Replace mail-based handoff system with pinned beads that persist
across sessions. This fixes the issue where handoff messages get
closed before successors can read them.
Changes:
- beads: Add StatusPinned constant and handoff functions:
- HandoffBeadTitle() for well-known naming
- FindHandoffBead() to locate role handoff bead
- GetOrCreateHandoffBead() to ensure bead exists
- UpdateHandoffContent() to set handoff message
- ClearHandoffContent() to reset after reading
- cmd/handoff: Update to use pinned beads instead of mail
- sendHandoffMail() now updates pinned bead content
- cmd/prime: Display handoff content on startup
- outputHandoffContent() reads and shows handoff bead
- cmd/rig: Add reset command with --handoff flag
- gt rig reset --handoff clears handoff content
Generated with Claude Code
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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