fix: resolve remaining ruff lint and mypy type errors

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/services/domains/runs/summary.py

@@ -1,11 +1,11 @@
 from __future__ import annotations
 
-from typing import Any
+from typing import Any, cast
 
 
 def _safe_int(value: object, default: int = 0) -> int:
     try:
-        return int(value)
+        return int(cast(Any, value))
     except (TypeError, ValueError):
         return default