add: 补充回归测试（build 开关/资源档位、日志 fork、插件迁移与依赖清单、父进程死亡、worker 疑似失联）

test/test_worker_suspect.py

@@ -0,0 +1,91 @@
+"""
+worker 超时冷静期（派发负反馈）测试
+
+背景：半死副本（被 SIGKILL 的实例留下的孤儿 worker 等）只要还在服务发现里，
+每次被随机选中都会白吃一整轮超时（默认 2s）；worker_manager 只做"本次请求换副本
+重试"，没有跨请求记忆，于是 2 秒惩罚反复发生（实测一轮 31 条超时日志）。
+
+修复：WorkerManager.mark_worker_suspect 给超时/无回复的副本记一段冷静期
+（_suspect_until，TTL 30s），三条选副本路径（get_worker / _pick_from_instance /
+_pick_other_worker）都优先跳过它，全在冷静期时退回全集（宁慢不缺）。
+
+验证：
+  1. 标记后的副本跨请求不再被选中
+  2. 全部候选都处于冷静期时退回全集（不饿死）
+  3. TTL 到期自动恢复
+  4. 过期项会被清理（防长期运行膨胀）
+  5. 换副本路径同样避开冷静期
+  6. 源码兜底：超时/无回复分支确实调用了标记
+
+运行: uv run python test/test_worker_suspect.py
+"""
+import asyncio
+import sys
+import time
+from pathlib import Path
+
+ROOT = Path(__file__).parent.parent
+sys.path.insert(0, str(ROOT / "gateway" / "src"))
+
+from chongming.app.core.worker_manager import WorkerManager  # noqa: E402
+
+failures = []
+
+
+def check(name, cond, detail=""):
+    status = "PASS" if cond else "FAIL"
+    print(f"[{status}] {name}" + (f" — {detail}" if detail else ""))
+    if not cond:
+        failures.append(name)
+
+
+# 跳过 __init__（依赖 zenoh 会话/缓存），只装配选副本所需的字段
+m = WorkerManager.__new__(WorkerManager)
+m._suspect_until = {}
+m._workers_cache = {"demo": ["w1", "w2", "w3"]}
+m._local_workers = {}
+
+
+def sample(fn, n=40):
+    return {asyncio.run(fn()) for _ in range(n)}
+
+
+# ========== 1. 标记后跨请求跳过 ==========
+m.mark_worker_suspect("w1")
+m.mark_worker_suspect("w2")
+picked = sample(lambda: m.get_worker("demo"))
+check("冷静期内的副本不再被选中", picked == {"w3"}, str(picked))
+
+# ========== 2. 全在冷静期 → 退回全集 ==========
+m.mark_worker_suspect("w3")
+picked = sample(lambda: m.get_worker("demo"))
+check("全部处于冷静期时退回全集（不饿死）", picked == {"w1", "w2", "w3"}, str(picked))
+
+# ========== 3. TTL 到期恢复 ==========
+m._suspect_until = {"w1": time.monotonic() - 0.1}
+check("冷静期过期自动恢复", m._filter_suspects(["w1"]) == ["w1"])
+
+# ========== 4. 过期项清理 ==========
+m._suspect_until = {}
+for i in range(40):
+    m.mark_worker_suspect(f"x{i}", ttl=-1.0)  # 立即过期
+check("过期项会被清理（防膨胀）", len(m._suspect_until) <= 32, str(len(m._suspect_until)))
+
+# ========== 5. 换副本路径同样避开 ==========
+m._suspect_until = {}
+m.mark_worker_suspect("w1")
+picked = sample(lambda: m._pick_other_worker("demo", []))
+check("换副本路径同样避开冷静期", picked == {"w2", "w3"}, str(picked))
+
+# ========== 6. 源码兜底：失败分支确实标记 ==========
+src = (ROOT / "gateway" / "src" / "chongming" / "app" / "core" / "worker_manager.py").read_text(
+    encoding="utf-8"
+)
+n = src.count("self.mark_worker_suspect(worker_expr)")
+check("超时/无回复分支都调用了标记", n >= 2, f"{n} 处")
+
+print("\n" + ("=" * 40))
+if failures:
+    print(f"❌ {len(failures)} 项未通过: {failures}")
+    sys.exit(1)
+print("✅ 全部通过")