feat: enable SQLite WAL mode for all databases (AGI ticket #1) (#153)

src/infrastructure/models/registry.py

@@ -67,8 +67,9 @@ def _get_conn() -> sqlite3.Connection:
     DB_PATH.parent.mkdir(parents=True, exist_ok=True)
     conn = sqlite3.connect(str(DB_PATH))
     conn.row_factory = sqlite3.Row
-    conn.execute(
-        """
+    conn.execute("PRAGMA journal_mode=WAL")
+    conn.execute("PRAGMA busy_timeout=5000")
+    conn.execute("""
         CREATE TABLE IF NOT EXISTS custom_models (
             name            TEXT PRIMARY KEY,
             format          TEXT NOT NULL,
@@ -81,18 +82,15 @@ def _get_conn() -> sqlite3.Connection:
             default_temperature REAL NOT NULL DEFAULT 0.7,
             max_tokens      INTEGER NOT NULL DEFAULT 2048
         )
-        """
-    )
-    conn.execute(
-        """
+        """)
+    conn.execute("""
         CREATE TABLE IF NOT EXISTS agent_model_assignments (
             agent_id    TEXT PRIMARY KEY,
             model_name  TEXT NOT NULL,
             assigned_at TEXT NOT NULL,
             FOREIGN KEY (model_name) REFERENCES custom_models(name)
         )
-        """
-    )
+        """)
     conn.commit()
     return conn