bd has 70+ commands, which can be overwhelming for human users who just
want to track issues. The new `bd human` command displays a curated list
of ~15 essential commands organized by workflow:
- Working With Issues: create, list, show, update, close, reopen, comment
- Finding Work: ready, search, status, stats
- Dependencies: dep add/remove/tree, graph, blocked
- Setup & Sync: init, sync, doctor
- Getting Help: quickstart, help, --help
Also includes quick examples showing common workflows.
Changes:
- Add cmd/bd/human.go with curated help output
- Add "human" to noDbCommands list in main.go (no database needed)
