feat: expose codex thread action capabilities

tests/local-agent-codex-app-server-runner.test.mjs

@@ -114,6 +114,15 @@ test("codex app-server discovery includes governance and MCP summaries without l
     latestTurnStatus: "running",
     latestTurnUpdatedAt: "2026-06-03T08:21:00.000Z",
   });
+  assert.deepEqual(metadata.threadActionSummary, {
+    actionCount: 11,
+    lifecycleActionCount: 5,
+    metadataActionCount: 2,
+    liveTurnActionCount: 2,
+    shellActionAvailable: true,
+    userInitiatedOnly: true,
+    labels: ["归档", "恢复", "分叉", "压缩", "回滚", "改名", "元数据", "活跃干预", "中断", "Shell", "取消订阅"],
+  });
 
   const serialized = JSON.stringify(metadata);
   assert.equal(serialized.includes("sk-secret-should-not-leak"), false);