Optimize file streaming render with content pool pattern to prevent duplicate rendering and add streaming status indicators

Refactor output handler system and improve file operation tools.

Merge pull request #30 from RobustH/main

Merge remote-tracking branch 'origin/main'

feat(knowledge): reconstruct search system and introduce Full-Text Search (FTS)

feat(knowledge): implement codebase indexing and RAG-based context injection

Merge pull request #27 from xiaonieli7/main

refactor(knowledge): optimize splitter architecture and service logic

feat: add knowledge base AI integration (hooks & tools)

feat: refactor document splitter architecture

feat: implement knowledge base module core features

feat: Add Long-Term Memory feature

Merge branch 'spring-ai-alibaba:main' into main

Merge pull request #29 from LM20230311/main

Merge branch 'show-main'