fix(ci): macOS build aarch64-only, drop x86_64 cross-compile

Cross-compiling x86_64 from aarch64 fails on openssl-sys (no
cross pkg-config). Apple Silicon only — Intel Macs use Rosetta 2.

cc

.github/workflows/release-macos.yml

@@ -13,16 +13,8 @@ on:
 
 jobs:
   build-macos:
-    strategy:
-      matrix:
-        include:
-          - runner: macos-latest
-            target: aarch64-apple-darwin
-            arch: aarch64
-          - runner: macos-latest
-            target: x86_64-apple-darwin
-            arch: x86_64
-    runs-on: ${{ matrix.runner }}
+    # Apple Silicon only — Intel Macs run via Rosetta 2
+    runs-on: macos-latest
     permissions:
       contents: write
     steps:
@@ -86,7 +78,7 @@ jobs:
       - name: Setup Rust
         uses: dtolnay/rust-toolchain@stable
         with:
-          targets: ${{ matrix.target }}
+          targets: aarch64-apple-darwin
 
       - name: Rust cache
         uses: Swatinem/rust-cache@v2
@@ -97,29 +89,18 @@ jobs:
         run: npm ci
 
       - name: Build DMG
-        run: npm run tauri build -- --target ${{ matrix.target }} --bundles dmg
+        run: npm run tauri build -- --target aarch64-apple-darwin --bundles dmg
 
       - name: Collect artifacts
-        id: artifacts
-        env:
-          VERSION: ${{ steps.release.outputs.version }}
-          ARCH: ${{ matrix.arch }}
         run: |
           mkdir -p dist
-          cp -v src-tauri/target/${{ matrix.target }}/release/bundle/dmg/*.dmg dist/ || true
-          # Rename with arch for clarity
-          for f in dist/*.dmg; do
-            if [[ -f "$f" && ! "$f" =~ "_${ARCH}" ]]; then
-              base=$(basename "$f" .dmg)
-              mv "$f" "dist/${base}_${ARCH}.dmg"
-            fi
-          done
+          cp -v src-tauri/target/aarch64-apple-darwin/release/bundle/dmg/*.dmg dist/ || true
           ls -la dist
 
       - name: Upload artifacts
         uses: actions/upload-artifact@v4
         with:
-          name: qbz-macos-${{ matrix.arch }}
+          name: qbz-macos-aarch64
           path: dist/*
 
       - name: Publish GitHub Release Assets