yams/CHANGELOG.md
2025-08-13 23:11:02 -04:00

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# Changelog
All notable changes to YAMS (Yet Another Memory System) will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [v0.1.5] - 2025-08-13
### Added
- **LLM Ergonomics Enhancements**
- Added `--paths-only` flag to search command for LLM-friendly output (one file path per line)
- Enhanced codebase indexing workflows for AI agent integration
- Improved documentation in PROMPT-eng.md with LLM-optimized YAMS patterns
- Support for using YAMS as "memory layer for low context" in AI workflows
- Magic number patterns for `#include`, `import`, `function`, `class`, shebang lines, etc.
- Automatic programming language detection during recursive directory operations
- **Grep Command**: Full-featured regex search within indexed file contents
- Standard grep options: `-A/--after`, `-B/--before`, `-C/--context` for context lines
- Pattern matching options: `-i` (case-insensitive), `-w` (whole word), `-v` (invert)
- Output options: `-n` (line numbers), `-H` (with filename), `-c` (count), `-l` (files with matches)
- Color highlighting support with `--color` option
- Supports searching all indexed files or specific paths
- **Knowledge Graph Integration in Get Command**
- Added `--graph` flag to display related documents
- Added `--depth` option (1-5) to control graph traversal depth
- Shows documents in same directory and with similar extensions
- Displays document relationships and metadata
- **Line-Level Search with Context**
- Enhanced search command with `-n/--line-numbers` flag
- Added context options: `-A/--after`, `-B/--before`, `-C/--context`
- Highlights matching lines with color
- Shows surrounding context lines for better understanding
- **C++17 Compatibility Mode** for broader system support
- New `YAMS_CXX17_MODE` CMake option for legacy compiler compatibility
- Support for GCC 9+, Clang 9+, older MSVC versions
- Automatic fallbacks: `boost::span` for `std::span`, `fmt` for `std::format`
- Compatible with Ubuntu 20.04 LTS, CentOS 8, older macOS versions
- Comprehensive compatibility documentation and build matrix
- Runtime feature detection with graceful degradation
- **Enhanced Build System Flexibility**
- Dual-mode compilation: full C++20 for modern systems, C++17 for legacy
- Automatic dependency management with Conan and FetchContent fallbacks
- Compiler-specific optimizations and warning configurations
- Performance-oriented feature selection based on available capabilities
- **MCP Server Feature Parity Enhancements** (~85% CLI-MCP parity achieved)
- **Enhanced search_documents tool** with LLM ergonomics optimizations
- Added `paths_only` parameter for LLM-friendly file path output (one per line)
- Added line context parameters: `line_numbers`, `after_context`, `before_context`, `context`
- Added `color` parameter for syntax highlighting control (always, never, auto)
- **New grep_documents tool** with full CLI grep parity
- Complete regex pattern matching across indexed document contents
- Context options: `-A/--after`, `-B/--before`, `-C/--context` for surrounding lines
- Pattern options: `ignore_case`, `word`, `invert` for flexible matching
- Output modes: `line_numbers`, `with_filename`, `count`, `files_with_matches`, `files_without_match`
- Color highlighting and `max_count` limit support
- **Knowledge graph integration** in retrieve_document tool
- Added `graph` parameter to include related documents in response
- Added `depth` parameter (1-5) for graph traversal control
- Added `include_content` parameter for full document content in graph responses
- Finds documents in same directory, similar extensions, and metadata relationships
- **New update_metadata tool** for document metadata management
- Update metadata by document `hash` or `name` with automatic resolution
- Support for multiple `key=value` metadata pairs in single operation
- Verbose output option for detailed update information
- **Enhanced list_documents tool** with comprehensive filtering and sorting
- File type filtering: `type`, `mime`, `extension`, `binary`, `text` parameters
- Time-based filtering: `created_after/before`, `modified_after/before`, `indexed_after/before`
- Recent documents filter: `recent` parameter for N most recent files
- Sorting control: `sort_by` (name, size, created, modified, indexed) and `sort_order` (asc, desc)
- **Enhanced get_stats tool** with file type breakdown analysis
- Added `file_types` parameter for detailed file type distribution
- Shows file type counts, sizes, top extensions per type, and top MIME types
- Provides comprehensive storage analytics for better content understanding
### Enhanced
- **MCP Tool Documentation** comprehensively updated with new schemas and examples
- Added complete JSON schemas for all enhanced tools with parameter descriptions
- Added practical usage examples for each tool capability
- Updated integration documentation for Claude Desktop configuration
- **YAMS-first workflow guidance**: default to indexing and searching code via YAMS pre-watch; avoid external grep/find/rg for repository queries.
- **CLI docs enhanced** with pre-watch indexing workflow and YAMS-only search/grep examples.
### Technical Details
- **File type classification system** with MIME type analysis using `getFileTypeFromMime()` and `isBinaryMimeType()` helper methods
- **Knowledge graph traversal** leverages document relationships through metadata repository queries
- **LLM ergonomics optimizations** reduce context usage while maintaining full functionality
- **Tool schema definitions** follow JSON-RPC standards for seamless MCP integration
### Fixed
- **Indexing Tests**: Updated for new API with proper factory function declarations
- **Namespace Issues**: Fixed forward declarations in document_indexer.h
- **CLI11 Conflicts**: Resolved `-h` flag conflict in grep command by using only `--no-filename`
- **Test Suite Stabilization**
- Fixed SEGV crash in vector_database_tests (DocumentChunkerTest bounds checking)
- Fixed AddressSanitizer container overflow in detection_tests
- Added thread safety to FixtureManager test infrastructure with proper mutex protection
- Added thread safety to FileTypeDetector for libmagic operations (not thread-safe by default)
- Fixed compilation errors in multiple test files (header includes, error codes, GMock dependencies)
- Fixed EXPECT_NO_THROW macro usage in detection tests
- **Recursive Add Pattern Parsing**
- Fixed CLI11 comma-separated pattern handling in `--include` and `--exclude` options
- Now properly splits patterns like `"*.cpp,*.h,*.md"` into individual patterns
- Added proper whitespace trimming and empty pattern filtering
- **CI/CD Pipeline Improvements**
- Fixed Conan options quoting for proper test builds (`"yams/*:build_tests=True"`)
- Added explicit `YAMS_BUILD_TESTS=ON` to CMake configuration
- Added individual test target builds before running ctest
- Implemented graceful test failure handling (CI continues, reports detailed results)
- Added ASAN relaxation options for CI environment compatibility
- Fixed YAML syntax error in release.yml (Python script indentation)
## [v0.1.3] - 2025-08-13
### Added
- **Multi-Channel Package Distribution System**
- Universal install script with platform detection (Linux/macOS, x86_64/ARM64)
- One-line installation: `curl -fsSL https://raw.githubusercontent.com/trvon/yams/main/install.sh | bash`
- Checksum verification and retry logic for secure downloads
- Custom installation directory support and shell completion setup
- Environment variable customization (YAMS_VERSION, YAMS_INSTALL_DIR, etc.)
- **Docker Container Support**
- Multi-stage Dockerfile with optimized Ubuntu-based runtime
- Multi-architecture builds (AMD64/ARM64) via GitHub Container Registry
- Automated publishing on tags and main branch pushes to `ghcr.io/trvon/yams`
- Non-root user configuration for security best practices
### Enhanced
- **GitHub Release Workflow with Performance Reporting**
- Comprehensive benchmark execution with JSON result collection
- Code coverage reports (HTML/XML) generated for Linux builds
- Performance metrics tables in release notes with timing and throughput data
- Coverage and benchmark files automatically uploaded as release assets
- Combined release notes with changelog and performance data
- **CI/CD Pipeline Improvements**
- Migrated all workflows to self-hosted runners (`self-hosted`, `Linux/macOS`, `X64/ARM64`)
- Fixed compatibility issues (mapfile command, artifact upload paths)
- Enhanced artifact collection (coverage reports, benchmark results, binaries)
- Streamlined build process removing problematic Conan profile modifications
### Notes
- All packaging improvements implemented but not yet released pending verification
- Release workflow enhanced to provide comprehensive performance and coverage data
- Multi-platform distribution ready for production deployment
## [0.1.2] - 2025-08-13
### Added
- **File Type and Time Filtering**: Enhanced list, get, and stats commands with comprehensive filtering
- File type filters: `--type`, `--mime`, `--extension`, `--binary`, `--text`
- Time filters: `--created-after/before`, `--modified-after/before`, `--indexed-after/before`
- Supports flexible time formats (ISO 8601, relative like "7d", natural like "yesterday")
- **Stats Command File Type Breakdown**: New `--file-types` flag shows detailed file type analysis
- File type distribution with counts and sizes
- Top file extensions per type
- Top MIME types in the system
- **Intelligent File Type Detection**: Uses magic_numbers.json as single source of truth
- Runtime detection of data files across multiple installation paths
- Graceful fallback to built-in patterns when JSON not found
### Changed
- **File Type Classification**: More accurate detection using magic numbers vs just extensions
- **Data File Installation**: magic_numbers.json now properly installed to system paths
## [0.1.1] - 2025-08-13
### Fixed
- Corrected Conan preset names (use `conan-release` instead of `build-conan-release`)
- Fixed C++20 standard requirement in Conan profiles
- Removed overly strict compiler warnings that broke dependency builds
- Fixed gcovr regex patterns for coverage reports
- Removed `-Wold-style-cast`, `-Wconversion`, `-Wsign-conversion`, and `-Woverloaded-virtual`
- Keeps essential warnings while allowing third-party code to compile cleanly
### Changed
- **Build Instructions**: Standardized on `conan-release` preset across all platforms
- Simplified build commands in README and documentation
- Consistent build directory structure (`build/conan-release`)
## [0.1.0] - 2025-08-12
### Added
- **List Command Enhancement**: Added `--recent N` flag to show N most recent documents
- Filters to the N most recent documents before applying other sorting
- Works with all existing sort options (name, size, date, hash)
- Useful for quickly viewing recently added content
- **PDF Text Extraction**: Full PDF text extraction support using PDFium library
- Extract text from all PDF pages with proper UTF-16 to UTF-8 conversion
- Extract PDF metadata (title, author, subject, keywords, creation date)
- Support for searching within PDFs with context lines
- Page-by-page extraction with configurable options
- Automatic section detection for academic papers
- **Metadata Update Command**: New `update` command for modifying document metadata
- Update metadata by document hash or name
- Support for multiple key-value pairs in single command
- Enables task tracking and status management workflows
- Works with both file and stdin documents
- **Task Tracking System**: Comprehensive benchmark and test enhancement tracking
- PBI documentation structure for systematic improvement
- Task status tracking via metadata updates
- Progress monitoring capabilities
- **KG Hybrid Scoring (default)**: Hybrid search integrates Keyword + Vector + Knowledge Graph
- Enabled by default in both CLI and MCP via a shared SearchEngineBuilder
- Fails open to metadata/keyword-only when KG is unavailable
### Fixed
- **Reference Counter Transaction IDs**: Fixed UNIQUE constraint violation in ref_transactions
- Removed manual transaction ID management
- Now uses SQLite AUTOINCREMENT for guaranteed unique IDs
- Prevents "UNIQUE constraint failed" errors when multiple ReferenceCounter instances exist
- **Duplicate Document Handling**: Fixed metadata constraint errors when re-adding existing documents
- Detects high deduplication ratio (≥99%) and updates existing metadata instead of inserting
- Properly handles both new and existing documents
- Updates indexed timestamp for existing documents
- **Name Resolution for Commands**: Fixed document lookup by name for stdin documents
- get, cat, and update commands now properly find stdin documents by name
- Uses search functionality as fallback when path-based search fails
- Supports both file-based and stdin documents uniformly
- Automatic platform detection (mac-arm64, mac-x64, linux-x64, linux-arm64, win-x64)
- FetchContent integration for non-Conan builds
- Conditional compilation with YAMS_HAS_PDF_SUPPORT flag
- Installs libpdfium.dylib into the install lib directory and sets its install_name to @rpath/libpdfium.dylib
- Patches installed executables to reference @rpath/libpdfium.dylib and adds rpath @loader_path/../lib
- Eliminates dyld errors like "Library not loaded: ./libpdfium.dylib"
- Created header file for UpdateCommand class
- Fixed compilation errors in update_command.cpp
- Resolved conflicts between Conan and FetchContent for Google Benchmark
- Fixed imgui.h include path for browse_command.cpp
- Fixed compilation issues with performance benchmarks
### Changed
- **Extraction Module**: Enhanced to support multiple file formats
- Modular extractor registration system
- Extensible architecture for future format support
- **Logging Verbosity**: Storage operations now use debug level instead of info
- "Stored file" messages only appear in verbose/debug mode
- Cleaner output for normal operations
### Known Issues
- **Performance Benchmarks**: Storage benchmarks cause segmentation fault after Rabin chunking tests
- SHA256 benchmarks work correctly (2.59 GB/s for large files)
- Rabin chunking benchmarks work correctly (178 MB/s)
- Storage fixture initialization causes crash - to be fixed in future update
## [0.0.6] - 2025-08-11
### Added
- TUI Browser Improvements
### Fixed
- Fixed unique_ptr copy errors in query parser benchmarks
- Resolved compression error handler warnings on Ubuntu 22.04
- Improved error handling and warning cleanup for better compiler compatibility
- Removed hardcoded widget dimensions that broke small terminal displays
- Fixed non-functional scrolling in document lists
- Improved loading state management and race condition handling
- Enhanced document preview formatting and metadata display
## [0.0.5] - 2025-08-11
### Added
- **Build System Enhancements**:
- Automatic std::format detection with fallback to fmt library for older compilers
- Improved ncurses detection for Linux builds with clear error messages
- BUILD-GCC.md documentation for building with GNU toolchain
- **Search Improvements**:
- Word-by-word processing for multi-word queries (e.g., "chain event ingestion" searches each word independently)
- Minimum-should-match scoring (50% of query words must match by default)
- Intelligent result aggregation with boost for documents matching all query words
- Edit distance-based scoring (closer matches score higher)
- Automatic fallback to fuzzy search when FTS5 fails
- **Hash search capability**: Search documents by SHA256 hash (full or partial, minimum 8 characters)
- **Verbosity control**: Concise output by default, detailed output with --verbose flag
- Auto-detection of hash format in queries (8-64 hexadecimal characters automatically trigger hash search)
- **MCP Server Enhancements**:
- Updated to use metadata repository path with all v0.0.5 search improvements
- Added fuzzy search support to MCP server tools with configurable similarity threshold
- Enhanced search_documents tool with fuzzy and similarity parameters
### Fixed
- Proper handling of hyphens in queries like "PBI-6", "task-4", "feature-123"
- Special characters (@, #, ?, :, /, \, [], {}, ()) no longer cause SQL errors
- Advanced FTS5 operators (AND, OR, NOT, NEAR) still available for power users
- **Fuzzy search matching**: Completely rewrote trigram similarity calculation
- **CI/CD Pipeline**:
- Added install step verification to ensure artifacts are created
- Added libncurses-dev to Ubuntu dependencies
- Enabled Ubuntu traditional (non-Conan) builds in CI matrix
### Changed
- **Search indexing strategy**: Enhanced to support both single and multi-word queries effectively
- Documents now indexed at word level in addition to full content
- Keywords extracted more comprehensively with 2-word phrases
- Improved tokenization with punctuation handling
- **Error handling**: FTS5 failures now gracefully fall back to fuzzy search instead of returning errors
## [0.0.4] - 2025-08-11
### Added
- **Directory-based workflows** with collections and snapshots for multi-folder ingestion
- `add --collection <name>`: Add documents to a named collection for organization
- `add --snapshot-id <id> --snapshot-label <label>`: Add documents to a snapshot for point-in-time grouping
- `add --recursive`: Recursively add files from directories
- `restore --collection <name>`: Restore all documents from a specific collection
- `restore --snapshot-id <id>`: Restore all documents from a specific snapshot
- `restore --layout <template>`: Flexible output patterns like `{collection}/{path}` for restore operations
- **MCP Server Tools** for directory operations with full CLI parity
- `add_directory`: Add directory contents with collection/snapshot support
- `restore_collection`: Restore documents from a collection to filesystem
- `restore_snapshot`: Restore documents from a snapshot to filesystem
- `list_collections`: List available collections
- `list_snapshots`: List available snapshots
- **CLI verbosity control**: All CLI commands now have concise output by default
- Use `--verbose` flag for detailed JSON metadata output
- Reduces context window usage while maintaining functionality
- **MCP Server enabled by default** in all builds for integrated AI tool support
### Changed
- **Database schema enhanced** with collections and snapshots metadata (migration v6)
- New indexes for efficient collection and snapshot queries
- Metadata tables support `collection`, `snapshot_id`, and `snapshot_label` fields
- **CLI output standardized** to be concise by default, verbose on request
- **Build system updated** to enable MCP server by default in Conan builds
### Fixed
- **Version consistency**: MCP server now uses same version system as CLI (was hardcoded "1.0.0")
- **ImTUI integration**: Resolved ncurses symbol versioning conflicts using ExternalProject_Add
- **FTS5 support**: Enabled SQLite full-text search in Conan configuration
- **Conan 2.0 compatibility**: Fixed all C++20 build issues with external dependencies
- **Test suite improvements**: Comprehensive fixes for CI/CD reliability
- Fixed GMock header compilation errors in MCP tests (missing `GTest::gmock` dependency)
- Fixed SlidingWindowChunker infinite loop caused by unsigned integer underflow
- Updated chunker test expectations to use realistic tolerances for word boundary preservation
- Fixed metadata repository tests API compatibility (ConnectionPool vs Database constructor)
- Resolved performance-dependent test failures in Rabin chunker (reduced expectations from 200MB/s to 100MB/s)
### Developer Notes
- Database migration system handles schema updates automatically
- All directory operations are scoped to prevent accidental mass operations
- MCP server integration provides seamless AI tool access to YAMS functionality
- Build system now supports both CLI and MCP server components by default
## [0.0.3] - 2025-08-11
### Added
- **MCP Tools**: New Model Context Protocol tools supporting v0.0.2 CLI enhancements
- `delete_by_name`: Delete documents by name, multiple names, or glob patterns with dry-run support
- `get_by_name`: Retrieve document content by name instead of hash
- `cat_document`: Display document content directly (similar to CLI cat command)
- `list_documents`: List stored documents with filtering by pattern and tags
- **TUI Browser migrated to ImTUI**: Complete rewrite from FTXUI to ImTUI for better compatibility
- Full-screen document viewer with hex mode toggle (Enter to open, x to toggle)
- External pager integration (o key) with proper terminal suspend/resume
- Preview pane scrolling when focused (Tab to switch columns, j/k to scroll)
- Extended command mode (:hex, :open, :refresh, :help, :q)
### Changed
- Browse command refactored to use modular TUI components and improved UX
### Fixed
- Safer preview of binary content and better CRLF handling
- **Build System**: Resolved multiple compilation issues preventing CI/CD success
- Fixed switch statement scope error in `posix_storage.cpp` by adding proper braces
- Added missing `#include <sys/resource.h>` for POSIX resource limits
- Added missing `#include <cmath>` in embedding tests for `std::isfinite` and `std::sqrt`
- Added missing `#include <algorithm>` for `std::all_of` in manifest manager
- Fixed designated initializer field ordering in `compressed_storage_engine.cpp`
- Fixed type conversion from `std::string_view` to `Hash` type
- Replaced `std::ranges::all_of` with `std::all_of` for broader compiler compatibility
### Developer Notes
- All compilation fixes tested locally with successful build completion
- Prepared for GitHub Actions CI/CD pipeline success
- Build now completes without errors on macOS (AppleClang 17.0.0)
## [0.0.2] - 2025-08-11
### Added
- **Name-based operations**: All major commands now support name-based access
- `delete --name <name>`: Delete document by name
- `delete --names <name1,name2>`: Delete multiple documents by names
- `delete --pattern <pattern>`: Delete documents matching glob pattern (e.g., `*.log`)
- `get --name <name>`: Retrieve document by name
- `cat` command: New command for displaying content directly to stdout
- `cat <hash>` or `cat --name <name>`: Output content for piping and viewing
- **Command aliases**: Unix-style command aliases for better ergonomics
- `rm` as alias for `delete`
- `ls` as alias for `list`
- **Delete command enhancements**:
- `--dry-run` flag: Preview what would be deleted without actually deleting
- `--verbose` flag: Show detailed deletion information
- Bulk deletion support with pattern matching
- Improved error handling for ambiguous names
- **Browse command improvements**:
- Command mode with `:` or `p` key (vi-like commands)
- Preview pane now shows actual content from metadata repository
- Binary content detection for preview
- Better search functionality with fuzzy/exact toggle
- **Documentation**:
- Added MCP tools documentation (`docs/api/mcp_tools.md`)
- Updated CLI documentation with new features
- Added this CHANGELOG.md for tracking changes
### Fixed
- **CI/CD**: Fixed compilation errors by adding missing includes in `compressor_interface.h`
- Added `#include <functional>`
- Added `#include <unordered_map>`
- **Browse command**: Fixed preview loading for documents with metadata content
### Changed
- **Get command**: Now supports both hash and name-based retrieval
- **Delete command**: Refactored to use CLI11 option groups for better argument handling
- **Browse command**: Enhanced with command mode and better content preview
### Developer Notes
- Integration tests created for delete command functionality
- Improved CLI command structure using option groups
- Better separation of concerns between viewing (`cat`) and downloading (`get`) operations
## [0.0.1] - 2025-08-11
### Added
- Initial release of YAMS
- Core content-addressable storage functionality
- MCP (Model Context Protocol) server support
- Basic CLI commands: init, add, get, delete, list, search
- Metadata repository with SQLite backend
- Compression support with multiple algorithms
- Deduplication at chunk level
- TUI browser interface
- Authentication and key management
- Configuration management
- Stats and monitoring capabilities
---
*Note: This project follows semantic versioning. Given the 0.x.y version, the API is still considered unstable and may change between minor versions.*