docs(mcp): add OpenCode interactive setup instructions

[Kitenite]

Summary

• The Open Code CLI tab in the MCP docs previously just said opencode mcp add with no context on what to do next
• Added step-by-step instructions for the interactive prompts (server name, type, URL, OAuth)

Changes

• apps/docs/content/docs/mcp.mdx: Expanded the Open Code CLI tab with the interactive prompt values users should enter

Test Plan

• Verify the docs page renders correctly with the updated Open Code tab

Summary by CodeRabbit

• Documentation
  • Replaced a static terminal example with a guided, interactive Open Code flow and an ANSI-formatted terminal transcript to walk users through adding an MCP server.
• Chores
  • Added a placeholder OAuth configuration entry for the Superset MCP integration to support future authentication setup.

[coderabbitai]

Caution

Review failed

The pull request is closed.

📝 Walkthrough

Walkthrough

Replaced a static terminal snippet in MCP docs with a guided, interactive Open Code flow for opencode mcp add, and added an empty oauth object under mcp.superset in opencode.json.

Changes

Cohort / File(s)	Summary
MCP Documentation apps/docs/content/docs/mcp.mdx	Replaced the static terminal example with a step-by-step interactive opencode mcp add flow including prompts and an ANSI-formatted simulated terminal transcript.
Opencode configuration opencode.json	Added an oauth: {} property under mcp.superset adjacent to the existing url entry (new empty object field).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• fix(mcp): use dynamic client registration for OAuth instead of hardcoded client ID #1313: Changes MCP OAuth configuration for the Superset MCP server (closely related to adding an oauth block).
• chore: bump better auth version #1312: Modifies the mcp.superset opencode.json entry (same config surface as this change).
• feat(auth): migrate from mcp() to oauthProvider() for OAuth 2.1 #1324: Adjusts MCP OAuth/config patterns (related to the added oauth field).

Poem

🐰 I hopped through prompts in the night,

Typed a name and set the site,
URL, OAuth, a tiny trace,
The MCP joined the rabbit race —
Hooray! the config’s in its place. 🎉

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely summarizes the main change: adding interactive setup instructions to the OpenCode MCP documentation.
Description check	✅ Passed	The description includes summary, changes, and test plan sections that cover the key aspects. However, it omits required sections like Related Issues, Type of Change, and additional template fields.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch kitenite/opencode-mcp-instruction

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