架构重构：拆分 core/ops/DBManager，统一 SQLite 锁，DEB 改进，新增注意力模型

- web/core.py 858→236行，拆出 schemas/middleware/auth/diagnostics
- ops_api.py 2876→4个 domain 模块 (users/payments/health/config)
- DBManager Supabase HTTP 调用提取到 SupabaseAdminClient
- 新增 LockedSQLiteConnection 统一多进程读写锁
- 新增 WeatherCacheManager 替代 12 个独立缓存字典
- METAR 缓存迁移至统一缓存管理器
- analysis_service 提取 _build_intraday_meteorology 到独立模块
- DEB 改进：偏差惩罚、分歧回退、自适应 lookback (MAE ↓12.6%)
- 新增 PyTorch 注意力模型 deb_attention.py (数据积累后启用)
- 新增 torch 到 requirements.lock

web/realtime_event_store.py

@@ -9,6 +9,7 @@ from datetime import datetime, timedelta, timezone
 from typing import Any, Dict, Optional, Set
 
 from src.database.db_manager import DBManager
+from src.database.sqlite_connection import connect_sqlite
 from web.realtime_patch_schema import EVENT_TYPE
 
 
@@ -72,10 +73,7 @@ class RealtimeEventStore:
         self._ensure_table()
 
     def _connect(self) -> sqlite3.Connection:
-        conn = sqlite3.connect(self.db_path, timeout=10)
-        conn.execute("PRAGMA journal_mode=WAL")
-        conn.execute("PRAGMA busy_timeout=5000")
-        return conn
+        return connect_sqlite(self.db_path, timeout=10)
 
     def _ensure_table(self) -> None:
         db_dir = os.path.dirname(self.db_path)