Reorganize CHANGELOG: consolidate CLI redesign and improve readability

[jancurn]

Summary

Reorganized the CHANGELOG.md to improve clarity and logical flow by consolidating related changes and moving the major breaking change (CLI syntax redesign) to the top of the "Changed" section where it's most prominent.

Changes Made

• Reorganized sections: Moved the "Breaking: CLI syntax redesigned" entry from the bottom of "Changed" to the top, making the major breaking change immediately visible
• Consolidated related items: Grouped related functionality changes together (e.g., task execution features, session state improvements, tools cache behavior)
• Improved readability: Reordered "Added" and "Fixed" sections to prioritize user-facing features and critical bug fixes
• Removed redundancy: Eliminated duplicate entries and clarified overlapping descriptions
• Better logical flow: Organized changes to follow a narrative: breaking changes first, then feature additions, then bug fixes

Notable Details

• The CLI redesign table remains in the "Changed" section for easy reference
• Task execution features are now grouped together in the "Added" section
• Session state and authentication improvements are consolidated in the "Changed" section
• Bug fixes are now listed in order of impact and user visibility
• No source code changes; this is purely documentation reorganization for better maintainability and user comprehension

https://claude.ai/code/session_01STkPizj5hkX1e12YWw6dkG