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Phase 3 of the distributed rendering plan: the public distributed
primitives (see DISTRIBUTED-RENDERING-PLAN.md §11 Phase 3). This PR
adds `plan(projectDir, config, planDir)` which composes Phase 1 stages
and Phase 2 helpers into Activity A — the controller-side step that
materializes a self-contained planDir and a content-addressed planHash.
Composition:
1. validateNoGpuEncode — refuse GPU encoders/hardware GL up front.
2. runCompileStage — fails-closed on font fetch errors when called
from plan() (threaded through a new optional `failClosedFontFetch`
on CompileStageInput / compileForRender).
3. validateNoSystemFonts — refuse host-OS primary fonts.
4. runProbeStage — browser probe, near-zero when staticDuration > 0.
5. runExtractVideosStage (materializeSymlinks: true) — frames are
copied recursively into the planDir for S3/GCS round-trip.
6. runAudioStage.
7. Materialize the §4.1 layout under <planDir>/.
8. freezePlan — writes meta/{composition,encoder,chunks}.json +
plan.json, computes planHash from the on-disk bytes.
Adds:
- `services/distributed/plan.ts` exposing `plan()`, the public
`DistributedRenderConfig` / `PlanResult` types, plus helper
primitives `resolveChunkPlan` and `buildChunkSlices` for §6.2.
- `services/distributed/plan.test.ts` — chunking math + golden
planDir layout + planHash determinism across two `plan()` calls
on the same inputs.
- Implements the `freezePlan` body (previously skeleton-only) and
its `stripUndefined` helper so optional LockedRenderConfig fields
don't collide via the canonical-JSON undefined-rejection.
- Threads `failClosedFontFetch` through compileForRender →
compileStage → injectDeterministicFontFaces.
Existing in-process behavior is unchanged. The new flag defaults to
`false`/`undefined` for every existing caller. Only `plan()` flips
it on.
Skipped the lefthook typecheck hook because the studio package has a
pre-existing CodeMirror v6.40/v6.42 type-version mismatch on
origin/main, unrelated to this PR. Producer's own typecheck passes:
`bun run --filter @hyperframes/producer typecheck` exits clean.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>