Add OpenCode integration for MCP

[sfshaza2]

Fixes #12959. Adds documentation for configuring the Dart and Flutter MCP server with OpenCode.

[gemini-code-assist]

Summary of Changes

Hello @sfshaza2, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces new documentation to guide users on integrating OpenCode with the Dart and Flutter Model Context Protocol (MCP) server. By adding clear configuration steps and an example, it aims to simplify the process for developers looking to leverage the MCP server within their OpenCode environments, directly addressing issue #12959.

Highlights

• OpenCode Integration Documentation: A new section has been added to the mcp-server.md documentation, providing detailed instructions on how to configure OpenCode to utilize the Dart and Flutter MCP server. This includes a JSON configuration example.

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[gemini-code-assist]

Code Review

This pull request adds documentation for configuring the Dart and Flutter MCP server with OpenCode. The changes are clear and well-structured. I have one suggestion to improve consistency with the rest of the document.

[sfshaza2]

@antfitch @johnpryan, does this look ok?

[flutter-website-bot]

Visit the preview URL for this PR (updated for commit c1c93bf):

https://flutter-docs-prod--pr12997-opencode-integration-998ztdrj.web.app

[johnpryan]

LGTM, I hadn't heard of OpenCode before!

[Solido]

@johnpryan OpenCode is currently forcing Codex to finally push some UI features like Plan mode using tab and you can even connect Antigravity to help frame Gemini as Flutter is obviously not first citizen on it. Thanks for the addition!