diff --git a/src/main/codex/codex-structured-session-close.test.ts b/src/main/codex/codex-structured-session-close.test.ts
index 4238c75de9e..b04e7bc2540 100644
--- a/src/main/codex/codex-structured-session-close.test.ts
+++ b/src/main/codex/codex-structured-session-close.test.ts
@@ -11,6 +11,8 @@ import {
 } from './codex-structured-session-adapter'
 import { handleCodexSessionExit } from './codex-structured-session-close'
 import type { CodexSession } from './codex-structured-session-state'
+import type { StructuredAgentSessionAdapter } from '../native-chat/agent-session-wire/structured-agent-session-adapter'
+import { StructuredAgentSessionAdapterRouter } from '../native-chat/agent-session-wire/structured-agent-session-adapter-router'
 
 const THREAD = 'thread-1'
 
@@ -60,6 +62,16 @@ function adapterFixture() {
   return { adapter, connections, events }
 }
 
+function claudeAdapterStub(): StructuredAgentSessionAdapter {
+  return {
+    acquire: vi.fn(async () => ({ process: { pid: 1 } }) as never),
+    dispatch: vi.fn(),
+    cancelTurn: vi.fn(),
+    answerPrompt: vi.fn(),
+    setOption: vi.fn()
+  }
+}
+
 describe('Codex structured session close lifecycle', () => {
   it('forwards a one-shot exit when lifecycle admission is rejected', () => {
     const connection: CodexAppServerConnection = {
@@ -164,4 +176,27 @@ describe('Codex structured session close lifecycle', () => {
       { cause: 'unexpected-exit', reason: 'sink failed', fence: 7 }
     ])
   })
+
+  it('routes Codex sink-failure recovery through force-close and preserves unexpected-exit settlement', async () => {
+    const { adapter, connections, events } = adapterFixture()
+    const router = new StructuredAgentSessionAdapterRouter(
+      { claude: claudeAdapterStub(), codex: adapter },
+      async () => {}
+    )
+    await router.acquire({ identity: identity('session-1'), fence: 7, spawnToken: 'spawn-1' })
+    const current = connections[0]
+    if (!current) {
+      throw new Error('missing connection')
+    }
+    current.connection.close = async () => {
+      current.handlers.onExit?.(new Error('journal sink failed'))
+      return true
+    }
+
+    const forceCloseSession = router.forceCloseSession
+    await expect(forceCloseSession('session-1')).resolves.toBe(true)
+    expect(events.filter((event) => event.type === 'ended')).toMatchObject([
+      { cause: 'unexpected-exit', reason: 'journal sink failed', fence: 7 }
+    ])
+  })
 })
diff --git a/src/main/native-chat/agent-session-wire/structured-agent-session-adapter-router.test.ts b/src/main/native-chat/agent-session-wire/structured-agent-session-adapter-router.test.ts
index 2379cbc1f71..c6566083eac 100644
--- a/src/main/native-chat/agent-session-wire/structured-agent-session-adapter-router.test.ts
+++ b/src/main/native-chat/agent-session-wire/structured-agent-session-adapter-router.test.ts
@@ -58,3 +58,57 @@ describe('StructuredAgentSessionAdapterRouter.closeSession', () => {
     expect(dispatch).toHaveBeenCalledTimes(1)
   })
 })
+
+describe('StructuredAgentSessionAdapterRouter optional lifecycle methods', () => {
+  it.each([
+    ['forceCloseSession', 'forceCloseSession'],
+    ['disposeSession', 'disposeSession']
+  ] as const)(
+    '%s forwards to the owner and retains it until proven stopped',
+    async (_label, method) => {
+      const claude = adapterOf(vi.fn(async () => true))
+      const stop = vi.fn().mockResolvedValueOnce(false).mockResolvedValueOnce(true)
+      claude[method] = stop
+      const dispatch = vi.fn().mockResolvedValue({ state: 'unknown', reason: 'test' })
+      claude.dispatch = dispatch
+      const codex = adapterOf(vi.fn(async () => false))
+      const router = new StructuredAgentSessionAdapterRouter({ claude, codex }, async () => {})
+      const identity = { sessionId: 'session-1', agent: 'claude' } as never
+      await router.acquire({ identity, fence: 1, spawnToken: 'spawn-1' })
+      const stopSession = router[method]
+
+      await expect(stopSession('session-1')).resolves.toBe(false)
+      await expect(
+        router.dispatch({
+          sessionId: 'session-1',
+          clientMessageId: 'client-1',
+          body: {} as never,
+          fence: 1
+        })
+      ).resolves.toMatchObject({ state: 'unknown' })
+      await expect(stopSession('session-1')).resolves.toBe(true)
+      expect(stop).toHaveBeenCalledTimes(2)
+      expect(dispatch).toHaveBeenCalledOnce()
+    }
+  )
+
+  it.each(['forceCloseSession', 'disposeSession'] as const)(
+    'falls back to closeSession when an owner lacks %s',
+    async (method) => {
+      const closeSession = vi.fn().mockResolvedValue(true)
+      const claude = adapterOf(vi.fn(async () => true))
+      claude.closeSession = closeSession
+      const codex = adapterOf(vi.fn(async () => false))
+      const router = new StructuredAgentSessionAdapterRouter({ claude, codex }, async () => {})
+      await router.acquire({
+        identity: { sessionId: 'session-1', agent: 'claude' } as never,
+        fence: 1,
+        spawnToken: 'spawn-1'
+      })
+      const stopSession = router[method]
+
+      await expect(stopSession('session-1')).resolves.toBe(true)
+      expect(closeSession).toHaveBeenCalledWith('session-1')
+    }
+  )
+})
diff --git a/src/main/native-chat/agent-session-wire/structured-agent-session-adapter-router.ts b/src/main/native-chat/agent-session-wire/structured-agent-session-adapter-router.ts
index 5b079e9ebcc..49015d8303d 100644
--- a/src/main/native-chat/agent-session-wire/structured-agent-session-adapter-router.ts
+++ b/src/main/native-chat/agent-session-wire/structured-agent-session-adapter-router.ts
@@ -66,13 +66,28 @@ export class StructuredAgentSessionAdapterRouter implements StructuredAgentSessi
   historyFilePath = (input: { identity: AgentSessionJournalIdentity }) =>
     this.requireAgent(input.identity).historyFilePath?.(input) ?? Promise.resolve(null)
 
-  async closeSession(sessionId: string): Promise<boolean> {
+  closeSession = (sessionId: string): Promise<boolean> =>
+    this.stopSession(sessionId, (adapter) => adapter.closeSession)
+
+  forceCloseSession = (sessionId: string): Promise<boolean> =>
+    this.stopSession(sessionId, (adapter) => adapter.forceCloseSession ?? adapter.closeSession)
+
+  disposeSession = (sessionId: string): Promise<boolean> =>
+    this.stopSession(sessionId, (adapter) => adapter.disposeSession ?? adapter.closeSession)
+
+  private async stopSession(
+    sessionId: string,
+    selectStop: (
+      adapter: StructuredAgentSessionAdapter
+    ) => NonNullable<StructuredAgentSessionAdapter['closeSession']> | undefined
+  ): Promise<boolean> {
     const adapter = this.owners.get(sessionId)
     if (!adapter) {
       return false
     }
-    const closed = await adapter.closeSession?.(sessionId)
-    if (closed === true) {
+    const stop = selectStop(adapter)
+    const stopped = await stop?.call(adapter, sessionId)
+    if (stopped === true) {
       this.owners.delete(sessionId)
       return true
     }