* fix(bm25_index): 修正BM25索引计算中的文档长度归一化问题
修复了在计算BM25相似度时对文档长度进行不正确归一化的bug，确保所有查询都能得到准确的相关性评分。
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* refactor(steps): Rename and adjust indexing step logic
- Rename `scan_changes.py` and `reindex.py` to `clear_and_scan.py`
- Update implementation details of `ScanChangesStep` and `ClearAndScanStep`
- Modify the scheduling mechanism in `WatchChangesStep`
- Adjust step registration and parameter configuration in config files
- Update related tests to align with the new interface changes
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* feat(daily): replace daily CRUD operations with slug provisioning approach
* refactor(tests): migrate CRUD step tests from HTTP server to direct LocalFileStore
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---------
Co-authored-by: huangsen <huangsen.huang@alibaba-inc.com>
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* feat(config): add daily_dir configuration and background job logging
- Added daily_dir setting with default value 'memory' to config
- Implemented logging for background job startup events
- Enhanced component start logic to handle background backend type
- Updated default YAML configuration structure
* refactor(file_parser): replace _get_relative_path with to_vault_relative method
- Remove redundant working_dir property from base file parser
- Add to_vault_relative method to base component for path resolution
- Update bare_file_parser to use new to_vault_relative method
- Update default_file_parser to use new to_vault_relative method
- Update linked_file_parser to use new to_vault_relative method
- Make working_path absolute in base_component and steps
- Simplify index_changes step by removing redundant base variable
- Consolidate path relative logic in single shared method
* docs(reme4): update report with detailed architecture sections
- Add comprehensive Markdown kernel section covering Obsidian compatibility
- Include detailed explanation of YAML front matter and wikilink formats
- Document smart slicing mechanism using Markdown AST instead of fixed tokens
- Explain graph indexing with bidirectional links and multiple backends
- Restructure sections with proper numbering from 4 to 7
- Move Markdown kernel section to appear before self-evolution features
- Add detailed explanations of auto-memory, auto-dream, and auto-link processes
- Document three-way hybrid search with RRF fusion and progressive expansion
- Include engineering value explanations for keyword indexing in Chinese context
