fix: preserve shell-ready Codex resume delivery

src/shared/tui-agent-resume-startup.ts

@@ -64,6 +64,7 @@ export function buildAgentResumeStartupPlan(args: {
     expectedProcess: TUI_AGENT_CONFIG[args.agent].expectedProcess,
     followupPrompt: null,
     launchConfig,
+    ...(args.agent === 'codex' ? { startupCommandDelivery: 'shell-ready' as const } : {}),
     ...(Object.keys(applied).length > 0 ? { sessionOptions: { ...applied } } : {}),
     ...(args.agentEnv ? { env: { ...args.agentEnv } } : {})
   }

src/shared/tui-agent-startup.test.ts

@@ -591,6 +591,7 @@ describe('tui agent startup plans', () => {
     })
 
     expect(plan?.launchCommand).toBe("codex 'resume' 's1'")
+    expect(plan?.startupCommandDelivery).toBe('shell-ready')
   })
 
   it('quotes Windows resume argv for cmd.exe when shell is cmd', () => {