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BFM-decomp/docs
Drew T d3e6d6a702 feat(phase-29): T0.2 gate probe — the FREE pool is PLUMBING-blocked, not wall-blocked (4 banked)
MEASURED, not projected (R14): 12 gate attempts across ov_SC01_000 + ov_SC01_001, one draft per
build for clean attribution.

- 4 BANKED (func_8017B490 x2, func_801463A0 x2); 8 failed; **0 DIFF — zero compiler walls**
- all 8 failures are the §75a/def-side declaration class: `conflicting types for 'D_800A651C'`
  (DATA sym) and `conflicting types for 'func_8013D53C'` (the member's OWN def-side decl)
- => raw conversion 33%, but the ceiling is NOT 33%: the blocker is declaration plumbing, which
  this project has named tools for. Plumbing recovery has out-earned drafting in every phase that
  measured both (P19 fix_arity_callers, P28 dedup_extend 6,174 members / 95.6% from one new mode)

TWO CORRECTIONS TO MY OWN T0.1 POOL MATH, both downward:
- 2 of the 8 top "FREE" families were refused outright by the §42e pinned-exemplar guard (the 270
  skips) => "FREE" does NOT imply sweepable; pins are a third blocker the decomposition missed.
  Recoverable (--allow-pins; SESSION-19 banked pinned families x134), but I mis-labelled them
- n_templatable counts the matched exemplar, so every T0.1 family figure is ~1 member (~0.7%) high

NEGATIVE RESULT (§80, scoped to this base): --fix-def-sig REGRESSES this class — 0 banked and 2
PLUMBING became CC1-FAIL despite targeting the same error text. Do not re-buy without re-testing.

NAMED NEXT LEVER: family_sweep --normalize-self-decls, whose help text cites fixing "the conflicting
types for func_X that blocked 133/137 of func_801670E4" — exactly this failure. Gate-phase transform,
so it cannot run under --stage-only, and --limit caps FAMILIES not MEMBERS => needs a full ~123-member
family run. Highest-value outstanding probe, zero agent tokens.

R22 clean-fleet 140/140 BYTE-IDENTICAL; tools-health/dedup 1886/0; 0 NON_MATCHING (G4).
Fleet: instr 80.6% (10,589,065) · distinct-code 68.3% (3,846,416) · fn-count 89.19%.
2026-07-26 13:12:09 -06:00
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