ci: simplify node setup now that macos-13 is native x86_64

No need for architecture override or conditional steps — macos-13
defaults to x64 node.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: branchseer

.github/workflows/ci.yml

@@ -91,15 +91,7 @@ jobs:
         continue-on-error: true
         run: cargo clippy --all-targets --all-features -- -D warnings
 
-      # Set up node and pnpm for running tests
-      # For x86_64-apple-darwin, use x64 node for fspy tests that verify Node.js fs accesses
       - uses: oxc-project/setup-node@fdbf0dfd334c4e6d56ceeb77d91c76339c2a0885 # v1.0.4
-        with:
-          architecture: x64
-        if: ${{ matrix.target == 'x86_64-apple-darwin' }}
-
-      - uses: oxc-project/setup-node@fdbf0dfd334c4e6d56ceeb77d91c76339c2a0885 # v1.0.4
-        if: ${{ matrix.target != 'x86_64-apple-darwin' }}
 
       # `pnpm install` prepares test bins used in snapshot tests
       # Must run after setup-node so correct native binaries are installed