chore: add test file to verify branch/commit/push/PR workflow

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YUKXWX9fFm2YMKfaoqfhCf
e4a21e1240Claude committed on 9/14/2026, 1:44:35 PMparent9e96f80
1 file changedLine totals unavailable