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