chore(producer): drop internal plan-doc refs from source + docs (#903)

The producer source + docs referenced an internal coordination doc
(DISTRIBUTED-RENDERING-PLAN.md) that doesn't ship in the OSS repo,
leaving broken cross-links for adopters. Drops the references and the
bare section-number shorthand that depended on them; behavioural
content (hash contract, retry semantics, threshold rationale) is
preserved inline where it was previously offloaded to a section number.

packages/producer/README.md

@@ -136,8 +136,6 @@ await assemble(
 
 The three activity functions plus their result types are also re-exported from `@hyperframes/producer` so callers that pin the main package don't need a separate subpath import. Supported formats: `mp4` SDR, `mov` ProRes 4444, and `png-sequence`. webm and HDR mp4 trip a typed `FormatNotSupportedInDistributedError` — use the in-process renderer (`executeRenderJob`) for those.
 
-See [`DISTRIBUTED-RENDERING-PLAN.md`](../../DISTRIBUTED-RENDERING-PLAN.md) for the full architecture.
-
 ## How it works
 
 1. **Serve** — spins up a local file server for the HTML composition

packages/producer/src/distributed.ts

@@ -1,9 +1,9 @@
 /**
  * `@hyperframes/producer/distributed` — the distributed render primitives.
  *
- * See `DISTRIBUTED-RENDERING-PLAN.md` for the full architecture. The three
+ * The three activities (`plan` → `renderChunk` × N → `assemble`) are pure
- * activities (`plan` → `renderChunk` × N → `assemble`) are pure functions
+ * functions over local file paths; networking + orchestration live in
- * over local file paths; networking + orchestration live in adapters.
+ * adapters.
  *
  * Adopters (AWS Lambda, Cloud Run Jobs, Temporal, K8s Jobs, plain SSH):
  *

packages/producer/src/regression-harness-distributed.ts

@@ -18,11 +18,11 @@
  * pass the same quality bar the in-process renderer passes against the
  * same frozen baseline. A separate {@link DISTRIBUTED_SIMULATED_MIN_PSNR_DB}
  * pathology floor catches the case where a fixture authored a permissive
- * threshold and distributed regresses to fully-black output. The §5.1
+ * threshold and distributed regresses to fully-black output. The 50 dB
- * 50 dB target was written for per-render comparison (fresh in-process vs
+ * "distributed vs in-process" contract is a per-render comparison
- * fresh distributed); against the frozen baseline file it's unreachable
+ * (fresh in-process vs fresh distributed); against the frozen baseline
- * for either mode due to shared encoder/JPEG-capture jitter, so the
+ * file it's unreachable for either mode due to shared encoder/JPEG-
- * harness can't use it as a per-test gate.
+ * capture jitter, so the harness can't use it as a per-test gate.
  *
  * Not every fixture can run in distributed-simulated mode. Distributed mode
  * refuses webm, HDR mp4, NTSC framerates, and non-{24,30,60} fps at plan
@@ -44,8 +44,9 @@ export type HarnessMode = "in-process" | "distributed-simulated";
  * a chunk that renders fully-black against a fixture authored with a
  * permissive `minPsnr`. Non-pathological drift is caught by the fixture's
  * own threshold; both modes share the same encoder/JPEG-capture jitter
- * floor against the frozen baseline file, so the §5.1 50 dB target is
+ * floor against the frozen baseline file, so the 50 dB distributed-vs-
- * unreachable for either mode and isn't a useful per-test gate.
+ * in-process contract value is unreachable for either mode and isn't a
+ * useful per-test gate.
  */
 export const DISTRIBUTED_SIMULATED_MIN_PSNR_DB = 10;
 

packages/producer/src/services/render/stages/planHash.ts

@@ -1,7 +1,7 @@
 /**
  * planHash — content-addressed hash for distributed render plans.
  *
- * See DISTRIBUTED-RENDERING-PLAN.md §4.2 for the contract:
+ * Hash contract:
  *
  *   planHash = sha256(
  *     SCHEMA_PREFIX
@@ -14,9 +14,10 @@
  *     ⊕ fps ⊕ width ⊕ height ⊕ format
  *   )
  *
- * Two invocations with identical inputs MUST produce the same hash. Adapters
+ * Two invocations with identical inputs MUST produce the same hash.
- * use this to short-circuit `plan()` on workflow replay and to detect
+ * Adapters use this to short-circuit `plan()` on workflow replay and to
- * cross-version mismatches (§9.3 PLAN_HASH_MISMATCH).
+ * detect cross-version mismatches via a typed PLAN_HASH_MISMATCH error
+ * (defined in `errors.ts` and enumerated in `events.ts`).
  *
  * Pure utility; no caller exists yet — the distributed-render
  * `services/distributed/plan.ts` will compose it.

packages/producer/src/services/render/stages/probeStage.ts

@@ -8,9 +8,11 @@
  * clean them up in its `finally` block.
  *
  * Hard constraints preserved verbatim from the in-process renderer:
- *   - `recompileWithResolutions` runs inside this stage because it depends
+ *   - `recompileWithResolutions` runs inside this stage because it
- *     on browser-resolved durations, even though §2.1 of the distributed
+ *     depends on browser-resolved durations. (Distributed-pipeline
- *     plan lists recompile as a sibling phase.
+ *     callers can think of recompile as logically separate from probe,
+ *     but the implementation co-locates them here because they share
+ *     the browser session.)
  *   - `composition` (videos/audios/duration) is mutated in place — callers
  *     downstream see the reconciled view through the same object reference.
  *   - The stage computes the final composition `duration` and `totalFrames`

packages/producer/src/services/renderOrchestrator.ts

@@ -1452,8 +1452,8 @@ export async function executeRenderJob(
   // returned on `compileResult.forceScreenshot`. The sequencer stores it
   // in a local `captureForceScreenshot` below; the BeginFrame calibration
   // fallback updates the local — not `cfg` — and capture stages receive
-  // the value as an explicit parameter. See DISTRIBUTED-RENDERING-PLAN.md
+  // the value as an explicit parameter. This keeps `cfg` immutable for
-  // §4.3 (`LockedRenderConfig.forceScreenshot`).
+  // the rest of the pipeline.
   const enableChunkedEncode = cfg.enableChunkedEncode;
   const chunkedEncodeSize = cfg.chunkSizeFrames;
   // Declared outside the try so `finally` can stop the interval, but

packages/producer/tests/README.md

@@ -98,14 +98,16 @@ passing in the summary):
 
 Both modes use the fixture's authored `minPsnr` as the per-test
 threshold — distributed must clear the same quality bar in-process
-clears against the same frozen baseline. (`DISTRIBUTED-RENDERING-PLAN.md`
+clears against the same frozen baseline. (Internal contract: distributed
-§5.1's 50 dB target is a per-render distributed-vs-in-process contract;
+vs in-process renders of the same fixture should clear 50 dB PSNR
-against the frozen baseline file, neither mode reaches it consistently
+against each other within the same Docker image. Against the frozen
-due to shared encoder/JPEG-capture jitter.) An absolute 10 dB pathology
+committed baseline, neither mode reaches that consistently due to
-floor catches fully-black-output regressions when a fixture authors a
+shared encoder/JPEG-capture jitter — that's why the fixture's authored
-permissive threshold. A distributed failure at the fixture's own
+threshold gates here, not the 50 dB contract value.) An absolute 10 dB
-threshold means the distributed pipeline has drifted — file an issue
+pathology floor catches fully-black-output regressions when a fixture
-rather than relaxing the fixture.
+authors a permissive threshold. A distributed failure at the fixture's
+own threshold means the distributed pipeline has drifted — file an
+issue rather than relaxing the fixture.
 
 `--update` is incompatible with `--mode=distributed-simulated`: the
 in-process renderer is the source of truth for baselines, and the
@@ -145,8 +147,8 @@ exercises one of:
 - per-format chunk-boundary correctness (mp4 H.264, mp4 H.265, ProRes, png-sequence)
 - per-adapter chunk-seam state preservation (GSAP, Anime.js, Three.js, Lottie, CSS, WAAPI)
 
-See `DISTRIBUTED-RENDERING-PLAN.md` §10.2 for the equivalence axes each
+Each distributed fixture covers one or more equivalence axes — see the
-distributed fixture covers.
+`meta.json` `description` field for what a given fixture is locking in.
 
 ### Fixture pattern (4.2 onward)