docs: purge chain-of-thought leakage from prose

Delete design-session citations (decision/audit/plan ordinals, stack
positions), change narration, review choreography, and reviewer-addressed
justification from comments, JSDoc, docs, READMEs, Agent Notes, tests, and
generator templates; restate every affected fact as current-state contract
prose. Fix generated docs at their sources and regenerate the catalogs and
cordis-surface regions; re-paste type-equiv blocks; update every bilingual
counterpart and re-record the pairs. Record the citation rule in the
committed-artifact-citations Agent Note.

packages/client/web/src/seed.ts

@@ -2,7 +2,7 @@
  * Platform-singleton module-table. These are the ONLY entities the shell
  * shares into the frozen module table — fetch bundles resolve their externals
  * against exactly this set through the loader's require. Keys come from the
- * platform constant module ({@link ./platform.ts}, contract C1: single source
+ * platform constant module ({@link ./platform.ts}, the single source
  * of truth with the tsdown client externals); values stay shell-static
  * imports so every bundle sees the same instance.
  */