We already know which headers are necessary, so it's wasteful to put the full zig_sdk to every sandbox. This reduces the number of files in `external/zig_sdk` from 15k to 4k or 6k, depending on the action.
We already know which headers are necessary, so it's wasteful to put the full zig_sdk to every sandbox. This reduces the number of files in `external/zig_sdk` from 15k to 4k or 6k, depending on the action.