Major software update + PCB testing

• Found out yesterday that Ollama is just the whole UI and simplificator of use for the C library llama.cpp
• And turns out there’s a python wrapper for that library, llama-cpp-python, which has two advantages over Ollama:
  • Faster
  • Way more flexible, we can get every last bit of performance from the rpi5
• So I updated ai.py with this new feature, there are more settings than Ollama for optimizing performance for CPU-only (4 cores) which is great, however I had to download a .gguf from Hugging Face and accidentally ended up being given access to a repository for the model?! so i can now propose changes to that repo, for some reason…
• Fixed a typo which would’ve raised a TypeError in main.py
• Made it so the second button shuts down the Pi safely
• Wrote another entry in JOURNAL.md, where I soldered and tested the prototype PCBs I ordered from JLCPCB