0.31.0: llama.cpp and catalog, unbundled

LlamaBarn used to bundle the llama.cpp engine inside the app. Now it shares one install with your command line: if you already have llama.cpp the app uses it, and if the app installs it you have it in your terminal too.

• Uses an existing llama.cpp from the install script at https://llama.app or Homebrew if you have one
• Shows the in-use llama.cpp build in the footer
• Ships as a 1.6 MB .dmg (down from 7 MB)

We've also replaced the built-in catalog. Instead of a fixed list in the app, a new "Recommended for your Mac" section suggests models that fit, to get you started. For browsing, there's now a curated catalog at https://llama.app that's more up to date and easier to maintain.

Heads-up: a future update will rename LlamaBarn to Llama. It updates automatically and your models and settings carry over. Two things to know if you connect to the app: the local server will move to port 8080 (from 2276) to match llama.cpp's default, and llamabarn:// deep links will become llama://.