- Add MODEL_METADATA config for Ollama models with descriptions and modality
- Update default model to gemma3:4b
- Show model descriptions in ModelSelector and ComparisonSelector
- Add docs/OLLAMA_MODELS.md with instructions for adding new models
- Document external 4TB SSD setup in MAC_MINI_SERVER.md
- Add gemma3:12b, gemma3:27b, qwen2.5-coder:14b to model registry