138890b9d2
- src/ollama-client.ts: Detect HTTP 404 on /api/chat and throw a descriptive ApiError with the model name and the exact ollama pull command needed. - src/error-handler.ts: For API_ERROR type, return the error message directly instead of prefixing with 'API error: ', so the user-friendly 404 message is shown cleanly in the Obsidian notice. - tests/ollama-client.test.ts: Update 404 assertions to match the new descriptive error message.