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Levi Neuwirth 4a2ee312f7 Push 4b tranche 1: contract for the pitch-space slice 
Types, the catalog data that fills them, and the consumer that reads them --
dispatched as one vertical slice rather than the plan's three steps. A Chapter 4
type surface with no consumer is the shape that produced Staff::default_clef and
NOTEHEAD_ANCHORS, so the acceptance test is behavioural: a cmn-24 pitch
transposes end-to-end.

Six of the thirteen built-in pitch spaces are underdetermined by the
specification -- the three ji-* generators and all three of maqam-base,
gamelan-slendro and gamelan-pelog. The contract requires they be represented as
unresolved and reported, never inferred.

Writing it also caught an incomplete paraphrase of
req:tuning:diatonic-chromatic-mapping in the contract's own text: it has three
clauses, not two, and both built-in mappings satisfy all three -- so a
constructor enforcing only the first two would pass every test built from the
catalog. That is P13-S9's discipline applied to the contract that cites it.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
 		2026-07-22 17:08:00 -04:00
..
vectors Text Projection: whole-document conformance, and a corpus with teeth 2026-07-21 15:44:25 -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_PITCHSPACES.md Push 4b tranche 1: contract for the pitch-space slice 2026-07-22 17:08:00 -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_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 Pass 13: five ledger movements, one of them a repair to the ledger itself 2026-07-22 15:24:43 -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_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
binary_format.pdf P13-S1: every requirement is named, and now it is also numbered 2026-07-21 18:27:52 -04:00
binary_format.tex P13-S1: every requirement is named, and now it is also numbered 2026-07-21 18:27:52 -04:00
core_spec.pdf P13-S6: all twenty tuning systems now say what they mean 2026-07-22 14:54:25 -04:00
core_spec.tex P13-S6: all twenty tuning systems now say what they mean 2026-07-22 14:54:25 -04:00
operation_catalog.pdf P13-S2: the alteration is space-relative, and the core fails closed 2026-07-22 09:00:09 -04:00
operation_catalog.tex P13-S2: the alteration is space-relative, and the core fails closed 2026-07-22 09:00:09 -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 P13-S1: every requirement is named, and now it is also numbered 2026-07-21 18:27:52 -04:00
text_projection.tex P13-S1: every requirement is named, and now it is also numbered 2026-07-21 18:27:52 -04:00