Document media.write for chat media download

[vaulpannx]

Summary

• Tells the X MCP guide that chat_media_download needs media.write and returns X Chat ciphertext, not a viewable file.
• A media.write 403, or that tool missing while other X tools work, is a reconnect, not a new Project or App.
• The scope is already requested in mcp.json. Installs that signed in before it was added still need to sign in again.

Test plan

• The guide names media.write next to chat_media_download.
• mcp.json still requests media.write.
• Plugin description is unchanged, so the marketplace listing still matches plugin.json.

Made with Cursor

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Note

Low Risk
Documentation and version bump only; no runtime, auth, or MCP configuration changes in the diff.

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