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/subagent/subagent/src/list-children.ts

@@ -80,8 +80,8 @@ export type SubagentListEntry =
      * for any candidate whose log makes a registered unit's fold or schema
      * throw (deterministic data damage, contained per child); `unavailable`
      * when the candidate's persistence inspection failed (retried on the
-     * next listing). `unsupported` is kept for consumers already routing on
-     * it but is no longer produced.
+     * next listing). `unsupported` is never produced; it remains in the
+     * union for consumers that route on it.
      */
     readonly reason: 'corrupt' | 'unsupported' | 'unavailable'
   }
@@ -439,10 +439,7 @@ const LIFECYCLE_WITNESS_KEYS = [
   'version', 'id', 'createdAt', 'cwd', 'parentSession', 'seedLength', 'delegationDepth',
 ] as const
 
-/**
- * Whether an inspected log still belongs to the enumerated lifecycle,
- * mirroring the retired query-source compatibility check's field set.
- */
+/** Whether an inspected log still belongs to the enumerated lifecycle. */
 function sameLifecycle(meta: SessionHeader, expected: SessionHeader): boolean {
   return LIFECYCLE_WITNESS_KEYS.every(key => meta[key] === expected[key])
 }

packages/subagent/subagent/src/types.ts

@@ -294,7 +294,7 @@ export interface SubagentProvider {
   /**
    * OPTIONAL (continuable-creation capability): contribute the detached
    * creation inputs that distinguish this provider's continuable children —
-   * today only whether the child session is seeded with parent history. Method
+   * only whether the child session is seeded with parent history. Method
    * presence IS the capability: the service rejects continuable starts on
    * providers without it, while a provider that has it may still serve
    * ordinary one-shot delegations.