The suggest_labels function now dynamically detects the label naming convention
used in the repository (slash format like Type/Bug or colon-space format like
Type: Bug) instead of hardcoding slash format.
Changes:
- Added _build_label_lookup() to parse and normalize label formats
- Added _find_label() to find actual labels from the lookup
- Updated suggest_labels() to accept optional repo parameter
- Labels are fetched first, then suggestions match actual names
- Supports Efforts/Effort normalization (handles singular/plural)
Fixes issue #73 sub-issue 3: label format mismatch
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
