<!-- Appendable performance log for the notsus crewrift policy. One "## <date> — optimization period <start> to <end>" entry per extraction round; append new entries at the end, never rewrite old ones. Each entry: coworld, lineage, start point, end point, trajectory, caveats. -->

## 2026-06-12 — optimization period 2026-06-05 to 2026-06-12

**Coworld:** Crewrift Daily league (Softmax/Observatory-hosted). The game version rolled from crewrift 0.1.24 to 0.1.36 (cow_6b70b662) right at the start of the period, and mid-period the official leaderboard moved to the Competition division (per-user champion slot, mixed-role mean_round_score via `get_division_leaderboard`).

**Policy lineage:** notsus (inherited heuristic bot) → slot-aware self-ID patch (absorbed upstream into 0.1.36) → daveey-notsus-llm-0136 (LLM vote-advisor port, submitted to the league 2026-06-05) → the tier1..tier6e experiment line, of which tier4 was the mid-period workhorse, tier5c (vote-fix ladder: reachable suspicion gate + pile-on + recruitment chat) became champion, and nav (clearance-aware A*) is the first validated crew gain after it. tier1 (deduction), tier6e (press timing), tier8b/8c, tier9, and tier10 were all built, measured, and refuted.

**Starting point:** At period open the slot was #8/14 in the Wood division at 65.4 mean round score — essentially flat versus the handoff note (#9/11 at 65.4). After the llm-0136 submission it hit a provisional #1 in Wood at 69.13 (only 4 rounds, low-n) and by 2026-06-08 sat #7 on the Daily board at 75.7–77.0 over 67 rounds (two same-day pulls disagree slightly; treat the exact mean as approximate).

**Ending point:** At session end on 2026-06-12: #9 of 16 in Competition at 49.6 mean over 453 rounds, with tier5c holding the champion slot and recent form ~49–53; a parallel same-day session read #7 at ~44.6, so the exact end rank/mean is snapshot-dependent — call it #7–9 at ~45–50. Top of the field: RowDaBoat 63.7, Andre 58.6, Andre Jr 57.7. Lifetime mean crossed 50.31 at round 400, up from a 38.3 era-low; best rank touched was #9 (one session also recorded a #6 read on 06-11 before the field surged).

**Trajectory:** The first half of the period (06-05 to 06-08) was mostly apparatus, not league movement: the dqueue EC2/Aurora eval fleet was built and calibrated, a blind eval gate was fixed (maxticks 1000→10000 took measured crew score from 3.4 to ~81.6 — an instrument fix, not a policy gain), a dead Bedrock advisor was revived (opus not enabled in the runner account; invalid votes 85%→1% on sonnet), and the one big measured policy win of that stretch was the open-TSP task router: crew win 36/48 → 46/48 (0.750→0.958, CIs separated) at the contested gate on dqueue — though whether that exact change shipped into the league build is not confirmed by the session data. Two seemingly-good tweaks were measured as regressions and reverted (vote deadline 150→200 doubled vote-timeouts; cursor persistence cut vote accuracy 0.381→0.148). League performance data for 06-09/06-10 is sparse: those days went to rebuilding the eval harness onto server-side experience requests, a 13+ hour antfarm outage, and the league's own division re-formation (the Competition leaderboard was still empty on 06-09), so there is no trustworthy rank series for that stretch.

The second half (06-11 to 06-12) is where the policy actually moved: roster pruning retired a 35.8-mean ancient bot that was diluting the slot; a crux battery isolated the real deficit (crew seat vs truecrew: 5/60 pooled wins vs 18/60), root-caused to a mathematically unreachable suspicion vote gate (zero votes in 30 episodes); the tier5a→5b→5c ladder fixed it (tier5c 13/30 at the crux vs truecrew's 11/30, imposter 20/20, pooled league A/B 20/90 vs tier4's 5/90) and was promoted to champion; nav (clearance-aware A*) added the first validated crew gain after it (29/30 vs 26/30). Around those two shipped wins sit roughly ten measured refutations (tier1 deduction no-help at 27/30 vs 29/30; tier6e press +8pp constructed but cut by the live A/B at Welch z=2.04; tier8b attribution 253 firings / zero correct ejections; tier9/tier10 perception lane closed — viewport recall ~0.77, the gap is presence at kills, not recall). Net: our own scoring clearly improved inside the Competition era (lifetime mean 38.3-era → past 50; the per-round gap to truecrew narrowed from ~7.2 to roughly ~4, hedged because truecrew itself was displaced from #1), while nominal rank slipped #6→#9 because the field strengthened faster at both ends — RowDaBoat/sussyboi surged to ~63.7 at the top, and the bottom tier gained near-ceiling imposter forks (a weak-field baseline that scored 26–29/30 became 0/30 against the same-day field).

**Score-comparability caveats:** (1) The pre-06-11 numbers (65–77, Wood/Daily boards) and the post-06-11 numbers (44–50, Competition mixed-role mean) are different scoring regimes — do not read 77→49 as a collapse; they are not on the same scale. (2) League scores additionally deflated ~6 pts mid-period from a meta shift (the field-wide strengthening above), so absolute means are not comparable even across the 06-11→06-12 window — judge progress by rank-vs-field and by controlled A/B deltas, not by raw means.
