多用户系统 + Admin 角色权限 + Web/TUI 同步 + 构建集成

本轮实现功能：
1. 多用户隔离：每个用户独立 config.json + graph.db
2. TUI 登录页 + 旧版自动迁移（core/migrate.py）
3. Admin/User 角色体系（core/embedded_db.py）
4. Web 后台管理 API（userinfo + admin CRUD）
5. Web 设置页用户管理区（仅 admin 可见）
6. TUI 侧栏配置区权限同步（非 admin 隐藏 Web 服务设置）
7. Web 服务打包为独立二进制（trulymem-web）
8. 双入口 PyInstaller 构建脚本（TUI + Web）
9. 活动记录器（core/activity_recorder.py）
10. 静态页面模板（登录/设置/首次引导）

core/activity_recorder.py

@@ -0,0 +1,41 @@
+import sqlite3
+import time
+from typing import List, Dict, Optional
+
+
+class ActivityRecorder:
+    """记录 AI 对图数据库的操作到内存 SQLite"""
+
+    def __init__(self):
+        self.conn = sqlite3.connect(":memory:", check_same_thread=False)
+        self.conn.execute("CREATE TABLE activities (id INTEGER PRIMARY KEY AUTOINCREMENT, timestamp REAL, action TEXT, tool_name TEXT, entity TEXT, detail TEXT)")
+        self.conn.commit()
+
+    def record(self, action: str, tool_name: str, entity: str, detail: str = "") -> None:
+        self.conn.execute("INSERT INTO activities (timestamp, action, tool_name, entity, detail) VALUES (?, ?, ?, ?, ?)",
+                          (time.time(), action, tool_name, entity, detail))
+        self.conn.commit()
+
+    def get_all(self) -> List[Dict]:
+        cursor = self.conn.execute("SELECT id, timestamp, action, tool_name, entity, detail FROM activities ORDER BY id")
+        rows = cursor.fetchall()
+        return [{"id": r[0], "timestamp": r[1], "action": r[2], "tool_name": r[3], "entity": r[4], "detail": r[5]} for r in rows]
+
+    def clear(self) -> None:
+        self.conn.execute("DELETE FROM activities")
+        self.conn.commit()
+
+    def get_summary(self) -> Dict[str, int]:
+        cursor = self.conn.execute("SELECT action, COUNT(*) FROM activities GROUP BY action")
+        rows = cursor.fetchall()
+        return {r[0]: r[1] for r in rows}
+
+
+_recorder: Optional[ActivityRecorder] = None
+
+
+def get_recorder() -> ActivityRecorder:
+    global _recorder
+    if _recorder is None:
+        _recorder = ActivityRecorder()
+    return _recorder