refactor(worker): move Codex turn logic into CodexAdapter behind AgentRuntime

apps/agent-worker/tests/unit/maintenance-workspace-cleanup.test.ts

@@ -49,6 +49,8 @@ vi.mock('../../src/opencode-session', () => ({
   replyOpenCodePermission: vi.fn(),
 }));
 vi.mock('../../src/runtime/docker', () => ({
+  buildMarkedCommand: vi.fn(() => ['setsid', 'bash', '-lc', '# marker']),
+  killBoxProcessesByMarker: vi.fn(() => Promise.resolve()),
   listWorkspaceContainerNames: vi.fn(() => Promise.resolve([])),
   runExecInContainer: vi.fn(),
   startWorkspaceContainer: vi.fn(),