ci: 固定 macOS runner 版本并确保 Rust target 安装

.github/workflows/build-proxy.yml

@@ -34,11 +34,11 @@ jobs:
             use_cross: true
           - name: macos-amd64
             target: x86_64-apple-darwin
-            os: macos-latest
+            os: macos-15-intel
             use_cross: false
           - name: macos-arm64
             target: aarch64-apple-darwin
-            os: macos-latest
+            os: macos-15
             use_cross: false
           - name: windows-amd64
             target: x86_64-pc-windows-msvc
@@ -53,6 +53,9 @@ jobs:
         with:
           targets: ${{ matrix.target }}
 
+      - name: Ensure Rust target is installed
+        run: rustup target add ${{ matrix.target }}
+
       - name: Rust cache
         uses: Swatinem/rust-cache@v2
         with: