refactor: remove Paint tool from toolkit

- Removed Paint card from ToolsGrid
- Updated Stats from 7 to 6 tools
- Updated Footer badge from 7 to 6 tools
- Removed Paint link from Footer tools column
- Removed Paint from README Available Tools section

Current tools (6):
- Vert (file converter)
- Pastel (color toolkit)
- Stirling (PDF toolkit)
- Units (unit converter)
- Draw (whiteboard)
- Figlet (ASCII art)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

@@ -132,7 +132,6 @@ Tailwind CSS 4 uses a new CSS-first configuration approach:
 ## Available Tools
 
 - **Vert** - Privacy-focused file converter (images, audio, documents)
-- **Paint** - Browser-based image editor
 - **Pastel** - Modern color manipulation toolkit with palette generation and accessibility testing
 - **Stirling** - Powerful PDF toolkit with 50+ operations (merge, split, convert, OCR, sign)
 - **Units** - Smart unit converter with 187 units across 23 categories (length, mass, temperature, etc.)