Ryan Malloy 406cc891c3 Add font resources and fix validation issues
- Add font:// MCP resources for available and web-safe fonts
- Create mcp_video_test_fonts tool for font testing
- Fix return value validation (convert numbers to strings)
- Add Union import for type hints
- Clients can now discover available fonts before using overlays
2025-09-05 05:37:12 -06:00
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