docs(long-form): record the adversarial review outcome and the retry target per routing

- HANDOFF section 4a: the single-worker fallback applies on default routing
  (non-DE router and the manual opt-in); a DE-router plan keeps its
  precomputed fallback. Adds the review's verdicts: three confirmed defects
  fixed, one latent hardened, one split accepted, one low left open (a worker
  wedged before its first capture is bounded only by player-ready and CDP
  timeouts and is not retry-eligible).
- cli.mdx: the parallel-stream paragraph no longer promises a single-worker
  retry for every case.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

docs/packages/cli.mdx

@@ -940,8 +940,9 @@ on the bundled `chrome-headless-shell`, at DPR 1, with no forced screenshot. On
 macOS and Windows, multi-worker capture is screenshot-based and still writes
 frames to disk unless you opt in with `HF_CAPTURE_PARALLEL_STREAM=true`. That
 path now retries a stalled worker pool or a mid-stream encoder exit on a fresh
-single-worker session instead of failing the render, but it stays opt-in until
-its error rate matches the disk path's.
+screenshot session, dropping an interleaved render to one worker, instead of
+failing the render; it stays opt-in until its error rate matches the disk
+path's.
 
 Renders still land on the disk path when the output is `png-sequence` or `gif`,
 when HDR or shader-transition layering is in play, and when streaming is