Recomputed every backlog residual from the bytes (1,699 rows, -j 12, zero agent tokens) through the
validated match_one path, deriving asm-subdir + -O0 from corpus.py. R34 cross-check PASSED (closeness
agreed with masked_diff.structured_diff on all 1,610 built rows, 0 classifier errors); 89 nobuild rows
REPORTED not dropped (R32).
BUCKETS: redraft 707 | structural 528 | integration 315 | permuter 57 | unknown 3.
1. HONESTY CORRECTION: 707 of 1,610 (44%) are class SIZE-MISMATCH — the stored best-draft is a
PARTIAL, an incomplete attempt logged with a closeness score (the func_80183814 666-of-5,122
shape). docs/backlog.md has been overstating readiness by ~44%. These route to a FRESH CRACK,
not to a wall and not to the permuter.
2. ACTIONABLE: 315 entries are match_one MATCH *right now*, blocked only on the reconcile ladder —
recomputing beat trusting the stored label because the tree moved since they were logged.
~108,959 gain-ins; top func_80174CB0 (16,482), func_801463A0 (13,534). §52b still applies: ~half
of close=0 drafts fail the whole-binary gate, so these are CANDIDATES not banks.
3. The permuter bucket is 57/1,610 = 3.5% (Task-13B measured 7.7% and called targeting the problem).
Extending the mutation set is CONFIRMED not the big lever — small, real, now bounded.
4. R34 again: 3 of 4 comparable labels DISAGREE with measurement — func_80140D68 / func_8012A328 /
func_801549F8 recorded "schedule" but measure ADDRESSING -> cse. The grinder was aimed wrong.
CONVERGENCE: T0.2 (8/8 failures PLUMBING, 0 walls) and T0.3b (315 integration) independently point at
the SAME lever — the declaration/integration reconcile ladder, worth the 224,410-ins FREE pool AND
~108,959 backlog gain-ins. Two keys eliminated today; untried: canon_sig_reconcile v3.2 and
reconcile_decls.py (the DATA-symbol analog — one T0.2 failure text was a DATA symbol).
The autopsy (hindsight-study §7) assumed the permuter loses for want of a mutation.
Measured over the whole open backlog, it loses because it is aimed at work a
search-closer provably cannot close.
- NEW tools/residual_class.py: decide a near-miss's class FROM THE BYTES. Decodes each
mismatching MIPS word -> (op-skeleton, register-fields, immediate); drift FIRST (one
inserted insn inflates `closeness` by the tail length), then consistent-injective
register map -> REGALLOC-PERM (§31 S11/RC-3), same-multiset-reorder -> SCHEDULE-REORDER,
DELAY-SLOT, WIDTH/BRANCH-POLARITY/STRENGTH/ADDRESSING/IMM-OFFSET/IMM-VALUE. Every class
routes to a BUCKET = which tool the failure wants. Uncovered opcode -> UNKNOWN, COUNTED
(R32). 16 synthetic unit tests (test_residual_class.py).
- NEW tools/autopsy.py: `collect` materialises the corpus Task-12's telemetry never filled
(1 of 6,169 records had a residual) by recompiling every open draft through the EXISTING
match_one path (R33) — 1,752 drafts in 21s at -j12. `report` -> docs/autopsy.md.
- NEW corpus.o0_sources()/is_o0(): the opt-level oracle DERIVED from the Makefile's own -O0
rules, coverage-asserted. Scoring an -O0 target at -O2 makes the residual 100% artefact
(the trap this phase hit four times).
- R34 cross-check baked in: residual_class's closeness vs masked_diff.structured_diff's,
asserted per row; 1,673/1,673 agree, 0 classifier errors.
FINDING: of the 972 records the grinder's own filter admits, only 75 (7.7%) are
permuter-shaped; 547 are structural and 348 are drafts that are not the function at all.
~92% of the daemon's CPU went where it could not win — the byte-grounded explanation of
"7 banks all-time, all Phase 21, 0 since" (Phase-22 audit). grinder.candidates() now
filters on the measured bucket (1,303 -> 78) and takes its directed profile from the
measured class, not the logged label (91% carry none -> it ran on gcc defaults).
Degrades to undirected if uncollected and says so; --no-targeting A/Bs it.
Two measured corollaries (R14, not projections):
- 699 records rank as near-misses at closeness up to 278 purely from a length artefact:
un-attempted work misfiled as a backlog of hard functions -> new `redraft` bucket.
- a 12-draft gate probe of the `integration` bucket banked 1/12 (11 PLUMBING), so the 306
prices Task 14's reconcile ladder rather than promising free banks. func_80167714
(104 ins, reach-134) banked x1, un-propagated by design (§55b).
Two defects fixed forward:
- masked_diff._common_typedefs() used ONE shared probe path, so parallel match_one
processes clobbered each other: 14 of 1,752 drafts lost in a single 12-way run (0.8%),
silently, in every parallel wave ever run. Now per-PID.
- gate_stage.match_one_closeness never passed --o0 -> phantom residuals for every -O0
function, written straight into the backlog this autopsy reads.
R22 clean-fleet: check-all 140 passed, 0 failed of 140; tools-health OK (dedup 1847/0,
C1 234343/234343); 0 NON_MATCHING (G4). Flywheel captured in-session (R30/R31):
cookbook §60, decision-log entry, SETUP.md inventory.
Drew T