Problem

Folder display names only used path.basename(), so when a local directory name differed from the GitHub repo name, the dropdown showed one name and the sidebar showed another.

Closes #1283

Changes

1. Add getDisplayName that appends remote repo name when it differs from the local dir (e.g. ph-tour-demo (hogotchi))
2. Extract shared normalizeRepoKey helper to strip .git suffixes consistently
3. Use normalizeRepoKey in sidebar folder matching to fix .git suffix mismatches
4. Use folder.name instead of group.name in sidebar labels for consistency
5. Add four unit tests covering suffix stripping, mismatch, match and case-insensitive match

How did you test this?

Manually