Compose to Puzzle5d Migration

[usalu]

🤖️ Prompt

End-to-end migration of the legacy compose/ tree onto the puzzle.puzzle5d@1 artifact schema, pinned to commit 5904ebe.

Scope:

1. Establish a canonical test-directory contract for every atomic and semantic mutation: <mutation>/🧪️tests/<test>/{mutation,diff,snapshot/{before,after},outcome} with text/binary/JSON encodings for each artifact class (snapshot: .dsl.semio/.pack.semio/.json; mutation: .op.semio/.spr.semio/.json; diff: .patch.semio/.patch.spr.semio/.json) plus a typed component.rs fixture descriptor.
2. Complete the missing binary-diff protocol wiring (IoDeclaration.native.diff.binary is currently None).
3. Cover all 28 current atomic Puzzle5d mutations with fixtures, plus port every compose algorithm family (flatten, flatten-merkle, copy/paste, delete, move, diff/apply/invert, hash, validation, quality, filter-kit, find-replaceable-types, architect, representation export, kit-store) as either semantic mutations, inferences, or IO operations.
4. Delete the parallel untyped document model: Puzzle5dDocument, Puzzle5dPlaySnapshot, the serde_json::Value mutation bridge, before/after document comparison as the primary mutation producer, and legacy embedded-catalog normalization.
5. Translate all compose fixtures/assets to new terminology (kit->kind catalogs, design->puzzle snapshot, type->part kind, piece->part, connector->grip template, port->grip kind, connection->fastener) via a ticket-scoped one-time translator that is deleted afterwards.
6. Enforce coverage mechanically via permanent script.ts targets, then delete compose/ entirely.

Execution uses an Opus coordinator + Sonnet execution fleet + Haiku read-only census fleet across 10 gated waves.