[Feature]: Add an environment variable to enable only selected tools, not whole workflows

[weakvar]

Feature Description

To save context, I’d like to be able to list exactly which tools I need. There’s XCODEBUILDMCP_ENABLED_WORKFLOWS, of course, but it only lets you enable whole workflows, which often include a lot of extra stuff and take up a lot of context. It’d be great if I could specify just the tools I need.

Use Cases

Run MCP with only specific tools

Example Interactions

"XCODEBUILDMCP_ENABLED_TOOLS": "build_sim,clean,discover_projs, ..."

[ariccio]

I'd kinda prefer that in a mode like this if it's built, that the tools still get included by name, but put something really brief in the context like "user disabled build_device - tell them if you want it"

[github-actions]

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[github-actions]

Closing due to inactivity. If this is still relevant, please reopen or file a new issue with updated context.