refactor: move storage-diff.yml

.github/workflows/foundry.yml

@@ -180,4 +180,29 @@ jobs:
           
           if [ $FAILED -eq 1 ]; then
             exit 1
-          fi
+          fi
+
+  # -----------------------------------------------------------------------
+  # Forge Storage Diff
+  # -----------------------------------------------------------------------
+
+  storage-diff:
+    name: Preview (Upgrade)
+    runs-on: ubuntu-latest
+    steps:
+      # Check out repository with all submodules for complete codebase access.
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      # Install the Foundry toolchain.
+      - name: "Install Foundry"
+        uses: foundry-rs/foundry-toolchain@v1
+        with:
+          version: stable
+
+      # Run storage diff check to detect storage layout incompatibilities.
+      - name: "Mainnet Storage Diff"
+        run: |
+          bash bin/storage-diff.sh --rpc-url ${{ secrets.RPC_MAINNET }} --etherscan-key ${{ secrets.ETHERSCAN_API_KEY }} --input .github//storage-diff.json
+        id: storage-diff