perf(registry): cache resolved component info

[ricardo-devis-agullo]

Summary

• cache resolved component info from each version's package.json in a repository-scoped 1000-entry LRU with per-key single-flight loading
• recursively freeze cached component info and remove route/repository mutations while keeping allVersions request-current
• cache local version metadata outside hot reload and invalidate exact component-info keys safely after successful publication
• add deterministic mutation, LRU, retry, repository-isolation, and publish-race coverage
• update burst assertions and mark Plan 005 complete

Verification

• npm --workspace packages/oc run build
• npx mocha "test/unit/**/*.js" --reporter dot --timeout 20000 (936 passing)
• npm --workspace packages/oc run bench:burst (one package.json, env, provider, and template read for N=50 and N=200)
• storage-simulated benchmark: package reads 1,0,0, 100% success, RPS +172%, p95 -62% against the same-machine baseline
• batch-storage benchmark: package reads 0,0,0, 100% success, RPS +282%, p95 -73% against the same-machine baseline

The full test-silent command reached 939 passing tests, but six integration lifecycle hooks could not bind ports 3030/3031 because a pre-existing oc dev process from another workspace owns those ports. All unit tests pass independently.

[Copilot]

Pull request overview

Caches immutable component manifests to reduce registry storage reads while preserving request-specific metadata and publication consistency.

Changes:

• Adds repository-scoped LRU caching, single-flight loading, freezing, and invalidation.
• Removes route-level manifest mutation and strengthens burst assertions.
• Adds comprehensive cache, race, isolation, and mutation tests.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
plans/README.md	Marks Plan 005 complete.
packages/oc/src/registry/domain/repository.ts	Implements manifest and local-version caching.
packages/oc/src/registry/routes/index.ts	Avoids mutating manifests during view mapping.
packages/oc/src/registry/routes/component-info.ts	Builds JSON responses immutably.
packages/oc/src/registry/routes/component-preview.ts	Builds preview responses immutably.
packages/oc/tasks/benchmarks/single-flight-burst.js	Requires exactly one manifest read per burst.
packages/oc/test/unit/registry-domain-repository-manifest-cache.js	Covers cache and publication behavior.
packages/oc/test/unit/registry-routes-manifest-mutation.js	Verifies frozen manifests work across routes.

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