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/support/acp-snapshot/src/harness.ts

@@ -760,8 +760,8 @@ async function harvestSessionLogs(root: string): Promise<HarvestedLog[]> {
     })
   }
   // Primary (no parentSession) first, then children by ascending createdAt. A
-  // scenario has exactly one top-level session. In the synchronous cut sibling
-  // children are created strictly sequentially, so their createdAt values are
+  // scenario has exactly one top-level session. Subagent children are created
+  // synchronously and strictly sequentially, so their createdAt values are
   // strictly ordered; the recordedId tiebreak only keeps a degenerate
   // same-millisecond collision (unreachable here) deterministic. This harvest
   // order must match the replay load order in dsh-llm-replay's loadSessionScripts