- generate cache registry module from command list and load it at startup - add pj completion sync (-s) with optional help and restart behavior - keep missing-cache fallback via noop module and preserve cache ignore rules
- add pj completion command to clone/update nu_scripts cache - load fixed custom-completions for git/ssh/cargo/uv/rustup from cache - ignore nushell/cache contents in git while keeping placeholder .gitignore - source pj_completions at startup and align prompt indicators/newline behavior