Development Design Changelog

2026-09-10 — Fresh-start baseline

• Reframed repository as a learn-by-building project plus product source tree.
• Simplified Task state to Backlog/Ready/Working/Needs You/Review/Done.
• Moved planning/review/verification into independent lifecycles.
• Added immutable Plan Revision model.
• Kept Go core + Electron/React desktop split.
• Added explicit Execution Environment boundary separate from Agent Adapter.
• Added durable Operation coordinator for external side effects and recovery.
• Added Agent Driver → Instance → Strategy → Capability model.
• Added Agent Turn beneath Agent Run.
• Kept raw-before-parse and raw logs outside SQLite.
• Kept Fact/Claim distinction.
• Made worktree paths stable-ID based and cleanup recoverability-based.
• Added live-stream versus historical-state split and connection/sync health separation.
• Changed documentation policy so canonical docs are updated when decisions change; archive is history only.