Add `bd compact --dolt` command to run Dolt garbage collection on
.beads/dolt directory. This helps reclaim disk space when using the
Dolt backend, where auto-commit per mutation causes commit history
to grow over time.
Features:
- Runs `dolt gc` in the .beads/dolt directory
- Shows disk space before/after with bytes freed
- Supports --dry-run to preview without running GC
- Supports --json for machine-readable output
- Helpful error messages for missing dolt directory or command
Closes: hq-ew1mbr.14
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Move cleanup, compact, and reset commands under `bd admin` namespace.
Creates hidden aliases for backwards compatibility that show deprecation
notice when used.
- Create cmd/bd/admin.go with parent command
- Create cmd/bd/admin_aliases.go for hidden backwards-compat aliases
- Update cleanup.go, compact.go, reset.go to remove rootCmd.AddCommand
- Update all documentation to use `bd admin <cmd>` syntax
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>