fix: resolve linting and formatting issues for CI

- Use contextlib.suppress instead of try/except/pass (SIM105)
- Prefix unused fixture arguments with underscore (ARG002)
- Replace asyncio.TimeoutError with TimeoutError (UP041)
- Apply ruff formatting to all files

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

tests/test_setup.py

@@ -10,11 +10,7 @@ def test_version() -> None:
 
 def test_import_modules() -> None:
     """Test that all submodules can be imported."""
-    from polymarket_insider_tracker import ingestor
-    from polymarket_insider_tracker import profiler
-    from polymarket_insider_tracker import detector
-    from polymarket_insider_tracker import alerter
-    from polymarket_insider_tracker import storage
+    from polymarket_insider_tracker import alerter, detector, ingestor, profiler, storage
 
     # Just verify imports work
     assert ingestor is not None