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/session/session-persistence-jsonl/tests/jsonl.spec.ts

@@ -201,7 +201,6 @@ describe('SessionPersistenceJsonl: durability and crash semantics', () => {
     expect((await ctx.sessionPersistence.list()).map(h => h.id)).not.toContain(m.id)
 
     await ctx.sessionPersistence.append(m.id, oneTurnLog())
-    // now materialized
     expect((await stat(dir)).isDirectory()).toBe(true)
     expect((await stat(rawLogPath(root, '/work', m.id))).isFile()).toBe(true)
     expect((await ctx.sessionPersistence.list()).map(h => h.id)).toContain(m.id)