ci(release): build and attach unsigned macOS binaries to releases (#26462)

.github/workflows/release-manual.yml

@@ -46,8 +46,15 @@ on:
         default: 'prod'
 
 jobs:
+  build-mac:
+    if: "github.repository == 'google-gemini/gemini-cli'"
+    uses: './.github/workflows/build-unsigned-mac-binaries.yml'
+    with:
+      ref: '${{ github.event.inputs.ref }}'
+
   release:
     if: "github.repository == 'google-gemini/gemini-cli'"
+    needs: ['build-mac']
     runs-on: 'ubuntu-latest'
     environment: "${{ github.event.inputs.environment || 'prod' }}"
     permissions:
@@ -83,6 +90,11 @@ jobs:
         working-directory: './release'
         run: 'npm ci'
 
+      - name: 'Download macOS Binaries'
+        uses: './.github/actions/download-mac-binaries'
+        with:
+          path: 'release/dist'
+
       - name: 'Prepare Release Info'
         id: 'release_info'
         working-directory: './release'