v0.5.0

Changed

• Command rename: wl up → wl start (clearer intent, wl stop unchanged)
• Clearer messaging: tips (*) show features, actions (→) tell you what to do next

Added

• wl doctor now works inside container
• Docker image availability check before wl start

Fixed

• wl ps shows current project even when no containers running
• Works on stock macOS without coreutils (fixed port check timeout)
• Better error messages for config file issues