MORE BRAINS = FASTER JARVIS
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1. Open JARVIS > SETTINGS > Brains.
2. Paste a free key next to a brain, press Save, then Test. A green dot = ready.
   - Groq        console.groq.com/keys      (fastest)
   - Cerebras    cloud.cerebras.ai
   - Mistral     console.mistral.ai
   - OpenRouter  openrouter.ai/keys         (has free models)
   - Gemini      aistudio.google.com/apikey (also does camera + screen vision)
   - Local       install Ollama (ollama.com) and run a model. No key.
   - Custom      any OpenAI style service: key + base URL + model name.
3. Pick a mode:
   Auto  = quick brain for chat, Gemini for PC jobs (best)
   Fast  = the quickest brain for everything
   Smart = Gemini first
If one brain fails or hits its limit, JARVIS switches to the next one by himself.
The Connections card shows which brain answered and how fast.
Keys are saved in keys.txt next to app.py. Never share that file.
