chore: add rsdoctor diff action

.github/workflows/reusable-build-test.yml

@@ -141,3 +141,39 @@ jobs:
           NODE_NO_WARNINGS: 1
           WASM: 1
         run: pnpm run test:ci
+
+  diff:
+    name: Rsdoctor Diff
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Checkout
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+        with:
+          ref: ${{ inputs.ref }}
+
+      - name: Clone rspack-diff-minimal
+        run: git clone https://github.com/yifancong/rspack-diff-minimal.git
+
+      - name: Setup Pnpm
+        timeout-minutes: 5
+        uses: ./.github/actions/pnpm/setup
+        with:
+          node-version: 22
+
+      - name: Install dependencies
+        working-directory: rspack-diff-minimal
+        run: pnpm install
+
+      - name: Build project
+        working-directory: rspack-diff-minimal
+        run: pnpm run build
+
+      - name: Report Compressed Size
+        uses: web-infra-dev/rsdoctor-action@main
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          file_path: "rspack-diff-minimal/dist/rsdoctor-data.json"
+          target_branch: "chore/diff-v2"