fix(ci): add Homebrew to PATH for self-hosted macOS runner

- Add /opt/homebrew/bin and /opt/homebrew/sbin to PATH
- Required for pkg-config and other Homebrew-installed tools
- Self-hosted runner has minimal default PATH

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: pythoninthegrass

.github/workflows/test.yml

@@ -186,6 +186,7 @@ jobs:
     env:
       CARGO_INCREMENTAL: 1  # Enable incremental compilation on self-hosted (reuses artifacts)
       CARGO_TERM_COLOR: always
+      PATH: /opt/homebrew/bin:/opt/homebrew/sbin:${{ env.PATH }}
 
     steps:
       - name: Checkout code
@@ -239,6 +240,7 @@ jobs:
     env:
       CARGO_INCREMENTAL: 1  # Enable incremental compilation on self-hosted (reuses artifacts)
       CARGO_TERM_COLOR: always
+      PATH: /opt/homebrew/bin:/opt/homebrew/sbin:${{ env.PATH }}
 
     steps:
       - name: Checkout code