Change from text/vnd.mcp.ui+html to text/html+mcp.
Rationale:
- It's an unregistered subtype, allowed for private use
- The +suffix form indicates MCP-specific semantics (postMessage protocol)
- Content is still valid HTML and can be rendered as-such
- Following RFC 6838, +mcp could be registered as an official suffix
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Co-Authored-By: Claude <noreply@anthropic.com>
Replace all occurrences of text/html with text/vnd.mcp.ui+html
in the specification and example code for consistency.
The spec already defined text/vnd.mcp.ui+html in the capability
negotiation section but used text/html in other places.
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Co-Authored-By: Claude <noreply@anthropic.com>
Replace custom build.ts dependency with standard Vite setup:
- package.json with Vite scripts (dev, build, preview)
- Use @modelcontextprotocol/ext-apps package imports
- Standard Vite project structure (index.html at root)
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Co-Authored-By: Claude <noreply@anthropic.com>