groove-utilities-memory-log-monthly

# groove-utilities-memory-log-monthly ## Outcome `.groove/memory/monthly/YYYY-MM.md` is created or updated with a roll-up of the month's daily files. Sections cover themes, key outcomes, and learnings at monthly scope. ## Acceptance Criteria - File exists at `.groove/memory/monthly/YYYY-MM.md` after command completes - Themes section identifies major recurring topics from the month - Key outcomes section lists significant completions and milestones - Learnings section synthesises patterns and insights across the month - Content is rolled up from daily files — not duplicated raw detail ## Constraints - Memory path is always `.groove/memory/` - Only run on the last weekday of the month, or when user explicitly requests - Roll up from that month's daily files in `.groove/memory/daily/` - If no daily files exist for the month, note that and exit gracefully - Use template at `skills/groove-utilities-memory-log-monthly/templates/monthly.md` for file structure - If file already exists, update rather than overwrite