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
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- Introduce BaseFileParser abstract class with component registration
- Add MdFileParser implementation for markdown files with YAML frontmatter
- Create TextFileParser implementation with built-in chunking support
- Implement file suffix enumeration for parser type safety
- Add chunking logic with configurable token size and overlap
- Support text file parsing with error handling for encoding issues
- Include line number tracking and content hashing for file chunks
- Introduce Application class for managing application lifecycle
- Add base component classes for LLM formatters and token counters
- Implement embedding model base with caching and batching support
- Create file watcher base with watchfiles integration
- Add job and step base components for workflow execution
- Update base component with async locks and improved lifecycle management
- Register new component types in component registry
- Add application context and runtime context for dependency injection
- Integrate AnthropicChatModel with new AnthropicAsLLM component
- Add component formatters for OpenAI and Anthropic chat models
- Implement token counter component with estimated token counting
- Create base client component for ReMe service communication
- Refactor BaseComponent to remove app_context parameter from _start/_close
- Update embedding model base class to remove retry logic and use npz cache
- Add job component for sequential step execution with BaseJob
- Implement step component base class for LLM workflow execution
- Enhance application context with proper type annotations
- Update component initialization to pass app_context automatically
- Remove asyncio dependency from embedding model cache operations
- Introduce BaseAsTokenCounter and EstimatedAsTokenCounter for token estimation
- Add AsMsgStat and AsBlockStat schema for message statistics tracking
- Implement FileIO class with read/write/append/edit operations
- Create file utility functions for safe async file reading and truncation
- Add MemorySearch component for semantic search in memory files
- Register new component types in ComponentEnum and update imports
- Add constants for default host, port, and truncation limits
- Create BaseService abstract base class for service implementations
- Implement BaseStep with component accessors and lifecycle management
- Add proper __all__ exports for all new modules and components
