docs(f5): D-ablation floor test, exp-54 plan, P-004, grader principle + README refresh - #51
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September 27, 2026 17:06
pytest-xdist workers spawned from python.exe open a black CMD console per worker on Windows. Resolving the gate-zero pytest interpreter to the pythonw.exe sibling of sys.executable (win32 only, fallback to sys.executable) keeps pipes/timeouts/serial-fallback unchanged while stopping the popups.
… + README refresh F5 D-arm no-abstention ablation (floor test): 16 frozen queries x 3 trials = 48 reader (longcat-2.0, instr frozen/f5/reader_D_ablation.txt sha 91b16b8b) + 48 judge (qwen3.7-plus, unchanged). D 2/48 (4.2%), code 0/24, prose 2/24 (F5S-10, F5S-13 single middle trials), majority 0/16, 0 invalid/uncertain. Verdict: reader priors at noise level - Tom's mechanism confirmed, scale not (his 6/14 vs our 2/48); prose B 18.8% vs ~4% floor, margin survives. Files: judged_raw_D_ablation.json + judged_aggregate_D_ablation.json. Also: exp-54 CoT plan (PLANNED), P-004 letter-vs-spirit, judge-verdict-contract issue, deterministic-verdict-by-code principle (AGENTS.md), f5_judged_run.py --reader-instr-file, README Recent results block + badge 1889->1965 (pre-existing). token_reduction_v3_lancedb relocated to TEMP backup for this commit (frozen-inputs gate), restore after.
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F5 D-arm no-abstention ablation (floor test): 16 frozen queries x 3 trials = 48 reader (longcat-2.0, instr frozen/f5/reader_D_ablation.txt sha 91b16b8b) + 48 judge (qwen3.7-plus, unchanged). Key numbers: D 2/48 (4.2%), code 0/24, prose 2/24 (F5S-10, F5S-13 single middle trials), majority 0/16, 0 invalid/uncertain. Verdict: reader priors at noise level - Tom's mechanism confirmed, scale not (his 6/14 vs our 2/48); prose B 18.8% vs ~4% floor, margin survives. Also in batch: exp-54 CoT plan (PLANNED), P-004 letter-vs-spirit, judge-verdict-contract issue (KNOWN_ISSUES), deterministic-verdict-by-code principle (AGENTS.md), f5_judged_run.py --reader-instr-file, README Recent results block (F5 4-arm A 16.3%/B 34.4%/C 97.5%/D 0%; NodeRAG TF-IDF 80% vs BFS 70%; D-ablation floor ~4%) + pre-existing badge hunk 1889->1965. Commit ce5e6c1, 10 files, hooks green (gate-zero flaked once with pytest INTERNALERROR WinError 50, passed on retry). Excluded from batch (still dirty in worktree): multi_provider.py, test_reranker.py, mscodebase_gate.ts, planted_break/results.json, f5judged_D_ablation/, token_reduction_v3_lancedb/ (restored 8/8 untracked post-commit).