Merge pull request #1808 from modelcontextprotocol/localden/anniversa…

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(chore): Add post for MCP first anniversary and Nov 2025 release

Merge pull request #1707 from modelcontextprotocol/aaronpk/ext-auth

add description of authorization extensions to main authorization spec page

Merge pull request #783 from modelcontextprotocol/davidsp/2025-06-18

The Model Context Protocol - Revision 2025-06-18

Merge pull request #232 from modelcontextprotocol/justin/release

2025-03-26 release

Merge pull request #173 from PederHP/feat/completion_capability_as_op…

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Completions capability flag

Model Context Protocol Protocol version 2024-11-05