fusion-harness/live_final_generation/harness-artifacts/triage-round-3.md

Diagnosis — GATE DEFECT: The builder's work is correct and complete; the gate can never pass it. gate.py:61 defines clean_md(s) = re.sub(r"[*_]", "", s)— intended to strip markdown emphasis, it also deletes every underscore from the text being searched. All 7 required strategy names contain underscores, so"set_based_ctes" in clean_md(...)is mathematically unsatisfiable for any possible RESULTS.md (the gate's own round-2/3 output proves it: it echoessetbasedctes/waltunedgen— mangled by the gate, not written that way). This single line causes all four FAILs (table match count 0 → "no such table", both winner-name checks, empty parsed times → 5x check). I verified the real state:/private/tmp/ddc0f4d0/fusion-harness/RESULTS.md contains a well-formed table with all 7 exact plan names, positive measured times and peak-RAM figures, a Speed Winner (set_based_ctes, 0.1768s = table minimum), a Memory Winner (wal_tuned_gen`, 25.657 MB = minimum among full-1M rows, baseline excluded), and a 2030x speedup vs naive — every substantive requirement is already met. The builder's round-3 report is accurate; rounds 2–3 are identical because there is nothing left for the builder to fix.

Do exactly this

1. HUMAN/HARNESS (not builder): patch /tmp/fusion-harness-K48sbW/gate.py line 61 from return re.sub(r"[*_]", "", s)toreturn re.sub(r"[*]", "", s). Underscores must survive cleaning; backtick/asterisk stripping stays. No other gate change is needed.
2. BUILDER: change nothing. Leave /private/tmp/ddc0f4d0/fusion-harness/bench.py and RESULTS.md exactly as they are — they satisfy every check once matching works (RESULTS.md is regenerated fresh each run, so mtime/consistency checks will pass).
3. Re-run the gate once the patch lands; expect GREEN.

Do NOT

• Do NOT rename strategies to underscore-free variants (e.g., setbasedctes) or strip underscores/backticks in RESULTS.md to appease the broken matcher — that diverges from BENCH_PLAN.md's canonical names and is gate-gaming.
• Do NOT let the builder edit /tmp/fusion-harness-K48sbW/gate.py itself; the fix is the human's call, flagged here.
• Do NOT burn rounds 4–5 re-running the unmodified gate against unmodified files — the failure is deterministic until line 61 is patched.