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_router.py

@@ -0,0 +1,84 @@
+"""小模型路由的离线测试（mock 模型服务，不发真实请求）"""
+import asyncio
+import json
+from datetime import datetime
+
+import httpx
+
+from app import connector
+
+NOW = datetime(2026, 9, 21, 19, 30)
+
+
+def mock_model(content: str):
+    def handler(request: httpx.Request) -> httpx.Response:
+        return httpx.Response(200, json={"choices": [{"message": {
+            "role": "assistant", "content": content}}]})
+    return handler
+
+
+def enable_router(monkeypatch, content=None, status=200):
+    monkeypatch.setattr(connector, "SMALL_KEY", "k")
+    monkeypatch.setattr(connector, "SMALL_MODEL", "m")
+    if status == 200:
+        transport = httpx.MockTransport(mock_model(content or ""))
+    else:
+        transport = httpx.MockTransport(lambda r: httpx.Response(status))
+    monkeypatch.setattr(connector, "_TEST_TRANSPORT", transport)
+
+
+def test_route_full_parse(monkeypatch):
+    raw = json.dumps({
+        "view": "memories",
+        "letter": {"days": 7, "body": "给未来的我：加油"},
+        "negative_mood": True,
+        "city_hint": "杭州",
+        "facts": ["用户叫小明", "用户叫小明", "用户喜欢打篮球"],
+        "events": [{"kind": "alarm", "fire_at": "2026-09-22T07:00:00",
+                    "text": "起床", "repeat": "daily"},
+                   {"kind": "reminder", "fire_at": "2020-01-01T00:00:00",
+                    "text": "过去的应被丢弃"}],
+        "routines": [{"label": "到校", "time": "07:40", "kind": "inferred"},
+                     {"label": "打游戏", "time": "22:00", "kind": "explicit"}],
+        "promises": [{"note": "面试", "due_at": None}],
+        "lore": [{"topic": "诞生", "body": "小暖是用户亲手造的"}],
+    })
+    enable_router(monkeypatch, "好的 " + raw + " (忽略我)")
+
+    sig = asyncio.run(connector.route(
+        "我叫小明，我在杭州，明早7点叫我起床，明天面试", NOW, ["用户叫小明"]))
+
+    assert sig["view"] == "memories"
+    assert sig["letter"] == (7, "给未来的我：加油")
+    assert sig["negative_mood"] is True
+    assert sig["city_hint"] == "杭州"
+    assert sig["facts"] == ["用户喜欢打篮球"]  # 去重 + 已有的不要
+    assert len(sig["events"]) == 1
+    assert sig["events"][0]["kind"] == "alarm"
+    assert sig["events"][0]["repeat"] == "daily"
+    assert sig["events"][0]["fire_at"].day == 22
+    assert sig["routines"] == [{"label": "到校", "minute": 460,
+                                "kind": "inferred"}]
+    assert sig["promises"][0]["note"] == "面试"
+    assert (sig["promises"][0]["due_at"].day,
+            sig["promises"][0]["due_at"].hour) == (22, 18)  # null -> 次日18点
+    assert sig["lore"] == [{"topic": "诞生", "body": "小暖是用户亲手造的"}]
+
+
+def test_route_garbage_returns_empty(monkeypatch):
+    enable_router(monkeypatch, "这不是 JSON")
+    sig = asyncio.run(connector.route("随便", NOW, []))
+    assert sig["view"] is None and sig["facts"] == [] and sig["letter"] is None
+
+
+def test_route_server_error_returns_empty(monkeypatch):
+    enable_router(monkeypatch, status=500)
+    sig = asyncio.run(connector.route("随便", NOW, []))
+    assert sig["view"] is None
+
+
+def test_route_without_model_is_noop(monkeypatch):
+    monkeypatch.setattr(connector, "SMALL_KEY", "")
+    monkeypatch.setattr(connector, "SMALL_MODEL", "")
+    sig = asyncio.run(connector.route("明早7点叫我起床", NOW, []))
+    assert sig["view"] is None and sig["events"] == []