v1.91.220.0 fix(office-hours,plan-reviews): write the plan-mode copy through to the design doc and warn when it is newer (#542) (#3408)

* fix(office-hours,plan-reviews): write the host plan-mode copy through to the design doc and warn when it is newer (#542)

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

* docs(changelog): #542 under [Unreleased]

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

* test(instruction-facts): drop the office-hours allowlist row for the removed cross-team sentence

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

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Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

scripts/resolvers/design-doc-discovery.ts

@@ -11,7 +11,10 @@
  * The fragment carries no code fences — the {{DESIGN_DOC_DISCOVERY}} token
  * sits inside each caller's ```bash block. Callers must set $SLUG and
  * $BRANCH first; the block sets $DESIGN and prints "Design doc found: ..." or
- * "No design doc found".
+ * "No design doc found". When /office-hours recorded a host plan-mode copy of
+ * the doc, the helper also prints DESIGN_PLAN_COPY (and STALE_DESIGN_DOC when
+ * the copy is newer) on stderr with the write-through command (#542), so this
+ * block stays the same size in every caller.
  */
 
 import type { TemplateContext } from './types';