Enhance repository watcher with debounce and staged file check

[adripo]

Introduce a debounce mechanism to the repository watcher and add a check for staged files before triggering the handler.

fix #12

[D3vanshC]

Hey @adripo , thanks for the PR — the debounce and staged file check work well.
However, I noticed that onFilesStaged() still gets triggered right after a git commit, which shouldn’t happen since commits rewrite .git/index and fire another change event.

You might want to add a small safeguard to ignore .git/index updates caused by commits. One way is to detect recent HEAD changes using git rev-parse HEAD and skip the trigger for a short cooldown (e.g., 1s) whenever the commit hash changes. That should ensure the watcher only reacts to actual git add operations.

Everything else in the update looks good.

[adripo]

@D3vanshC Thanks for the check and the hint. I just updated the script to ignore .git/index updates caused by commits.