feat：Enhance RAG service and unify knowledge retrieval functionality#425

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Dallas98 merged 9 commits intomainfrom

Mar 12, 2026

Commits on Mar 9, 2026

feat: update LightRAG integration and improve RAG service functionality
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Commits on Mar 11, 2026

feat: implement unified retrieval service for knowledge base queries
Dallas98
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feat: enhance file handling and RAG processing with utility functions and improved logging
Dallas98
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