* feat: Add Ollama embedding support for local embedding models
* docs: Add clear documentation for Ollama embedding usage
* feat: Enhance Ollama embedding with better error handling and concurrent processing
- Add intelligent model validation and suggestions (inspired by OllamaChat)
- Implement concurrent processing for better performance
- Add retry mechanism with timeout handling
- Provide user-friendly error messages with emojis
- Auto-detect and recommend embedding models
- Add text truncation for long texts
- Improve progress bar display logic
* docs: don't mention it in README