- Populate labels in bd list human-readable output (direct mode)
- Populate labels in bd list JSON output (direct and daemon modes)
- Populate labels in daemon RPC handlers (handleList, handleShow)
- handleShow now returns full IssueDetails with labels/deps/dependents
- Labels displayed with 'Labels: [label1, label2]' format
Closes bd-164
Amp-Thread-ID: https://ampcode.com/threads/T-30cd607d-c509-4a8c-9cac-c2aea2ad75c6
Co-authored-by: Amp <amp@ampcode.com>