fix inbox lifecycle downstream contracts

packages/hooks/hooks-claude/tests/coverage-cases.ts

@@ -110,7 +110,7 @@ export function defineCoverageCases(group: CoverageGroup): void {
       agent.followup(createUserMessage({ content: [{ type: 'text', text: 'go' }], source: { kind: 'user' } }))
       await waitForIdle(ctx, agent)
       expect(existsSync(marker)).toBe(true) // substituted command ran
-    })
+    }, 15_000) // Real agent and hook subprocess startup can exceed Vitest's default under coverage concurrency.
 
     it('warns and honors updatedInput as a no-op (input rewrite deferred)', async () => {
       const d = dir()

packages/hooks/hooks-codex/tests/bridge.spec.ts

@@ -103,7 +103,7 @@ describe('hooks-codex bridge', () => {
 
     expect(adapter.requests).toHaveLength(2)
     expect(JSON.stringify(adapter.requests[1]!.messages)).toContain('keep going: address the goal')
-  })
+  }, 15_000) // Two real hook subprocesses and agent steps need startup and teardown headroom under load.
 
   it('turn cancellation aborts and reaps a running UserPromptSubmit hook before idle', async () => {
     const dir = configDir()

packages/hooks/hooks-codex/tests/coverage-cases.ts

@@ -199,7 +199,7 @@ export function defineCoverageCases(groups: CoverageGroup | readonly CoverageGro
       expect(result?.type === 'tool/result' && result.data.message.content[0].isError).toBe(true)
       expect(result?.type === 'tool/result' && result.data.message.content[0].content.some(b => b.type === 'text' && b.text.includes('downstream-block'))).toBe(true)
       expect(events(agent).some(e => e.type === 'user/message' && e.data.source.kind !== 'user' && e.data.content.some(b => b.type === 'text' && b.text.includes('bridge-note')))).toBe(true)
-    })
+    }, 10_000) // The real hook subprocess needs startup and teardown headroom under full-suite contention.
 
     it('SessionStart additionalContext is injected for the first request', async () => {
       const d = dir()