Add `ensureOllamaAvailable` function to lib/ollama.ts for checking and waiting for Ollama server health with configurable timeout.
Integrate the check in GET /api/ollama/models route with 3s timeout to prevent UI blocking, and in POST /api/ollama/pull route with 20s timeout to ensure availability before pulling models.
Update ChatContainer to always render ModelDropdown for better UX when no model is selected.
Evandro Fonseca Junior
7b2386876a