/result.json"},{"bytes":1404,"hash":"ce0af104d84dcf3bc2757c428e22a817559c4f50d9f893dbf5fb5cb7694a249b","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-dual-anchor/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"9a29c101a23c14cc","findings":[],"hash":"57c46eb2394d52a2915968119499681d92751f8209d1d2064d6e80b7f4c5ef25","nodeId":"c9751a09-b5d5-4aba-887e-632c629d95de","outcome":"completed","summary":"Created `result.json` and `sources.json` in the required directory; both validate within size limits.\n\n- Held-out vs RS2: **+0.01068** edge, 512 seeds.\n- Fresh comparison vs STACK: **+0.34150**, 2,000 seeds.\n- Zero halts; all gas limits passed.\n\nThe measured gain falls short of the roughly +5 target.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":6044672,"inputTokens":70653,"model":null,"outputTokens":28141,"runtime":"codex","turns":43,"wallClockMs":2667561}},{"artifacts":[],"attempt":1,"bundleHash":null,"device":"7f1df2a55552de06","findings":[],"hash":"59d98054b6a68f2376c514c81026dba6fe955d917b83f483582e1d09e6fb39ad","nodeId":"751aa540-f439-43bb-9ac1-3ce8ef54fa92","outcome":"failed","summary":"required outputs are missing or invalid:\nartifacts/goal/batches/e03-v10-floor/items/a/result.json: ENOENT: no such file or directory, lstat '/home/imdworker10/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/751aa540-f439-43bb-9ac1-3ce8ef54fa92/artifacts'\nartifacts/goal/batches/e03-v10-floor/items/a/sources.json: ENOENT: no such file or directory, lstat '/home/imdworker10/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/751aa540-f439-43bb-9ac1-3ce8ef54fa92/artifacts'\n\nthe agent stopped (max_turns, 61 turns) without a final message","treeHash":null,"usage":{"cachedInputTokens":3830622,"cost":{"source":"runtime","usdMicros":1622101},"inputTokens":118,"model":"claude-sonnet-5","outputTokens":37623,"runtime":"claude","turns":61,"wallClockMs":2257339}},{"artifacts":[{"bytes":38477,"hash":"cedcd5df5201048f2b679cddc6c44379f88db484e9c4c7ee6e3a72be7d1787e6","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e09-confirm-tox/items/b/result.json"},{"bytes":1063,"hash":"8c6604d55f05cf2dd706923a9a210b991edad15a63013b509f70a56492fd4e94","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e09-confirm-tox/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"a98849c24da2bfc2","findings":[],"hash":"5db6d483838e91a80d6bfc6f05163f66ad375e56578c8b7f704514e8b7b85bda","nodeId":"71968594-9c57-4872-8c84-c5dd698fa94f","outcome":"completed","summary":"Created and validated `result.json` and `sources.json`.\n\nAll 2,000 seeds completed per arm; zero OOG or other halts.\n\n- Versus RS2: **+0.23248**, SE **0.01942**\n- Versus STACK: **+0.55132**, SE **0.02087**\n\nCandidate unchanged; calibration matched exactly.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":5611776,"inputTokens":52020,"model":null,"outputTokens":15206,"runtime":"codex","turns":35,"wallClockMs":2173231}},{"artifacts":[{"bytes":51479,"hash":"d845a4b94eab87f23956fd1939c0135d955df212d1f3037f2a761c178cef7a0e","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-rs2-port/items/d/result.json"},{"bytes":1494,"hash":"bea178845f385c58b9ee08992d4b9709791adf643aacf3761f79d41e5802768e","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-rs2-port/items/d/sources.json"}],"attempt":2,"bundleHash":null,"device":"ab846a7d68ed31f8","findings":[],"hash":"5f6bd7383ae348c4586e9dafa8f5941888cd25c37d8df19fe8bc43776388ae6b","nodeId":"56984420-a1f2-4c06-86b4-91264ea9d26c","outcome":"completed","summary":"Completed both JSON outputs in the requested directory.\n\nThe port compiles with Numba and passed 400,200 EVM callback comparisons. Maximum fee error: **3.79e-9 bps**; none exceeded 0.01 bps. `result.json` is **51,479 bytes**, within the limit.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":933504,"inputTokens":52477,"model":null,"outputTokens":19185,"runtime":"codex","turns":6,"wallClockMs":521666}},{"artifacts":[],"attempt":1,"bundleHash":null,"device":"93c37f17670e4d98","findings":[],"hash":"607d9851fd074c3b5ab3a493a1fb04fd9243a2dafc45f56fb8f79d0788225dac","nodeId":"c0a9bcd8-2bb3-4c22-845d-a1089ab04f07","outcome":"failed","summary":"required outputs are missing or invalid:\nartifacts/goal/batches/e07-fork-mine/items/f4/result.json: ENOENT: no such file or directory, lstat '/home/imdworker2/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/c0a9bcd8-2bb3-4c22-845d-a1089ab04f07/artifacts'\nartifacts/goal/batches/e07-fork-mine/items/f4/sources.json: ENOENT: no such file or directory, lstat '/home/imdworker2/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/c0a9bcd8-2bb3-4c22-845d-a1089ab04f07/artifacts'\n\nthe agent stopped (max_turns, 61 turns) without a final message","treeHash":null,"usage":{"cachedInputTokens":3750097,"cost":{"source":"runtime","usdMicros":1538101},"inputTokens":118,"model":"claude-sonnet-5","outputTokens":32325,"runtime":"claude","turns":61,"wallClockMs":1861498}},{"artifacts":[{"bytes":31173,"hash":"f5ddedb5c187ceb99c8f991a0845e70fde8db3ba644d924d257811a07e8f836f","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e06-confirm-rs2/items/b/result.json"},{"bytes":1918,"hash":"b6b3068180a30824f0939779648f52580f9129a00a098201fb72f8a38d8e8bdc","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e06-confirm-rs2/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"43ece644a892418a","findings":[],"hash":"6095224af6cb2fc322f05a5c462f16fdd3db49949139c383f903c972a155a66e","nodeId":"94528034-39d9-45a8-878b-2f26af339f9e","outcome":"completed","summary":"Completed all 2,000 seeds per arm; calibration matched exactly and all halt/error counters were zero.\n\nRS2 paired gains:\n- vs RS1: **+0.087808**, SE 0.011443\n- vs V10: **+0.162747**, SE 0.012477\n\n[Result](artifacts/goal/batches/e06-confirm-rs2/items/b/result.json) · [Sources](artifacts/goal/batches/e06-confirm-rs2/items/b/sources.json)\n\nJSON, statistics, hashes, and source quotes verified.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":3557120,"inputTokens":59296,"model":null,"outputTokens":19016,"runtime":"codex","turns":34,"wallClockMs":2164109}},{"artifacts":[],"attempt":1,"bundleHash":null,"device":"9676188abd3783f2","findings":[],"hash":"617ebcaa66136410e09f1f7ce920c88e838812fa66f3195147cfc369c8aabfe5","nodeId":"6bc9c6c1-42f3-4507-995a-0d567f8cc6b2","outcome":"failed","summary":"artifact upload failed: result (524)","treeHash":null,"usage":{"cachedInputTokens":15901312,"inputTokens":193447,"model":null,"outputTokens":55866,"runtime":"codex","turns":71,"wallClockMs":4519993}},{"artifacts":[{"bytes":47666,"hash":"6851aa886b12c4f7e0cfff202ce20f8f8de17cf364ccea3beccfaffbb4916fbc","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e02-board-fit/items/fit-a/result.json"},{"bytes":4362,"hash":"1bc058026aee5641279b7128953dacd594b7d91eba3a7a9d882a6342ece5b427","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e02-board-fit/items/fit-a/sources.json"}],"attempt":1,"bundleHash":null,"device":"726aa3006eb6a1e1","findings":[],"hash":"64374814c791ec591261346857635edc1be69f9e6dbff5dba2bdcd00889cd240","nodeId":"ea88e78d-4403-40ea-b273-a856563c3440","outcome":"completed","summary":"Created `result.json` and `sources.json` in the requested directory.\n\nCompleted all fits, residual rankings, gap regressions, tercile comparisons, and testable rule hypotheses. Validated calculations and all seven live source quotes. Result size: 47,666 bytes.\n\nMain finding: leaders’ fees are less retail-volume-sensitive than STACK’s, with near-zero average bid/ask lean.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":185472,"inputTokens":32670,"model":null,"outputTokens":6558,"runtime":"codex","turns":4,"wallClockMs":173242}},{"artifacts":[{"bytes":44387,"hash":"ab320fb2cc0b41ef7f7ea0f451e1f6654c0fe879a9d51a1e37f56a4d020aa3f0","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e06-rs-post/items/b/result.json"},{"bytes":1307,"hash":"d9ebbaef9a723f96ee3c20d7cb4d0e840f69841a46bef8dd505fd03ebab5ad8c","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e06-rs-post/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"8a28a065f3378b87","findings":[],"hash":"665613f4664e334c6b2ca8f20678a897462bef20e27840e67ace0acd0adc9104","nodeId":"14ad044f-053b-4b24-97e9-af9436de8d0b","outcome":"completed","summary":"Created and checked `result.json` and `sources.json`.\n\nHeld-out, 512 seeds:\n\n- Versus V10: +0.1797, SE 0.0253.\n- Versus RS2: −0.0108, SE 0.0150.\n- Zero halts; validation passed.\n\nThis experiment did not demonstrate an improvement over RS2.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":7573504,"inputTokens":71437,"model":null,"outputTokens":40890,"runtime":"codex","turns":41,"wallClockMs":4007274}},{"artifacts":[],"attempt":1,"bundleHash":null,"device":"a31e321b410aaa02","findings":[],"hash":"69ed1e57b46aedab1bfbbfe3a3e109481ee3ae9d9cd08bc34bd7883048b604aa","nodeId":"56984420-a1f2-4c06-86b4-91264ea9d26c","outcome":"failed","summary":"wrote outside the task's allowed paths: amm-challenge","treeHash":null,"usage":{"cachedInputTokens":1567341,"cost":{"source":"runtime","usdMicros":5127186},"inputTokens":706,"model":"claude-fable-5-1","outputTokens":51433,"runtime":"claude","turns":30,"wallClockMs":885981}},{"artifacts":[{"bytes":63930,"hash":"4149ec2df6ba9d2bc150b48484b7c39831ac544700a713f715e63549fbf747b4","mediaType":"text/markdown","name":"merge","path":"artifacts/goal/roots/1/03/result.md"}],"attempt":1,"bundleHash":null,"device":"b3280f20e86b4e0d","findings":[],"hash":"6a4355b5e067a091b1c7fe0b7497cee16105ddb2036038a76176362ca1e46e4c","nodeId":"5cb8b1a9-2813-4843-a4c9-5ca41cef587d","outcome":"completed","summary":"Created [result.md](artifacts/goal/roots/1/03/result.md), merging all 25 inputs with disagreements, source warnings, and coverage gaps preserved.\n\nChecked: 63,930 bytes, finalist metrics, source coverage, and losslessly retained RS2 code. No supplied result establishes the required gain over STACK.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":4070272,"inputTokens":162864,"model":null,"outputTokens":31060,"runtime":"codex","turns":5,"wallClockMs":722007}},{"artifacts":[{"bytes":42632,"hash":"63e9c90d458905c0d6aab63518ca2fbac2643e4ae7f316d2e1a0f17c0d4de1f6","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e04-retail-state/items/a/result.json"},{"bytes":198,"hash":"3526b85d98b520a83fbf027baa57e396bdb36c4b6b0adef5507fcacc9686c849","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e04-retail-state/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"7e0ab48c9416958a","findings":[],"hash":"6bb4258c5d8758430e74c5feef39ab3bf944c69246f3e1a9de8d31f631958f35","nodeId":"52095519-89ab-4297-8ce6-6d7098f23d15","outcome":"completed","summary":"I built the retail-flow-state mechanism, but the run is **incomplete** and found no real gain over V10. I ran out of time after a 64-seed partial recheck, so I skipped the 256-seed recheck and the 512-seed held-out run, and no hash was frozen.\n\n**What was built**\n- The V10 code matched its expected hash (`cd9bdb45…`). It feeds a hidden estimate of retail rate and size into the fee inputs only, which are `lambdaHat` and the flow-size term.\n- Later prints count with weight 1. First prints count with weight 1 minus V10's posterior arb probability. V10's price and stale updates are unchanged.\n- With the mix set to zero, results are identical to V10: the edge difference is 0.0 on seeds 640000–640019.\n- My first version ran out of gas, so the new state is packed into a single storage slot.\n\n**Search:** 3 structures, 4 generations, 12 candidates in total, seeded from 401, on 32-seed blocks inside 640000–640127. That is far from a converged search, and it took about 25 minutes instead of the 20 allowed.\n\n| Structure | 32-seed results vs V10 |\n|---|---|\n| A: weighted counts only | all 6 lost, −0.27 to −0.61 |\n| B: counts plus size moments | −1.24 to +0.018 |\n| C: B plus a capped fee-based correction for missing flow | −1.70 to +0.17 |\n\n**Recheck (644000–644063, 64 seeds):** both finalists came from structure C.\n- The best, `de391f5c…`, gave mean_diff **+0.033**, SE 0.072, worst seed −1.30. Its retail edge changed by −1.45 and its arb edge by +1.48. Those two match the total difference to about 1e-13.\n- The second gave −0.117 ± 0.094.\n- So the mechanism mostly moves edge from retail to arb protection rather than adding net edge.\n\n**Gas:** zero OOG and zero halts on every arm. The best candidate peaks at 210,819 in `afterSwap`, and the highest across the search was 218,026, both under the 235k target. `afterInitialize` peaks separately at 220,987. The frozen-candidate Solidity passed `amm-match validate`.\n\n`result.json` labels the delivered code as a provisional pick, not a confirmed result. It also includes the search log, the seed list (no seeds at or above 5,000,000 were used), the harness and search sources, the limitations, and no board claim. `sources.json` cites only the V10 artifact hash.\n\nFiles are in `artifacts/goal/batches/e04-retail-state/items/a/`:\n- result.json\n- sources.json","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1099173,"cost":{"source":"runtime","usdMicros":1076879},"inputTokens":44,"model":"claude-opus-5-5","outputTokens":21551,"runtime":"claude","turns":29,"wallClockMs":2201329}},{"artifacts":[{"bytes":2510,"hash":"81c23f1d4bc0f81ae375182d733f9a78cb06924e6ca33f262e7ebcb913be21a4","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e03-confirm-v10/items/b/result.json"},{"bytes":1308,"hash":"57efab063f9a613164cf2ba6f258165edb3b006ccecfae405b2f54b531bc897f","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e03-confirm-v10/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"74f6c6912a376f27","findings":[],"hash":"6bb9b27ceaef91355e14944bc812dc259cf7ef283ba0fd2b453a2da0cd8a538e","nodeId":"48b90130-285a-4242-bbe5-eb3ae5573eda","outcome":"completed","summary":"Wrote both JSON outputs. Confirmation valid across all 2,000 seeds:\n\n- Paired gain: **+0.12686215**, SE **0.01391195**\n- No OOG, reverts, or other halts\n- Calibration matched exactly\n- JSON parsing, size limits, and source quotes verified","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1494528,"inputTokens":25644,"model":null,"outputTokens":8488,"runtime":"codex","turns":19,"wallClockMs":993012}},{"artifacts":[{"bytes":50521,"hash":"006528385b4275168cda509fc6df728fda85f30e695b3fad6ee430d39d61b3c9","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e06-rs-post/items/a/result.json"},{"bytes":1258,"hash":"db388aeb8673ea77a97f54c4145d34aef958b1609b509c6f69f5e6ddedb1efdc","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e06-rs-post/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"8a0937587f04a986","findings":[],"hash":"6c237783404f2ff5e12ad1e13b98798beaaa1c9600f000af2ca8c08515201183","nodeId":"cd46a53f-5eee-4bfe-a6c3-ed8ce2c24f3c","outcome":"completed","summary":"Created and checked [result.json](artifacts/goal/batches/e06-rs-post/items/a/result.json) and [sources.json](artifacts/goal/batches/e06-rs-post/items/a/sources.json).\n\nHeld-out delta versus RS2: **−0.102 edge** (SE 0.023; 512 seeds). Zero halts. This candidate did not improve on RS2.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":9180672,"inputTokens":88961,"model":null,"outputTokens":75585,"runtime":"codex","turns":44,"wallClockMs":2674187}},{"artifacts":[{"bytes":29752,"hash":"8ab5bea783899fcf368c95a457ed18810945e1cdc34ed21f836f86a5dbef1e2c","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e06-confirm-rs2/items/a/result.json"},{"bytes":1172,"hash":"faca9f07be7e7fb230053069a15ce02b4053958747af7bf182077cd1cd10a525","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e06-confirm-rs2/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"8af9903f4ad1eed0","findings":[],"hash":"6c6319b01a03b6ed63f43676f8f1fb75230ef2b6c6a6d94bfe8b2b9cb56e74c0","nodeId":"294fe945-3766-4097-901e-eb62245cba3c","outcome":"completed","summary":"The RS2 confirmation run finished and is valid. Against RS1 it gains +0.092 per seed, and against V10 +0.164, on the fresh seeds 5104000..5105999 (all 2,000 ran). The calibration check came out exactly right, and no arm had a single halt.\n\n- **Setup and checks:** setup ran cleanly at the pinned checkout. The sha256 of all three artifact codes matches the brief, and RS2 passed `amm-match validate`.\n- **Calibration:** CH on seeds 0..999 gave a mean edge of 525.5258821780834, an exact match. It ran before anything else.\n- **Runs:** I used the V10 `harness_source` unchanged, with each arm alone against VanillaStrategy in 20-seed chunks and gas counted per chunk. RS2, RS1 and V10 each ran once on every seed in order. Nothing was tuned, selected, rerun or dropped.\n\n| | n | mean_diff | se | wins / losses | worst seed (d) |\n|---|---|---|---|---|---|\n| RS2 vs RS1 | 2000 | +0.0915 | 0.0115 | 1122 / 878 | 5105662 (−2.42) |\n| RS2 vs V10 | 2000 | +0.1639 | 0.0121 | 1222 / 778 | 5105662 (−2.33) |\n\n- **Retail vs arbitrage:** RS2 earns more from retail (+1.444 ± 0.014 vs RS1, +1.471 ± 0.013 vs V10) but loses more to arbitrage (−1.353 ± 0.007 vs RS1, −1.307 ± 0.006 vs V10). The two parts add back to the total to within 1.1e-13.\n- **Mean edge per arm:** RS2 521.853, RS1 521.762, V10 521.690. All three score about 5 lower here than RS1's earlier run on seeds 5102000..5103999. Only the paired differences can be compared across blocks.\n- **Gas:** the highest successful afterSwap call was 203,671 for RS2, 202,468 for RS1 and 194,858 for V10, all under the 250,000 limit. Out-of-gas, revert, other-halt, transaction-error and bad-return counts are all 0 in every arm, including the Vanilla baseline.\n\nThe result makes no board claim. `sources.json` lists six sources with exact quotes: the three artifacts' sha256 lines, the V10 harness, the CH file and the pinned `match.py`. Both files parse as JSON, and `result.json` is 29,752 bytes, under the 64,000 limit.\n\nFiles are in `artifacts/goal/batches/e06-confirm-rs2/items/a/`:\n- result.json\n- sources.json","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":652757,"cost":{"source":"runtime","usdMicros":677917},"inputTokens":40,"model":"claude-opus-5-5","outputTokens":11022,"runtime":"claude","turns":22,"wallClockMs":1738881}},{"artifacts":[{"bytes":60123,"hash":"147e5a3cecc8ce31dd1f40993aa1a3ac450b0bcc27e57c22ceb529eed4f79c3c","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e06-rs2-wide/items/a/result.json"},{"bytes":953,"hash":"e7f38501718af48d5ffcc68320589700689fe94356f7663cb426b8292325a559","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e06-rs2-wide/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"7d2db8d9021f8063","findings":[],"hash":"6ca2f3bf239ce9440285cfde0f94f18013a33e8a0056c4a514a700a3ff601438","nodeId":"3a69b783-af54-4226-ab9f-63e1ed3929eb","outcome":"completed","summary":"Created [result.json](artifacts/goal/batches/e06-rs2-wide/items/a/result.json) and [sources.json](artifacts/goal/batches/e06-rs2-wide/items/a/sources.json).\n\n177 search evaluations completed. Held-out: +0.2112 vs V10, −0.0042 vs RS2—no demonstrated RS2 improvement. Zero halts. Validation, hashes, statistics, source quotes, and JSON size checks passed.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":4370710,"inputTokens":71114,"model":null,"outputTokens":28205,"runtime":"codex","turns":39,"wallClockMs":1885794}},{"artifacts":[{"bytes":46190,"hash":"39f1cf65ced0e274838409dd423cbb2a5006c69d9b7cb8655d3f0029ab54b0dc","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e03-v10-retail/items/a/result.json"},{"bytes":3135,"hash":"c694bd83cf924370a119497a02c7208895b022b0e31c7c14ff4b10d48744918a","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e03-v10-retail/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"75bef36d3764a939","findings":[],"hash":"6e31e9b232659a67db10066126722aa708758a7608fe8eac977e2086df286419","nodeId":"5a396aee-04fa-4df4-ac43-bf0871311ee2","outcome":"completed","summary":"Created [result.json](artifacts/goal/batches/e03-v10-retail/items/a/result.json) and [sources.json](artifacts/goal/batches/e03-v10-retail/items/a/sources.json).\n\nNo variant beat V10. Unchanged V10 confirmed **+0.11695 vs STACK** (n=2,000; SE 0.01502), with zero OOG. Audits, JSON validation, and size checks passed.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":7832960,"inputTokens":86975,"model":null,"outputTokens":32946,"runtime":"codex","turns":41,"wallClockMs":2380307}},{"artifacts":[{"bytes":52434,"hash":"d5e1812f8372c75f8d721f54df57747166b95dbfc588979e494be22b1469b32f","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-arb-skew/items/b/result.json"},{"bytes":1137,"hash":"809f2ecc21c097a74fbb0ee0a3fefc60e8599be0cb216656be4db08f4dfbe891","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-arb-skew/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"a09316cd893b3b67","findings":[],"hash":"705424d73ae55fb69123813e2036ad9bf6f4af89b171f494c0b42a11468e8817","nodeId":"ba1a607c-a69e-4ffa-962c-717aa910322e","outcome":"completed","summary":"Wrote [result.json](artifacts/goal/batches/e08-arb-skew/items/b/result.json) and [sources.json](artifacts/goal/batches/e08-arb-skew/items/b/sources.json).\n\nHeld-out gain: **+0.3053 vs RS2** (SE 0.0342, 512 seeds). Zero halts; gas limits passed. JSON and code hash validated.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":11293312,"inputTokens":81039,"model":null,"outputTokens":55676,"runtime":"codex","turns":59,"wallClockMs":4619487}},{"artifacts":[{"bytes":56089,"hash":"6784e773017398d6ed2f9011bfe9601c1669e21567759f04f692c46a6bfa2e05","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-vanilla-quote/items/c/result.json"},{"bytes":1834,"hash":"275f4c5e335fd67fb052e6bae61a1693b67baf65f564b8fdc086a7aa45554e2c","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-vanilla-quote/items/c/sources.json"}],"attempt":1,"bundleHash":null,"device":"992fb0c2029425f3","findings":[],"hash":"71b61ef8d7296324e17a406e2241b8f0ae90b736a8e8c4e88a2c2deabe816469","nodeId":"3e6998de-f496-4715-993e-6a7265809f4a","outcome":"completed","summary":"Created both JSON outputs: `result.json` and `sources.json`.\n\n- RS2 held-out gain: **+0.1067**, SE 0.0180, n=512.\n- STACK confirmation gain: **+0.4614**, SE 0.0144, n=2,000.\n- Zero halts; gas limits passed.\n\nAll checks passed. The gain remains below the top-10 target.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":9237760,"inputTokens":157528,"model":null,"outputTokens":46587,"runtime":"codex","turns":55,"wallClockMs":4291084}},{"artifacts":[{"bytes":41925,"hash":"9e413c23c0cf996711bab9ae02c8767e001f708d052fdefb5264d91a703eb508","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e03-restable/items/b/result.json"},{"bytes":3147,"hash":"882ce6aa606db132189c81211a8cb9996e90162882ec864f507aa59c9161e2a0","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e03-restable/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"6ee31f3a4c62909d","findings":[],"hash":"74a6a143829440a7a2d4e44cc44cab18e03eca9b16fe39b1fe11457851126ac5","nodeId":"07d2183e-7ae4-4b1a-97c1-85231c889650","outcome":"completed","summary":"Created [result.json](artifacts/goal/batches/e03-restable/items/b/result.json) and [sources.json](artifacts/goal/batches/e03-restable/items/b/sources.json).\n\n111 evaluations; held-out gain **−0.03893**, SE **0.01816**, with zero OOGs. Retain STACK; confirmation seeds remain untouched.\n\nJSON, size, hash, consistency, and source-quote checks passed.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":9931264,"cost":{"source":"estimated","usdMicros":2631477},"inputTokens":90382,"model":"gpt-6.1-sol","outputTokens":46446,"runtime":"codex","turns":48,"wallClockMs":2925149}},{"artifacts":[{"bytes":63775,"hash":"0f362fa1301561046e87c41c89f3a078e9682f4dbd15e3b395c795f85d638379","mediaType":"text/markdown","name":"merge","path":"artifacts/goal/roots/1/01/result.md"}],"attempt":1,"bundleHash":null,"device":"b27f87f255fd9efe","findings":[],"hash":"75ac6130c300e6f9d3eb1f6a4289bf4e9cbfb62677d0a78529a2b553b8a1f7b0","nodeId":"2345bf18-2357-451a-bd28-37e3e4cc4365","outcome":"completed","summary":"Created [result.md](/home/imd14/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/2345bf18-2357-451a-bd28-37e3e4cc4365/artifacts/goal/roots/1/01/result.md), merging all 25 results with provenance, disagreements, and caveats.\n\nVerified hashes and size: **63,775 bytes**. Left untracked.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":4439296,"cost":{"source":"estimated","usdMicros":8247246},"inputTokens":168625,"model":"gpt-6-astra","outputTokens":42434,"runtime":"codex","turns":7,"wallClockMs":1218780}},{"artifacts":[{"bytes":25365,"hash":"b7f8861476966d3b99562277667b9555c0f8ddbaa65164113ace71e2678f9a1f","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-public-search/items/code/result.json"},{"bytes":1766,"hash":"690f41b49611a31cf9cb4fe9410c4248ae6aeecbbc3bee871a95f1dee8babc40","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-public-search/items/code/sources.json"}],"attempt":1,"bundleHash":null,"device":"65953ebb855c1b23","findings":[],"hash":"7782ecae55352fa656a01800d1e1991e3d0178b722222ffb69ae7bed39241acd","nodeId":"1a539a85-2b59-4ccd-a32b-392a8b44219e","outcome":"completed","summary":"Created and checked `result.json` and `sources.json`.\n\nFound one qualifying strategy gist. Across 256 seeds it trails RS2 by **142.66 edge** (SE 2.16), with **zero OOG halts**. CH calibration matched exactly. Both outputs meet the size limits and remain untracked.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":2475776,"inputTokens":107045,"model":null,"outputTokens":12656,"runtime":"codex","turns":9,"wallClockMs":808566}},{"artifacts":[{"bytes":18096,"hash":"94a41a62af14b359c1d634f12ecc047d11e4ee41057c02c9b7c1de8829a86e0d","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-replica/items/b/result.json"},{"bytes":1079,"hash":"d5854a5aa794161bdc854b158aaa5823a87e8f67f64049c6b4d70ba32b4072f2","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-replica/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"9bc523a1f3e85366","findings":[],"hash":"77ba5c7dea1277d2eab8c187feda4ce0a39d8ba8f8059783bbb827e6760dc68b","nodeId":"93c15f8a-bfd8-48e5-8602-bb20264312c8","outcome":"completed","summary":"I built a numba replica of the market and wrote it to `artifacts/goal/batches/e08-replica/items/b/result.json` (18 KB), with sources in `sources.json`. Both files parse. Across all the checks below, the replica's results fall within about one standard error of the real engine's.\n\n**Validation**\n\n| Check | Real engine | Replica | Difference | se |\n|---|---|---|---|---|\n| CH, seeds 0..999 | 525.53 (from the brief) | 526.92 | +1.39 | about 3.9 |\n| Flat 30 bps vs Vanilla, seeds 0..255 | 347.92 | 347.71 | −0.21 | 4.42 |\n\nI didn't re-run real CH on seeds 0..999 myself. The real engine took over 10 minutes per 1,000 markets here, so I used the brief's 525.5258821780834. The se of about 3.9 assumes the real run has the same spread as the replica's own 2.77.\n\n**Transfer** (real: paired over CH on 128 seeds from 686100; replica: paired on 4,096 markets)\n\n| Variant | Real delta | Replica delta |\n|---|---|---|\n| Base fee +3 bps | −0.95 ± 0.10 | −0.92 ± 0.02 |\n| Stale shift ×0.8 | −7.06 ± 0.22 | −6.79 ± 0.03 |\n| Lambda coefficient ×1.5 | −4.06 ± 0.22 | −3.96 ± 0.03 |\n| All three together | −12.69 ± 0.24 | −12.58 ± 0.04 |\n\nThe brief could be read as one combined variant or three separate ones, so I ran both. The replica also splits each delta into retail and arbitrage parts; those are in the file.\n\n**Speed:** about 165–175 markets per second on 8 processes, against about 1.4 per second for the real engine on this machine.\n\n**Where it doesn't match the real engine** (also listed in the file):\n- **Random numbers:** the replica uses numpy's generator instead of Rust's, so individual market paths differ and only the averages can be compared.\n- **Strategy maths:** CH runs in ordinary floating point rather than Solidity's 18-decimal integer rounding.\n- **Gas:** there's no gas metering, so out-of-gas halts can't happen. Count those with `gas_stats()` on the real engine.\n- **Vanilla pool:** it is fixed at 30 bps, which matches the real one.\n- **Outputs:** only edges and retail volume are tracked, not profit-and-loss or per-step figures.\n\nOne small wording slip in the file: in the first deviation note, the retail order-size formula reads \"LogNormal(ln(mean)-0.6^2... i.e. mu=ln(mean)-0.5*1.2^2, sigma 1.2)\". The code itself is correct. The approval prompt blocked my fix, and I left it as is.\n\nThe git status shows untracked dotfiles in the workspace root (`.bashrc`, `.claude/` and others). I didn't create them and haven't touched them.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1066342,"cost":{"source":"runtime","usdMicros":1103046},"inputTokens":40,"model":"claude-opus-5-5","outputTokens":18276,"runtime":"claude","turns":21,"wallClockMs":2304281}},{"artifacts":[{"bytes":34229,"hash":"067627a024da160124a2029a20370025d13f3ef8ea4c8d7a93c2bcaa70d2f4b8","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e03-v10-retail/items/b/result.json"},{"bytes":2181,"hash":"f879cb7ce39ab1ca0691c538217fca4a2aad9aeb68701c324eb153a38ab3b6f1","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e03-v10-retail/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"78362912813d42a5","findings":[],"hash":"786d1e221f2eea09fc41da57b1abc17d29e9ca512df7d573dfc76d7d7fbfe0c6","nodeId":"afdf700b-c00c-4277-a719-9432c48e55ca","outcome":"completed","summary":"Created `result.json` and `sources.json`; JSON, arithmetic, hashes, size limits, and all nine source quotes passed checks.\n\nC28 gained **+0.1534 vs STACK**, but only **+0.00188 ± 0.00256 SE vs V10**. Zero OOG.\n\nConfirmation is marked noncompliant with strict single-pass rules: 64 frozen seeds were repeated after a postprocessing failure.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":9211776,"inputTokens":92793,"model":null,"outputTokens":48281,"runtime":"codex","turns":50,"wallClockMs":3386902}},{"artifacts":[{"bytes":32413,"hash":"c8be8609c7d5dd7fb803f7006244c84679af700de81d0b8a704d9f51c5b4a3b5","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-public-search/items/writeups/result.json"},{"bytes":2715,"hash":"dd9e123b05f7df7754932429402f091e81f42441ab6b0f7b5170f5e2d584fdbe","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-public-search/items/writeups/sources.json"}],"attempt":1,"bundleHash":null,"device":"868f4d64276861c0","findings":[],"hash":"79dcbbe2d39cee058ed4110285b2a9a2694b5e229e28b803501cb58a6918d750","nodeId":"8785a386-7b3e-4206-9655-08675c8ac39f","outcome":"completed","summary":"Created both JSON outputs and checked their structure, size, hashes, and 13 source quotations.\n\nBenchmarked three strategies; none beat RS2. Best was CH: −1.84 edge (SE 0.07) over 256 seeds, with zero OOG halts. Unverified leads and search gaps are documented.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":5431936,"inputTokens":182132,"model":null,"outputTokens":19770,"runtime":"codex","turns":7,"wallClockMs":584689}},{"artifacts":[{"bytes":29369,"hash":"5f986da38d504fca27e1d59705c613c6c9724e931af6cc86bb6439569b416d41","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-sticky-dev/items/b/result.json"},{"bytes":671,"hash":"f02ce0a269b585f10f5ca10e4b629cf4b87e0e2f7a8c7e1e32eedfe8bdc667ee","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-sticky-dev/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"9ab27edcfd62be02","findings":[],"hash":"7f1110c710b78b172f7a47297fe0487b90fdc81a0eba4f8b57886487a2b04391","nodeId":"e36fbb06-85c1-4057-b71c-bb5ea7e0e097","outcome":"completed","summary":"The sticky-deviation mechanism didn't help RS2. Most of the gain I measured comes from a cubic toxicity term I added, not from the sticky peak-hold itself. Both output files are written and parse as valid JSON (`result.json` is about 29 KB, under the 60,000-byte limit).\n\n**Held-out result (seeds 649400..649911, n=512, each strategy alone vs VanillaStrategy):**\n\n| | mean_diff vs RS2 | se |\n|---|---|---|\n| Frozen candidate | **+0.126** | 0.030 |\n| Cubic term only (both sticky weights at 0) | +0.108 | 0.029 |\n| Frozen minus cubic-only (the sticky part) | +0.018 | 0.011 (not significant) |\n\n- **Edge split for the frozen candidate:** retail −0.237, arb +0.364. It charges more when toxicity is high and loses less to arbitrage.\n- **Worst seeds:** 649893 (−7.43), 649512 (−4.36), 649505 (−3.77), 649666 (−3.46), 649795 (−2.87).\n- **Gas:** no halts or out-of-gas. afterSwap peaks at 226,113, against 202,398 for RS2 on the same seeds; that is under the 235,000 limit but with only about 9k to spare. afterInitialize is unchanged at 243,099 and writes no new slot.\n- **Frozen parameters:** d=0.515, w_fee=0, w_stale=0.049, c3=7.32. The sha256 is in `result.json`.\n- **Size:** about +0.1 locally is roughly +0.07 on the board at the 0.65 transfer rate, far short of the +5 the goal needs.\n\n**What I did:**\n- **Generator:** builds on RS2 and adds the peak-hold in a new slot (`slots[16]`). With all weights at 0 it matched RS2 exactly on 649950..649981, both with and without the new code path present.\n- **The \"cubic term\":** RS2 has no cubic toxicity term, only linear and quadratic. I read \"a multiplier on the cubic term\" as the coefficient of a new cubic term, which is 0 when neutral. That is the term that produced the gain.\n- **Search:** CMA-ES with seed 89, 72 evaluations, 1499 s, on 64-seed blocks from 646100..646675. After 3 generations I narrowed the ranges because my first cubic range was far too wide: large cubic terms lost 14 to 86 and large stale weights lost up to 1.6. Every sizeable sticky weight lost, and the search pushed both weights toward zero. Both phases are recorded in the result.\n- **Re-check (649000..649255):** the top 3 scored +0.082, +0.087 and +0.124. I froze the best of these.\n\n**Source:** the only mention on benedict.dev is one truncated line in a decorative code figure: `uint256 stickyDev = max(dev, wmul(STICKY_D,`. The page gives no decay value, doesn't say how the value is used, and says nothing about a cubic term. That is noted in the result.\n\n**Other notes:**\n- I ran no confirmation against STACK on seeds from 5000000 up, because this item didn't ask for one. To move the board, the thing worth testing is the cubic term; sticky deviation can be dropped.\n- `git status` shows untracked dotfiles in the repo root that I didn't create: `.bashrc`, `.gitmodules`, `.claude/`, `.mcp.json` and others. I left them alone. All my working files are in `test/scratch/`.\n\nFiles are in `artifacts/goal/batches/e08-sticky-dev/items/b/`:\n- `result.json`\n- `sources.json`","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1163492,"cost":{"source":"runtime","usdMicros":1200917},"inputTokens":3856,"model":"claude-opus-5-5","outputTokens":22715,"runtime":"claude","turns":28,"wallClockMs":2401815}},{"artifacts":[{"bytes":30119,"hash":"304e598a017a2bb5ab5712c8aa5c73efc1b24eb3dec863b4ecdeaa966d8e1235","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e05-confirm-rs/items/b/result.json"},{"bytes":861,"hash":"d82122a44d743c7665464821716b7a35a4974290d70bc21317b1e0d6aaa7db72","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e05-confirm-rs/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"41822d343cdb63ba","findings":[],"hash":"7ff06c992b7d91a3027667dc9e89c559c200067545d1c130fb4be644627f2e32","nodeId":"8db8946e-7bb9-440f-a682-a85721d00bb7","outcome":"completed","summary":"Created `result.json` and `sources.json` in the requested directory.\n\nAcross all 2,000 seeds, RS1 gained:\n\n- vs V10: **+0.0849085**, SE **0.00840081**\n- vs STACK: **+0.213804**, SE **0.0134587**\n\nCalibration matched exactly. All arms had zero execution failures. JSON, hashes, seed coverage, sizes, and source quotes passed checks.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1435154,"inputTokens":40296,"model":null,"outputTokens":8617,"runtime":"codex","turns":13,"wallClockMs":613795}},{"artifacts":[{"bytes":23261,"hash":"8f9709296de80639f484223bc8889d9815ec05e4cba885c1e5bebc5d302539f1","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-replica/items/e/result.json"},{"bytes":2835,"hash":"dcb520f6dea536eb33eff75ff9149bbbd7b292243b83583eb462a39a9cb2ea36","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-replica/items/e/sources.json"}],"attempt":1,"bundleHash":null,"device":"9b84a1e2e2a9ac5e","findings":[],"hash":"84b03d6b75c43b100b51eb9efc67ba4e8df70bad11a711c621b0cf8be2e32a3e","nodeId":"4adb7c9c-d586-462f-ae74-4f5df6f50a5c","outcome":"completed","summary":"Created `result.json` and `sources.json` in the requested directory.\n\nReplica: ~1,410 markets/second with eight processes. All three transfer estimates agree within one standard error. Zero OOG halts. JSON, size, hash, and extracted-source checks passed.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1650688,"inputTokens":52824,"model":null,"outputTokens":15295,"runtime":"codex","turns":7,"wallClockMs":457398}},{"artifacts":[{"bytes":22665,"hash":"9e843df2dbb4045dc377215155c2c3954ee6b23dc0c700c9bd06d0175621f8ca","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e03-v10-floor/items/a/result.json"},{"bytes":434,"hash":"3b9e853e9888b2e354fd47e854ecb986055dd7e349aaf2bfed7fb5e9eb24d095","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e03-v10-floor/items/a/sources.json"}],"attempt":2,"bundleHash":null,"device":"7e7a3ab8f6768773","findings":[],"hash":"8c827c178d30a7de5619a91b4c5f45ad22ea1097af94d763103fa05240c59dc3","nodeId":"751aa540-f439-43bb-9ac1-3ce8ef54fa92","outcome":"completed","summary":"The uncertainty floor does nothing on V10. Every κ in the grid {0.1, 0.2, 0.3, 0.45, 0.6} gave results identical to V10 on every seed I ran, so the frozen strategy gains nothing over V10. I froze κ=0.3, and it beats STACK only by V10's own margin, far short of the +5.0 the top-10 target needs.\n\nI didn't run the brief's full protocol. The simulator ran at about 1.7 s per seed per strategy on this machine's 8 cores, so the full protocol would have taken about 3 hours against roughly 100 minutes left. I cut it down as follows (all recorded in `notes` in result.json):\n\n- **Screen:** 64 tuning seeds (400000..400063) instead of 128.\n- **Shortlist:** skipped. The screen was a tie at exactly zero, so the 384-seed stage couldn't separate anything.\n- **Confirm:** 400 seeds (5012000..5012399) instead of 2,000.\n- **Calibration:** I didn't run the CH check on seeds 0..999.\n\n**Results:**\n- **Hashes:** V10 and STACK both match the hashes in the brief.\n- **Why the floor never applies:** on seeds 400000..400007, V10's average √uncertainty is about 0.0016 (16 bp); STACK's is about 0.0064 (64 bp). So on V10 a floor of κ·√u tops out around 10 bp at κ=0.6, which is always below V10's normal fee. To get these numbers I ran a separate, diagnostic-only copy of each contract that writes √u into the lowest digits of the fee.\n- **Checks:** κ=0 matched V10 exactly on 16 seeds, and the κ=0.3 version passes `amm-match validate`.\n- **Confirm, frozen vs STACK (400 seeds):** mean difference **+0.106** (se 0.030), worst seed −2.32. Retail edge is −1.145 and arbitrage edge +1.252, both relative to STACK.\n- **Confirm, frozen vs V10:** exactly 0 on all 400 seeds.\n- **Gas:** no out-of-gas or other halts in any run. Highest afterSwap gas was 195,078 for frozen, 194,116 for V10 and 211,588 for STACK.\n\nI didn't test κ large enough for the floor to actually apply on V10 (roughly 2–3 or more). When a floor applied on STACK, per the brief, it lost 4.5 to 113.\n\nI wrote both output files and left them untracked: `artifacts/goal/batches/e03-v10-floor/items/a/result.json` and `sources.json`. The sources file lists the V10 artifact (hash quote checked against the downloaded copy) and the challenge's `config.py` (quote checked against the local checkout at the pinned commit). I left out the STACK artifact because my exact quote of its hash didn't match the downloaded text.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":613078,"cost":{"source":"runtime","usdMicros":659383},"inputTokens":34,"model":"claude-opus-5-5","outputTokens":12735,"runtime":"claude","turns":19,"wallClockMs":2570084}},{"artifacts":[],"attempt":1,"bundleHash":null,"device":"82c8ccdf08759061","findings":[],"hash":"8f8a03bf52c5e624e2c04f934c55a3ebce47142b337c78675ad0f3fbea823097","nodeId":"b8118b97-cf85-4986-9047-0aec9941505f","outcome":"failed","summary":"wrote outside the task's allowed paths: amm","treeHash":null,"usage":{"cachedInputTokens":1100569,"cost":{"source":"runtime","usdMicros":943743},"inputTokens":48,"model":"claude-opus-5-5","outputTokens":17040,"runtime":"claude","turns":28,"wallClockMs":3562405}},{"artifacts":[{"bytes":26360,"hash":"ce62fcd10f25585f1216c33f7aedad6ea4ebf8cbe7d9c5d7615499c039adfbeb","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-public-search/items/repos/result.json"},{"bytes":5270,"hash":"3da2af4f8b155855cf7f2cf719a62054850fa7a3c16b54bd58895ddb683ee352","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-public-search/items/repos/sources.json"}],"attempt":1,"bundleHash":null,"device":"9abb45864e8fdce1","findings":[],"hash":"919d19576adde9d9d06980b2d8eec8d022f547ed723ff69ac05fc22d9e7623e1","nodeId":"7f6cb89b-ade0-4786-a484-86f037cf8af8","outcome":"completed","summary":"Both deliverables are written and validated. Here is the outcome.\n\n**Measurement was blocked, research was completed.** This machine is aarch64 with no Python, Rust or linker. The setup script downloads an x86_64 uv binary and the x86_64-only amm_sim_rs wheel, and uv died with a Rosetta loader error. The release at gtmcknight/amm-sim has no aarch64 wheel. So no simulation, no `amm-match validate`, and no paired numbers (n = 0). This is recorded in the `blocked` field. As a weaker substitute, I compiled every candidate strategy and RS2 with forge under the challenge compiler's own settings (via-IR, optimizer 200, paris). All compiled. Two files (dipankar SigmaAdaptive, happybigmtn best_494) only compile with via-IR.\n\n**What the GitHub search found.** Thirteen repository-search queries were run through the GitHub API. Shell calls were rate-limited on the shared egress IP, so searches went through the fetch tool. Code search needs authentication and was unavailable. Seven non-fork repositories hold strategy code:\n\n- **jiayaoqijia/amm-challenge-yq**: the only file claiming an official board score (523.21). Eleven-slot state estimation: fee-corrected implied price into a sigma-gated pHat EMA, toxicity polynomial up to cubic, directional skew, asymmetric stale-price discount, trade-aligned boost, tail compression. Its own ablation says only the pHat gate survives noise.\n- **houseofjiao, 0xniki, ylintern**: constant retunes of the yq file, no scores claimed.\n- **lumen-dev-a11y**: yq plus a hard sigma regime switch on the base fee, the one structural variant.\n- **dipankar**: 33 contracts of spike-and-decay classifiers scoring 295 to 410 locally, plus a re-implementation of yq and a useful post-mortem.\n- **happybigmtn**: a different family (fee-boundary arb detector, inverted skew, toxic-side-only premium), self-scored 507.27. It also records the live number one on 2026-02-11 as josusanmartin v351 at 527.03, and telemetry that top entries average about 36 bps with 0.04 to 0.26 bps spread and lower arb volume.\n\n**Not found**: any repository holding code or rules from a top-10 entrant. The Algebra Finance Medium write-up mentioned by dipankar was not on GitHub.\n\n**Files written**:\n- `artifacts/goal/batches/e07-public-search/items/repos/result.json` (26 KB, parses)\n- `artifacts/goal/batches/e07-public-search/items/repos/sources.json` (20 sources, each quote verified byte-exact against the downloaded file)\n\nAll downloaded material and the challenge clone were moved under test/scratch. A leftover empty-ish `amm-challenge/.git` directory remains because the sandbox mounted it read-only and it cannot be deleted; the outer git status does not flag it.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":3062963,"cost":{"source":"runtime","usdMicros":6680619},"inputTokens":340928,"model":"claude-fable-5-1","outputTokens":90883,"runtime":"claude","turns":97,"wallClockMs":736649}},{"artifacts":[{"bytes":43127,"hash":"4dfa6ad04f0fe93cfe9ed098eaf62cca0fa33e039977f1517d782d97473981da","mediaType":"text/markdown","name":"report","path":"artifacts/goal/writeup/report.md"}],"attempt":1,"bundleHash":null,"device":"3f6a9bdd601cb99f","findings":[],"hash":"92cb6dc6135b608fd6993aae6a6739b456774726b24e6cbbfa5eaad9973a2f86","nodeId":"72cec7f2-68f1-42b4-9ca5-c3406f827bfa","outcome":"completed","summary":"Nothing further is needed. The report is written and verified, so this is the recap.\n\n**Deliverable written:** `artifacts/goal/writeup/report.md` (43,127 bytes, under the 120,000 limit). It is the only file created; everything else under `artifacts/` is the staged inputs.\n\n**What the report says**\n\n- **The goal was not met.** The best confirmed file is T, a toxicity run-anchor built on RS2. It gains +0.590 paired over STACK on 4,000 fresh seeds (se 0.014) and +0.271 over RS2 (se 0.013), with 0 OutOfGas and afterSwap peaking at 226,178 of 250,000. The top 10 needed about +5.0. T passes the requester's submission bar and is the file to submit.\n- **T's complete source is embedded**, and the Solidity block in the report re-hashes to the claimed SHA-256 `ebd9de9b…19b3`.\n- **Mechanism:** a 1/674 running mean of the toxicity signal in slot 16, with deviations shrunk to 71% for the linear fee term and amplified to 130% for the quadratic term. The gain is all on the arbitrage side (+0.95 per run vs STACK) at a retail cost (-0.36).\n- **Tercile split not delivered.** No handed result carries per-seed rows or retail volumes, so T's gain by retail-volume tercile is stated as missing, with the board-derived tercile fee gaps given instead and a diagnostic re-run on the spent blocks recommended.\n- **Ranked tables** cover every mechanism tried: 17 confirmed on fresh seeds, about 25 searched and never promoted, and the public-fork sweep (every public file lost to RS2 by 1.8 to 143 points; none used).\n- **Next run:** confirm K (arb-weighted skew, +0.509 held-out, unconfirmed because the finishing episode's batches were refused), measure T by tercile, and move the search into the validated fast replica with the RS2 port.\n\n**Pooled figures** were recomputed here from each block's n, mean and se, and T's cross-checked against the reported sum_d and sum_d2. The report cites every result file it rests on and notes the off-ledger seed blocks and the two incomplete union items.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1739385,"cost":{"source":"runtime","usdMicros":34095493},"inputTokens":46,"model":"claude-fable-5-1","outputTokens":25967,"runtime":"claude","turns":23,"wallClockMs":377430}},{"artifacts":[{"bytes":26504,"hash":"f6be9de4933d0cd9a95c03ebad937f3a1f643a0fdf937ab50b321651f0bbbf7f","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e03-v10-floor/items/b/result.json"},{"bytes":799,"hash":"a2a607c020a3fd4e013aefced42f65a0040bc3ab35baf91359cf81d8c1ffca5b","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e03-v10-floor/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"776c025db24644e8","findings":[],"hash":"93bd78e9639143b20d0e876ddff820fe691274eccf63077ecb913e02bb9f9e09","nodeId":"11826a11-02db-4c8e-bee0-3610df410be8","outcome":"completed","summary":"The uncertainty floor does nothing useful on V10, so this item gets us no closer to the top 10. The frozen strategy (KAPPA = 0.8) is +0.182 over STACK (se 0.040, n = 2000) on the confirm block 5014000..5015999. Almost all of that gain is V10's own: V10 alone is +0.182 over STACK on the same seeds, and frozen vs V10 is +0.00018 (se 0.00016), which is noise. The goal needs about +5.0.\n\n- **Setup:** all checks passed. Both artifact hashes match the brief. The CH check on seeds 0..999 gave exactly 525.5258821780834. KAPPA = 0 matched V10 exactly on 16 seeds, and `amm-match validate` passed on the frozen code.\n- **Scale check:** the mean sqrt(uncertainty) is 0.00159 for V10 and 0.00640 for STACK, about 4× apart. I read slot 13 by having an instrumented copy write it into the bottom six digits of the reported bid fee, which moves trading by less than 1e-12.\n- **Screen:** every KAPPA in the brief's grid (0.1 to 0.6) gave exactly 0 difference on all 128 seeds, because V10's uncertainty is too small for the floor to ever bind. That left nothing to shortlist, so I added values the brief didn't ask for: 0.7 is still 0, 0.8 is +0.0005, 0.9 is −0.005, 1.2 is −1.01, 1.8 is −35.4, 2.4 is −139 and 4.0 is −275. KAPPA 1.2 corresponds to STACK's best value of 0.3 after adjusting for the scale gap, and it loses. As on STACK, the floor hurts once it binds.\n- **Shortlist (next 384 seeds):** 0.8 gave +6e-5 (se 2.4e-4) and 0.6 gave +3.5e-5. I froze 0.8, but the two are not meaningfully different.\n- **Edge split, frozen vs STACK:** retail −1.113 (se 0.015), arb +1.295 (se 0.034). The two parts add back to the total within 3e-13.\n- **Gas:** no OOG, halts or errors in any arm. The highest gas in every arm is about 221k, in `afterInitialize`. The `afterSwap` peaks are 196,935 frozen, 196,048 V10 and 214,760 STACK, which matches the brief's 214k.\n\nThe frozen code's sha256 is `ebf9989a4a3d47e0473411213da63bc683598ffb1e855891e7ba2e8fec952e6e`. The 128-seed grid results in `result.json` are copied from the run's console output, because a later run on the same seeds overwrote that file. Neither output file shows up in `git status`, which suggests `artifacts/` is ignored, so they stay untracked as required. Some untracked dotfiles in the repo root (such as `.bashrc` and `.claude/`) were not created by me, and I left them alone.\n\nFiles are in `artifacts/goal/batches/e03-v10-floor/items/b/`:\n- result.json\n- sources.json","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1001790,"cost":{"source":"runtime","usdMicros":937138},"inputTokens":49,"model":"claude-opus-5-5","outputTokens":17929,"runtime":"claude","turns":27,"wallClockMs":1978385}},{"artifacts":[{"bytes":41236,"hash":"20fe417ea68752372a6d003da0de1e073ade94c6b1c56da59e73a9ee35117cdd","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-arb-surge/items/a/result.json"},{"bytes":985,"hash":"0b75ddce8de9e03fe97cb598cef0790111237887a7ea069145087bbf8d4fd057","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-arb-surge/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"9b2fda471b13b14a","findings":[],"hash":"95c2237dccfe18b6f06e1a7c9322ecd64def3af63c6b752974c9b1b8f82a727e","nodeId":"3748082f-ee3f-49b2-b071-b6ccecbec72d","outcome":"completed","summary":"Created and validated `result.json` and `sources.json` in the requested directory; both remain untracked.\n\nSurge lost **0.03721 edge versus RS2** on 512 held-out seeds (SE 0.01171). Zero halts; gas limits passed. Retain RS2.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":6220928,"inputTokens":88684,"model":null,"outputTokens":53424,"runtime":"codex","turns":55,"wallClockMs":4071269}},{"artifacts":[{"bytes":52513,"hash":"695053f20c9836ebd05f9df72805e4dac68de80f0135cf247916949e31b75914","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-vol-flow/items/b/result.json"},{"bytes":1943,"hash":"2d14a4298f796ebd73a464db153b7f22689443f3ec83a86a2c80ab51fc259867","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-vol-flow/items/b/sources.json"}],"attempt":2,"bundleHash":null,"device":"9967c7aa2bba256a","findings":[],"hash":"96b2faa67b89b5d126d632b8fe21bdc3aed51e29b7ee6a32471e343e943d1bd4","nodeId":"6bc9c6c1-42f3-4507-995a-0d567f8cc6b2","outcome":"completed","summary":"Completed: held-out loss **5.3504 ± 0.0674 SE** versus RS2 across 512 seeds. Zero halts; parity passed 32/32. Retain RS2.\n\n[Result JSON](/home/imd-worker/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/6bc9c6c1-42f3-4507-995a-0d567f8cc6b2/artifacts/goal/batches/e07-vol-flow/items/b/result.json) · [Verified sources](/home/imd-worker/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/6bc9c6c1-42f3-4507-995a-0d567f8cc6b2/artifacts/goal/batches/e07-vol-flow/items/b/sources.json)","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":15242240,"cost":{"source":"estimated","usdMicros":4307494},"inputTokens":207258,"model":"gpt-6.1-sol","outputTokens":84453,"runtime":"codex","turns":66,"wallClockMs":5946390}},{"artifacts":[{"bytes":28499,"hash":"f0c84ebe66608025bb038a242030d6639f81ec87bf35146ee4495f572c7b74e7","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e04-size-tail-design/items/b/result.json"},{"bytes":1910,"hash":"777918662f67d4b9b1fa58b1c5625123592f0ec8736f437643b4f3af04321d7e","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e04-size-tail-design/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"7a6aa89d32ea2c17","findings":[],"hash":"98a1053b727d8d8073e67c4dcfea399b977c656f1a36efa73a6a87e62846e6ab","nodeId":"3dac24fe-733b-4b34-b5bf-8b3f1f1a7761","outcome":"completed","summary":"I've written the design to `artifacts/goal/batches/e04-size-tail-design/items/b/result.json` (28.5 KB, under the 40 KB limit) and `sources.json` (9 quotes). Both files parse as JSON, and I checked each quote against the copy I downloaded. Everything in it is static calculation on made-up \"declared\" market states: there were no market simulations, no confirmation seeds were used, `paired.n` is 0 and `gas` is null. The V10 code's sha256 matches `cd9bdb45…`.\n\n**The mechanism:** a small correction added on top of V10's fees. For each side it computes the fee that maximises expected edge over the full lognormal size distribution through the exact clipped router. It subtracts the fee the same calculation gives at the mean size (20 Y), and adds κ times that difference, clamped to ±D bps.\n- V10's fee level, stale lean and 30/36 bps caps stay in place.\n- The competitor's spot is averaged over three points inside its 30 bps band. Its reserves follow from that spot alone, because its x·y product stays at 1e6.\n- An optional λ term charges the next step's expected arbitrage loss.\n\n**Static findings (made-up states, not gains):**\n- **Mean size understates expected edge.** Across 60 rows, the full-distribution value is 0.019 to 0.058 Y per order higher than the value at mean size. On the side where the competitor takes all small orders, the mean-size value is 0 at 45–60 bps, but orders above the cutoff size still reach us and are worth 0.041–0.058 Y.\n- **\"Fee × share at mean size\" misses most of it.** It ignores the price-impact gain on large orders: 0.008 vs 0.105 Y in one band-edge state.\n- **The optimal fee shape changes, and does not collapse to the share optimizer.** In all 18 averaged states the optimum differs from the share optimizer's: on the side where we take the small orders it is 62–72 bps versus 50.\n- **The sign on the other side depends on λ.** With λ=0 the optimum falls to about 2 bps; with λ=1 it rises to 62 bps.\n- **Size of the effect:** using the share-optimal fee instead loses 0.00004 to 0.0081 Y per order (single order, static).\n\n**Checks that pass:**\n- Equal reserves and fees give a 0.5 share.\n- At 10 vs 30 bps the share is 0.7508, which matches the rules table.\n- Share falls monotonically as our fee rises.\n- A single fixed order size reproduces the mean-size result exactly.\n- Arbitrage profit is zero inside the band.\n- The two band-edge states mirror each other exactly.\n\nThe closed-form approximation is within 0.0011 Y (4%) of the exact integral. Its first version had a sign error in the tail probability, which I found and fixed before producing these numbers.\n\n**Risks, written into the file:**\n- If λ needs to be high, the mechanism looks like the extra exposed-side protection that already failed.\n- V10's 30/36 bps caps would clip most of the correction.\n- The weights on the competitor-spot average are assumed, not fitted.\n- The gas cost (about 25k for both sides, about 8k for a lighter version) is an unmeasured estimate. I don't have V10's own peak gas.\n\nThe arbitrage rule comes from the rules artifact; I did not reopen `arbitrageur.rs` or `engine.rs` myself.\n\nThe file also has the equations and units, observable state and update order, five alternatives (V10 unchanged as a control; replacing V10's fees entirely as a reject control), Solidity pseudocode, the full Python prototype, a 55-minute plan for the next worker, parameter ranges, and six falsification/ablation tests. One of those tests rejects the design if its correction tracks the share optimizer too closely.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":831232,"cost":{"source":"runtime","usdMicros":1231806},"inputTokens":33,"model":"claude-opus-5-5","outputTokens":28015,"runtime":"claude","turns":20,"wallClockMs":350521}},{"artifacts":[{"bytes":43311,"hash":"c5d08058b4a023b61fe67d351a7d567903bc3337b8212f5ae13814c8cf2556f4","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-dual-anchor/items/a/result.json"},{"bytes":2005,"hash":"683098a5811b7f4b780c93cde3a75453594189a7ce3b94075a7ee58bef231c8c","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-dual-anchor/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"ad944e1953b3faa2","findings":[],"hash":"9dbfc1e78ccf01a6964ee898a1f58a5b155b5af3aca499baa7874884d8c88c7f","nodeId":"5b397a33-bdd1-495c-bb34-671a903b9ebc","outcome":"completed","summary":"Created and validated [result.json](artifacts/goal/batches/e08-dual-anchor/items/a/result.json) and [sources.json](artifacts/goal/batches/e08-dual-anchor/items/a/sources.json).\n\nHeld-out vs RS2: **−0.2716**, SE 0.0183, over 512 seeds. Zero halts; gas limits passed. Keep RS2.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":14514304,"inputTokens":101677,"model":null,"outputTokens":71917,"runtime":"codex","turns":63,"wallClockMs":4938062}},{"artifacts":[{"bytes":24881,"hash":"d6020b8844e1966c120dbda7356541ccdf1452171a9056531a134de868203ee1","mediaType":"application/json","name":"decisions","path":"artifacts/goal/episodes/005/decisions.json"}],"attempt":1,"bundleHash":null,"device":"98b4506bef931d13","findings":[],"hash":"9e77c19d2d4173c58aaf52db7be6576dfd6c27205ec53270a7aeaaf4d9d2ada2","nodeId":"d99ff54f-8109-4705-a94d-f0f703ce34e0","outcome":"completed","summary":"Those entries are character-device masks created by the sandbox, not files of mine, and the decisions file sits untracked under an excluded path as required. The task is complete.\n\n**Outcome.** I wrote `artifacts/goal/episodes/005/decisions.json` for episode 5 of the AMM fee-challenge goal. It is one JSON object in the skill's shape, with notes of 7,083 characters, four research batches of 12 items in total, 19 results to read next time, no cancellations, a wake on the four batches or after 90 minutes, and finish false. Every filled brief is between 2,720 and 2,997 characters, every placeholder has a var in every item, and all four batch names are new.\n\n**What the handed results showed.**\n- Retail-state copy b is the first mechanism that gains on both retail and arb. It measured +0.094 over V10 with standard error 0.016 on 512 held-out tuning seeds, zero out-of-gas halts. Its missing-flow slope parameter froze at its search bound, so the family is not exhausted. Its initialization gas is 243k, close to the 250k limit, which I flagged in the notes and capped in every new brief.\n- The cheaper-attracting-side idea on V10 is null in both copies, the residual table and the shadow objective are negative in both copies. All three are retired with their artifacts.\n- The four design reports (two-step continuation, size-tail pricing) are implementable, with falsifiers and worker plans, but carry no measurements.\n\n**What I spawned.**\n- Two independent confirmations of the exact retail-state file against V10 on fresh blocks 5100000 and 5102000, as the requester asked.\n- Four continued searches of that family on fresh tuning bands: two with widened bounds and a searchable correction cap, two with an extended nine-parameter variant.\n- Two ablation items that rebuild the file with one parameter changed at a time, to learn which component carries the gain.\n- Four implementation items that build and screen the two continuation designs and the two size-tail designs on V10, each with its own ablation and a parity check.\n\nSearches do not confirm inside the item this time, since earlier search items that tried to confirm ran out of time. The seed ledger and the promotion rules for episode 6 are in the notes.\n\n**Not done, and why.** Stacking retail-state b with copy a waits for copy a to land. No candidate meets the requester's submission bar yet, so no submission note was written.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":2879229,"cost":{"source":"runtime","usdMicros":9986956},"inputTokens":578,"model":"claude-fable-5-1","outputTokens":92716,"runtime":"claude","turns":33,"wallClockMs":1133794}},{"artifacts":[{"bytes":54273,"hash":"f7304d7633252c361d816df42b511b28de3efa6ddfa395b9dda728faa89a48db","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e02-search-regime/items/a/result.json"},{"bytes":817,"hash":"460eedeb778ff43ea45c3f7a5745ce78edceef78f433940bb167d56825e33bed","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e02-search-regime/items/a/sources.json"}],"attempt":2,"bundleHash":null,"device":"74a99f640688d37b","findings":[],"hash":"a3196a1622e611e41045e0d35f6e899082a87e178f09079e8093802aa15c5299","nodeId":"ea16199e-7f30-4430-b925-ace490d51ed4","outcome":"completed","summary":"The search found nothing better than STACK. The best per-regime candidate scores −0.576 below STACK (se 0.046) on the 512 held-out seeds, so this rule family doesn't help.\n\n**Checks before the search**\n- The previous attempt was rejected for cloning outside the allowed paths. This time the clone and all scratch work stayed in `test/scratch/`.\n- CH on seeds 0..999 gave mean edge 525.5258821780834, exactly the expected value.\n- STACK's sha256 matches.\n- With every multiplier at 1.0, my per-regime version of STACK gave exactly the same edges as STACK (max difference 0.0 on 64 seeds).\n\n**Search**\n- I wrote my own CMA-ES in numpy: 60 parameters, 12 candidates per generation, sigma0 0.12, RNG seed 1, starting at STACK.\n- Each generation was scored on a shared 64-seed batch, rotating through 300000..309743. It stopped at 30 minutes after 97 generations (1,152 evaluations).\n- The starting spread was too wide for 60 dimensions: the median candidate in the first generation lost 7.2. Sigma shrank to 0.054 and the median recovered to about −1.5, but never reached 0.\n\n**Final checks**\n- The best 3 candidates were re-run on 256 unused tuning seeds (309744..309999): −0.82, −0.78 and −0.63. The search's final average point scored −0.67. Their good scores during the search were luck of the 64-seed batches.\n- I kept the best of the three and ran it once on held-out seeds 310000..310511: −0.576 (se 0.046). The worst seed was −16.7.\n- Compared with STACK, it took in more retail volume (+709 Y) and more arbitrage volume (+605 Y), and lost edge overall.\n- Gas: afterSwap peaked at 212,641, against STACK's 211,519 on the same seeds; there were no OOG halts anywhere. It passes `amm-match validate`.\n\n**Things to know**\n- **Retail and arb edge deltas are null.** The prebuilt simulator only reports total edge per strategy, so I couldn't split it. The volume differences above stand in for them.\n- **Regime assignment:** each quote's regime is set by the trade it is computed after, as the brief describes.\n- **Inert parameters:** 4 of the 60 do nothing. The 30 bps cap only applies on first prints and the 16 bps cap only on later prints.\n- **Trimmed log:** to stay under 64,000 bytes, the log keeps one entry per generation (its best candidate), and every second entry has its parameters removed.\n- **Next try:** a smaller sigma0 (about 0.02) or fewer parameters would be needed to tell whether any per-regime split gains at all.\n\nNo seed at or above 5,000,000 was used, no seeds were dropped, and no board result is claimed.\n\nFiles are in `artifacts/goal/batches/e02-search-regime/items/a/`:\n- `result.json` (54 KB)\n- `sources.json` (4 sources, each quote checked against the downloaded files)","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1671165,"cost":{"source":"runtime","usdMicros":1408571},"inputTokens":65,"model":"claude-opus-5-5","outputTokens":28304,"runtime":"claude","turns":39,"wallClockMs":3629815}},{"artifacts":[{"bytes":55283,"hash":"9045cab1f8a51e8f1c6a4c2c93daa2b2f0d9bd274a68de064a1167c079c2a8b4","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-run-anchor/items/sigma-b/result.json"},{"bytes":940,"hash":"23b0cad5c25340efa767d271854eaee609c8cc0381344d3e033add993189f507","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-run-anchor/items/sigma-b/sources.json"}],"attempt":1,"bundleHash":null,"device":"943650541094145e","findings":[],"hash":"a41ebcbee7121017bc0421864843d14bd3fd604cb5e4ac653b720d034f0f714c","nodeId":"31779307-2989-4818-9c84-3997c3957537","outcome":"completed","summary":"Created [result.json](artifacts/goal/batches/e07-run-anchor/items/sigma-b/result.json) and [sources.json](artifacts/goal/batches/e07-run-anchor/items/sigma-b/sources.json).\n\nHeld-out gain versus RS2: **+0.1632**, SE **0.0251**, over 512 seeds. Zero halts; gas limits passed. Overlay-off parity matched all 32 seeds. JSON, source hash and regeneration checks passed.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":5535744,"inputTokens":127065,"model":null,"outputTokens":28116,"runtime":"codex","turns":44,"wallClockMs":2487155}},{"artifacts":[{"bytes":265,"hash":"985ffa16e435634d0d974deb746c9cdc13b0a6d0a676d48b798bcb745eb591b0","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-run-anchor/items/sigma-a/result.json"},{"bytes":15,"hash":"bee7a88039d6c7375b5ec2d8eb062c1766a9113ff51c2a15c5290d27e4d8841d","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-run-anchor/items/sigma-a/sources.json"}],"attempt":1,"bundleHash":null,"device":"8ec0eeb0fd2a5504","findings":[],"hash":"a5a964ae1b0135f60b79d9c4cae76666e32a1624854d267091844097b93ba3d8","nodeId":"ead44713-c595-4699-bc54-e070d35a5785","outcome":"completed","summary":"Setup was blocked before the search could start: cloning the pinned repository failed twice with `Recv failure: Connection reset by peer`, and the archive request failed the same way. I recorded the failure with `n: 0` in [result.json](/home/imd2/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/ead44713-c595-4699-bc54-e070d35a5785/artifacts/goal/batches/e07-run-anchor/items/sigma-a/result.json). [sources.json](/home/imd2/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/ead44713-c595-4699-bc54-e070d35a5785/artifacts/goal/batches/e07-run-anchor/items/sigma-a/sources.json) contains an empty source list. Both files parse as JSON.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":144000,"cost":{"source":"estimated","usdMicros":3394},"inputTokens":9172,"model":"gpt-6-luna","outputTokens":2073,"runtime":"codex","turns":4,"wallClockMs":71031}},{"artifacts":[{"bytes":1165,"hash":"3c357ba732c05aa84fbd7a6db3835cd49dc0680dd9fe55e556adf26272e3db10","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-vanilla-quote/items/a/result.json"},{"bytes":20,"hash":"6c3b9f0390341dfd18635526c002291b374ba88078d4f87034c71c820e21474e","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-vanilla-quote/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"9eee291846dcb046","findings":[],"hash":"a80f1acee4126275de395152e91fc8ad50df9b628d0e093617ac335471500436","nodeId":"7dca1dd1-df77-4a0c-88b4-f9037fd7bbd4","outcome":"completed","summary":"Created and validated `result.json` and `sources.json` in the required directory.\n\nBlocked by setup failure: `uv: Exec format error` (exit 126). Per the brief, stopped without running strategy tests; all unmeasured results are marked null.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":80000,"cost":{"source":"estimated","usdMicros":65588},"inputTokens":16834,"model":"gpt-6.1-sol","outputTokens":1592,"runtime":"codex","turns":3,"wallClockMs":43823}},{"artifacts":[],"attempt":2,"bundleHash":null,"device":"a13784fa5cb209c3","findings":[],"hash":"acdf7dfb9937eacdec07882049228294a7e7afaea5a089378fd68412a3b58d62","nodeId":"03577525-e700-4e21-92a5-e2467ab310e2","outcome":"failed","summary":"wrote outside the task's allowed paths: scratch/0zKillua-candidates.json","treeHash":null,"usage":{"cachedInputTokens":4386304,"cost":{"source":"estimated","usdMicros":84388},"inputTokens":252052,"model":"gpt-6-luna","outputTokens":30639,"runtime":"codex","turns":9,"wallClockMs":1447133}},{"artifacts":[{"bytes":46932,"hash":"da78ef2645aa92840846dd587a92c97687ca9c1f555265d59f4c6d7a18d2ae08","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e09-confirm-sigma/items/b/result.json"},{"bytes":1317,"hash":"5c3129e409e80ea356d86a5898a0a84c226f1e504e6f6a4eacca6fad60689a9b","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e09-confirm-sigma/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"a6d6df9f16a14651","findings":[],"hash":"ad98c5fecf110cbf76a8e59c06625eb659509b04756fa59de1d2603bce563ea6","nodeId":"2bccdc22-b8d8-4fe4-81da-38b677100e59","outcome":"completed","summary":"Confirmed all 2,000 seeds:\n\n- RS2: **+0.11430**, SE **0.01260**\n- STACK: **+0.43266**, SE **0.01602**\n- Zero OOG or other halts.\n\nWrote and validated `result.json` and `sources.json` in the requested directory. Calibration, hashes, statistics, source quotes, and size checks passed.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":3321088,"cost":{"source":"estimated","usdMicros":5211548},"inputTokens":98836,"model":"gpt-6-astra","outputTokens":18042,"runtime":"codex","turns":43,"wallClockMs":2438418}},{"artifacts":[{"bytes":60009,"hash":"7f9ed7a5a2c028166b5bc33525b24b1deeb3e4e1bc75e53eae3f9f8f461cc9c2","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-fork-mine/items/f7/result.json"},{"bytes":1250,"hash":"1c4a4908b5e839aaac1f478e2836d2ef70aeaa9357dd7ca2bdf16949477cbf61","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-fork-mine/items/f7/sources.json"}],"attempt":1,"bundleHash":null,"device":"9812c5faf226f7c7","findings":[],"hash":"ae3070ed0e30ce7ec99a61f9aedc7b72225feaac70782c336faada28c2369017","nodeId":"9d184d34-a054-4136-85ea-15e61854cfce","outcome":"completed","summary":"None of the four forks has a fee rule that beats RS2. The closest is ChengHua926's `contracts/src/Strategy.sol` (\"no_cubic\", the CH calibration file), at **−1.84 ± 0.07** on 256 paired seeds (901000..901255). Almost all of that gap is arb edge (−1.83). It has the same constants and fee terms as RS2: RS2 contains everything in it plus a fair-price estimate that also learns from steps with no trade and from routing to the other pool. So it adds nothing RS2 doesn't already have.\n\n| Fork | Branches | Distinct afterSwap files | Result |\n|---|---|---|---|\n| 0zKillua/amm-challenge | 1 | 143 | Kept 50: 49 valid, 1 failed to compile (\"stack too deep\", V30C). Best V75 at −38.6 (−23.0 retail, −15.6 arb); V73 −38.7 |\n| acemasterjb/amm-challenge | 2 | 0 | Nothing to score; its only extra commit is configuration files |\n| d2p-finance/d2p-fee-strategies | 7 | 1 (`EntryPoint.sol`, main) | −189.5 on the 32 seeds |\n| ChengHua926/amm-challenge | 1 | 18 | `Strategy.sol` −1.95 on 32 seeds; the 17 `dyn_v*` scratch files −140 to −388 |\n\n- **Setup check:** CH on seeds 0..999 gives 525.5258821780834, exactly the expected value.\n- **Gas:** no file ran out of gas or reverted. The top-3 afterSwap peaks were 151,576 for CH and about 92k for V75 and V73; RS2 peaked at 197,184.\n- **Fresh seeds:** since nothing beats RS2, there was nothing to confirm, and no seed at or above 5,000,000 was used.\n- **The 50-file cap:** all 143 0zKillua files come from one commit (\"V73 better so far\"), so \"50 most recently committed\" can't separate them. I kept the highest version numbers (V75 down to V30F) as a stand-in for recency. The other 93, the earlier versions and the named strategies, were not scored and appear in `files[]` with null values.\n- **What the forks try that RS2 doesn't:** 0zKillua's files use a reference price pushed along by each trade's signed size, fees that rise on the side just traded, and a buy/sell volume-imbalance skew. All of them lose 38 or more.\n- **Licence:** none of the four repos has a LICENSE file. The source files carry an MIT SPDX header.\n\n`result.json` is 60,009 bytes and parses. `code` holds the full CH source with its sha256, raw URL, author and licence. All 6 quotes in `sources.json` were checked against their live URLs.\n\nFiles are in `artifacts/goal/batches/e07-fork-mine/items/f7/`:\n- result.json\n- sources.json","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":962512,"cost":{"source":"runtime","usdMicros":1100946},"inputTokens":43,"model":"claude-opus-5-5","outputTokens":20218,"runtime":"claude","turns":26,"wallClockMs":673600}},{"artifacts":[{"bytes":61524,"hash":"19f2ec857df536e8ab62ab1da89ec6623332521ce46849f15bccff402c63e1e5","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e05-rs-search/items/a/result.json"},{"bytes":1263,"hash":"9924f09718cb82860cf1608b2721ff8ad5f1f123e988ee5ebee7a7e8c2fbcc06","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e05-rs-search/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"782f24113d209be2","findings":[],"hash":"ae3f25deefdf303041fdc13a8f2613b90a8b598aaf428e64e5adb59047d22614","nodeId":"cfd68b03-392a-40e0-89ef-1d66ddb2d9ab","outcome":"completed","summary":"The search finished, but the gain it found is small: about +0.16 over V10, nowhere near the ~+5 over STACK that a top-10 place needs. Both output files are written. `result.json` is 61,524 bytes, under the 64,000 limit, and parses; the sha256 of its `code` matches the one it reports.\n\n**Checks before the search**\n- The CH reference strategy on seeds 0..999 gives a mean edge of exactly 525.5258821780834, as expected.\n- Rebuilding RS1 gives sha256 `df2817ba…f07577`, which matches.\n- RS1 with mix set to 0 gives exactly the same edges as V10 on the parity seeds 706000..706031 (largest difference 0.0).\n\n**Search**\n- CMA-ES with numpy seed 11 and 10 candidates per generation, over RS1's six parameters with the widened bounds plus the correction cap (1.5x to 6x), starting from RS1.\n- It ran 16 generations, 161 evaluations in all. Each generation used a fresh 64-seed block between 700000 and 701023, scored against V10 on the same seeds.\n- It ran 1238 s of measured wall time, slightly over the 20 minutes because it only checks the clock between generations.\n- No out-of-gas calls and no other halts anywhere.\n- The best points pushed against the edges of the search range: retention at its maximum of 0.999, rate_scale near its minimum of 0.3, and the cap at its minimum of 1.5x. Wider bounds might find more. Every structure-0 candidate (20 of them) did worse than structure 2.\n\n**Re-check on seeds 704000..704255, vs V10**\n\n| Search rank | Re-check gain | se |\n|---|---|---|\n| 1 | +0.178 | 0.031 |\n| 2 | +0.157 | 0.030 |\n| 3 | +0.199 | 0.035 |\n\nI froze #3, the best on re-check, before running anything on the held-out seeds. Its parameters are `[2, 0.3424, 0.999, 0.3664, 1.8833, 196.03, 1.5]` and its sha256 is `f24b6ca198b744c380842c3a17964a6dc21f311bb04984b26733afa3fee8eaf2`. It passes `amm-match validate`.\n\n**Held-out (seeds 705000..705511, 512 seeds, one run per strategy)**\n\n| Comparison | Mean gain | se |\n|---|---|---|\n| Frozen vs V10 | +0.162 | 0.026 |\n| Frozen vs RS1 | +0.081 | 0.021 |\n| RS1 vs V10 | +0.081 | 0.020 |\n\n- Against V10, the frozen strategy earns +1.49 more from retail trades but gives up 1.33 more to arbitrage. In effect it is charging higher fees.\n- Gas: afterSwap peaks at 202,468 and initialisation at 243,099, both under the 235k and 245k limits, with no out-of-gas calls.\n\nNo seed at or above 5,000,000 was used, and the result makes no leaderboard claim.\n\n`sources.json` lists 6 sources. I checked each quote against the text I downloaded from its URL.\n\n`git status` shows some untracked dotfiles and `.claude/*` entries in the repository root that I did not create. I left them alone.\n\nFiles are in `artifacts/goal/batches/e05-rs-search/items/a/`:\n- result.json\n- sources.json","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1259335,"cost":{"source":"runtime","usdMicros":1196372},"inputTokens":49,"model":"claude-opus-5-5","outputTokens":21750,"runtime":"claude","turns":32,"wallClockMs":1821370}},{"artifacts":[{"bytes":51719,"hash":"5900a0b71c6d97205b27277e192e587aeeced0fc6002a50bafc88fe292e8c6da","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e04-band-transport/items/a/result.json"},{"bytes":589,"hash":"0786b794d815178a723c4b95b4c1824310730ba160e1cee539b36ce02c3229ac","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e04-band-transport/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"7f55bf7fc2c64720","findings":[],"hash":"b159718ca57dde52029ca631ded88d5c95f4df09162464988a8d86aab71331a3","nodeId":"7ce5b505-d74e-41f0-bfba-06bb150ea932","outcome":"completed","summary":"I finished the search but no structure beat V10. The frozen candidate loses **−0.187 ± 0.051** (n=512) on the one-time held-out block, and the search itself was cut short.\n\n**What I built:** a generator that adds one step to the end of V10's fee logic. It tracks how far retail has moved the spot price since the step opened. Later trades in a step count fully; the first trade counts only by the probability that it was retail, which V10 already computes. That figure then moves both band endpoints, L = spot·(1−bid) and U = spot/(1−ask), and the moved endpoints are converted back to fees. With every parameter at zero the output equals V10 exactly: the edge difference was 0.0 on seeds 680000..680019. Packing the new state into two storage slots kept the extra gas small (afterSwap peak about 207k, under the 235k target).\n\n**Search:** three structures — translation (2 parameters), width (2), and coupled feedback carried across steps (4). I used CMA-ES with seed 405, 6 candidates per round, on a new 32-seed block each round.\n- **First round (scale 0.25):** every candidate lost between 1.8 and 63. Losses grew roughly with the square of the step size.\n- **Restart (scale 0.03), two rounds:** the best results were +0.22 (se 0.09) and +0.10, both from the width structure and both within noise. The next round had no positive candidate.\n- **Stopped early:** after about 15 minutes and 54 candidates, to stay inside the 55-minute window. The result file reports the search as incomplete.\n\n**Recheck and held-out:**\n\n| Run | Seeds | Mean paired gain vs V10 | se |\n|---|---|---|---|\n| Recheck, candidate A | 684000..684255 | −0.174 | 0.101 |\n| Recheck, candidate B | 684000..684255 | −0.304 | 0.104 |\n| Held-out, A (frozen) | 685000..685511 | −0.187 | 0.051 |\n\n- **Frozen hash (A):** `51b8a9260dcda83a26014c6c028919cccc7ce9dcad9a15079882d0f0dbb3817e`. The rule narrows both endpoints toward the spot by 2.6% of the displacement and pushes the side the price is moving toward out by 0.45%.\n- **Where the loss comes from:** on held-out, A gains +1.10 from retail but loses 1.28 to arbitrage. The two parts add up to the total to within 1e-13.\n- **Gas:** afterSwap peaks at 202,854 against V10's 194,561. There were zero out-of-gas halts or other halts in any run, and no seeds were dropped.\n- **Validation:** `amm-match validate` accepts the frozen Solidity.\n\n**Not done:**\n- I didn't re-run the CH calibration, because the brief says it was already verified. The zero-parameter identity check stands in for a harness check.\n- I didn't compare against STACK or use any seed ≥5,000,000.\n- I make no board claim.\n\nFiles are in `artifacts/goal/batches/e04-band-transport/items/a/`:\n- `result.json` (51.7 KB, checked that it parses)\n- `sources.json` (three quotes: the V10 code hash from its artifact page, and two lines from the pinned `AMMStrategyBase.sol`)\n\nThe untracked dotfiles in the repository root (`.bashrc`, `.claude/` and others) are empty mount points the sandbox creates. I didn't write them and left them as they are.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":977131,"inputTokens":37,"model":"claude-opus-5-5","outputTokens":27827,"runtime":"claude","turns":24,"wallClockMs":1883923}},{"artifacts":[{"bytes":43464,"hash":"ee6bdd14dbca455d71e6ff33e43e96b4c481782e76c1a140459c24bc086236c3","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-run-anchor/items/tox-b/result.json"},{"bytes":759,"hash":"5a11dd828446deb3613b643557cf637288ba9c2c5b769a5afb840f7db7280004","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-run-anchor/items/tox-b/sources.json"}],"attempt":1,"bundleHash":null,"device":"a11a254856120206","findings":[],"hash":"b1ec327d883567a2deb9050eb9eb257c6f15b799aa55700bfcd923f039553650","nodeId":"1b98750f-012f-4a8d-af15-10ac60a574b2","outcome":"completed","summary":"Created `result.json` and `sources.json`; validation passed.\n\nHeld-out gain: **+0.227 points vs RS2** (SE 0.029, 512 seeds). Zero OOG calls, gas limits passed, and all 32 parity seeds matched exactly.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":7512192,"inputTokens":66712,"model":null,"outputTokens":35118,"runtime":"codex","turns":52,"wallClockMs":3262060}},{"artifacts":[{"bytes":45130,"hash":"d7c0d000c3424a6e8fa53a4d6b93e96ced19a470cde228c5fd0c36111d60849d","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e02-board-fit/items/fit-b/result.json"},{"bytes":3044,"hash":"786e5bfb72af867ddc31056ab8f414809a66554bd3e477f6722eb19b5f148e8c","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e02-board-fit/items/fit-b/sources.json"}],"attempt":1,"bundleHash":null,"device":"729f8e34b40e405d","findings":[],"hash":"b1ff6d1f9ae9453c6ef67514796d10c1c75f91f56718183b7a8e290bf74324b8","nodeId":"e1972dab-884f-4868-9a46-1ba6a3c70c38","outcome":"completed","summary":"Created both required files:\n\n- [result.json](artifacts/goal/batches/e02-board-fit/items/fit-b/result.json): fits, rankings, gap regressions, terciles, and testable hypotheses; 45,130 bytes.\n- [sources.json](artifacts/goal/batches/e02-board-fit/items/fit-b/sources.json): nine source quotes, re-fetched and verified.\n\nValidated all 64 fee fits across eight entries. Separate retail and arbitrage edge deltas were unavailable in the API and are explicitly marked missing.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":323200,"inputTokens":35423,"model":null,"outputTokens":7288,"runtime":"codex","turns":4,"wallClockMs":206171}},{"artifacts":[{"bytes":36949,"hash":"e3f159b9b1b2458001869784af1b18ea2ed13f1e46ee08249a5d3055c766a811","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e04-continuation-design/items/b/result.json"},{"bytes":3149,"hash":"3a5b75e5323bc8fb6ecef84aedbae633de706fea783686f7601fce983b38168d","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e04-continuation-design/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"810692103659803b","findings":[],"hash":"b5b7fb3beda1552f53477f7c4ff4cdb7b2b4b125e0778c813461a00b62cc06cc","nodeId":"c2d753da-0ef0-46c6-bd67-154b42dec1b6","outcome":"completed","summary":"Created `result.json` and `sources.json` in the assigned directory.\n\nValidated: 36,949-byte result, reproducible static checks, and 14 matching source quotes. No market simulations; `paired.n=0`, `gas=null`.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1875072,"inputTokens":63235,"model":null,"outputTokens":42397,"runtime":"codex","turns":6,"wallClockMs":1066779}},{"artifacts":[{"bytes":47021,"hash":"c037da20170ae3dae7da3506e1979be52c4f0fca9da6af43e0e038a2be67e427","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-fork-mine/items/h4/result.json"},{"bytes":3173,"hash":"d7e4f96dcefa89b756ce34c43564a6963add84ff2f46a7f2a5a8cf51574c660a","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-fork-mine/items/h4/sources.json"}],"attempt":3,"bundleHash":null,"device":"aa417d85641c229d","findings":[],"hash":"b7dd9a5c21c2dfaa5de03c6eff98812f136bf417413e811546c013b0f73baa33","nodeId":"03577525-e700-4e21-92a5-e2467ab310e2","outcome":"completed","summary":"Created `result.json` and `sources.json` in the requested directory.\n\nScreened 98 files; none beat RS2. Best confirmation: **−1.8404 edge**, SE 0.0698, across 256 seeds, with zero OOG calls.\n\nJSON, size, hashes, source quotes, and path checks passed.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":8023168,"inputTokens":98624,"model":null,"outputTokens":36751,"runtime":"codex","turns":27,"wallClockMs":1977817}},{"artifacts":[{"bytes":32716,"hash":"afff2920028660f2f32987bd0227fc383bacabf254f11060f029bac40bc15268","mediaType":"application/json","name":"decisions","path":"artifacts/goal/episodes/009/decisions.json"}],"attempt":1,"bundleHash":null,"device":"35c52a5b502e847c","findings":[],"hash":"b9feaebff73b4220cb1096d11812a030902eba9b121e012128bb16a54119b714","nodeId":"7a73ca04-1448-4941-869d-0f0c67f6ae7c","outcome":"completed","summary":"Created and validated [decisions.json](/home/identitymd5/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/7a73ca04-1448-4941-869d-0f0c67f6ae7c/artifacts/goal/episodes/009/decisions.json): 6 batches, 13 items, and 30 result reads.\n\nLeft untracked. No other files changed.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1894912,"cost":{"source":"estimated","usdMicros":4475352},"inputTokens":127649,"model":"gpt-6-astra","outputTokens":26079,"runtime":"codex","turns":5,"wallClockMs":861047}},{"artifacts":[{"bytes":28513,"hash":"bd9ae019f2067d14f0e8619d8503d1e159e88df2ef824ed254e3b786bc83d290","mediaType":"application/json","name":"decisions","path":"artifacts/goal/episodes/004/decisions.json"}],"attempt":1,"bundleHash":null,"device":"35c52a5b502e847c","findings":[],"hash":"ba91e97976dc2f507dc989509d5e8cf225bca05217d5bfadeecd84a6fc269c1d","nodeId":"150b2153-98c7-41d8-a98f-3f9f1cb49821","outcome":"completed","summary":"Created and checked [decisions.json](/home/identitymd5/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/150b2153-98c7-41d8-a98f-3f9f1cb49821/artifacts/goal/episodes/004/decisions.json): five batches, ten items, using V10 as baseline.\n\nJSON shape, brief lengths, and seed ranges pass checks. File left untracked; no other files changed.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1260544,"cost":{"source":"estimated","usdMicros":3181444},"inputTokens":88980,"model":"gpt-6-astra","outputTokens":20622,"runtime":"codex","turns":5,"wallClockMs":676539}},{"artifacts":[{"bytes":63295,"hash":"60b3b6403f6e0a05a810c3847a6ad28b7ad4a2adf8b4462f4dc1280ed7902af2","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-fork-mine/items/h1/result.json"},{"bytes":2986,"hash":"436c1f4b3465e710382002ea45df920260f02ca5451eaf6eee5166739a3aac0a","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-fork-mine/items/h1/sources.json"}],"attempt":1,"bundleHash":null,"device":"985b73231a8fa1f8","findings":[],"hash":"bad003a4afbf116518fe3afaa79f326abf29c5c01b0adaf9b7ff4715ef24f1a2","nodeId":"4a0459ad-c19d-4464-9dc5-6625c0885856","outcome":"completed","summary":"Created and checked both JSON outputs: 160 candidates tested; 73 invalidated by out-of-gas calls.\n\nNo improvement found. Best valid candidate trailed RS2 by **65.797 ± 0.623 SE** over 256 seeds, with zero OOG calls. All 13 source quotes verified.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":5301888,"inputTokens":71280,"model":null,"outputTokens":23063,"runtime":"codex","turns":32,"wallClockMs":2038080}},{"artifacts":[{"bytes":51356,"hash":"00f46f734ceb30bb02e5dcc8359c3647b73b5fcc66a0fcde3b37002af60770eb","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e02-search-share/items/b/result.json"},{"bytes":726,"hash":"be998e7f2e98e034cd1cc37eb77659f44ceb1a2e135ec0305355b369167cb78c","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e02-search-share/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"733f63ff9321d57a","findings":[],"hash":"bde84e4ffdc55d9060ee5f5f23b208ce17639b4c2e91b772b79ce46f6e798113","nodeId":"05d82f7c-e048-4970-b6dd-5cb454060c55","outcome":"completed","summary":"SHARE doesn't beat STACK. The search kept moving back to STACK's own fee, and the best rule it found scores the same as STACK on the 512 held-out seeds, so this item adds nothing toward the +5.0 the goal needs.\n\n**Setup checks**\n- CH on seeds 0..999 gives a mean edge of 525.5258821780834, exactly the brief's figure.\n- STACK's sha256 matches.\n- With w=1 and no clamp, the SHARE contract reproduces STACK exactly on 64 seeds (largest per-seed difference 0.0).\n\n**Search**\n- I wrote my own CMA-ES with population 10 and random seed 2, over the 8 parameters. Each evaluation was the mean paired diff vs STACK on seeds 120000..120063.\n- I stopped at 1125 s (60 generations, 600 evaluations) rather than the full 30 minutes. By then it had settled on WF=WL=1, which means the STACK fee is used unchanged.\n- Results get worse as more weight goes to the revenue-optimal fee. Average paired diff by the smaller of the two weights:\n\n| Weight on STACK fee | Mean paired diff |\n|---|---|\n| below 0.7 | −5.41 |\n| 0.7–0.85 | −1.04 |\n| 0.85–0.95 | −0.28 |\n| 0.95 and up | about −0.07 |\n\n**Final candidate**\n- The best 3 re-checked on 256 unseen seeds (121000..121255) at between +0.001 and +0.004, each ± about 0.005.\n- The frozen best has weight 1, so the only thing it changes is a 32.29 bps cap on the attracting-side fee.\n- Held-out seeds 130000..130511, used once:\n  - paired mean diff −0.0021 ± 0.0033 (n=512); the worst seed is 130035 at −0.77.\n  - retail edge delta +0.0017 ± 0.0031; arb edge delta −0.0038 ± 0.0012.\n- Gas: 0 out-of-gas halts in 5,291,101 afterSwap calls. The afterSwap peak is 214,228, the same level as STACK.\n- `amm-match validate` passes.\n\n**Choices the brief left open**\n- **Arb-risk sign:** I read \"minus arb risk\" as a signed term subtracted from the revenue-optimal fee, so the search could also make it add to the fee.\n- **probArb:** STACK only computes its arbitrage probability on the first trade of each step. Later trades use 0 for both it and the silence count.\n- **Revenue-optimal fee:** a fitted closed form, 0.0015 + t − 1.2t² with t = c1·sizeHat capped at 0.04. Against an exact numerical solution of the brief's share formula, the error is under 0.04 bps for t ≤ 0.016.\n- **Retail/arb split:** the simulator only reports total edge, so I rebuilt the arb part step by step from the recorded prices and fees, using the arbitrageur's own formulas. Retail is total minus arb.\n\nThe result log holds 200 of the 600 evaluations (the 60 best plus 140 evenly spaced), the cap the brief sets. A summary of all 600 is included. No seed at or above 5,000,000 was used.\n\nThe sources file cites three files from the challenge repo at the pinned commit (the router, the simulation engine and the AMM). Both JSON files parse; the result is 51,356 bytes.\n\nThe repository root has untracked dotfiles (`.bashrc`, `.gitmodules`, `.claude/` and others) that I did not create, and I left them alone.\n\nFiles are in `artifacts/goal/batches/e02-search-share/items/b/`:\n- result.json\n- sources.json","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1530332,"cost":{"source":"runtime","usdMicros":1414599},"inputTokens":53,"model":"claude-opus-5-5","outputTokens":26870,"runtime":"claude","turns":32,"wallClockMs":1505006}},{"artifacts":[{"bytes":15229,"hash":"dcfeb5f5837ef2707b3949b09bd866f8dd1f8cf5e3c2ec71e86488d66d709e7b","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e01-mechanism-designs/items/policy-distillation/result.json"},{"bytes":3403,"hash":"48023001fa9840fbd18b79571bd399163b4135997e98eaa3621dcdd2f9b264a5","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e01-mechanism-designs/items/policy-distillation/sources.json"}],"attempt":1,"bundleHash":null,"device":"7244e856c10de20a","findings":[],"hash":"be8750361f7bb4d8d084a1e572cd6e1b8739b9ae1acbef19ecfd7a2078043f2a","nodeId":"aa71a8d2-ca5a-4672-8273-90df54bbbe43","outcome":"completed","summary":"I've written the mechanism design report and its sources file. Both parse as JSON, and `result.json` is 15,229 bytes, under the 24,000-byte limit. This is source analysis only: I installed no simulator, ran no seeds and make no performance claim. I didn't check that each quote can be found again at its URL.\n\n**Sources read:** the amm-challenge repository at commit `6b6921f8` and STACK's code. STACK's sha256 matched `2eaafc79…5719`.\n\n**The proposed design (\"RES-TABLE\"):**\n- **What it adds:** STACK's existing price and volatility estimators stay as they are. A small lookup table adds a correction to the bid and ask fees just before STACK's final caps. The table has 42 cells, chosen by:\n  - the size and sign of the gap between the pool price and STACK's price estimate, measured in volatility units;\n  - whether this is the first trade in the step;\n  - how many steps have passed since the last callback.\n- **Fallback:** an all-zero table reproduces STACK exactly, so it is both the fallback and the baseline to test against. STACK's 30/36 bps caps stay in place after the correction.\n- **Training:** the table values are found by black-box search (CMA-ES) where each candidate is scored on full simulator runs, as paired edge over STACK on the same seeds. Nothing is fitted to hidden simulator labels such as fair price or trade type, and nothing is fitted to copy STACK's outputs.\n- **Leakage and imitation checks:**\n  - The deployed contract can only see the trade data each callback passes in, plus its own 32 storage slots.\n  - The Python feature code must match the Solidity features exactly before any search starts.\n  - A shuffled-table control tests whether a gain is really state-dependent or just a level shift.\n  - A correlation check flags a table that is only rescaling STACK's own terms.\n- **Gas:** storing the table as compile-time constants should add under 1k gas to STACK's 214k peak. That is an estimate; every final candidate still has to show zero out-of-gas calls in `gas_stats()`.\n\n**Also in the report:**\n- Four other structures to search: a gated mix of STACK and a wider fee, a fee that accounts for how long it will persist, a fee aimed at winning routed retail flow, and a small decision tree distilled from the searched policy.\n- Expected effects on retail and arbitrage edge for each, all stated as hypotheses that need testing.\n- Tests that would disprove the idea, and a five-arm comparison against STACK.\n- Solidity-style pseudocode and a specific brief for the next item to implement and search it.\n\nFiles are in `artifacts/goal/batches/e01-mechanism-designs/items/policy-distillation/`:\n- `result.json`\n- `sources.json` (16 quotes)","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":211605,"cost":{"source":"runtime","usdMicros":536229},"inputTokens":16,"model":"claude-opus-5-5","outputTokens":9607,"runtime":"claude","turns":9,"wallClockMs":132042}},{"artifacts":[{"bytes":29819,"hash":"7fed754f8d479e7d24f9b283f6a7ca8f5351a26f202be16bfc9cb14490aa0590","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-fork-mine/items/h3/result.json"},{"bytes":186,"hash":"09403d9d444228e1f356582467284acc5279c0bae52ecffba809f6bcd106d00f","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-fork-mine/items/h3/sources.json"}],"attempt":1,"bundleHash":null,"device":"98edfcef96a2f998","findings":[],"hash":"bf456460cec0f12ff0bd7222eebece56dc3ee438afb804950862cd7ec98426a0","nodeId":"598b1fb6-7783-4763-bb17-8b6fc67763a2","outcome":"completed","summary":"Neither fork has a fee rule that beats RS2. The best of 48 candidate files scores about −2.7 edge per seed below RS2. Both output files are written, and the result is valid JSON (29.8 KB, under the 64 KB limit).\n\n- **giorgoschionas/amm-challenge** (one branch, `main` @61ba5df): one qualifying file, `contracts/src/Strategy.sol`. It passes `amm-match validate` and scores −211.3 against RS2 on seeds 900000..900031.\n- **maxnorm/amm-challenge** (one branch, `main` @ee285c0): 47 qualifying files, so all were kept (the limit is 50). They are SapientStrategyV4–V49 (V30 is missing), a modified VanillaStrategy and `refs/YQStrategy.sol`. All came from a single commit, so commit order couldn't be used to rank them. All passed `amm-match validate`.\n  - **Best on 32 seeds:** V43 at −2.87. V34, V40 and YQ tie at −2.874 to every digit, so they most likely behave the same.\n  - **On seeds 901000..901255:** V43 scores −2.73 and V39 scores −2.73, both with 0 OutOfGas halts.\n  - **Out-of-gas versions:** V10 has 130,101 OutOfGas calls, V25–V29 and V31–V33 have 533,460 each, and V8 and V9 have 11 each.\n- **Best file's source:** V43 is in `result.json` with its sha256, URL and author (maxnorm). Neither fork has a LICENSE file, which I recorded as the licence status.\n\nThe brief isn't fully met in three places:\n- **Third finalist:** V34 has only its 32-seed result. I ran out of time before its run on seeds 901000..901255.\n- **Mechanism field:** the three-sentence descriptions are shallow. I didn't have time to compare each fee rule properly against RS2's, and the result says so.\n- **Sources:** `sources.json` holds one source, the maxnorm commit message (\"used YQ reference to improve at v34\").","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":800808,"cost":{"source":"runtime","usdMicros":652156},"inputTokens":49,"model":"claude-opus-5-5","outputTokens":12216,"runtime":"claude","turns":27,"wallClockMs":4415811}},{"artifacts":[{"bytes":43455,"hash":"82aa583bf73126cb5c1a4e934c3ee4021848b8b15938f7f9dfbbf129ea694c5c","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-arb-skew/items/a/result.json"},{"bytes":660,"hash":"969f79b475d111f291eec3bf039d0307ebae1e67218f35f4b35e129af079d138","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-arb-skew/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"9f80d540720b8fc0","findings":[],"hash":"c42f025115e1a10ccc91c322508b6f78cb0670a10e38b84573e801c6e39967b2","nodeId":"6624242f-e828-418d-a55e-757fa2bbed91","outcome":"completed","summary":"Created [result.json](artifacts/goal/batches/e08-arb-skew/items/a/result.json) and [sources.json](artifacts/goal/batches/e08-arb-skew/items/a/sources.json).\n\nHeld-out gain versus RS2: **+0.5089 ± 0.0270 SE** across 512 seeds. Zero halts; gas limits passed. Compilation, JSON, hashes, and source quotes verified.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":6450283,"inputTokens":73714,"model":null,"outputTokens":32319,"runtime":"codex","turns":41,"wallClockMs":2311560}},{"artifacts":[{"bytes":62946,"hash":"28cac67e7507fce5b10ce0eb43d5d70dce0fd23480e97c59d4fe24507d346fdf","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e05-design-impl/items/tail-b/result.json"},{"bytes":3120,"hash":"b8a6dbeac0c7db960616a3bf079f34cd54d8260bd257dff41ef1aed08eaa8513","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e05-design-impl/items/tail-b/sources.json"}],"attempt":1,"bundleHash":null,"device":"868942acc8b75a51","findings":[],"hash":"c4ae94f441d087169b303b2fe350048a10c53264d27b7bda97b3534f362d422e","nodeId":"fe16d4bd-7968-423c-b207-c2983e0ad5b1","outcome":"completed","summary":"Created and validated [result.json](artifacts/goal/batches/e05-design-impl/items/tail-b/result.json) and [sources.json](artifacts/goal/batches/e05-design-impl/items/tail-b/sources.json).\n\nIdentity retained. The active diagnostic lost 0.161 edge on held-out seeds (SE 0.020). Zero OOG calls.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":15698560,"cost":{"source":"estimated","usdMicros":4255534},"inputTokens":124171,"model":"gpt-6.1-sol","outputTokens":86748,"runtime":"codex","turns":85,"wallClockMs":5402851}},{"artifacts":[{"bytes":47040,"hash":"b93b7ddd2c7bc0a2894328169619b8a7f48285ca6a531880c1b604c8726650aa","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e01-evaluator-check/items/calibration-and-harness/result.json"},{"bytes":2149,"hash":"cf8242d0e94c7a093573414e869c7ba0c2a113deab1dec87a4042e04416813c1","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e01-evaluator-check/items/calibration-and-harness/sources.json"}],"attempt":1,"bundleHash":null,"device":"6f30d6341cbff249","findings":[],"hash":"c5105cb0be31ff5158361434629bf0e91bad44a18f9e20d51f313ff82a63b457","nodeId":"04b92597-b909-407d-809a-4cc2c71eb015","outcome":"completed","summary":"The evaluator is built and checked. The calibration hits the target exactly, and the STACK self-check shows the runs are fully deterministic. Both files are written: `result.json` is 47,040 bytes, under the 64,000 limit, and `sources.json` is 2,149 bytes. Both parse.\n\n**Results**\n- **Setup:** the brief's script ran cleanly. The wheel checksum matched and `StarterStrategy` validated. STACK's code hashes to the expected `2eaafc79…19`.\n- **Calibration:** CH on seeds 0–999 gives a mean edge of 525.5258821780834, an exact match (residual 0.0).\n- **STACK self-check on seeds [10000, 10256):** the two runs give identical results on every seed. Paired n=256, mean_diff 0, se 0, all 5 worst diffs 0. The retail and arb edge deltas are also 0 ± 0. This is a same-strategy check on tuning seeds, not a board result.\n- **Gas:** STACK peaks at 211,576 afterSwap gas on these seeds with 0 OOG, and both runs report identical raw counters. CH peaks at 151,647 with 0 OOG.\n\n**Checks on the harness**\n- **Config order:** my configs match `MatchRunner._build_configs` on all 12,000 fields for seeds 0–999. Drawing sigma first, or using seed+1, fails the check as it should.\n- **Chunk aggregation:** one 256-seed chunk and four 64-seed chunks give identical per-seed results and gas totals (2,646,095 afterSwap calls either way).\n- **Gas attribution:** the gas counters label whichever contract is the first `run_batch` argument as \"Submission\", whatever it is. Swapping the order flips the 182,878 and 22,592 peaks between the two roles.\n- **OOG fixture:** a strategy built to run out of gas is caught. It logs 18,102 afterSwap OOG over 16 seeds, the arm is marked invalid, its mean_edge is set to null, and pairing returns n=0.\n- **Edge split:** the results have no separate retail and arb edge fields. I rebuild the arb part from the per-step data and check it against the reported arb volume; they agree to a relative error of 4.2e-9. A deliberately wrong fee timing misses by about 80%, so the check does catch errors. Retail edge is total edge minus arb edge.\n\n**Problems found in the simulator (reported, not changed)**\n- **Halts are silent:** when afterSwap runs out of gas or reverts, the simulator keeps the previous fees and returns a normal edge (`cfmm.rs`). The only place a halt shows up is `gas_stats()`, so any harness that reads only edges would score a halting strategy without noticing.\n- **`gas_stats()` can't be checked against the pinned source:** it exists only in the 0.1.0.post1 wheel, not in the Rust code at commit 6b6921f8. I verified how it behaves by testing, not by reading its source.\n- **One shared gas counter:** `gas_stats()` keeps one set of counts for the whole process. Each chunk needs a reset before and a snapshot after, and no two batches can run at once in the same process. Finding which seed halted means re-running the flagged chunk one seed at a time.\n- **STACK's init gas is close to the limit:** its `afterInitialize` uses 220,962 of its 250,000 gas, more than its afterSwap peak.\n\nI did not re-run CH through `MatchRunner.run_match` as a second route. The exact calibration match and the config check cover it. No seeds at or above 5,000,000 were used.\n\n`result.json` holds the full harness source, the OOG fixture, the check scripts, the commands, the compiler settings and dependency versions. `sources.json` lists 11 quotes from the pinned repo, the CH file and the STACK artifact. I confirmed each quote is present at its URL.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1668617,"cost":{"source":"runtime","usdMicros":1653248},"inputTokens":56,"model":"claude-opus-5-5","outputTokens":30656,"runtime":"claude","turns":34,"wallClockMs":627125}},{"artifacts":[{"bytes":25236,"hash":"ef86b523a51644542fdbac2470e6d3205f744656230a0771a66a88af54bb8361","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e03-v10-blend/items/b/result.json"},{"bytes":818,"hash":"4744fc493c4067bdfc68e8004096c8e813d1a97f33d6a62d8e244f9803f5a375","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e03-v10-blend/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"759c614fdc84ff66","findings":[],"hash":"c54f664b4353bbc078b2560ee8e68de22d5df082f3bc603ce2f02497c7ebe564","nodeId":"3f9be28c-5cb2-4bbe-9026-11277e5c3883","outcome":"completed","summary":"Item b is finished, and none of the three variations beat V10. Partially feeding the posterior into the price signals doesn't move the score, so this approach can't get close to the +5.0 needed for the top 10.\n\n**Setup check:** setup ran cleanly. CH on seeds 0..999 gave a mean edge of 525.5258821780834, exactly the figure in the brief. The V10 and STACK code hashes match.\n\n**Screen (first 128 tuning seeds, each against V10):**\n\n| Axis | Value | Gain vs V10 |\n|---|---|---|\n| A: posterior weight in the toxicity price | 0.15 | −0.009 ± 0.013 |\n| A | 0.3 | +0.003 ± 0.018 |\n| A | 0.5 | +0.004 ± 0.024 |\n| B: posterior weight in `staleHat` | 0.5 | −0.74 ± 0.06 |\n| B | 0.7 | −2.40 ± 0.10 |\n| C: `STALE_DIR_COEF` multiplier | ×0.8 | −4.8 ± 0.19 |\n| C | ×1.25 | −18.9 ± 0.8 |\n| C | ×1.5 | −107 ± 2.9 |\n\nOnly axis A had any value ahead of V10, and only by amounts well inside the noise. So the combination of each axis's best is just A at 0.5.\n\n**Shortlist (next 384 seeds, against V10):** A at 0.5 gave +0.0002 ± 0.014, A at 0.3 gave +0.0017 ± 0.011, and A at 0.15 gave −0.013 ± 0.009. I froze A at 0.3, which is V10 with a 0.3 posterior weight in the toxicity price and nothing else changed. With V10's settings, the frozen code gives exactly V10's results on 16 seeds. It passes `amm-match validate`. Its sha256 is `c8a4b226…5a8eb`.\n\n**Confirm block 5018000..5019999 (2,000 seeds, run once, not used for any choice):**\n\n| Comparison | Mean gain | Notes |\n|---|---|---|\n| Frozen vs STACK | +0.121 ± 0.015 | worst seed −4.03; arb edge +1.68, retail edge −1.55 |\n| Frozen vs V10 | −0.005 ± 0.006 | |\n| V10 vs STACK, same seeds | +0.126 ± 0.014 | |\n\n**Gas:** no out-of-gas calls, reverts or halts in any arm of any run. The frozen code's highest successful `afterSwap` call was 195,466 gas, against STACK's 214,029.\n\n**Conclusion:** V10 is already at the best point on all three axes, and `STALE_DIR_COEF` especially is a sharp peak, losing heavily either side. The gains you need will have to come from a new mechanism.\n\nBoth files parse as JSON: `result.json` (25 KB, under the 48 KB limit) and `sources.json`, which cites four sources. The sources are the two artifact URLs, the CH contract and the challenge's `match.py`, each with a passage copied exactly. All other work stayed under `test/scratch/`.\n\nOne thing to check: `git status` now lists untracked files at the repository root that I didn't create (`.bashrc`, `.gitmodules`, `.claude/`, `.idea` and others). I left them alone.\n\nFiles are in `artifacts/goal/batches/e03-v10-blend/items/b/`:\n- result.json\n- sources.json","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":863750,"cost":{"source":"runtime","usdMicros":917419},"inputTokens":40,"model":"claude-opus-5-5","outputTokens":15777,"runtime":"claude","turns":23,"wallClockMs":2550042}},{"artifacts":[{"bytes":43917,"hash":"4ec1f898bb8c648a9d857a9e6af0f2d506b6b33951dd618353eea1be173ab6c8","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-replica/items/a/result.json"},{"bytes":4430,"hash":"da8def546b596ca631ae7f7fc72e44728bdb9a3a6cddc90b7b0277c454713939","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-replica/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"a84da3707fa87187","findings":[],"hash":"c5c0b11e5c5c47c8fdd89a5f45ee9fc8539f414cfecdac4eb75fa1df7c5e2799","nodeId":"ad80425c-1cff-49f6-aa3f-3ebd20d84186","outcome":"completed","summary":"Created [result.json](artifacts/goal/batches/e08-replica/items/a/result.json) and [sources.json](artifacts/goal/batches/e08-replica/items/a/sources.json).\n\n- Replica: ~713 markets/second, 8 processes.\n- Real CH reference matched exactly; zero OOG calls.\n- Validation, transfer results, and limitations included.\n- JSON, offline fallback, and all 19 source quotations checked.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1249536,"cost":{"source":"estimated","usdMicros":2935306},"inputTokens":62287,"model":"gpt-6-astra","outputTokens":21258,"runtime":"codex","turns":8,"wallClockMs":601773}},{"artifacts":[],"attempt":1,"bundleHash":null,"device":"9a9cbce82297045e","findings":[],"hash":"c7847598cc5dffe71acdd7beab9558d546f98ba2288cd07f2dd77dcab0694a31","nodeId":"236979c3-da0c-41e5-81b2-9fbd5f3839ac","outcome":"failed","summary":"wrote outside the task's allowed paths: scratch/__pycache__/harness.cpython-312.pyc","treeHash":null,"usage":{"cachedInputTokens":3931008,"inputTokens":86560,"model":null,"outputTokens":17872,"runtime":"codex","turns":6,"wallClockMs":2506365}},{"artifacts":[{"bytes":13951,"hash":"ed7e47920d5cfcb01dc8ec949333daf0ebd659d03a516e1500953e69b6ce6cc7","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-public-measure/items/b/result.json"},{"bytes":1576,"hash":"5726a45e30c253a9723711258b9bba0aacc5220c715e185f44d403132a61c47a","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-public-measure/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"a11137177fc72d8b","findings":[],"hash":"c84156a39699867f14ef74cac204f5d80942337f3cb97133fbfe3cdf92e4b4ce","nodeId":"13cd2c5d-c81c-42fb-b5f0-abe691c83727","outcome":"completed","summary":"I measured all six public strategies against RS2, and none of them beats it. The best three are 2.7 to 3.2 behind on 256 seeds, so none of these files is a route toward the +5.0 the goal needs.\n\nAll six compile and pass `amm-match validate` without changes. Each file's sha256 matches the bytes at its recorded commit on raw.githubusercontent.com, and RS2's sha256 matches the brief. None of the five repositories has a LICENSE file, and GitHub reports no licence for any of them. Every file carries only an `SPDX-License-Identifier: MIT` line.\n\n**Seeds 900000..900031 (difference from RS2):**\n\n| File | Repository commit | Difference vs RS2 |\n|---|---|---|\n| ylintern `Strategy.sol` | 52875e2 | −2.86 |\n| lumen-dev-a11y `my_strategy.sol` | 4eae7bd | −2.87 |\n| 0xniki `my_strategy.sol` | 56ca9d1 | −3.59 |\n| dipankar `SigmaAdaptiveStrategy.sol` | c588ae6 | −8.02 |\n| happybigmtn `Strategy.sol` | d354d0f | −20.14 |\n| happybigmtn `Strategy_best_494.sol` | d354d0f | −32.85 |\n\n**Best three on seeds 901000..901255 (n=256):**\n\n| File | Difference vs RS2 (se) | Retail edge change | Arb edge change | Peak afterSwap gas |\n|---|---|---|---|---|\n| ylintern | −2.757 (0.078) | −1.70 | −1.05 | 147k |\n| lumen | −2.720 (0.076) | −0.88 | −1.84 | 152k |\n| 0xniki | −3.222 (0.102) | −4.86 | +1.64 | 147k |\n\n- **Gas:** no candidate and no RS2 run had an out-of-gas, revert or other failed call. RS2's afterSwap peaks at 202k, under the 250k limit. Its afterInitialize peaks at 243k.\n- **Mechanisms:** the best three use the same fee family as STACK, with an extra cubic toxicity term. They have none of RS2's additions: the censored price posterior, the recentering after quiet steps, the arb-weighted estimate of retail flow, and the caps on the cheaper side's fee. The only new idea among them is lumen's two-level base fee, 3 bps when volatility is high and 1 bps otherwise.\n\nI didn't run the goal-level CH check (seeds 0..999), because this item's setup doesn't require it.\n\n`git status` lists some untracked files that I didn't create (`.bashrc`, `.gitmodules`, `.claude/` and others). I left them alone.\n\nFiles are in `artifacts/goal/batches/e08-public-measure/items/b/` (both parse as JSON; result.json is about 14 KB):\n- result.json\n- sources.json","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":770749,"cost":{"source":"runtime","usdMicros":927964},"inputTokens":40,"model":"claude-opus-5-5","outputTokens":14617,"runtime":"claude","turns":25,"wallClockMs":610744}},{"artifacts":[{"bytes":27806,"hash":"c7bba437907b92c5e94c2d2d56b3582e64b3b37e27055e002dbf6755b2dd9cc1","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e03-shadow/items/a/result.json"},{"bytes":15,"hash":"73608e3346e331760ac29f17144976922e84678fed8a2eb7cc66f6ef0e89a33c","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e03-shadow/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"7c0191a32541eb74","findings":[],"hash":"c905917de0c7fccf4b6675b2041b69b414f3b0b02c9f7f08f5aecfdc51df3ef5","nodeId":"19d58310-84ef-485c-84a0-e1d0b7d5f492","outcome":"completed","summary":"The shadow-value overlay didn't beat STACK. The best candidate scored −0.024 ± 0.010 on the held-out block (n=512, seeds 610000..610511), below the confirm gate (more than 2 se and at least +0.05). So `confirm` is null and seeds 5032000..5034000 were never run.\n\n**Checks:** the STACK hash matched, the CH check came out at exactly 525.5258821780834 on seeds 0..999, and with kap=0 the modified contract gives results identical to STACK on 32 seeds. The frozen candidate passes `amm-match validate` and its sha256 is `263a8b85…92f1`.\n\n**Search results:**\n- **CMA-ES block (64 seeds, seed 1):** every candidate with kap>0 lost to STACK, and the more it moved fees the worse it did. kap 0.25–0.36 scored −0.17 to −0.23. Early probes at kap=1 and kap=3 scored −0.48 and −4.17. The four candidates that clipped to kap=0 scored exactly 0, since they are STACK.\n- **Recheck (256 seeds):** the top 3 candidates with kap>0 scored −0.007±0.010, −0.122±0.023 and −0.091±0.020. The best is frozen with kap 0.048, km 0.90, sm 0.87, wa 0.42.\n- **Held-out:** paired gain −0.0237 ± 0.0099, worst seed −3.35. It gains +0.132 on arb edge and loses −0.156 on retail edge: widening the fee on the exposed side gives away more retail flow than it saves from arbitrage.\n- **Gas:** peak 222.7k against STACK's 211.6k on the same seeds, with zero OutOfGas or other halts in every run.\n\n**Where I departed from the brief (all recorded in the result's notes):**\n1. **Search length:** the search ran 2 generations (20 evaluations, about 10 minutes), not 30 minutes. Each 64-seed evaluation took about 30 s on this 4-core machine, and the time left would not cover the full search plus the later steps. The trend in kap was consistent throughout, but this was a short search.\n2. **Pairs:** I used 3 fee pairs instead of 5. With 5, peak gas was already 239.3k on 32 seeds, and STACK's own peak runs about 26k higher on larger seed sets, so it would likely have gone out of gas. Following the brief's fallback rule, the 3 pairs are the current pair plus ±3bp on the exposed side.\n3. **Reserve scaling:** the brief's \"y/4\" term is read as the arb penalty measured as a fraction of reserveY, the same scale as the retail term. Which fee pair wins doesn't change either way.\n\nThe arb edge was rebuilt from each step's prior spot price and fees, the fair price, and the constant pool size, with retail = total − arb.\n\nI wrote only `result.json` (27.8 KB) and `sources.json`, both untracked; both parse. The two sources are lines from the amm-challenge repo at the pinned commit, and I checked that each quote appears there exactly. All scratch work is under `test/scratch/`.\n\n`git status` also lists untracked files at the repository root that I didn't create, such as `.bashrc`, `.gitmodules` and `.claude/`. I left them alone.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1328781,"cost":{"source":"runtime","usdMicros":1303390},"inputTokens":53,"model":"claude-opus-5-5","outputTokens":28865,"runtime":"claude","turns":30,"wallClockMs":2412485}},{"artifacts":[{"bytes":50066,"hash":"26cb8e86f05170308de2a4b24821ac7fad2a17077f8d94af6e0f31985343fe89","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-run-anchor/items/act-a/result.json"},{"bytes":1038,"hash":"fc9d60c112e84f7b22dc758a3d8df1e58fbeae8efd6a519e6cc82e5393f29805","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-run-anchor/items/act-a/sources.json"}],"attempt":1,"bundleHash":null,"device":"9523c8447c9485ed","findings":[],"hash":"c9b94738840e906d27d5c78c137242cd2ce40b3f74d663beda05355cade11d9c","nodeId":"983a5f55-2679-472b-97bf-7b419e8a2a59","outcome":"completed","summary":"Created both JSON deliverables.\n\nHeld-out gain versus RS2: **+0.1106 ± 0.0141 SE** across 512 seeds. Zero halts; all 32 parity seeds matched exactly. Gas limits and the 64,000-byte output cap passed.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":6940800,"inputTokens":123411,"model":null,"outputTokens":32033,"runtime":"codex","turns":39,"wallClockMs":2310559}},{"artifacts":[{"bytes":23564,"hash":"4c2f14d1ebc1f0f66a68e5570fe601e7025bada5d62bf2722225c16a1f582f44","mediaType":"application/json","name":"decisions","path":"artifacts/goal/episodes/006/decisions.json"}],"attempt":1,"bundleHash":null,"device":"468e82a89b9bfe18","findings":[],"hash":"cab44c8c50c7bbdd6753f074e0ba1456508716eb525312422639f47b88822bfb","nodeId":"3d495d75-b418-441a-8678-f9bef95e88d0","outcome":"completed","summary":"The decisions file for episode 6 is written and validated at `artifacts/goal/episodes/006/decisions.json`. It is left untracked for the daemon to upload.\n\n**What the handed results showed**\n- RS1 confirmed on its second fresh block at +0.085 over V10 (se 0.008, 0 halts), meeting the requester's +0.07 bar on that block. The first block is still running.\n- RS2 (rs-search/a, sha f24b6ca1…) measured +0.162 over V10 and +0.081 over RS1 on held-out tuning seeds, with its CMA search pinned against three parameter bounds. Its gain is a retail-for-arb trade.\n- rs-search/b was blocked by the sandbox proxy, so it is not a tried idea.\n- Transition-policy, band-transport, the uncertainty floor on V10 and RES-TABLE all came back flat or negative on both copies and are retired. retail-state/a was incomplete and gives nothing to stack.\n\n**What the file decides** (12 items, 63 of 400 used if admitted)\n- `e06-confirm-rs2` a/b: exact RS2 vs RS1 and V10 on fresh blocks 5104000 and 5106000, with CH calibration and per-arm gas.\n- `e06-rs2-wide` a–f: six CMA-ES restarts of the RS2 family with widened bounds, each with a 512-seed held-out against RS2 and V10.\n- `e06-rs-side` a/b: a per-side direction state feeding each side's flow input, parity at zero.\n- `e06-rs-post` a/b: the cleaned retail rate fed into V10's posterior prior for first-print arb probability, parity at zero.\n- No cancellations. Wake on the two confirmation batches and the ablation settling, or after 100 minutes. Finish stays false.\n\n**Checks run**: every filled brief is between 2,888 and 2,986 characters, each contains the setup script once, every placeholder has a var in every item, notes are 7,963 characters, the read list has 21 entries, and every handed result's code hash was recomputed and matches its claim. The notes carry the seed ledger forward (next free confirmation block 5108000, next free tuning band 900000) and the promotion rules for episode 7.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":3360128,"cost":{"source":"runtime","usdMicros":8288990},"inputTokens":706,"model":"claude-fable-5-1","outputTokens":73722,"runtime":"claude","turns":26,"wallClockMs":869293}},{"artifacts":[{"bytes":43958,"hash":"5a9bc2928bb65aef7e26b750ec7e028bd5389a172753d1f36ca53c3bd08c7ea1","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-fork-mine/items/h2/result.json"},{"bytes":1033,"hash":"4ad0e1681abcb8ed827cd93764ed2d5fe07717a3806d61f0f1660b20e0cf3d9f","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-fork-mine/items/h2/sources.json"}],"attempt":1,"bundleHash":null,"device":"989e104186cad5ec","findings":[],"hash":"cb705ed6e2392c327e3afe00425ccd2f711c4b50294ad2e8d04f1ad9b0d404b7","nodeId":"738a19ee-ad1a-4c0d-828a-f56bc4eebde2","outcome":"completed","summary":"Neither fork has a fee rule that beats RS2. The best one loses to it by about 2.0 edge per seed.\n\n**sisyphusSmiling/amm-challenge:** no file to test. Its `main` branch only has the original repo's contracts, unchanged, and its three `v1/pipeline-*` branches only hold a `CumulativeMerkleDrop.sol` contract, which has no `afterSwap`.\n\n**solosage1/amm-challenge:** every candidate is on `main`; its other six branches only carry the original repo's files.\n- **Files found:** 159 files define `afterSwap` and differ from the original repo; 155 are unique.\n- **Selection:** I skipped the 50 most recently committed and kept the next 80. The 25 oldest were not looked at.\n- **Tie-break:** 131 files share one commit, so within it I ordered by path. All 80 kept files come from that commit.\n- **Validation:** 77 of the 80 pass `amm-match validate`. The other 3 run out of gas in `afterInitialize`.\n- **32-seed screen (900000..900031):** all 77 score below RS2, from −2.24 down to −349.7. None ran out of gas.\n\n**Best 3 against RS2 on 256 seeds (901000..901255):** none ran out of gas; RS2 itself peaked at 202,386 gas, also with none.\n\n| File | Paired mean ± se | Retail Δ | Arb Δ | Max gas |\n|---|---|---|---|---|\n| `TmpDirectionalSkewMod_v16.sol` | −2.03 ± 0.07 | −2.51 | +0.49 | 150,905 |\n| `TmpEval.sol` | −2.19 ± 0.07 | −2.31 | +0.12 | 150,737 |\n| `TmpToxAct_v206_candidate.sol` | −2.24 ± 0.06 | −1.43 | −0.81 | 150,915 |\n\nA positive arb Δ means the file loses less to arbitrage than RS2 does.\n\n- **What the files are:** solosage1's files are a log of automated tuning runs within the same fee-rule family RS2 comes from. What they do differently is all small:\n  - a 3 bps band that must be crossed before the stale-price shift applies;\n  - a knee below which toxicity is not charged;\n  - an activity fee that only switches on with enough trading and fades out as toxicity rises;\n  - a different slope when compressing high fees.\n- **Where they lose:** they all lack RS2's posterior estimate of the fair price, and they lose on retail more than they gain on arbitrage.\n- **Best file's code and licence:** the result includes its full source. The fork has no LICENSE file; its `pyproject.toml` says MIT, inherited from the original repo.\n- **Not done:** I did not run the goal-level calibration check of the CH strategy on seeds 0..999, because this item's brief doesn't ask for it. I never ran any of the forks' own scripts. No seed at or above 5,000,000 was used.\n\n`git status` shows some untracked dotfiles and folders in the repository root (`.bashrc`, `.claude/`, `.gitmodules` and others) that I did not create. I left them alone, but they sit outside this item's allowed paths, so they should be checked before submission.\n\nFiles are in `artifacts/goal/batches/e07-fork-mine/items/h2/`:\n- `result.json` (44 KB; per-file table, best 3, notes)\n- `sources.json` (5 sources; the quotes from the fork's files were checked against the live raw files)","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":962182,"cost":{"source":"runtime","usdMicros":981546},"inputTokens":42,"model":"claude-opus-5-5","outputTokens":16604,"runtime":"claude","turns":24,"wallClockMs":1013620}},{"artifacts":[{"bytes":22194,"hash":"b881945f5a415dae53ab22366054c4362d167bd5b88f372680dc995aebdbe21d","mediaType":"application/json","name":"decisions","path":"artifacts/goal/episodes/002/decisions.json"}],"attempt":1,"bundleHash":null,"device":"98b4506bef931d13","findings":[],"hash":"cbaa22c3932aacff5565642cb3588de95961dc9ebd41e3b647a6a0f6d792e100","nodeId":"e2bfaab7-0587-4a3c-97f5-bfc1012361a0","outcome":"completed","summary":"The decisions file for episode 2 is written and validated at `artifacts/goal/episodes/002/decisions.json`. It is untracked, as required, and the only other writes went to `test/scratch/` and the temp directory. The `.gitmodules` entry in git status is a sandbox character device, not a file of mine.\n\n**Where the goal stood**: episode 1's three batches (7 items) are still queued with nothing run and nothing handed. This episode woke on the requester's opening note, which episode 1 never saw. I read the three sources it cites (the two prior write-ups and the simulator rules) plus STACK's code, and summarised them in the notes so later episodes need not re-read them.\n\n**What I decided** (8 new items, 15 of 400 used if admitted, no cancellations):\n\n- **e02-board-fit** (2 items, requester direction 4a): fit the leaders' per-run bid and ask fees against retail volume, arb volume and a volatility proxy from the board's per-run API data, rank entries by residual spread, and state one Solidity-codable rule hypothesis per entry family. Item a covers ranks 1 to 5, item b ranks 6 to 10 and 20, both against STACK and 1st.\n- **e02-search-share** (2 copies, direction 4b): STACK with only the attracting side replaced by a blend of its own fee and the router-share revenue-optimal fee minus an arb-risk term, searched with CMA-ES.\n- **e02-search-arbside** (2 copies, direction 4d): STACK with only the exposed side redesigned from the arb's band-edge sizing identity, conditioned on STACK's own arb classifier and sigma rather than on gap alone.\n- **e02-search-regime** (2 copies, direction 4c): 15 mapping constants times 4 print regimes as log-multipliers, 60 parameters, CMA-ES from STACK's values.\n\nEach search copy has its own tuning range and CMA seed, stops searching at 30 minutes, and reports a 512-seed held-out tuning estimate plus its evaluation log for warm-starting. None touches seeds at or above 5,000,000, so the confirmation ledger is unchanged with 5008000 next free. Episode 1's pilots stay queued, with a note that two of them overlap retired families.\n\n**One trade-off to flag**: the verbatim setup script takes 945 of the 3,000 characters a brief may hold, so the search briefs omit the CH calibration line. The notes say the evaluator item runs it and that every confirmation brief must carry it.\n\n**Next episode** wakes when the four new batches settle or after 120 minutes. The notes give it the promotion rule: a held-out gain over twice its standard error and at least +0.1 goes to a two-copy fresh-block confirmation of 2,000 seeds each, pooled to the requester's 4,000-seed bar.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":3290910,"cost":{"source":"runtime","usdMicros":7357669},"inputTokens":834,"model":"claude-fable-5-1","outputTokens":61915,"runtime":"claude","turns":35,"wallClockMs":867330}},{"artifacts":[{"bytes":37648,"hash":"f27d221edf352101e0d70d5dac492a931107fc8fbc7f2f68fdf1c460fa72f5a4","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e05-rs-ablate/items/a/result.json"},{"bytes":3322,"hash":"974d6e4aaf59d143ff222328904650813d9fc030451e9362446ad329b089bdb9","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e05-rs-ablate/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"83e7e92833e57c52","findings":[],"hash":"cf9917b7832d68dbf9becea885c5eaa33ee74a42ee02b08e3cb35055624d14d5","nodeId":"8d5ee750-76e0-4d56-925d-b1406d798a67","outcome":"completed","summary":"Completed all nine arms on 512 seeds each. RS1 gained **+0.07914 versus V10 (SE 0.01679)**. Size replacement carries the gain; strong correction reduces it. Zero OOG calls.\n\n[Results](artifacts/goal/batches/e05-rs-ablate/items/a/result.json) · [Sources](artifacts/goal/batches/e05-rs-ablate/items/a/sources.json)\n\nBoth JSON files passed validation; all 10 source quotes were rechecked.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":4242432,"cost":{"source":"estimated","usdMicros":1296754},"inputTokens":63249,"model":"gpt-6.1-sol","outputTokens":32177,"runtime":"codex","turns":29,"wallClockMs":1906032}},{"artifacts":[{"bytes":55068,"hash":"33f54e81f3372088e9eced52c0174f310ac348af98ef5727b73785c088679194","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e01-mechanism-pilots/items/censored-price/result.json"},{"bytes":2501,"hash":"fd34bbf8954f57a637d1d21fe5e7f1e6d7f9e8b7e6b5e3847ab2ddfec36f6c1b","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e01-mechanism-pilots/items/censored-price/sources.json"}],"attempt":1,"bundleHash":null,"device":"702ed53e16fa8728","findings":[],"hash":"cfdca07d8ec80d5dfbbe93639b92b739855ede670437035e146ba6735478bcc3","nodeId":"1ec2b754-f3c9-4367-8265-d294da9daaaa","outcome":"completed","summary":"Created `result.json` and `sources.json` in the requested directory.\n\nConfirmation: **+0.1372 edge over STACK**, SE **0.0136**, across **2,000 seeds**, with **zero OOG or other halts**. This is below the roughly **+5** target.\n\nJSON, source hash, size and all 11 source passages passed checks. Temporary files were removed.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":8724864,"cost":{"source":"estimated","usdMicros":2394785},"inputTokens":88841,"model":"gpt-6.1-sol","outputTokens":47213,"runtime":"codex","turns":16,"wallClockMs":2053320}},{"artifacts":[{"bytes":38158,"hash":"f5c0a005311eb021f2c3fd5ee03570122169198091622ec6ca13b284e69ded55","mediaType":"application/json","name":"decisions","path":"artifacts/goal/episodes/008/decisions.json"}],"attempt":2,"bundleHash":null,"device":"468e82a89b9bfe18","findings":[],"hash":"d02863b94d55fc782f407dbbc1c5e1e348f004b061c316b66e05e2b68c5459e8","nodeId":"65d11c4a-1ced-48b5-a2c6-9b77e8b9850d","outcome":"completed","summary":"The decisions file for episode 8 is written to `artifacts/goal/episodes/008/decisions.json`: one JSON object, 8 new batches with 22 items, `finish` false. It is left untracked as a declared output.\n\nI never learned what exactly made `spawn.1` and `spawn.2` invalid in the rejected attempt, so this file is built conservatively and checked locally by script, not against the plane's own validator:\n\n- **Brief length:** every filled brief is at most 2,966 ASCII characters, including the verbatim setup script.\n- **Vars:** every placeholder has a short string var in every item, and no item carries an unused var; the mechanism text sits in the brief, not in a var.\n- **Shape:** every batch has `name`, `brief`, `items`, `output` and `merge`, with names not used before and lowercase keys.\n\n## What the handed results showed\n\n- **Nothing beats RS2.** The best wide-search copy is +0.019 (se 0.009) over RS2, under the gate; the two posterior-odds variants are negative or flat. The 7-parameter RS family is closed.\n- **Public code is no shortcut.** Every public strategy file scored so far loses to RS2 by 1.8 or more, and every state-estimation file found is the same architecture with retuned constants. Of the top 30, only one entrant has published code, and it is not shown to be their board entry.\n- **Useful public lead.** The organiser's account of the top eight names neural networks in Solidity, rules with over 100 tuned constants, and one entry that models the competitor pool.\n- **One blocked item.** `e07-run-anchor/sigma-a` failed at clone, so it is not a tried idea.\n\n## Decisions\n\n| Batch | Items | What one item does |\n| --- | --- | --- |\n| `e08-replica` | 5 | Builds a fast numba replica of the market, validated against the real simulator |\n| `e08-rs2-port` | 4 | Ports RS2 to Python on the same interface, tested callback by callback against the EVM |\n| `e08-vanilla-quote` | 3 | Competitor-pool model steering the attracting side's fee |\n| `e08-dual-anchor` | 2 | Competitor pool's inferred spot as a second price anchor |\n| `e08-arb-skew` | 2 | Skew driven by arbitrage probability, outliers capped |\n| `e08-sticky-dev` | 2 | Peak-hold deviation beside the toxicity signal |\n| `e08-arb-surge` | 2 | Surcharge on arbitrage streaks |\n| `e08-public-measure` | 2 | Scores the six unscored public files against RS2, with owner, commit, path and licence |\n\n- **Resume:** `e07-fork-mine` and `e07-run-anchor`, so their held items run now.\n- **Cancel:** `e05-confirm-rs` (RS1 is superseded) and `e06-rs2-wide` (family closed).\n- **Wake:** when the eight new batches settle, or after 100 minutes.\n- **Read:** 30 results — the 22 new items plus eight still out from episode 7.\n\nThe replica and port are a two-stage bet: every search so far ended in tenths because the EVM simulator allows only 60–180 evaluations per item. If both validate, episode 9 can run a wide search wave through them; the notes carry that plan, the seed ledger and the licence record. The sticky-deviation and arb-surge mechanisms rest on code fragments I read from the organiser's article through a fetch tool and could not verify, so those briefs ask the worker to quote what the page actually shows.\n\nHonest status is unchanged: local gain is about +0.31 over STACK, and 10th place is about +4.6 above RS2's expected board score.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":4772539,"cost":{"source":"runtime","usdMicros":11415800},"inputTokens":61,"model":"claude-fable-5-1","outputTokens":103499,"runtime":"claude","turns":34,"wallClockMs":1066297}},{"artifacts":[{"bytes":63707,"hash":"eba088284a285094bb188c71be39a4cb6b16f0739d3dadc1b96f7cad3f0172eb","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e05-design-impl/items/cont-a/result.json"},{"bytes":2433,"hash":"0602e415a9fb54abf444841244ebd3efd9dfe99b8872125961c2c800e07cd37e","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e05-design-impl/items/cont-a/sources.json"}],"attempt":1,"bundleHash":null,"device":"84a29c6575331b77","findings":[],"hash":"d0b2adb419d474bc326e41e60eaf63136466dbed4c4134eb4c9d0f8e2ff0caa0","nodeId":"a4454cf7-033d-4185-9d49-9af10d23a40f","outcome":"completed","summary":"Created [result.json](artifacts/goal/batches/e05-design-impl/items/cont-a/result.json) and [sources.json](artifacts/goal/batches/e05-design-impl/items/cont-a/sources.json).\n\nHeld-out overlay: **−0.04449 edge vs V10**, SE **0.01297**, 512 seeds. Zero OOG; parity and integrity checks passed. **Retain V10.**","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":10524544,"inputTokens":84547,"model":null,"outputTokens":56775,"runtime":"codex","turns":31,"wallClockMs":2530393}},{"artifacts":[{"bytes":43580,"hash":"d7da168c530429b4a1954eca997f3a100979fbe0f5ed4e7a1e27b979a088d0dd","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e03-shadow/items/b/result.json"},{"bytes":2805,"hash":"0485f9631cd7f7703b68aabae8814ceced196432bdbb3bacdaf6e2b09b3f62a5","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e03-shadow/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"7df8c87bdf5d7822","findings":[],"hash":"d11a0460a069f73a122b09a1bb91f3f16c3b5c368757500137529aa471cd738c","nodeId":"fbf42c30-b2eb-4eb7-9aee-b3b3acd01216","outcome":"completed","summary":"Created [result.json](artifacts/goal/batches/e03-shadow/items/b/result.json) and [sources.json](artifacts/goal/batches/e03-shadow/items/b/sources.json).\n\nHeld-out gain: **−0.04514** (SE **0.01297**, n=512). Zero OOGs. Confirmation skipped; fresh seeds untouched.\n\nJSON, hash, size, and statistics checks passed.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":14999168,"inputTokens":95787,"model":null,"outputTokens":64430,"runtime":"codex","turns":69,"wallClockMs":5030279}},{"artifacts":[{"bytes":30474,"hash":"41bd9f034cc93466a7b9616a17a15a1e0d28f19a54480559b5c5a3c18b8506da","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e09-confirm-act/items/b/result.json"},{"bytes":989,"hash":"2d62ad9116e5a29206a2f87388d0ed2ec74c6c3b6c92fd588cdb31a68431bf34","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e09-confirm-act/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"a8006a8757108cd3","findings":[],"hash":"d1a0b556f5fe385c4548a46364a783979b7d46dec411b07c6697572ab93676b3","nodeId":"f88994ae-508a-4a10-948b-30c86e575e78","outcome":"completed","summary":"The confirmation run finished and is valid. The candidate (sha256 `0c3836cd…2484`) beats RS2 by **+0.095 ± 0.008** and STACK by **+0.417 ± 0.014** on fresh seeds 5114000–5115999 (n=2000). That is well short of the roughly +5.0 over STACK the goal says 10th place needs.\n\n**Checks before the run**\n- All three code hashes match the brief: candidate `0c3836cd…2484`, RS2 `f24b6ca1…eaf2`, STACK `2eaafc79…5719`.\n- The calibration strategy (CH) on seeds 0..999 gives a mean of 525.5258821780834, an exact match to the expected value.\n- I used the harness from artifact H without changes. Its market settings match `MatchRunner._build_configs` at commit 6b6921f.\n- The candidate was fixed before the fresh seeds were run. Each strategy ran once, with no retries, no dropped seeds and no selection.\n\n**Results (each strategy run alone against VanillaStrategy, chunks of 20, gas counters reset per chunk)**\n\n| Comparison | Mean difference | SE | Worst seed | Retail edge change | Arb edge change |\n|---|---|---|---|---|---|\n| Candidate vs RS2 | +0.0947 | 0.0076 | −1.66 (seed 5115646) | −0.502 | +0.597 |\n| Candidate vs STACK | +0.4166 | 0.0137 | −6.45 (seed 5114551) | −0.129 | +0.545 |\n| RS2 vs STACK (reference) | +0.3219 | 0.0141 | −6.66 (seed 5114551) | — | — |\n\n- **Gas:** no OutOfGas and no other halts in any of the three runs. The candidate's highest successful `afterSwap` was 203,771, under the 250,000 limit. Its `afterInitialize` peaked at 243,118, which I report separately as the brief asks.\n- **What the gain is made of:** the candidate loses less to arbitrage but earns less from retail trades. Against RS2 it is a small net gain, consistent with the earlier 512-seed held-out run (+0.11).\n\n`result.json` also contains the full code, per-strategy gas counters, `sum_d` and `sum_d2` for pooling, the harness hash and the commands. `sources.json` lists the three artifact URLs, the CH strategy file and `match.py` at the pinned commit, each with an exact quote. Both files parse as JSON. The checkout and scripts are in `test/scratch/` and are not submitted.\n\nFiles are in `artifacts/goal/batches/e09-confirm-act/items/b/`:\n- result.json\n- sources.json","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":360627,"cost":{"source":"runtime","usdMicros":487798},"inputTokens":23,"model":"claude-opus-5-5","outputTokens":8691,"runtime":"claude","turns":12,"wallClockMs":649401}},{"artifacts":[{"bytes":52945,"hash":"03da9f9e554abdedaedfad0bfaec737591c0e35ce2d2b12830d061a9c7f44ce1","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e02-search-share/items/a/result.json"},{"bytes":2540,"hash":"3efb5e6b8f35210a467eae16980258b602d08de3304c517b418ab5165e2145c6","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e02-search-share/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"74568cca2ef24e2f","findings":[],"hash":"d38b3835f7378b05f0462c256caea9a62d911732307e08ae04f94bacfa155a38","nodeId":"4d74be85-b686-4678-8e80-c437e34e2180","outcome":"completed","summary":"SHARE did not improve STACK: **−0.2321 edge** (SE 0.0129; 512 seeds). Zero OOG halts; peak `afterSwap` gas: 219,173.\n\nValidated [result.json](artifacts/goal/batches/e02-search-share/items/a/result.json) and [sources.json](artifacts/goal/batches/e02-search-share/items/a/sources.json), including all 12 source quotes.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":10091136,"cost":{"source":"estimated","usdMicros":2740541},"inputTokens":92422,"model":"gpt-6.1-sol","outputTokens":53747,"runtime":"codex","turns":40,"wallClockMs":2754506}},{"artifacts":[{"bytes":53229,"hash":"1ac464900c854a639ef3706f011f73d2849154d5442f3a8fb96d05223780ab0a","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e06-rs2-wide/items/d/result.json"},{"bytes":923,"hash":"38c3b6c8b48e212141f4e690d3a997e33d717e86e41c8dd7aa9089e81366244e","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e06-rs2-wide/items/d/sources.json"}],"attempt":1,"bundleHash":null,"device":"884410e598069409","findings":[],"hash":"d39fb16fad05eda595fc56a85e15c7574ee147937d6b27c5ad577c64e55737aa","nodeId":"322a2ac7-991f-42a5-babb-3de112e88a73","outcome":"completed","summary":"Created `result.json` and `sources.json` in the required path. All checks passed; result size is 53,229 bytes.\n\nHeld-out, 512 seeds:\n\n- vs V10: **+0.1594 ± 0.0271 SE**\n- vs RS2: **−0.0211 ± 0.0132 SE**\n- Zero halts; peak afterSwap gas: **202,391**\n\nNo demonstrated improvement over RS2; no board claim.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":4473856,"inputTokens":63830,"model":null,"outputTokens":20170,"runtime":"codex","turns":41,"wallClockMs":2344033}},{"artifacts":[{"bytes":1080,"hash":"23fe325164208469130356d04ac01e63984b8c5342612f11fea8bbc5f9eb72a6","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e02-search-arbside/items/b/result.json"},{"bytes":15,"hash":"bee7a88039d6c7375b5ec2d8eb062c1766a9113ff51c2a15c5290d27e4d8841d","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e02-search-arbside/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"73d25b5e0857cef5","findings":[],"hash":"d41d68eb3ac8b569eb52a92d6707f4dfbf2533b53b40828106368989d834af4a","nodeId":"1907ca4d-6bb6-4ad8-b921-4f795b71e5b6","outcome":"completed","summary":"Created and JSON-validated the required deliverables:\n\n- [result.json](/home/imd-worker/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/1907ca4d-6bb6-4ad8-b921-4f795b71e5b6/artifacts/goal/batches/e02-search-arbside/items/b/result.json)\n- [sources.json](/home/imd-worker/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/1907ca4d-6bb6-4ad8-b921-4f795b71e5b6/artifacts/goal/batches/e02-search-arbside/items/b/sources.json)\n\nThe recorded paired result is negative; incomplete required checks are explicitly marked unavailable rather than invented.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1570304,"inputTokens":84877,"model":"gpt-5.6-terra","outputTokens":16458,"runtime":"codex","turns":5,"wallClockMs":727435}},{"artifacts":[{"bytes":37720,"hash":"7bb8555923371ee112ef8f143add58d1c6544a5efb2e2372b53866f93dc0333f","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e05-confirm-rs/items/a/result.json"},{"bytes":1502,"hash":"4fc5f9e6c5ce010e44a1781645a185ee22b6a8c30f49c1409aa9131eb5938bb4","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e05-confirm-rs/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"8ad841cd6518a96e","findings":[],"hash":"d6b52381276f39ef260a7568bcd21253b949b37b2979fde2eb1dd6b5a29be9b3","nodeId":"499b0d47-a537-4bb8-b35d-8372ba9146ae","outcome":"completed","summary":"Confirmed all 2,000 seeds: RS1 gained **0.0722155 vs V10** (SE 0.0085265) and **0.2101262 vs STACK**. Zero OOG across all arms; all checks passed.\n\nCreated [result.json](artifacts/goal/batches/e05-confirm-rs/items/a/result.json) and [sources.json](artifacts/goal/batches/e05-confirm-rs/items/a/sources.json).","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":10052352,"inputTokens":141388,"model":null,"outputTokens":37300,"runtime":"codex","turns":88,"wallClockMs":5889306}},{"artifacts":[{"bytes":55770,"hash":"65508f4d2497d3494469c7b0919d61a5b1b71801a025d696d6c19567835eda27","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e04-band-transport/items/b/result.json"},{"bytes":378,"hash":"38f0413e96f26fb03df8d11a33733827637a15062a3c3cc3343cf952fb147f62","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e04-band-transport/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"803eeae3d8b63de3","findings":[],"hash":"d80eda75b03620c2b5f405870c7ea2d1513d90db30ba81837f27bcdbe6f95338","nodeId":"858aaade-e568-4b3f-aaba-d810d5a25370","outcome":"completed","summary":"Retail displacement control did not beat V10. The candidate I froze is slightly worse on the held-out seeds, so there is no gain to report and no board claim.\n\nI tracked how far retail trades had pushed the pool's price since the start of each step. That displacement then moved both band endpoints of V10, and the endpoints were turned back into bid and ask fees. With every control set to zero the code is bit-identical to V10 (all edges equal on seeds 690000..690015).\n\n**Search:** I compared three structures:\n- **Translation:** shift both endpoints the same way.\n- **Width:** widen or narrow the band as displacement grows.\n- **Coupled:** 9 parameters, combining the two plus a few feedback terms.\n\nThe search used a CMA-ES I wrote in numpy, started from seed 406 and from zero intervention. I couldn't install the `cma` package: the sandbox blocked the install command. Each generation used a fresh 32-seed block in 690000..693999 against V10 on the same seeds. I stopped after 3 generations (39 runs, 807 s of the 20-minute cap) to leave time for the checks, so the search is short and not converged.\n- Shifting both endpoints loses in either direction: −0.27 to −0.45 at about ±0.02–0.05, and −49 at +0.5.\n- Widening loses up to −0.9.\n- Narrowing and the coupled structure stay within noise of zero.\n\n**Recheck on 694000..694255 (256 seeds):** the top two were both negative.\n\n| Candidate | Structure | Search block | Recheck |\n|---|---|---|---|\n| A (`43e31eb0…`) | width | +0.071 | −0.061 |\n| B (`d11fe36b…`) | coupled | +0.051 | −0.037 |\n\n**Held-out, run once on 695000..695511:** I froze B (sha256 `d11fe36b99e607fefacdca7ff7875ea24c02063e27c53a705928d0ec13bcd4ad`).\n- **Paired vs V10:** n=512, mean −0.0407, SE 0.0202 (sample SE). Worst seed was 695235 at −1.48.\n- **Retail edge:** +0.728 ± 0.021.\n- **Arb edge:** −0.768 ± 0.009. Retail plus arb equals the total, because the arb/retail split is rebuilt from step prices and fees as in V10, not counted by the simulator.\n- **Gas:** afterSwap peaked at 199,295 on held-out and 203,113 in the search, under the 235k aim. There were 0 out-of-gas halts and 0 other halts in every run, and no seeds were dropped. afterInitialize peaked at 220,959, reported separately.\n- **Validation:** the frozen Solidity passes `amm-match validate`. I checked V10's sha256 and STACK's code hash, but did not run STACK or any seed at or above 5,000,000.\n\nElapsed time was roughly 70–75 minutes, so I missed the brief's 55-minute target. Recheck and held-out took longer than planned (about 2 minutes for every 256 seeds per arm), which is why I cut the search short.\n\n`result.json` is about 56 KB, under the 64,000-byte limit, and both files parse. It holds the code, parameters, all source files, the search log, seed ledger and gas and halt counts per arm. The repository root has some untracked dotfiles and IDE folders (`.bashrc`, `.claude/`, `.idea`, etc.) that I didn't create; I left them alone.\n\nFiles are in `artifacts/goal/batches/e04-band-transport/items/b/`:\n- result.json\n- sources.json — two quotes: one from the V10 artifact, and one from the pinned repo's `AMMStrategyBase.sol` that I checked against the live page.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1456581,"cost":{"source":"runtime","usdMicros":1474593},"inputTokens":2046,"model":"claude-opus-5-5","outputTokens":29958,"runtime":"claude","turns":47,"wallClockMs":1969212}},{"artifacts":[{"bytes":1348,"hash":"a4df8d8f800a5ec3e0e0f4c529083a9598592699dbc5cea71122a0207d5d44b7","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e03-horizon/items/a/result.json"},{"bytes":16,"hash":"0f882b8a19cb14e593389c74cb5333866136259fe34e2214ce93f14f1a4e47fe","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e03-horizon/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"79953a27daf74ea7","findings":[],"hash":"d93c2cd5c5058630e083cc28e7aa2b8dabce2a382fd66681ae827d0a776b09bf","nodeId":"15edc354-2059-4a1c-a365-1abaf3554e24","outcome":"completed","summary":"I couldn't run item \"a\": the setup script fails on this machine, so no simulations were run and n = 0.\n\n**Where it broke:** `scratch/setup.sh` line 6, `uv venv --python 3.12 .venv`, failed with `scratch/bin/uv: cannot execute binary file`. This machine is macOS on arm64, but the script assumes Linux x86_64. Both the `uv` it downloads and the pinned simulator wheel `amm_sim_rs-…-manylinux2014_x86_64` are Linux x86-64 builds. The wheel's sha256 did check out. There's also no Rust toolchain here to build the simulator from source.\n\n**Other details:**\n- `git clone` was blocked because the sandbox won't let git write `.git/config`, so I downloaded the source tarball at the pinned commit `6b6921f8…` instead.\n- Nothing after setup was done: the CH check on seeds 0..999, the STACK hash check, the CMA-ES search, the re-check and the held-out run. None of the seed blocks were touched, so the confirm block 5028000..5030000 is still unused and available.\n\nTo get a result, this item needs to go to a Linux x86_64 worker, which is what the setup expects.\n\nI wrote two files, both valid JSON, in `artifacts/goal/batches/e03-horizon/items/a/`:\n- **`result.json`** (1348 bytes): `blocked` = {step, error}, n = 0, and the result fields left null.\n- **`sources.json`**: `{\"sources\": []}`, since I relied on no outside sources.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":186428,"cost":{"source":"runtime","usdMicros":321339},"inputTokens":17,"model":"claude-opus-5-5","outputTokens":4670,"runtime":"claude","turns":9,"wallClockMs":69218}},{"artifacts":[{"bytes":31492,"hash":"d57947fc0468aa28824a13f4a242a83d33ce0db3de1063de7980688992fe0724","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e09-confirm-act/items/a/result.json"},{"bytes":1205,"hash":"e0db9cb771f55e4ea8f8d104e3e0ec09551dc49b6e460115d0b6c709e173d076","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e09-confirm-act/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"a7ac9f7a7687c25e","findings":[],"hash":"dad10076ca079aabea9e5122ec38f368ddce34e73ed91edb092b43e0dd796e5d","nodeId":"66856a75-8a99-4573-b0f2-a2d94897a3ef","outcome":"completed","summary":"The candidate (sha256 `0c3836cd…2484`) is confirmed unchanged on the fresh seeds 5112000..5113999 (n=2000). It is valid: zero out-of-gas halts and no other errors in any arm. But it beats the reference strategy RS2 by only +0.076 per seed and STACK by +0.40, far short of the roughly +5.0 the goal needs for 10th place.\n\n**Checks before the fresh seeds were opened**\n- All three code hashes matched: RS2, STACK and the candidate.\n- The CH calibration on seeds 0..999 gave a mean of 525.5258821780834, an exact match.\n- The run used the harness from the candidate's artifact unmodified: chunks of 20 seeds, gas counters reset and collected per chunk, each strategy run alone against VanillaStrategy.\n\n**Results, candidate minus baseline**\n\n| | vs RS2 (`paired`) | vs STACK |\n|---|---|---|\n| mean_diff | +0.0758 (se 0.0077) | +0.3998 (se 0.0136) |\n| retail edge delta | −0.519 | −0.155 |\n| arb edge delta | +0.595 | +0.554 |\n| worst seed | 5113497, −2.77 | 5112472, −2.74 |\n\n- **Gas:** the candidate's afterSwap peak is 204,576 (limit 250,000) and its initialization peak is 243,118.\n- **Mean edges:** candidate 528.311, RS2 528.236, STACK 527.912.\n- **RS2 vs STACK:** RS2 itself is +0.324 (se 0.0138) over STACK.\n\nresult.json also holds `sum_d` and `sum_d2` for pooling, per-arm gas counters, the full harness description and the commands.\n\n**One deviation from a single uninterrupted run:** my first attempt ran all three strategies in one process. The 10-minute tool limit killed it before it wrote any output or showed me any number. I then ran each strategy in two halves of 1000 seeds, with the same frozen code and the same seeds. The simulator is deterministic, so this involved no selection: every seed is in every arm and none was dropped.\n\n**Workspace:** I wrote only `result.json` and `sources.json` (6 quotes: the artifact hashes, the CH file, and the pinned config code) under `artifacts/goal/batches/e09-confirm-act/items/a/`. Both parse as JSON, and result.json is 31,492 bytes. The checkout and scratch runs are under `test/scratch/`. `git status` also lists untracked dotfiles in the repository root (`.bashrc`, `.gitmodules`, `.claude/` and others). I did not create these, and I left them alone.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":792476,"cost":{"source":"runtime","usdMicros":708398},"inputTokens":44,"model":"claude-opus-5-5","outputTokens":12609,"runtime":"claude","turns":26,"wallClockMs":1986516}},{"artifacts":[{"bytes":61282,"hash":"8b70ee003e3aefb48e4562dd909d60c0a1dc6dd6a67fb128709371d2d4851c79","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e01-mechanism-pilots/items/normalizer-state/result.json"},{"bytes":2665,"hash":"6f2ddc9401613ed4aa8ba4e07b831e39db602f63cf763c9818ba95cb30cd73e5","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e01-mechanism-pilots/items/normalizer-state/sources.json"}],"attempt":1,"bundleHash":null,"device":"7143d892ed24d728","findings":[],"hash":"dc066db500af3b01ee215b67be234bf8abc8e942dc0ce244540506370ea1449b","nodeId":"65c540be-1f6f-4e74-9d39-cd2a12d0d5f8","outcome":"completed","summary":"Created `result.json` and `sources.json`; both parse and meet size limits.\n\nThe 2,000-seed holdout lost **1.3756 points** versus STACK (SE 0.0458), with zero halts. Retain STACK. Attribution validation failed and is explicitly flagged in the report.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":17561344,"inputTokens":219380,"model":null,"outputTokens":65491,"runtime":"codex","turns":75,"wallClockMs":6033215}},{"artifacts":[{"bytes":33568,"hash":"9516e928f4f098cf37aeb756f7c301b509e341d7d7a6ad82b607156d7f6acf26","mediaType":"application/json","name":"decisions","path":"artifacts/goal/episodes/003/decisions.json"}],"attempt":1,"bundleHash":null,"device":"468e82a89b9bfe18","findings":[],"hash":"dc3d969e0d5fb744beff7c6fbf7e1c50a7adb3c57a663f0588997c0669716b08","nodeId":"70e97104-256a-46d9-9f65-2c52b81fc883","outcome":"completed","summary":"Episode 3 decisions are written to `artifacts/goal/episodes/003/decisions.json` (one JSON object, untracked as required). Nothing else in the workspace was changed; my scaffolding lives only in `test/scratch/`.\n\n**What the handed results showed**\n\n- Evaluator check: the harness is sound. STACK self-comparison is exactly zero on every seed, and edge reconciles to arb plus retail.\n- Censored-price V10 is the goal's first real gain: +0.137 (se 0.014) on 2,000 fresh seeds, 0 OOG, all of it on the arb side with retail down 1.14. Its public artifact carries the code and a reusable confirm harness.\n- Value-policy floor: +0.016 (se 0.0015), real but tiny. Other compositions lost.\n- Event-hazard was blocked by a non-x86 worker machine, so it is not a tried idea.\n- Share-fee search (requester 4b) and arb-side search (4d) both lost on held-out seeds. Both families are recorded as retired.\n- Board fit: leaders charge about 1.3 bps less, lean about zero, and their fees rise far less with retail volume and more with volatility than STACK's. Most of the 8.7 per-run gap to first place is per-unit edge at equal volumes, not volume.\n\n**What I spawned (7 batches, 14 items, 29 of 400 used)**\n\n- `e03-confirm-v10` a/b: the exact V10 file on two new fresh blocks, as the requester asked.\n- `e03-v10-floor`, `e03-v10-blend`, `e03-v10-retail` (a/b each): the requester's three build-on-V10 ideas, each screened on tuning seeds then confirmed once on its own fresh block.\n- `e03-restable`, `e03-horizon`, `e03-shadow` (a/b each): three new rule families on STACK from the design reports, searched with CMA-ES on common seeds, with held-out checks and a confirm only when the held-out gain clears 2 se.\n\nEvery brief fits under 3,000 characters with the verbatim setup script, carries every placeholder in every item, and names the result fields. Confirmation seed blocks 5008000 through 5035999 are allocated one per item and recorded in the notes; next free block is 5036000. No batch was cancelled. The episode wakes when the seven batches settle or after 120 minutes, and `finish` stays false.\n\n**Next episode** reads these 14 results plus the still-running normalizer-state and regime-search items, promotes anything over +0.1 with 0 OOG toward submission, and plans an integration wave combining confirmed V10 increments.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":5039024,"cost":{"source":"runtime","usdMicros":11233577},"inputTokens":770,"model":"claude-fable-5-1","outputTokens":91205,"runtime":"claude","turns":37,"wallClockMs":1134018}},{"artifacts":[{"bytes":3865,"hash":"123d1f05288c3ac72fe986f64e9c197a40c2c2df306a761c84ddf38d4c4f6091","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e01-mechanism-pilots/items/event-hazard/result.json"},{"bytes":20,"hash":"6c3b9f0390341dfd18635526c002291b374ba88078d4f87034c71c820e21474e","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e01-mechanism-pilots/items/event-hazard/sources.json"}],"attempt":1,"bundleHash":null,"device":"720122d0ca9f60ca","findings":[],"hash":"dd1dcb0c1ba15d9a174ad8b43b25a3a739b03266bee481a9d0f5a837123ae31c","nodeId":"53122c75-f246-4d1b-84d0-983f5b379645","outcome":"completed","summary":"Setup failed with exit 133: Rosetta could not open `/lib64/ld-linux-x86-64.so.2`.\n\nSaved validated [result.json](artifacts/goal/batches/e01-mechanism-pilots/items/event-hazard/result.json) and [sources.json](artifacts/goal/batches/e01-mechanism-pilots/items/event-hazard/sources.json). Result is blocked, with `paired.n=0`; calibration and strategy testing did not run.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":163456,"cost":{"source":"estimated","usdMicros":143933},"inputTokens":23956,"model":"gpt-6.1-sol","outputTokens":6333,"runtime":"codex","turns":3,"wallClockMs":169647}},{"artifacts":[{"bytes":45962,"hash":"35940e07dcccd0ae649abd91bdc5e759537329f5e6992f149c271f8586507e33","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-vanilla-quote/items/b/result.json"},{"bytes":2109,"hash":"72925692b36b9899f720516300b06d805d4924abd67fc23b285cdedcd116bfdf","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-vanilla-quote/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"9ea940b94f2f7e92","findings":[],"hash":"ddfc95d60d1dac461d8ff288a119a745b786598415252ef79e8523e32f8894d9","nodeId":"cc6b5bf2-71dc-42fb-96f1-a6d0ae93fb47","outcome":"completed","summary":"Created and validated [result.json](artifacts/goal/batches/e08-vanilla-quote/items/b/result.json) and [sources.json](artifacts/goal/batches/e08-vanilla-quote/items/b/sources.json).\n\nHeld-out gain: **+0.2230 vs RS2**; fresh confirmation: **+0.5514 vs STACK**. Zero OOG events; gas limits passed. The improvement falls below the roughly +5 goal.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":7197312,"inputTokens":75324,"model":null,"outputTokens":54958,"runtime":"codex","turns":42,"wallClockMs":3620607}},{"artifacts":[{"bytes":53072,"hash":"78a7bec26a29a2c152ce3f9a9d558c4587fcc5857beabc98f16b1de9592e847c","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-vol-flow/items/a/result.json"},{"bytes":1805,"hash":"7b78ae748fd2da8d1b324b1b8b0a34a8bb4642cafabc1296654ef2272670902f","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-vol-flow/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"964f2d8baaf7b03b","findings":[],"hash":"deca203bf45e1d7270ec17d1a57bb7c8c1c8bfe0068ecd87e04d4aa0ea2cd8b5","nodeId":"61157f77-f4c3-4f65-b6dd-368e83707838","outcome":"completed","summary":"Wrote and validated [result.json](artifacts/goal/batches/e07-vol-flow/items/a/result.json) and [sources.json](artifacts/goal/batches/e07-vol-flow/items/a/sources.json).\n\nHeld-out delta: **−0.0372 edge (SE 0.0175)** versus RS2 across 512 seeds. Retain RS2.\n\nParity passed, zero halts occurred, and gas stayed within limits.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":5767808,"cost":{"source":"estimated","usdMicros":1774140},"inputTokens":76534,"model":"gpt-6.1-sol","outputTokens":46751,"runtime":"codex","turns":43,"wallClockMs":2676613}},{"artifacts":[{"bytes":63094,"hash":"7bc9b2a1e0d7cc591dae17108a0ba0bc067c013a203ab4ac7c1ef22a9861e8af","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e04-transition-policy/items/b/result.json"},{"bytes":1002,"hash":"2e76082db67a73af1419078cffacfc6f0384fbe5812a1e1dcbfc27117b9efe3d","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e04-transition-policy/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"79606c6a6e3585fb","findings":[],"hash":"e07005706689a224aa07c774a81cc5106a22ad46672ae1f68ff782785efbf9b4","nodeId":"7c528a65-5809-4f35-aaea-30ff00812a06","outcome":"completed","summary":"Created and checked `result.json` and `sources.json` in the requested directory.\n\nHeld-out result: **+0.00279 ± 0.00345 SE** versus V10 across 512 seeds—no demonstrated improvement. Zero halts; peak afterSwap gas **221,233**. No board claim.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":8008320,"inputTokens":80383,"model":null,"outputTokens":45615,"runtime":"codex","turns":32,"wallClockMs":2442049}},{"artifacts":[{"bytes":23028,"hash":"8a5087a9c8962d7628cf4c438c94d95a6b4900a06130cbc6241c11e376e7c908","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e03-horizon/items/b/result.json"},{"bytes":15,"hash":"73608e3346e331760ac29f17144976922e84678fed8a2eb7cc66f6ef0e89a33c","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e03-horizon/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"79debe04aa697080","findings":[],"hash":"e13afa959a7c147c793416e001ef005afdafecf496f032e5bbbaf6ae2bf8f355","nodeId":"a58b953e-bf63-494d-a2c1-2713613eb9a6","outcome":"completed","summary":"The horizon-hazard add-on did not beat STACK. On the held-out seeds it scored **−0.046 ± 0.016** against STACK, so it failed the \"> 2 se and ≥ +0.05\" gate. The confirm field is null and the fresh block 5030000..5032000 was never run.\n\n**What was checked:**\n- **STACK hash:** the downloaded code matches `2eaafc79…19`.\n- **Equivalence:** with c1=c3=0 the modified contract gave exactly the same edge as STACK on seeds 580000..580031 (largest difference 0.0).\n- **Validation:** the frozen candidate passes `amm-match validate`; its sha256 is `b44c06ce…13f7`.\n\n**Search:** numpy CMA-ES (population 10, mu 5, seed 2) on the 64 CRN seeds 580000..580063, scored by mean paired difference against STACK.\n- My first parameter ranges were far too wide: any c1 of 0.5 or more lost 340 to 376. I kept those 12 runs as a scale probe, narrowed the ranges (c1 ≤ 0.1, c3 ≤ 0.3, c4 ≤ 20 bps) and restarted.\n- All 16 runs in the narrowed ranges were negative. The best, at −0.10, was the one closest to having no add-on at all.\n- **Re-check (581000..581063):** the top 3 scored −0.013 ± 0.026, −0.17 and −0.21.\n- **Held-out (590000..590127):** worst single seed −0.55. Arb edge changed by +0.021 and retail edge by −0.067, so the loss comes from retail.\n- **Gas:** peak 233,969 with 0 out-of-gas, reverts or halts (STACK peaked at 209,193 on the same seeds).\n\n**Where I fell short of the brief.** The simulator ran at about 0.7–1.3 seconds per seed per strategy on this machine, so I cut steps to finish in time. All of these cuts are listed in `notes`:\n- The CMA search ran about 19 minutes instead of 30, which is under 2 generations.\n- The re-check used 64 of the planned 256 seeds, and the held-out run 128 of 512.\n- I skipped the 1000-seed check that the ChengHua926 reference strategy gives 525.526.\n- The arb/retail split is an approximation. For each step I rebuilt the arb trade from the previous step's spot and fees and the fair price, holding the pool constant at its starting 1e6 and ignoring growth from collected fees.\n\nI relied on no outside sources, so `sources.json` is `{\"sources\": []}`.\n\nFiles are in `artifacts/goal/batches/e03-horizon/items/b/`:\n- `result.json` (about 23 KB)\n- `sources.json`","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1074783,"cost":{"source":"runtime","usdMicros":913877},"inputTokens":50,"model":"claude-opus-5-5","outputTokens":17535,"runtime":"claude","turns":29,"wallClockMs":2666292}},{"artifacts":[{"bytes":34030,"hash":"734526bd5957cbe3b3bc137e8c2a263624d324bfed184a1ffbfffd71b69e876a","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e09-confirm-sigma/items/a/result.json"},{"bytes":1081,"hash":"73c69f9b12bf25d720dd16f3844ddb152a642c9e8cf8c1960c1c5a6a4d2337c8","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e09-confirm-sigma/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"a6bc9bc7471a6711","findings":[],"hash":"e5c27667399dbaa6600aea52c446629ed9d4a8e1935fc340ef5ff7c7539a0378","nodeId":"17d00239-e27c-46a7-84b5-bdde7dde2d07","outcome":"completed","summary":"The candidate passed confirmation on its fresh seeds. All three arms finished every seed with no out-of-gas calls or other halts, so the result is valid.\n\n**What was checked first**\n- The four artifact JSONs match their IDs, and the candidate, RS2 and STACK code files match their expected sha256 values. The candidate (sha256 `014ad7bd…0cfca`) was run exactly as downloaded.\n- The CH calibration on seeds 0..999 gave a mean edge of 525.5258821780835, an error of 1.1e-13 against the expected value (tolerance 1e-6).\n\n**Fresh seeds 5108000..5109999 (n=2000).** Each arm ran alone against VanillaStrategy using H's harness unchanged, in chunks of 20.\n\n| Comparison | mean_diff | se | wins/losses | retail Δ | arb Δ |\n|---|---|---|---|---|---|\n| candidate − RS2 (`paired`) | **+0.1166** | 0.0131 | 1188/812 | +0.300 | −0.184 |\n| candidate − STACK | **+0.4405** | 0.0174 | 1469/531 | +0.670 | −0.230 |\n| RS2 − STACK | +0.3239 | 0.0142 | 1419/581 | +0.370 | −0.046 |\n\n- **Gas:** the candidate peaked at 203,135 on afterSwap and 243,121 on initialization. All three arms had 0 out-of-gas calls and 0 other halts, including the Vanilla side.\n- **Worst seed vs RS2:** 5109332, at −2.69.\n- **Against the goal:** +0.44 over STACK is far short of the roughly +5.0 needed for 10th place. At the 0.65 transfer rate from the brief, it would be about +0.29 on the board.\n\nMy first try ran the full 2000-seed candidate arm in one go. It hit the 10-minute command time limit and was stopped before any output was written, so no fresh-seed results were seen. I then ran every arm as five 400-seed segments covering the same seeds. No seeds were dropped and nothing was retried after results were seen.\n\n`result.json` also has per-arm counters, `sum_d` and `sum_d2` for pooling, the candidate code, and the driver and analysis scripts with the exact commands. `sources.json` quotes the four artifacts and the CH source file. Both files parse, and `result.json` is 34 KB, inside the 64 KB limit.\n\nFiles are in `artifacts/goal/batches/e09-confirm-sigma/items/a/`:\n- result.json\n- sources.json","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":653531,"cost":{"source":"runtime","usdMicros":672127},"inputTokens":36,"model":"claude-opus-5-5","outputTokens":12215,"runtime":"claude","turns":22,"wallClockMs":2943451}},{"artifacts":[{"bytes":56595,"hash":"45f0239e4aeaa92c3ea5bb60e524bf65e45cf232852010bd168a12ee92431d83","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-public-search/items/entrants/result.json"},{"bytes":2521,"hash":"13059a42fee39379d5095430a12bdfbb3c2d7fca177a1beeb82c03eccefabed1","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-public-search/items/entrants/sources.json"}],"attempt":1,"bundleHash":null,"device":"8a38929b31c716ff","findings":[],"hash":"e628915aec20dca422dcd7be5a352401cca29050af3813fbc4d9ab98633a1d9a","nodeId":"e03ccd93-25d8-4138-9c60-a89db04b3f67","outcome":"completed","summary":"Created both required JSON outputs. Surveyed all 30 entrants, validated six Solidity files, and completed the prescribed comparisons.\n\nBest public file trailed RS2 by **1.838 ± 0.076 SE** over 256 seeds. Zero OutOfGas calls. CH calibration matched exactly, and all 13 source quotations passed live checks.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":5303808,"inputTokens":182275,"model":null,"outputTokens":24220,"runtime":"codex","turns":8,"wallClockMs":647280}},{"artifacts":[{"bytes":42667,"hash":"1b8e8ca5d0da1f0071a9ae18505d6cbff902b88b2fbc34e523afbd212a9a26ce","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e08-rs2-port/items/a/result.json"},{"bytes":1025,"hash":"e68ad3b2446b356cd5c32a20518c521594a25ffbee2a7c076f0d03a4c6cc4d33","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e08-rs2-port/items/a/sources.json"}],"attempt":3,"bundleHash":null,"device":"aca5d7170d77c721","findings":[],"hash":"e69af01f620a61fe0360365d1b2a971459ea413c01384ebc893ace3b35811fda","nodeId":"11962e58-b3a7-4802-b28c-d84384ec0541","outcome":"completed","summary":"I ported RS2 to Python and its fees match the deployed contract: across 440,220 callbacks no fee differed by more than 0.01 bps, and the largest difference was 3.8e-9 bps. No fixes were needed.\n\n**The port**\n- RS2's code matches its stated sha256 (`f24b6ca1…eaf2`).\n- `strat_init` and `strat_after` both compile with `numba.njit` and return `(bid_fee, ask_fee)` as fractions.\n- `S` is float64[40]; indices 0–18 hold the contract's slots, with the two packed slots split into separate entries.\n- `TH` holds 102 constants in source order, named in `TH_NAMES`: the 39 declared constants, then every inline literal. A literal used in several places gets one entry per place, so each can be varied on its own. Raising `BASE_FEE` by 1 bp changes the returned fees, so `TH` is really being read.\n- The Solidity's control flow, caps and clamps are kept as written. The places where rounding or the integer square root could matter are listed under `deviations` in the result.\n\n**Differential test**\n- **Setup:** RS2 was deployed through the repository's own EVM adapter (solc 0.8.24, pyrevm), and the EVM and the port were fed identical inputs. There were 220 sequences of 2,000 callbacks, and fees were compared after every callback.\n- **Test market:** prices follow a random walk; the first trade in a step arbitrages to the edge of the fee band, then come lognormal retail fills, 0–4 trades per step, and 2–11 step gaps 15% of the time. The fees the EVM returned priced the next trade.\n- **Results:**\n  - mean difference 7.8e-12 bps;\n  - share above 0.01 bps: 0;\n  - share above 1e-6 bps: 0;\n  - first divergence: none.\n- **Limits:** the market is a single pool with no competing vanilla pool and no router split, so every retail order hits RS2. Fees in it run high (median 36 bps, about 290 bps at the 95th percentile). That exercised every clamp and branch, but its edge numbers say nothing about the real board.\n\n**Speed:** about 0.4 µs per callback in a compiled loop (that time includes the market maths), against about 109 µs per EVM call, roughly 270× faster. Plain Python runs about 30 µs per callback, and the first call takes about 4 s to compile.\n\n**Not done:**\n- I didn't run the CH calibration check (mean edge 525.5258821780834 on seeds 0–999). It belongs to the match setup, and this item runs no match.\n- I didn't measure gas.\n\nThis time the checkout, venv and every test file stayed under `test/scratch/`, which is what got the earlier attempts rejected. The dotfiles that `git status` shows at the root are `/dev/null` devices the sandbox mounts, not files I created. Both output files parse as JSON, the result is 42.7 KB of the 60 KB limit, and I re-fetched each source URL and found its quote.\n\nFiles are in `artifacts/goal/batches/e08-rs2-port/items/a/`:\n- `result.json`\n- `sources.json`","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1687239,"cost":{"source":"runtime","usdMicros":1775888},"inputTokens":54,"model":"claude-opus-5-5","outputTokens":39744,"runtime":"claude","turns":38,"wallClockMs":522409}},{"artifacts":[],"attempt":2,"bundleHash":null,"device":"8b35536ee4821baa","findings":[],"hash":"e71fda3eab6a324b0999cf3760014b1cca6b4908c20a7f9e8d793545bab81ab5","nodeId":"b8118b97-cf85-4986-9047-0aec9941505f","outcome":"failed","summary":"Source bundle is 22940306 bytes of new work; the upload limit is 8388608 bytes (8 MiB) of new work. Remove unnecessary generated dependencies/caches or redundant package archives from your changes and rebuild the requested export. Preserve required source, runtime assets, declared deliverables and accepted/protected dependencies. Do not silently omit required work. Largest changed source files: [{\"path\":\"scratch/bin/uv\",\"bytes\":37512936},{\"path\":\"scratch/tmp/uv-x86_64-unknown-linux-gnu/uv\",\"bytes\":37512936},{\"path\":\"scratch/solcx/solc-v0.8.24\",\"bytes\":15020760},{\"path\":\"scratch/amm_sim_rs-0.1.0.post1-cp310-abi3-manylinux2014_x86_64.manylinux_2_17_x86_64.whl\",\"bytes\":727586},{\"path\":\"scratch/tmp/uv-x86_64-unknown-linux-gnu/uvx\",\"bytes\":330440},{\"path\":\"scratch/rs1.json\",\"bytes\":55855},{\"path\":\"scratch/v10.json\",\"bytes\":55068},{\"path\":\"scratch/stack.json\",\"bytes\":21806}].","treeHash":null,"usage":{"cachedInputTokens":3073664,"inputTokens":135980,"model":"gpt-5.6-luna","outputTokens":21748,"runtime":"codex","turns":13,"wallClockMs":939239}},{"artifacts":[{"bytes":685,"hash":"2772468d366910df5411e27059dcfb06f9fc706472c1939702f4f7ae702992a2","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e05-rs-search/items/b/result.json"},{"bytes":16,"hash":"0f882b8a19cb14e593389c74cb5333866136259fe34e2214ce93f14f1a4e47fe","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e05-rs-search/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"827152cce766ca0d","findings":[],"hash":"e7822e8aa951b31e4365a9461b1e85010e47cbad49df92af944376c896c8b922","nodeId":"087b584a-7be5-4e2a-a520-0e451d33e1f5","outcome":"completed","summary":"I couldn't do the task: the setup failed at its first step, so no search or measurement ran (n 0).\n\nThe clone of `github.com/benedictbrady/amm-challenge` failed with `Proxy CONNECT aborted`. `curl` to `github.com` and `api.imd.fun` failed the same way (exit 56). So the repo, the simulator wheel and the RS1 and V10 artifacts were all unreachable. I didn't try to get around the proxy.\n\nI wrote `result.json` with `blocked` set to the failed step and that error, `evaluations` 0, and null for the result fields. `sources.json` is `{\"sources\": []}`. Both parse as JSON, both are under `artifacts/goal/batches/e05-rs-search/items/b/`, and nothing else was written. I did not write `.imd-blocked.json`, since this is a network failure on this machine rather than a question for the requester.\n\nTo rerun, the sandbox needs to allow `github.com`, `api.imd.fun`, and the package and Python hosts that `setup.sh` fetches from. Those include the `uv` release, the `amm-sim` release wheel, PyPI and the solc download host.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":90172,"cost":{"source":"runtime","usdMicros":68349},"inputTokens":10,"model":"claude-sonnet-5-5","outputTokens":1411,"runtime":"claude","turns":5,"wallClockMs":29216}},{"artifacts":[{"bytes":59316,"hash":"d1258b60f44e32b5b28a08fd1650b9a4da24a7214e53341afe9cbd484ec69412","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e05-design-impl/items/tail-a/result.json"},{"bytes":3359,"hash":"bd22245e132d4a8f3eb6a7186f8f749c6d4075a5c5de2330d0f2e487e7b0be78","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e05-design-impl/items/tail-a/sources.json"}],"attempt":1,"bundleHash":null,"device":"8687b633e8d497b9","findings":[],"hash":"eadd643c160667f74b0c0c897e86fd861972ca419c0b6cfe2d6fc1312ec96a2a","nodeId":"655797cd-bf6e-4c3f-a5ac-68d4b3799a4c","outcome":"completed","summary":"Saved [result.json](artifacts/goal/batches/e05-design-impl/items/tail-a/result.json) and [sources.json](artifacts/goal/batches/e05-design-impl/items/tail-a/sources.json).\n\nEnabled DAR lost 0.607 edge on 512 held-out seeds (SE 0.031). Identity retained. Zero OOG; final checks passed.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":17230208,"inputTokens":203219,"model":null,"outputTokens":80436,"runtime":"codex","turns":62,"wallClockMs":4206104}},{"artifacts":[{"bytes":57322,"hash":"1ba8eaaf41f6b59346ab9030d99b2c6dd8b9df0dc75e815667445cd891a5729c","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e06-rs-side/items/b/result.json"},{"bytes":830,"hash":"bcdf1570af663eb305be07de33b0b6fb5c16def2b1d6f0b90cf60abacbeb184c","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e06-rs-side/items/b/sources.json"}],"attempt":1,"bundleHash":null,"device":"8a05ec1ea94411ea","findings":[],"hash":"f28573b880fb7ca7258a3cfb215a3eda4c8516d1e9f87bff8bae2ed1e6e0c354","nodeId":"af4a6177-c99c-47cd-9155-38a86ae0f201","outcome":"completed","summary":"The per-side retail split doesn't help: on held-out seeds the frozen strategy came out slightly below RS2, by −0.025 (se 0.014). Both output files are written and parse as JSON: `artifacts/goal/batches/e06-rs-side/items/b/result.json` (57 KB, under the 64 KB limit) and `sources.json`.\n\n**Setup checks (all passed)**\n- The CH calibration on seeds 0..999 gave mean edge 525.5258821780834, an exact match.\n- The sha256 of RS2, V10 and STACK all matched the brief.\n- RS2's generator rebuilds RS2 byte-for-byte, and `side_mix` 0 gives RS2's sha256.\n- The frozen strategy passed `amm-match validate`.\n\n**Mechanism.** The strategy keeps a decayed share of its own fills that were retail buys, weighted by the posterior. It is stored in unused top bits of an existing storage slot, so the init function is unchanged (init gas 243,093, under 245,000). Each side's lambda input moves by `side_mix` toward `min(2·share, side_cap)·lambda`, and each side's mid fee is recomputed from its own lambda. I took \"retail buy\" to mean the trader buys X, which is the ask side; the brief doesn't define it.\n\n**Search.** CMA-ES over the 5 parameters, on seeds 870000..870511. It ran 8 generations (80 evaluations, 1447 s) before the 25-minute cap. At about 180 s per generation on this machine it did not converge. No evaluation halted, and the highest afterSwap gas was about 205k.\n\n**Recheck** on 874000..874255, top 3 vs V10: +0.171, +0.167 and +0.139 (se about 0.03 each). I froze the first: `side_mix` −0.239, `side_retention` 0.9999, `side_cap` 2.26, `mix` 0.242, `size_scale` 1.84 (sha256 `01c941bf…f76a`).\n\n**Held-out** on 875000..875511, 512 seeds, frozen before it ran:\n\n| Comparison | Mean diff | se | Retail edge Δ | Arb edge Δ |\n|---|---|---|---|---|\n| Frozen vs V10 | +0.145 | 0.020 | +0.93 | −0.78 |\n| Frozen vs RS2 | −0.025 | 0.014 | −0.59 | +0.56 |\n| RS2 vs V10 (same seeds) | +0.170 | 0.025 | | |\n\n- **Gas:** afterSwap peaked at 202,931, with no out-of-gas or other halts.\n- **The side parameters did nothing:** scores were within noise for `side_mix` anywhere from −0.5 to +1, and the leading points had mixed signs.\n- **`side_cap` above 2 has no effect,** since twice the share can't exceed 2, and the search stayed there.\n- **Gains come from RS2's own blend:** runs with `mix` 0 scored about zero whatever `side_mix` was.\n- **No STACK confirmation:** no seeds at or above 5,000,000 were used, so this says nothing about the board and is far from the roughly +5 the goal needs.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1231340,"cost":{"source":"runtime","usdMicros":1243110},"inputTokens":46,"model":"claude-opus-5-5","outputTokens":21944,"runtime":"claude","turns":25,"wallClockMs":2355471}},{"artifacts":[],"attempt":1,"bundleHash":null,"device":"9749780078a23bd9","findings":[],"hash":"f76d1f42a4f3c7fae9a16e1331ae4eaa33604657820b87487fa61745d56810fe","nodeId":"03577525-e700-4e21-92a5-e2467ab310e2","outcome":"failed","summary":"artifact upload failed: result (524)","treeHash":null,"usage":{"cachedInputTokens":1122601,"cost":{"source":"runtime","usdMicros":910485},"inputTokens":49,"model":"claude-opus-5-5","outputTokens":15024,"runtime":"claude","turns":27,"wallClockMs":3436284}},{"artifacts":[{"bytes":11865,"hash":"4a7795e8b9dc9b22059c626e2e214e8e1f19a7c21adcabf940eee1bf45190a71","mediaType":"text/markdown","name":"merge","path":"artifacts/goal/roots/1/02/result.md"}],"attempt":1,"bundleHash":null,"device":"b29f0968f2df07a0","findings":[],"hash":"fb8a8c053335743ba7d4d6372c6b9fd140d375e9c4d4e2642abfd71d470dae16","nodeId":"5b8c9a80-55fc-4e05-82c2-04ffd6b62df8","outcome":"completed","summary":"Merged all 25 results into [result.md](</home/seat/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/5b8c9a80-55fc-4e05-82c2-04ffd6b62df8/artifacts/goal/roots/1/02/result.md>).\n\n- Size: 11,865 bytes\n- All 25 inputs cited\n- Blocked, negative, provisional, design-only, and conflicting results retained\n- No unsupported STACK confirmation claim added","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":724864,"inputTokens":98667,"model":null,"outputTokens":8052,"runtime":"codex","turns":4,"wallClockMs":165176}},{"artifacts":[{"bytes":17993,"hash":"5948125ea3fbf18aaa00897e21997b34c857d93c829d3a31387ce16d7c089d8d","mediaType":"application/json","name":"decisions","path":"artifacts/goal/episodes/001/decisions.json"}],"attempt":1,"bundleHash":null,"device":"35c52a5b502e847c","findings":[],"hash":"fc96e42b6249dce041956457a5062d0b5282efca764be618d79af99303bb2ba3","nodeId":"8c2ef96e-91a6-4e21-aee9-4af26f1805bb","outcome":"completed","summary":"Created and validated [decisions.json](/home/identitymd5/.identitymd/work/e64e1149-e582-4058-afdd-d41f6f53789c/8c2ef96e-91a6-4e21-aee9-4af26f1805bb/artifacts/goal/episodes/001/decisions.json).\n\nIt requests seven worker items with separate confirmation blocks, preserving 393 items. JSON, brief limits, seed allocation, and setup syntax checks passed. The file remains untracked for upload.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":506112,"cost":{"source":"estimated","usdMicros":1606842},"inputTokens":42913,"model":"gpt-6-astra","outputTokens":13432,"runtime":"codex","turns":5,"wallClockMs":393109}},{"artifacts":[{"bytes":62854,"hash":"0e40b36dbb85acbe3d24c397b87ba7baba4bff851c64a2ef80e785264f2653e4","mediaType":"text/markdown","name":"merge","path":"artifacts/goal/roots/1/05/result.md"}],"attempt":1,"bundleHash":null,"device":"b41d844dba698308","findings":[],"hash":"fdbd13362c8a4019ee0bf99f75bbfc4ee8c9219c28aa66e1408c39ee97cf4884","nodeId":"35864dfd-6046-4cff-ac26-29094411a388","outcome":"completed","summary":"Created [result.md](artifacts/goal/roots/1/05/result.md), merging all 24 inputs with attributed figures, disagreements, and evidence limitations.\n\nChecked: 62,854 bytes, valid embedded JSON, and consistent code hashes. No result establishes the target gain.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":1426304,"inputTokens":111295,"model":null,"outputTokens":22388,"runtime":"codex","turns":4,"wallClockMs":486489}},{"artifacts":[{"bytes":47035,"hash":"d7a4c02c6379144f4225a247e5e5263fcc08281fd41d23dfff49529091238076","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e07-fork-mine/items/rest/result.json"},{"bytes":1608,"hash":"2b3b3287649db1b9aaf51241865415431fa2adf399d296622544d72c8cc84969","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e07-fork-mine/items/rest/sources.json"}],"attempt":1,"bundleHash":null,"device":"983d7731bb482b1b","findings":[],"hash":"fe4777432b11a5d895e42e846c5770d1db30032d33f1709d1b6b721e39abe158","nodeId":"0d13dc66-2470-479b-a469-f7c10bccac48","outcome":"completed","summary":"Created [result.json](artifacts/goal/batches/e07-fork-mine/items/rest/result.json) and [sources.json](artifacts/goal/batches/e07-fork-mine/items/rest/sources.json). Both pass JSON and size checks.\n\nNo qualifying strategy was found in the accessible forks. Calibration matched exactly; all simulations had zero OOG calls.\n\nTwo forks were inaccessible: Git reported “could not read Username.” Their eligibility remains unknown.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":977152,"inputTokens":20854,"model":null,"outputTokens":11991,"runtime":"codex","turns":7,"wallClockMs":659138}},{"artifacts":[{"bytes":19174,"hash":"35e171ca43c0abf211a6e77900ba7b9563fd649f22cff94fb19d442b1c3556f6","mediaType":"application/json","name":"decisions","path":"artifacts/goal/episodes/008/decisions.json"}],"attempt":1,"bundleHash":null,"device":"3f6a9bdd601cb99f","findings":[],"hash":"fe524ea97a78b31bda6e5a6c4d1ef50b74926ca2ee55f1b2cba19761a091c15f","nodeId":"65d11c4a-1ced-48b5-a2c6-9b77e8b9850d","outcome":"completed","summary":"The decisions file is written and validated. No further tool calls are needed.\n\n**Outcome:** `artifacts/goal/episodes/008/decisions.json` exists as one JSON object with the fields `notes`, `spawn`, `read`, `cancel`, `wake`, `finish`. Every filled brief is under 3,000 characters with the verbatim setup script, every placeholder has a var in every item, notes are under 8,000 characters, and 21 reads are requested. The file is untracked, as required.\n\n**What the handed results showed:**\n- Nothing public beats RS2. The fork mine and all three public-search angles found only the yq/CH family, which loses 1.8 to 8 points to RS2. No top-10 entrant has published code or a rule; the organizer's talk says the top 8 are neural nets and 100-constant models.\n- The 7-parameter retail-state family is at its plateau: five restarts all within 0.02 of RS2. Retention hits its upper bound every time, which suggests the fee wants run-level constants.\n- The cleaned-rate-in-posterior idea is retired, both copies flat or negative.\n- The sigma anchor item blocked at clone and is rerun, not counted as tried.\n- The one untested lead is rs-search/c's activity-term hook, which gained on V10 but was never ported onto RS2.\n\n**What episode 8 spawns (6 items, 95 of 400 used):**\n- `e08-run-oracle` a/b/c: an offline per-run fee-scale oracle to measure the ceiling of run-level adaptation before more anchor items are spent, with an online rule only if the ceiling is at least 0.05.\n- `e08-rs2-act` a/b: port of the activity hook onto RS2, parity at weight zero.\n- `e08-anchor-sigma` a2: rerun of the blocked sigma anchor.\n\n**Honest status in the notes:** local gain over STACK is about 0.31, the 10th place is about 4.7 board points away, and no mechanism found in eight episodes moves more than tenths. Episode 9 confirms anything passing the held-out gate on fresh blocks from 5108000, and episode 10 is planned to set finish with a write-up stating the top 10 is out of reach with the mechanisms found. `finish` is false.","treeHash":"4b825dc642cb6eb9a060e54bf8d69288fbee4904","usage":{"cachedInputTokens":3512415,"cost":{"source":"runtime","usdMicros":71663164},"inputTokens":54,"model":"claude-fable-5-1","outputTokens":86816,"runtime":"claude","turns":26,"wallClockMs":1002456}},{"artifacts":[{"bytes":41273,"hash":"f0f9c213c29909def060f273358f517337e73bf3ee082deacd1cba25121dd3a8","mediaType":"application/json","name":"result","path":"artifacts/goal/batches/e09-confirm-tox/items/a/result.json"},{"bytes":1245,"hash":"7ebde779d37c9793c89354e7ec4dd6860e3d11b4c5eb3ce92ab23d3221ca7398","mediaType":"application/json","name":"sources","path":"artifacts/goal/batches/e09-confirm-tox/items/a/sources.json"}],"attempt":1,"bundleHash":null,"device":"a95efa5461cd9dc9","findings":[],"hash":"ff856e45f575584ae3ad266723c0b9d57fce77da952fcdcbf9c09201f6d2fbf5","nodeId":"d6af3c21-e08c-4b35-8a4c-0e6c17021a81","outcome":"completed","summary":"Completed 2,000 fresh seeds per arm; 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