Version 0.4.0

Added

• Enterprise-grade structured logging with Python+Rust coordination
• Smart environment detection (production/development/testing/jupyter/CI)
• Automatic logging configuration with graceful fallbacks
• JSON and human-readable log formats with configurable targets (console/file)
• File logging with daily rotation and intelligent path handling
• Performance timing instrumentation on all hot paths (add, search, training)
• Comprehensive error context logging with field standardization
• Cross-platform logging support (Windows, macOS, Linux)
• Environment variable configuration for all logging aspects
• Production-ready observability for operations teams

Changed

• Replaced debug println! statements with structured tracing throughout codebase
• Enhanced error handling with rich logging context instead of panic conditions
• Improved vector addition pipeline with detailed operation tracking
• Updated quantization training process with progress logging and timing metrics
• Modernized persistence operations with comprehensive save/load logging

Fixed

• Eliminated potential panic conditions in distance space validation
• Improved error propagation with proper logging context
• Enhanced thread safety in concurrent logging scenarios
• Resolved cross-platform path handling inconsistencies