feat(ci): parallelize lighthouse and add artifact sharing

.github/workflows/ci.yml

@@ -64,9 +64,9 @@ jobs:
       - name: Upload build artifacts
         uses: actions/upload-artifact@v4
         with:
-          name: dist-${{ matrix.node-version }}
+          name: dist
           path: dist/
-          retention-days: 7
+          retention-days: 1
 
   backend:
     runs-on: ubuntu-latest
@@ -96,6 +96,12 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Download build artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist/
+
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
@@ -116,6 +122,12 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Download build artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist/
+
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
@@ -147,6 +159,12 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Download build artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist/
+
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
@@ -169,7 +187,6 @@ jobs:
 
   lighthouse:
     runs-on: ubuntu-latest
-    needs: [frontend]
 
     steps:
       - name: Checkout