v0.2.1.1

Release date:  2025.11.13

## Highlights

This release improves the stability and flexibility of UltraRAG. Retriever and index are now fully decoupled, with added support for Milvus and Faiss. The VisRAG 2.0 pipeline is newly supported, and compatibility with chonkie 1.4.0+ has been updated. Several pipelines, including Search-o1 and WebNote, have been fixed. User experience is improved through progress-bar support during document parsing, a script for saving retrieval results, and zoom-in support for images in the case-study UI. The README now includes a clearer Docker usage guide.

## What's Changed

1.  Decoupled Retriever and Index with Milvus & Faiss Support: The retriever and vector index are now fully decoupled, with native support for both Milvus and Faiss, providing greater flexibility for large-scale corpus construction and high-performance retrieval.  by  @mssssss123 #122 
2. Added Full Pipeline Support for VisRAG 2.0: UltraRAG now natively supports the VisRAG 2.0 Pipeline, enabling stronger multimodal document understanding and integrated image–text reasoning.  by @mssssss123 #115  
3. Upgraded Compatibility for chonkie ≥ 1.4.0: Updated document-processing modules to be fully compatible with chonkie 1.4.0+, enhancing stability in structured extraction and parsing workflows. by @yinyannlp @mssssss123  #119 #120 
4. Fixed the Search-o1 Pipeline: Resolved critical issues in the iterative search-generation loop, restoring stable functionality for the Search-o1 pipeline. by @mssssss123 #123 
5. Fixed Accuracy Metric Calculation Bug: Corrected inaccuracies in the acc metric computation, ensuring more reliable and consistent evaluation results across benchmarks. by @mssssss123 #127
6. Added Script for Saving Retrieval Results: Introduced a new script to persist retrieved content, improving debugging workflows, visualization, and error case analysis. by @mssssss123 #129 
7. Fixed Bugs in the WebNote Pipeline: Addressed multiple issues in the WebNote pipeline to improve robustness when processing webpage-like or long-form content. by @mssssss123 #128 
8. Enhanced Case Study UI with Image Zoom-In Support: The case-study interface now supports zoomable images, offering a significantly improved multimodal inspection and visualization experience. by @mssssss123 #130 
9. Added Progress Bar for Document Parsing: Document parsing now displays a progress bar, providing clearer feedback during long document processing. by @mssssss123 #133 
10. Updated README with Complete Docker Usage Guide: The README has been updated with a comprehensive Docker usage section, making deployment easier and more accessible. by @xhd0728 #131