epiphany/spec
Levi Neuwirth 25c473314b Sign t9 with a mutation that actually kills it
t9 attributed its mutation to t2 in both the contract row and the test comment.
The sweep disproved that attribution: t9 stayed green under t2's schema_major
change, because the from-empty spine reaches a note whatever the block stamps.
A mutation borrowed from another test signs nothing unless it is observed to
kill this one.

Signed with the dispatch-arm bypass instead:

    OperationKind::SetTuningContext(_) => OperationEffect::Applied

which skips tuning reduction without making the match non-exhaustive - so the
mutation isolates the reduction rather than being absorbed by a compile error.
Observed exactly as predicted: the spine operations stayed applied, the note
stayed reachable, and the test failed on the authored tuning-context
assertion, with the seeded default 440.0 surviving in place of the authored
441.0. Reversed by editing back; baseline green.

Both attribution sites now name that mutation and record why the previous one
was wrong, since a wrong mutation attribution is worse than a missing one: it
reads as signed.

Gate: 1410 tests, clippy 0, fmt clean, git diff --check clean.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QjsEnYhm1gPpf6ii2iFxFV
2026-07-29 10:18:57 -04:00
..
vectors G2b: unconflate the corpus version domains, unscope t10, and sign the mutations 2026-07-29 10:09:49 -04:00
ANALYSIS_GENESIS_PERSISTENCE.md The operation set absorbs genesis 2026-07-24 15:11:36 -04:00
ANALYSIS_TEXT_RUN_PRIMITIVES.md Editor T4-pre W3: the text run carries both its string and its ink 2026-07-28 14:38:06 -04:00
AUDIT_GMINOR_VOCABULARIES.md Audit the G-minor reachable vocabularies: a ledger, a matrix, one stale sentence 2026-07-28 18:27:35 -04:00
CONTRACT_CORE_DECODE_VECTORS.md The decode vector corpus reaches the core score wire 2026-07-24 11:38:15 -04:00
CONTRACT_EDITOR_T1A_GOLDENS.md Editor track: the plan, and the T1a golden-harness contract 2026-07-23 14:57:43 -04:00
CONTRACT_EDITOR_T2_SELECTION.md Editor T2: contract for selection v2, the golden gate, and copy/paste 2026-07-23 17:07:18 -04:00
CONTRACT_EDITOR_T3_CARET.md Editor T3: contract for the note-entry caret 2026-07-24 12:55:05 -04:00
CONTRACT_EDITOR_T4PRE_IR.md Editor T4-pre: the IR readiness contract, and the genesis-persistence table 2026-07-24 14:47:08 -04:00
CONTRACT_EDITOR_T4PRE_W2_GLYPHS.md Editor T4-pre W2: the glyph-asset contract, and three parallelism claims get finer 2026-07-24 17:50:02 -04:00
CONTRACT_EDITOR_T4_SPIKE.md Contract revision 6: round 1 was testing the wrong property on the wrong glyphs 2026-07-28 21:24:47 -04:00
CONTRACT_GENESIS_G1_INSTRUMENT.md Contract G1: one operation, and the two things that make from-empty correct 2026-07-24 18:04:30 -04:00
CONTRACT_GENESIS_G2A_SETTINGS.md Contract G2a round five: the sixth hand-maintained site, and locking Registered 2026-07-28 15:47:17 -04:00
CONTRACT_GENESIS_G2B_TUNING.md Sign t9 with a mutation that actually kills it 2026-07-29 10:18:57 -04:00
CONTRACT_GMINOR_IMPLEMENTATION.md Amend the G-minor contract: the [7f] oracle, and the PDFs the touch table missed 2026-07-28 18:59:00 -04:00
CONTRACT_GMINOR_VOCABULARY_AUDIT.md Audit contract amendments: a possible gate, and four scoping repairs 2026-07-28 18:08:55 -04:00
CONTRACT_P13S1_LABELS.md P13-S1: every requirement is named, and now it is also numbered 2026-07-21 18:27:52 -04:00
CONTRACT_P13S6_PROMOTION.md P13-S6 ratified: the lattice block, and an argument that did not survive arithmetic 2026-07-22 14:26:08 -04:00
CONTRACT_P13S6_TEMPERAMENTS.md P13-S6: the tuning constructions, drafted -- and why sourcing was not enough 2026-07-22 11:50:06 -04:00
CONTRACT_PUSH4B_3BII_IDENTITY.md Push 4b tranche 3b-ii: one SmuflVersion, and a live ordering bug dies with the homonym 2026-07-23 19:30:52 -04:00
CONTRACT_PUSH4B_3BI_WIRE.md Push 4b tranche 3b-i: the score wire opens schema major 3 2026-07-23 17:35:55 -04:00
CONTRACT_PUSH4B_ACCIDENTALS.md Push 4b tranche 3a: contract for the accidental vocabulary, and S10-S12 filed 2026-07-23 13:55:19 -04:00
CONTRACT_PUSH4B_ADAPTIVE.md Push 4b: ji-adaptive-5limit resolves, and the blocker was never HarmonicContext 2026-07-24 10:17:46 -04:00
CONTRACT_PUSH4B_PITCHSPACES.md Push 4b tranche 1: contract for the pitch-space slice 2026-07-22 17:08:00 -04:00
CONTRACT_PUSH4B_RESOLVER.md Push 4b tranche 2: contract for the in-memory tuning resolver 2026-07-23 10:06:25 -04:00
CONTRACT_PUSH4B_SPEC1.md Push 4b Wave 1a: three ratified corrections, and a citation that pointed the wrong way 2026-07-22 11:49:40 -04:00
CONTRACT_PUSH4B_TEMPERAMENTS.md Push 4b tranche 2b: contract for the ten historical temperaments 2026-07-23 11:38:14 -04:00
CONTRACT_TEXTPROJ_DOCUMENT.md Text Projection: the document layer, and the equation closes 2026-07-21 15:05:28 -04:00
CONTRACT_TEXTPROJ_OPS.md Text Projection: the operation layer, and the tests that can see it fail 2026-07-21 13:43:09 -04:00
DRAFT_P13S6_TEMPERAMENTS.md P13-S6 ratified: the lattice block, and an argument that did not survive arithmetic 2026-07-22 14:26:08 -04:00
PASS11_RATIFICATION_LOG.md P12-I2: wire the ratified MUSCLOID layout-object id derivation 2026-06-27 12:46:19 -04:00
PASS11_WORKLIST.md Pass 11: ratify provisional byte choices into normative spec text 2026-06-21 22:30:06 -04:00
PASS12_BATCH.md Pass 12 G-pass: ratify the full batch (28 rows) — spec tranche 2026-07-07 10:23:30 -04:00
PASS12_RATIFICATION_LOG.md P13-S1: every requirement is named, and now it is also numbered 2026-07-21 18:27:52 -04:00
PASS12_WORKLIST.md Pass 12 G-pass: ratify the full batch (28 rows) — spec tranche 2026-07-07 10:23:30 -04:00
PASS13_CANDIDATES.md Genesis G2b: SetTuningContext, and the accept-set raise it pays for 2026-07-29 09:30:32 -04:00
PHASE2_F_WEEK0_WORKLIST.md Phase 2: spelling + decomposition pre-passes (Agent H) with F merge gate 2026-06-23 16:33:39 -04:00
PHASE2_QUICKSTART.md Phase 2: spelling + decomposition pre-passes (Agent H) with F merge gate 2026-06-23 16:33:39 -04:00
PLAN_EDITOR_APP.md Contract revision 6: round 1 was testing the wrong property on the wrong glyphs 2026-07-28 21:24:47 -04:00
PLAN_GENESIS_OPS.md Genesis G2b: SetTuningContext, and the accept-set raise it pays for 2026-07-29 09:30:32 -04:00
PLAN_GMINOR_SCHEMA_MINOR.md G2b amendments: undo restores the seed, epoch 10 lands, and a real touch table 2026-07-28 21:27:17 -04:00
PLAN_P13S1_LABELS.md P13-S1: every requirement is named, and now it is also numbered 2026-07-21 18:27:52 -04:00
PLAN_P13S2_CMN24.md P13-S2: the alteration is space-relative, and the core fails closed 2026-07-22 09:00:09 -04:00
PLAN_PUSH4B_TUNING.md Push 4b Wave 1a: three ratified corrections, and a citation that pointed the wrong way 2026-07-22 11:49:40 -04:00
PLAN_TEXTPROJ_DOCUMENT.md Text Projection: the document layer, and the equation closes 2026-07-21 15:05:28 -04:00
PLAN_TEXTPROJ_OPS.md Text Projection: the operation layer, and the tests that can see it fail 2026-07-21 13:43:09 -04:00
QUICKSTART.md Pass 11: ratify provisional byte choices into normative spec text 2026-06-21 22:30:06 -04:00
RULING_GENESIS_PERSISTENCE.md Editor T4-pre W2: the glyph-asset contract, and three parallelism claims get finer 2026-07-24 17:50:02 -04:00
binary_format.pdf Genesis G2b: SetTuningContext, and the accept-set raise it pays for 2026-07-29 09:30:32 -04:00
binary_format.tex Genesis G2b: SetTuningContext, and the accept-set raise it pays for 2026-07-29 09:30:32 -04:00
core_spec.pdf Genesis G2b: SetTuningContext, and the accept-set raise it pays for 2026-07-29 09:30:32 -04:00
core_spec.tex Genesis G2b: SetTuningContext, and the accept-set raise it pays for 2026-07-29 09:30:32 -04:00
operation_catalog.pdf Genesis G2b: SetTuningContext, and the accept-set raise it pays for 2026-07-29 09:30:32 -04:00
operation_catalog.tex Genesis G2b: SetTuningContext, and the accept-set raise it pays for 2026-07-29 09:30:32 -04:00
quality_metric_catalog.pdf P13-S1: every requirement is named, and now it is also numbered 2026-07-21 18:27:52 -04:00
quality_metric_catalog.tex P13-S1: every requirement is named, and now it is also numbered 2026-07-21 18:27:52 -04:00
reference_suite.pdf P13-S1: every requirement is named, and now it is also numbered 2026-07-21 18:27:52 -04:00
reference_suite.tex P13-S1: every requirement is named, and now it is also numbered 2026-07-21 18:27:52 -04:00
text_projection.pdf Genesis G2b: SetTuningContext, and the accept-set raise it pays for 2026-07-29 09:30:32 -04:00
text_projection.tex Genesis G2b: SetTuningContext, and the accept-set raise it pays for 2026-07-29 09:30:32 -04:00