Foundation milestone for Track B's Operation Catalog: shift epiphany-ops from
the v0 identifier-only payload projections to durable value-typed payloads, and
scaffold the companion spec. Scope: the representative §6.10 set (7 primitives +
2 meta-ops); the slice-driven K0 expansion follows.
Core (the K↔J seam):
- epiphany-core exposes a public `CanonicalValue` trait (canonical_bytes /
decode_canonical) delegating to the existing private `Codec` machinery, for
Event/Rest/PitchSpelling/Tie/Slur/Beam/Spanner/RegionTimeModel/TimeAnchor.
No new byte layout — a value's bytes equal what the whole-score codec emits,
so all goldens / criterion 4 stay byte-identical.
Ops (value-typed payloads, frozen reduction rules):
- InsertEventOp{staff_instance,event:Event}, RespellPitchOp{pitch,spelling:
PitchSpelling}, CreateCrossCuttingOp{structure:CrossCuttingValue},
ChangeRegionTimeModelOp{...,new_time_model:RegionTimeModel},
SetUserSystemBreakOp{...,anchor:TimeAnchor}, ReplaceWithRest{rest:Rest}.
Payloads frame each value's CanonicalValue bytes behind a u32 length prefix.
- reduce.rs: read-sites only moved onto the value (rules, conflicts, ordering,
promotion, re-anchoring, undo, transactions unchanged); reduce_onto now
materializes the real event/structure instead of the C4 placeholder.
MaterializedState.spellings now stores PitchSpelling (encode + decode updated).
- v0.rs: frozen identifier-only shapes (migration regression guard).
- migrate.rs: migrate_v0_envelope(v0, &Score) + project_v1_to_v0 + MigrationError;
deterministic and equivalence-preserving. Respell spelling recovered from the
score context; irreversible case is P12-K1.
- valuegen.rs: shared value-type builders (reused by fuzz, migration, tests,
testkit). Resolves P11-C1; P11-C10 Dismiss recorded.
Testkit (Agent F merge gate):
- migration.rs: reduce(v1)==reduce(migrate(project(v1))) byte-identical, plus
migration determinism and a non-vacuity guard; wired into acceptance.rs as
agent_k_migration_equivalence_gate. Generators/harnesses build v1 payloads.
Spec:
- spec/operation_catalog.{tex,pdf}: new companion (independent semver) — framework
+ per-primitive template, the 7+2 representative primitives, the v0→v1 migration
contract, and K1 framework slots for the remaining K0 primitives. Builds clean.
- PASS12_BATCH.md: P12-K1 (respell fingerprint irreversibility).
Gates: cargo build/fmt/clippy -D warnings clean; cargo test --workspace green
(incl. criteria 1/4/5/6 and the new K gate); conformance_suite scale 1 passes.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
M1 — fix Agent C framework defects, tests-first:
- causal ordering: topologically order DVV edges instead of assuming HLC
alone implies causal order (false for adversarial remote envelopes);
HLC only breaks ties among ready operations.
- anomaly cutoff: quarantine from the earliest counter participating in
any violating HLC pair (suffix-minima), e.g. [100,200,50] quarantines
from counter 0, not counter 1.
- pending detection: DVV contiguous ranges use the zero-based per-replica
counter floor; first absent id in any asserted range holds the dependent
pending (vector coverage, not only dots).
- transaction snapshots: rollback removes member-generated conflicts.
- edge tests in concurrent_reduction.rs for all six audited cases.
M2 — reduce onto Agent B's real score graph:
- OperationSet::reduce_onto(&Score) -> GraphMaterialization { state, score }
mutates the real arena, voices, regions, tombstones, indexes, and
cross-cutting structures; base-free reduce() retained.
- VoiceOrigin::SystemPromoted now carries { winning_operation,
losing_operation, original_voice }; spec and Invariant 18 updated.
- graph-aware migration, forward undo, system breaks, promotion pre-pass.
- tests/graph_reduction.rs: 11 tests asserting check_invariants is clean,
plus a 64-seed order-independence sweep.
Pass-11 spec decisions resolved (blocking subset): DVV floor (P11-C7),
HLC-vs-causality, promoted-voice derivation inputs (P11-C4 / core P11-3).
Payload/Score canonical encoding remain deferred to the companion docs.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Levi Neuwirth