The status filter was treating 'all' as a literal status value instead of
a special case meaning 'show all statuses'. This caused the SQL query to
filter for 'WHERE status = all' which matched no issues.
Fixed by checking if status is 'all' and skipping the filter in that case.
- Fix list.go to skip status filter when status == 'all'
- Update CHANGELOG with fix details
- All tests pass