v3.2.1 - Z.AI/GLM Model Routing Fix - Add Z.AI provider routing for GLM models (glm-4.5, glm-4.6, etc.) - Fix Settings UI integration for Z.AI API key storage - API keys stored via Settings now work correctly with chat - Add model parameter to chat endpoints for provider detection - get_zai_token() now reads from user_api_keys table (Settings UI storage) - Falls back to provider_connections table for legacy compatibility - Frontend sends selected model to backend for correct routing