fix: avoid SQLite lock on fast position poll by skipping DB writes

Co-authored-by: Cursor <cursoragent@cursor.com>

sl_tp_guard.py

@@ -606,12 +606,13 @@ def check_monitors_locally(
     if not is_trading_session():
         return 0
     reconcile_monitors_without_position(conn, mode)
+    conn.commit()
     closed = 0
-    rows = conn.execute(
+    rows = [dict(r) for r in conn.execute(
         "SELECT * FROM trade_order_monitors WHERE status='active'"
-    ).fetchall()
-    for r in rows:
-        mon = dict(r)
+    ).fetchall()]
+    conn.commit()
+    for mon in rows:
         mid = int(mon.get("id") or 0)
         sym = (mon.get("symbol") or "").strip()
         direction = (mon.get("direction") or "long").strip().lower()