Promote agent output to Google Drive

Agent work goes through a staging flow so half-finished output never lands on shared drives. Draft work lives in ~/recommand/private/runs/, reviewed output moves to ~/recommand/private/promote/, and this skill copies it into ~/recommand/gdrive/shared/<area>/... where rclone's bisync timer pushes it to Google Drive within 10 minutes.

The shared drive follows the Johnny Decimal structure:

• Areas — XX-XX-name/ (top-level, one per Google Shared Drive)
• Categories — XX-name/ inside an area
• IDs — XX.NN-slug/ inside a category, the lowest-numbered level where files live

Files always live inside an ID folder, never loose in a category. A regenerated index of every ID lives at ~/recommand/gdrive/shared/index.md.

Areas

Source of truth: ~/recommand/bin/drives.conf.