chore: ignore Python __pycache__ (stray automation client cache)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitignore

@@ -28,3 +28,7 @@ build-dir/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
+
+# Python bytecode
+__pycache__/
+*.pyc