docs: Consolidate v3.0+ architecture and simplify CLAUDE.md

[amiable-dev]

Description

This PR consolidates the CLAUDE.md documentation to reflect the mature v3.0+ architecture while removing redundant and outdated information. The file is reduced from 259 to 117 lines by:

1. Consolidating version information: Merged v2.1-v2.7 phase descriptions into a single "Completed Phases" section
2. Simplifying architecture diagrams: Removed duplicate diagrams and consolidated into a single, cleaner overview
3. Removing redundant gamepad documentation: Moved detailed gamepad architecture (ID ranges, button mapping, gilrs integration) to a concise reference section
4. Streamlining component descriptions: Replaced verbose descriptions with line counts and key features
5. Consolidating diagnostic tools: Grouped 9 tools into organized categories with brief descriptions
6. Simplifying configuration examples: Removed verbose TOML examples in favor of concise inline examples
7. Reorganizing troubleshooting: Condensed gamepad-specific troubleshooting into v3.0+ section
8. Adding version history table: Quick reference for feature timeline (v0.1.0 → v3.0.0)

Motivation

The CLAUDE.md file had grown to 259 lines with significant redundancy:

• Gamepad architecture was documented in 3 separate sections
• Phase descriptions were verbose and repetitive
• Multiple architecture diagrams showed the same information
• Outdated "Future Workspace Structure" section (already achieved in v3.0)
• Excessive detail on features already mature and stable

This consolidation makes the file more maintainable and easier for Claude to navigate while preserving all essential information. The reduction from 259 to 117 lines (55% reduction) improves signal-to-noise ratio without losing critical guidance.

Type of Change

• Documentation update
• Code refactoring (no functional changes)

Changes Made

• Consolidated project status to show v4.0.0 workspace version vs v3.0.0 latest release
• Merged v2.1-v2.7 phases into single "Completed Phases" section
• Simplified architecture overview diagram (removed duplicate IPC/Engine Manager details)
• Moved detailed gamepad architecture to concise reference section with ID ranges and button mapping
• Reorganized workspace structure with line counts and key features
• Grouped 9 diagnostic tools into MIDI, LED, Controller, Daemon, and Plugin categories
• Consolidated gamepad troubleshooting into v3.0+ section
• Added version history table for quick feature timeline reference
• Removed "Future Workspace Structure" section (already achieved)
• Removed verbose gamepad integration details (moved to reference section)
• Simplified configuration examples to inline TOML snippets
• Reduced performance characteristics section to essential metrics

Testing Performed

• Verified all links and references are still valid
• Confirmed all tool names and commands are accurate
• Checked that no critical information was lost
• Validated TOML examples are syntactically correct
• Reviewed for consistency with actual codebase structure

Checklist

• Documentation updated
• No functional code changes
• Verified accuracy of consolidated information
• Maintained all essential guidance for Claude
• Improved readability and maintainability

Additional Notes

This is a pure documentation consolidation with no impact on functionality. The file remains a comprehensive guide for Claude while being significantly more concise and easier to navigate. All technical details are preserved; only redundancy and verbosity have been removed.