- Update SearchVaultFiles function to return contextual snippets instead of just file lists
- Implement snippet extraction with configurable context length (300 chars)
- Add snippet merging logic to consolidate overlapping matches
- Limit results to 20 randomly sampled matches when exceeding threshold
- Update return types across service layer to use SearchMatch/SearchSnippet
- Change regex flags to 'ig' for global case-insensitive matching
Replace list_vault_files function with search_vault_files that performs regex-based content search instead of listing all files. Add escapeRegex helper for search term sanitization. Remove unused edit mode CSS.
