Consolidate implementation plan into modular documentation

[lollipop-onl]

Summary

Refactored the monolithic PLAN.md file into a modular documentation structure. The main planning document now serves as a high-level overview with references to detailed specifications in the plans/ directory, making the documentation more maintainable and easier to navigate.

Key Changes

• PLAN.md: Reduced from 1414 to 45 lines

  • Removed detailed command specifications (moved to plans/command-specifications.md)
  • Removed design principles and development rules (moved to claude.md)
  • Kept only: project overview, completion status summary, and backlog of unimplemented features
  • Added references to related documentation files

• claude.md: Enhanced with design principles section

  • Added "設計原則" (Design Principles) section covering:
    • Name resolution strategy
    • Output format options
    • Interactive mode behavior
    • Project context handling
    • Error handling approach

• plans/command-overview.md: Marked unimplemented commands

  • Added comments indicating which commands are out of scope:
    • issue delete, issue comments, issue count, issue attachments, issue participants
    • pr count, pr attachments

Implementation Details

• All 99 commands across Phase 1-4 are now marked as complete
• Unimplemented features are clearly documented in a dedicated backlog section
• Documentation is now organized by concern: overview (PLAN.md), specifications (plans/), and development guidelines (claude.md)
• Cross-references between documents enable easy navigation

Benefits

• Easier to maintain and update individual sections
• Clearer separation between completed work and future scope
• Development guidelines are now co-located with implementation code
• Reduced cognitive load when reviewing the main plan document

https://claude.ai/code/session_01Y2Bz3RWkCoYUdKjYKjgoBG