* Update JSON example for multi_apps: change snapshot name and specify presenter in instructions for clarity.
* Enhance PDF image comparison in chrome.py by adding existence checks for input files and improving image extraction logic. Introduce image hashing for similarity scoring with a configurable threshold. Update docs.py to support fuzzy matching in DOCX file comparisons, allowing for similarity scoring based on text content. Modify example JSON to enable fuzzy matching option.
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Co-authored-by: yuanmengqi <yuanmengqi@mail.ustc.edu.cn>