- Drop fetchIssueDetail — issue list response already contains all needed fields
- Add tags/issue_tags/pull_tags tables with indexes
- Persist PR and Issue tags during savePull/saveIssue
- Fix issue aggregate field names (total_count/opened_count/closed_count)
- Document tag tables and queries in queries.md
Migrate health analysis from Python scripts to a native Go shortcut
for better performance and single-binary distribution. Remove the
Python collector (fetcher.py) and move schema.sql into shortcuts/health/.