Also updated CONFIG.md to clarify mass delete threshold requires >5 issues (bd-in6).
The string(rune('0'+i)) pattern produces incorrect characters when i >= 10.
Changed to strconv.Itoa(i) for reliable conversion.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Test AddIssueComment basic functionality
- Test GetIssueComments retrieval and ordering
- Test edge cases (empty, nonexistent issues)
- Test dirty flag marking
- Test comment isolation across issues
Improves sqlite package coverage: 69.1% → 70.6%