docs: add ReMe2 architecture design documentation
- Add comprehensive design document (reme2.md) detailing the
three-layer architecture (L1/L2/L3) for the vault system
- Document new protocols for folder notes and memory management
- Specify interface contracts for memory_* and vault_* tools
- Outline implementation phases from current state to target
refactor: fix typo in personal retriever class
- Correct spelling error: 'retri eved_nodes' -> 'retrieved_nodes'
in PersonalRetriever.result assignment
chore: update gitignore with vault-related patterns
- Add '/vault' to ignore vault directory
- Add '/reme-plugin' to ignore plugin files
- Add '/reme2/vault' to ignore new vault implementation
```
- Add file_parser component with default implementation
- Introduce SearchFilter schema for path and tag filtering
- Implement filter functionality in BaseFileStore and LocalFileStore
- Update file watcher to use parser-based filtering instead of suffix filters
- Register new FILE_PARSER component enum
- Add test_data directory to gitignore
refactor: improve component imports and initialization
- Fix relative imports in application.py
- Add file_parser import to component init
- Initialize registry dict when component type doesn't exist
- Remove circular import in HttpService by using string annotation
- Update config yaml to use proper component names
refactor: enhance file watcher architecture
- Replace MdFileWatcher with more flexible FullFileWatcher and LightFileWatcher
- Remove suffix-based filtering in favor of parser-based approach
- Update BaseFileWatcher to resolve parsers from app context
- Remove unused watch_filter method
refactor: update ReMe core functionality
- Remove memory_path creation
- Simplify dream and proactive methods to return empty strings
- Update config defaults for HTTP service and component backends
docs: update component configuration in paw.yaml
- Change service backend from cmd to http
- Rename components to use correct singular forms
- Add default file parser and file watcher configurations
- Set up local file store with default settings
```
Co-authored-by: huangsen <huangsen.huang@alibaba-inc.com>
