Merge remote-tracking branch 'origin/master' into codex/simp-session-log-representation

# Conflicts:
#	docs/cordis-catalog/services.md
#	docs/rfc/INDEX.md
#	docs/rfc/implemented/testing/2026-07-06-pin-request-header-content-in-one-scenario.md
#	docs/rfc/proposed/simplification/2026-07-12-simplify-session-log-representation.md
#	packages/support/acp-snapshot/README.md
#	packages/support/acp-snapshot/src/normalize.ts
#	packages/support/acp-snapshot/src/suite.ts
#	packages/support/acp-snapshot/tests/fixtures/suite/pin-turn/session.jsonl
#	packages/support/acp-snapshot/tests/suite.spec.ts

packages/session-persistence/session-persistence-jsonl/package.json

@@ -24,7 +24,7 @@
   "peerDependencies": {
     "@deepseek-ai/dsh-session": "^0.0.1",
     "@deepseek-ai/dsh-session-persistence": "^0.0.1",
-    "cordis": "^4.0.0-rc.6"
+    "cordis": "^4.0.0-rc.7"
   },
   "dependencies": {
     "schemastery": "^3.18.0"
@@ -32,6 +32,6 @@
   "devDependencies": {
     "@deepseek-ai/dsh-session": "workspace:^",
     "@deepseek-ai/dsh-session-persistence": "workspace:^",
-    "cordis": "^4.0.0-rc.6"
+    "cordis": "^4.0.0-rc.7"
   }
 }

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

@@ -20,6 +20,19 @@ function mutableHeader(header: SessionHeader): MutableSessionHeader {
   return header
 }
 
+async function expectParallelFlushError(promise: Promise<unknown>, message: RegExp): Promise<void> {
+  try {
+    await promise
+  } catch (error) {
+    expect(error).toBeInstanceOf(AggregateError)
+    const [cause] = (error as AggregateError).errors as unknown[]
+    expect(cause).toBeInstanceOf(Error)
+    expect((cause as Error).message).toMatch(message)
+    return
+  }
+  throw new Error('expected parallel flush to reject')
+}
+
 async function freshRoot(): Promise<string> {
   const dir = await mkdtemp(join(tmpdir(), 'dsh-jsonl-'))
   dirs.push(dir)
@@ -699,7 +712,7 @@ describe('SessionPersistenceJsonl: edge cases', () => {
     const backend = ctx2.sessionPersistence as unknown as { materialize: (...args: unknown[]) => Promise<void> }
     const origMat = backend.materialize.bind(backend)
     backend.materialize = () => Promise.reject(new Error('disk full'))
-    await expect(ctx2.parallel('session/flush', session)).rejects.toThrow(/disk full/)
+    await expectParallelFlushError(ctx2.parallel('session/flush', session), /disk full/)
     // The events are STILL buffered (not silently dropped): a retry persists them.
     backend.materialize = origMat
     await ctx2.parallel('session/flush', session)

packages/session-persistence/session-persistence-sqlite/package.json

@@ -24,7 +24,7 @@
   "peerDependencies": {
     "@deepseek-ai/dsh-session": "^0.0.1",
     "@deepseek-ai/dsh-session-persistence": "^0.0.1",
-    "cordis": "^4.0.0-rc.6"
+    "cordis": "^4.0.0-rc.7"
   },
   "dependencies": {
     "schemastery": "^3.18.0"
@@ -32,6 +32,6 @@
   "devDependencies": {
     "@deepseek-ai/dsh-session": "workspace:^",
     "@deepseek-ai/dsh-session-persistence": "workspace:^",
-    "cordis": "^4.0.0-rc.6"
+    "cordis": "^4.0.0-rc.7"
   }
 }

packages/session-persistence/session-persistence-sqlite/tests/sqlite.spec.ts

@@ -14,6 +14,19 @@ import { runCoordinatorContract, type CoordinatorFixture } from '../../session-p
 const dirs: string[] = []
 afterEach(async () => { for (const d of dirs.splice(0)) await rm(d, { recursive: true, force: true }) })
 
+async function expectParallelFlushError(promise: Promise<unknown>, message: RegExp): Promise<void> {
+  try {
+    await promise
+  } catch (error) {
+    expect(error).toBeInstanceOf(AggregateError)
+    const [cause] = (error as AggregateError).errors as unknown[]
+    expect(cause).toBeInstanceOf(Error)
+    expect((cause as Error).message).toMatch(message)
+    return
+  }
+  throw new Error('expected parallel flush to reject')
+}
+
 async function freshDbPath(): Promise<string> {
   const dir = await mkdtemp(join(tmpdir(), 'dsh-sqlite-'))
   dirs.push(dir)
@@ -441,7 +454,7 @@ describe('SessionPersistenceSqlite: edge cases', () => {
     }, { inject: ['sessions'] }))
     session.append('turn/start', { turn: 9, trigger: { kind: 'message', source: { kind: 'user' } } })
     await ctx.plugin(SessionPersistenceSqlite, { path })
-    await expect(ctx.parallel('session/flush', session)).rejects.toThrow(/id collision/)
+    await expectParallelFlushError(ctx.parallel('session/flush', session), /id collision/)
     await ctx.fiber.dispose()
   })
 })

packages/session-persistence/session-persistence/package.json

@@ -23,10 +23,10 @@
   "license": "BSD-3-Clause",
   "peerDependencies": {
     "@deepseek-ai/dsh-session": "^0.0.1",
-    "cordis": "^4.0.0-rc.6"
+    "cordis": "^4.0.0-rc.7"
   },
   "devDependencies": {
     "@deepseek-ai/dsh-session": "workspace:^",
-    "cordis": "^4.0.0-rc.6"
+    "cordis": "^4.0.0-rc.7"
   }
 }