Centralizes repository context resolution via RepoContext API, fixing bugs where git commands run in the wrong repo when BEADS_DIR points elsewhere or in worktree scenarios.
Analysis found these commands are dead code:
- gt never calls `bd pin` - uses `bd update --status=pinned` instead
- Beads.Pin() wrapper exists but is never called
- bd hook functionality duplicated by gt mol status
- Code comment says "pinned field is cosmetic for bd hook visibility"
Removed:
- cmd/bd/pin.go
- cmd/bd/unpin.go
- cmd/bd/hook.go
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>