完善测试：pytest 套件（路由器/工具循环/WS全链路/投递/PG集成）

- tests/conftest.py: 内存版 FakeDB 复刻 db.py 全部签名，绕过 lifespan 的测试应用
- test_chat_flow.py: WebSocket 全链路（回声/路由信号落库/档案/慢信/连续天数）
- test_delivery.py: 事件/每日任务/关怀投递（在线与离线）、天气工具城市链、system prompt 注入
- test_router.py: 小模型路由清洗（去重/丢过去事件/非法作息/500优雅降级/无模型空判定）
- test_tool_loop.py: 原生工具调用循环（喂结果/超轮次强制收尾/坏参数）
- test_pure.py: 纯逻辑（连续天数/哈希槽位/时间间隔/模板/向量）
- test_db_pg.py: PG 集成测试，无 PG_DSN 自动跳过，配好即真实跑库
- 旧散装脚本移除；tools_live/ws_client/tui_smoke 保留为手动脚本

tests/test_delivery.py

@@ -0,0 +1,158 @@
+"""投递与工具执行测试（FakeDB + stub 工具）"""
+import json
+import time
+from datetime import datetime, timedelta
+
+from app import main
+
+
+class _State:
+    name = "CONNECTED"
+
+
+class FakeWS:
+    client_state = _State()
+
+    def __init__(self):
+        self.sent = []
+
+    async def send_text(self, payload):
+        self.sent.append(payload)
+
+    def last_text(self):
+        """最后一条主动消息的纯文本（服务端 JSON 转义了中文，要解一下）"""
+        return json.loads(self.sent[-1])["text"]
+
+
+async def test_one_shot_event_offline_stays_pending(fdb, offline):
+    ev = {"id": 1, "session": "s1", "kind": "alarm",
+          "fire_at": time.time(), "text": "起床", "repeat": "once"}
+    ok = await main.deliver_event(ev)
+    assert ok is False
+    assert fdb.events == []  # 没投递就不写历史、不标完成
+
+
+async def test_one_shot_event_online_delivers(fdb, offline):
+    ws = FakeWS()
+    main.connected.setdefault("s1", set()).add(ws)
+    try:
+        ev = {"id": 2, "session": "s1", "kind": "reminder",
+              "fire_at": time.time(), "text": "喝水", "repeat": "once"}
+        ok = await main.deliver_event(ev)
+        assert ok is True
+        assert "喝水" in ws.last_text()
+        # 主动消息写进了历史
+        assert [h["role"] for h in fdb.history] == ["assistant"]
+    finally:
+        main.connected.get("s1", set()).discard(ws)
+
+
+async def test_daily_event_marks_fired_not_done(fdb, offline):
+    ws = FakeWS()
+    main.connected.setdefault("s1", set()).add(ws)
+    try:
+        await fdb.add_event("s1", "reminder", time.time() + 3600, "吃药",
+                            "daily", 22 * 60)
+        ev = fdb.events[0]
+        ok = await main.deliver_daily_event(ev)
+        assert ok is True
+        assert "吃药" in ws.last_text()
+        assert ev["last_fired"] == datetime.now().strftime("%Y-%m-%d")
+        assert ev["status"] == "pending"  # 每天还要再响
+    finally:
+        main.connected.get("s1", set()).discard(ws)
+
+
+async def test_care_delivery(fdb, offline):
+    cid = await fdb.add_care("s1", "emotion", "昨天心情不好",
+                             time.time() - 10)
+    ok = await main.deliver_care({"id": cid, "session": "s1",
+                                  "kind": "emotion", "note": "昨天心情不好"})
+    assert ok is False  # 没人在线，保持 pending
+
+    ws = FakeWS()
+    main.connected.setdefault("s1", set()).add(ws)
+    try:
+        ok = await main.deliver_care({"id": cid, "session": "s1",
+                                      "kind": "emotion", "note": "昨天心情不好"})
+        assert ok is True
+        assert "心情" in ws.last_text()
+        assert fdb.care[0]["status"] == "done"
+    finally:
+        main.connected.get("s1", set()).discard(ws)
+
+
+async def test_routine_echo_greeting(fdb, offline):
+    r = {"session": "s1", "label": "到校", "minute": 7 * 60 + 40,
+         "kind": "inferred", "evidence": 3}
+    text = await main.routine_message(r)
+    assert "到学校" in text
+
+
+async def test_weather_tool_city_chain(fdb, offline, monkeypatch):
+    calls = []
+
+    async def fake_weather(city):
+        calls.append(city)
+        return f"{city} 晴 25°C"
+
+    monkeypatch.setattr(main.tools, "get_weather", fake_weather)
+
+    # 三层都推不出 -> UNKNOWN_CITY，且不假装有天气
+    out = await main.execute_tool("s1", "get_weather", {})
+    assert out.startswith("UNKNOWN_CITY") and calls == []
+
+    # 路由器的城市提示 -> 查询并记住
+    out = await main.execute_tool("s1", "get_weather", {}, city_hint="杭州")
+    assert "杭州" in out and calls == ["杭州"]
+    assert await fdb.get_meta("s1", "city") == "杭州"
+
+    # 模型显式给了城市 -> 优先用，并覆盖记住的城市
+    out = await main.execute_tool("s1", "get_weather", {"city": "北京"})
+    assert calls[-1] == "北京"
+    assert await fdb.get_meta("s1", "city") == "北京"
+
+    # 之后不带城市 -> 用最近一次记住的
+    out = await main.execute_tool("s1", "get_weather", {})
+    assert calls[-1] == "北京"
+
+
+async def test_tool_executor_other_tools(fdb, offline, monkeypatch):
+    async def fake_news(q):
+        return f"新闻:{q}"
+
+    async def fake_search(q):
+        return f"搜索:{q}"
+
+    monkeypatch.setattr(main.tools, "get_news", fake_news)
+    monkeypatch.setattr(main.tools, "web_search", fake_search)
+    assert await main.execute_tool("s1", "get_news", {}) == "新闻:今日热点"
+    assert await main.execute_tool("s1", "web_search",
+                                   {"query": "量子"}) == "搜索:量子"
+    assert await main.execute_tool("s1", "web_search", {}) == "缺少搜索词。"
+    assert "未知工具" in await main.execute_tool("s1", "nope", {})
+
+
+async def test_system_prompt_includes_lore_and_relevant(fdb, offline):
+    await fdb.upsert_lore("s1", "诞生", "小暖是用户亲手造的")
+    prompt = await main.system_prompt(
+        "s1", [{"text": "用户喜欢打篮球"}])
+    assert "既定事实" in prompt
+    assert "小暖是用户亲手造的" in prompt
+    assert "用户喜欢打篮球" in prompt
+
+
+async def test_compose_views(fdb, offline):
+    # 记忆
+    await fdb.add_memories("s1", ["用户叫小明"], None)
+    text = await main.compose_view("s1", "memories")
+    assert "用户叫小明" in text
+    # 空记忆的说法
+    text = await main.compose_view("s2", "memories")
+    assert "还不太认识你" in text
+    # 身世
+    text = await main.compose_view("s2", "lore")
+    assert "一个字都不会忘" in text
+    # 时间表空表
+    text = await main.compose_view("s2", "timetable")
+    assert "时间表还空着" in text