v0.3.0 — convenience

[0.3.0] - 2026-06-13

Convenience pass. No breaking changes.

Added

• validate (alias doctor) — sanity-checks the registry: every service
  has a path, local paths and listed compose files exist, and node aliases
  look defined in ~/.ssh/config. Remote path/file existence is not checked
  (would need an ssh round-trip). Exits non-zero if any problem is found.
• Color output and global flags — ok / warn / err messages are
  colored; color auto-disables when NO_COLOR is set, --no-color is passed,
  or stderr is not a terminal. --quiet / -q silences info/ok/warn (errors
  are always shown). Both flags may appear anywhere on the command line.

Changed

• edit now tries $EDITOR, $VISUAL, nano, vi, vim in order, and
  if none is available prints the registry path instead of failing silently.
• self-update explains a failed fast-forward (local commits/changes) and
  how to recover, instead of surfacing a raw git error.