Add Mistral.ai provider and checkbox-style settings menu

Restyle sidebar with Neon card layout, refine buttons and labels

Add AI-completed vs exact role generation style toggle

Simplify model selection: single-click to reuse, replace oldest on overflow

Add response timing, chat stats, and role prompt viewer to settings

Rebrand UI with Neon.ai header, sidebar styling, expert personas, and UX improvements

Add speed-priority setting with 5s racing fallback for faster responses

Add responsive design for phone and tablet screens

Replace orchestrator modal with sub-menu to fix backdrop-filter containment bug

Add HuggingFace Spaces deployment with OAuth and rate limiting

Add freeform persona input mode with file upload and Developer menu toggle

Add Developer menu with orchestrator picker, download buttons, and LLMChats2-style dropdown

Initial commit: LLMChats3 - LLM conversation app with React + FastAPI, persona config, orchestrated conversation lifecycle, collapsible sidebar accordions, stop button, and export capabilities