use workflow specific cache instead of artifact

.github/workflows/test.yml

@@ -55,11 +55,13 @@ jobs:
       - name: Setup Rust, checkout and restore caches
         uses: ./.github/actions/setup-rust
 
-      - name: Download frontend build
+      - name: Restore frontend build cache
-        uses: actions/download-artifact@v4
+        uses: actions/cache@v4
         with:
-          name: frontend-build
           path: apps/frontend/build
+          key: frontend-build-${{ runner.os }}-run-${{ github.run_id }}
+          restore-keys: |
+            frontend-build-${{ runner.os }}-
 
       - name: Run tests
         run: cargo test --all-features
@@ -78,11 +80,13 @@ jobs:
         with:
           components: clippy, rustfmt
 
-      - name: Download frontend build
+      - name: Restore frontend build cache
-        uses: actions/download-artifact@v4
+        uses: actions/cache@v4
         with:
-          name: frontend-build
           path: apps/frontend/build
+          key: frontend-build-${{ runner.os }}-run-${{ github.run_id }}
+          restore-keys: |
+            frontend-build-${{ runner.os }}-
 
       - name: Run clippy
         run: cargo clippy --all-features -- -D warnings
@@ -150,8 +154,10 @@ jobs:
           cd apps/frontend
           pnpm build
 
-      - name: Upload frontend build artifact
+      - name: Cache frontend build
-        uses: actions/upload-artifact@v4
+        uses: actions/cache@v4
         with:
-          name: frontend-build
           path: apps/frontend/build
+          key: frontend-build-${{ runner.os }}-run-${{ github.run_id }}
+          restore-keys: |
+            frontend-build-${{ runner.os }}-