[WIP] Register safe output MCP server as Node.js runtime

[Copilot]

Fix safe-outputs MCP server runtime mode and bundling

Problem

The safe-outputs MCP server JavaScript is executed as a standalone Node.js process but:

• Registered as RuntimeModeGitHubScript instead of RuntimeModeNodeJS
• Has incorrect /// <reference types="@actions/github-script" /> TypeScript reference
• Being bundled with GitHub Script mode validations instead of Node.js mode

Plan

• Analyze current state and identify issues
• Remove incorrect TypeScript reference from safe_outputs_mcp_server.cjs
• Change registration from RuntimeModeGitHubScript to RuntimeModeNodeJS
• Add API to request bundled vs unbundled version of scripts
• Update GetSafeOutputsMCPServerScript to use RuntimeModeNodeJS
• Verify no mixing of JavaScript from different runtimes
• Run tests to ensure changes work correctly
• Run make agent-finish for final validation

Original prompt

The safe output MCP server JavaScript is a bundled JavaScript using node JS runtime.

• make sure to register safe output MCP server as nodejs runtime
• make sure JavaScript from different runtimes are not mixed
• have an api to request a bundle version of a program (vs all files) and use it for the safe output server/

DO NOT CHANGE file locations!

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