feat(etl): stable pipeline, exception registry in SQLite, multi-pass aggregation and db_cli

core/connection.py

@@ -0,0 +1,27 @@
+"""
+===============================================================================
+FILE: core/connection.py
+PROJECT: SCUD Orion AI (Unified Architecture)
+ROLE: Единый менеджер подключений к базе данных SQLite (WAL mode, timeouts).
+===============================================================================
+"""
+
+import os
+import sqlite3
+from config import DATA_DIR
+
+DB_PATH = os.path.join(DATA_DIR, "scud_orion_ai.db")
+
+
+def get_connection(row_factory: bool = False) -> sqlite3.Connection:
+    """
+    Создает оптимизированное подключение к SQLite.
+    row_factory=True возвращает sqlite3.Row для доступа к полям по имени.
+    """
+    conn = sqlite3.connect(DB_PATH, timeout=30.0)
+    if row_factory:
+        conn.row_factory = sqlite3.Row
+    conn.execute("PRAGMA foreign_keys = ON;")
+    conn.execute("PRAGMA journal_mode = WAL;")
+    conn.execute("PRAGMA synchronous = NORMAL;")
+    return conn