Add comprehensive changelog summary for 1.1 branch development since 1.1.0-beta.3

[Copilot]

This PR adds a detailed analysis and documentation of all code changes made in the 1.1 branch since the 1.1.0-beta.3 release (commit e63289c) through to the latest commit (0392afb).

Summary

The analysis covers approximately 50 commits spanning multiple areas of improvement:

Key Areas of Development

🤖 DTD (Deep Text Detection) Algorithm Optimizations

• Enhanced accuracy with sobelLineAngleDiffMask for precise text edge comparison
• Improved handling of segmented subtitle lines on textured backgrounds
• Added pre/post-processing steps and ECC implementation on Sobel operators
• Performance tuning and resolution limiting for better efficiency

🖥️ GUI Interface Enhancements

• Added progress bar for better user feedback
• Integrated OCR checkbox options
• Improved error handling with crash messages and success notifications
• Enhanced debugging capabilities with dialogRect display

📝 OCR Functionality Upgrades

• Major upgrade from PaddleOCR 2.x to 3.0 with PaddleX support
• Added angle filtering and non-major suppression features
• Performance optimizations through resolution limiting and MKLDNN acceleration

⚡ SpeculativeEngine Critical Fixes

• Resolved frame retrieval failures and proposal progression issues
• Improved processing accuracy and human-readable verbose output

🛠️ Infrastructure Improvements

• Migrated from work queues to thread pools for better performance
• Enhanced disk caching with LZ4 compression and asynchronous I/O
• Updated build system with Paddle 3.1 and dependency management

Documentation Value

This changelog provides developers and users with:

• Clear categorization of improvements by functional area
• Chronological commit history with detailed descriptions
• Context for architectural decisions and performance optimizations
• Roadmap insights for the 1.1 release cycle

The document serves as both a historical record and a reference for understanding the evolution of MagiaTimeline's core algorithms and user experience enhancements.

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