fix(test): Fix hunk filtering on MacOS and update covbadge

[BakerNet]

Covbadge is out of date on main and hunk filtering breaks on MacOS

[github-actions]

Codeowners approval required for this PR:

• ✅ @zbedforrest or @asyncawaitpromise

[greptile-apps]

Confidence Score: 5/5

[Medium risk] Fixes symlink resolution in the hunk filtering logic.

The PR appears safe to merge based on the changes since the previous review.

Summary

The app now resolves symlinks in the longest existing part of a hook path, so missing paths keep the canonical path of their parent folders. The README coverage badge changes from 83.6% to 83.7%.

• Hook paths with missing final files keep symlinks from their existing parents.
• The README shows the updated coverage figure.

_{Reviews (2) · Last reviewed commit: "Merge branch 'main' into fix/test-should..."}

[asyncawaitpromise]

lgtm