api_lock_closeout_report.txt

API Lock Closeout Report

Objective
Close roadmap item: [ ] Lock APIs

Validation executed
1) Public API usage aggregation across samples/games/tools imports targeting /src/engine/*/index.js
2) Focused validation tests:
   - tests/production/EnginePublicBarrelImports.test.mjs
   - tests/production/TestsValidationCombinedPass.test.mjs

Execution evidence
- Public engine subsystem barrels actively consumed: 38
- Highest-consumption public barrels include:
  - theme (534 import sites)
  - scene (251 import sites)
  - debug (216 import sites)
  - input (176 import sites)
- Focused tests: PASS
  - EnginePublicBarrelImports: PASS
  - TestsValidationCombinedPass: PASS

Locked public API rule (execution-backed)
- Public surfaces are subsystem barrels under `src/engine/*/index.js`.
- Consumer imports in samples/games/tools are expected to target barrel exports, not deep internals.

Excluded from lock
- Deep implementation modules not exported through subsystem barrel `index.js`.
- Transitional/internal helper files under subsystem internals.

Status recommendation
- `Lock APIs` => [x]