New /models layout
Replaces CarbonTools and related Carbon icons with Lucide equivalents throughout the UI, updating imports and usage in Svelte components. Updates Hugging Face organization avatar URLs to the new /api/avatars/{org} endpoint in both frontend and backend code. Adds new models to dev and prod YAML configs, and improves the models page layout and filtering. Also updates dependencies to include @iconify-json/lucide and the latest @sinclair/typebox.
