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.

docs/persistence-catalog.md

@@ -35,7 +35,8 @@ export type SurfaceEventType =
  *   (inclusive) through `end` (inclusive) with this node. Both must exist as
  *   surface nodes in the current surface. `start === end` replaces a single
  *   node. The node's {@link SessionEvent.sourceEventSeqs} must include every
- *   shadowed surface node. Used by compaction and possible other manipulations.
+ *   shadowed surface node. Used by compaction; any surface-replacing producer
+ *   may use it.
  */
 export type SurfaceOp =
   | 'append'
@@ -78,7 +79,7 @@ export type SessionEvent<T extends SessionEventType = SessionEventType> = {
 }[T]
 ```
 
-Sources: [`packages/core/session/src/types.ts:308`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:315`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:343`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:375`](../packages/core/session/src/types.ts)
+Sources: [`packages/core/session/src/types.ts:308`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:315`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:344`](../packages/core/session/src/types.ts) · [`packages/core/session/src/types.ts:376`](../packages/core/session/src/types.ts)
 
 ## Events