v0.6.0

v0.6.0 — Command Registry Refactor

This release is an internal architecture refactor with no new
user-facing commands or flags. All existing commands work exactly
as before, with one deliberate exception noted below.

Changed

• Replaced the hardcoded if/elif command dispatch in __main__.py
  and the manually-repeated subparser setup in cli.py with a
  class-based command registry (commands/). Each command now
  defines its own arguments and execution logic in one place,
  conforming to a shared Command interface.
• This lays the groundwork for the upcoming v0.7.0+ commands
  (add, remove, update, doctor, etc.) without further
  churn to the dispatch layer.

Fixed

• repopy init now correctly returns a non-zero exit code when
  initialization fails. Previously, a failed init (without
  --link) would still exit with code 0, incorrectly reporting
  success to scripts or CI pipelines checking the exit status.

Notes

• No flags, defaults, or command behavior changed otherwise.
• Full test suite (unit + registry integrity) and mypy/ruff checks
  pass clean.

Full Changelog: v0.5.0...v0.6.0