v3.24.0

What's New

• /color slash command - Pick Ralph's terminal background tint (dark teal, dark purple, dark red, custom hex, or off)
• Configurable terminal tint - terminalTint in .ralph/config.json lets the loop read your preferred color instead of hardcoding
• UAT story-state-protection test - New test coverage for story state protection
• Docs refresh - Updated cheatsheet, customization guide, architecture, workflow, skills, troubleshooting, and getting started docs
• Removed deprecated /idea skill - Use /prd instead
• Improved PRD validation - Updated prd-check skill and validation scripts
• Hooks installer improvements - Refreshed hook installation and setup scripts