Legacy work-items notice

Active Yoi Ticket storage has moved to .yoi/tickets/.

This directory is intentionally not a live mutable backend. It remains only as a compatibility notice for older references and migration history. Do not create open/, pending/, or closed/ Ticket records here.

Use yoi ticket ..., Ticket tools, or the transitional ./tickets.sh shim from the repository root; all default to .yoi/tickets/.