v0.6.1

Added

• Short run refs (Docker-style). Every command that takes a run id (status, attach,
  resume, resolve, stop, delete, archive) now accepts a partial — the tail after the
  last - (e.g. a1b2, or as few chars as stay unique). Full ids still work; an ambiguous ref
  fails listing the candidates. New bmad-auto list (alias ls) prints each run/sweep with its
  short ref, type, and status.
• Flexible --story selection. bmad-auto run --story now takes more than the exact full
  key: an epic+number (--epic 3 --story 1, --story 3-1, or --story 3.1) or a slug fragment
  (--story user-auth). Full keys still work. Mismatches are caught before the run launches with a
  targeted error — no match, ambiguous slug, or matched-but-not-actionable.