ci(amplify): run image optimizer in Amplify preBuild; upload artifacts from GH Action

.github/workflows/optimize-images.yml

@@ -35,14 +35,8 @@ jobs:
       - name: Run image optimizer
         run: npm run optimize-images
 
-      - name: Commit optimized images
-        run: |
-          git config user.name "github-actions[bot]"
-          git config user.email "github-actions[bot]@users.noreply.github.com"
-          git add public/images || true
-          if ! git diff --staged --quiet; then
-            git commit -m "chore(images): add optimized WebP images [skip ci]" || echo "no changes to commit"
-            git push
-          else
-            echo "No optimized images to commit"
-          fi
+      - name: Upload optimized images
+        uses: actions/upload-artifact@v4
+        with:
+          name: optimized-images
+          path: public/images

amplify.yml

@@ -0,0 +1,18 @@
+version: 1
+applications:
+  - frontend:
+      phases:
+        preBuild:
+          commands:
+            - npm ci
+            - npm run optimize-images
+        build:
+          commands:
+            - npm run build
+      artifacts:
+        baseDirectory: build
+        files:
+          - "**/*"
+      cache:
+        paths:
+          - node_modules/**/