diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..7e4c289
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,91 @@
+name: Web Check
+
+permissions:
+  contents: read
+
+on: ["pull_request", "workflow_call"]
+
+jobs:
+  ci:
+    runs-on: ${{ matrix.os }}
+    continue-on-error: ${{ matrix.experimental }}
+    strategy:
+      fail-fast: true
+      matrix:
+        os: [ubuntu-latest]
+        node: [24.19]
+        experimental: [false]
+    name: 👷 CI @qwik.dev/astro Node-${{ matrix.node }} under ${{ matrix.os }}
+
+    steps:
+      - name: 🚚 Get latest code
+        uses: actions/checkout@v7
+
+      - name: Setp pnpm
+        uses: pnpm/action-setup@v6
+        with:
+          version: 11
+
+      - name: 🎉 Setup Node.js
+        uses: actions/setup-node@v7
+        with:
+          node-version: ${{ matrix.node }}
+          cache: 'pnpm'
+          cache-dependency-path: web/pnpm-lock.yaml
+
+      - name: ✨ Install Frontend-dependencies
+        working-directory: web
+        run: |
+          corepack enable
+          pnpm install --frozen-lockfile
+
+      - name: ✅ Check code style
+        working-directory: web
+        run: pnpm check
+
+      - name: Build Frontend
+        working-directory: web
+        run: pnpm build
+
+      - name: Check LittleFS-Partitions-size
+        working-directory: web
+        run: |
+          SIZE=$(du -sb dist | cut -f1)
+          LIMIT=$((2 * 1024 * 1024))  # 2 MB, eure littlefs-Partitionsgröße
+          echo "Frontend-Build: $((SIZE / 1024)) KB / $((LIMIT / 1024)) KB"
+          if [ "$SIZE" -gt "$LIMIT" ]; then
+            echo "::error::Frontend-Build (${SIZE} Byte) does not fit into littlefs-Partition (${LIMIT} Byte)!"
+            exit 1
+          fi
+
+      #
+      # --- Build Firmware (automatically bind web/dist over littlefs_create_partition_image)
+      #
+
+      # https://github.com/actions/cache
+      - name: Cache ESP-IDF Preview
+        uses: actions/cache@v6
+        with:
+          path: ~/esp-idf-preview
+          key: esp-idf-preview-102122904ad
+
+      - name: Clone ESP-IDF Preview (if not in Cache)
+        run: |
+          if [ ! -d ~/esp-idf-preview/.git ]; then
+            git clone --recursive https://github.com/espressif/esp-idf.git ~/esp-idf-preview
+            cd ~/esp-idf-preview
+            git checkout 102122904ad
+            git submodule update --init --recursive
+          fi
+
+      - name: Install Toolchain
+        run: |
+          cd ~/esp-idf-preview
+          ./install.sh esp32s31
+
+      - name: Build firmware
+        run: |
+          . ~/esp-idf-preview/export.sh
+          cd ot_br
+          idf.py --preview set-target esp32s31
+          idf.py build
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index f97fe44..fb52e50 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -58,11 +58,10 @@ jobs:
           LIMIT=$((2 * 1024 * 1024))  # 2 MB, eure littlefs-Partitionsgröße
           echo "Frontend-Build: $((SIZE / 1024)) KB / $((LIMIT / 1024)) KB"
           if [ "$SIZE" -gt "$LIMIT" ]; then
-            echo "::error::Frontend-Build (${SIZE} Byte) überschreitet die littlefs-Partition (${LIMIT} Byte)!"
+            echo "::error::Frontend-Build (${SIZE} Byte) does not fit into littlefs-Partition (${LIMIT} Byte)!"
             exit 1
           fi
 
-
       #
       # --- Build Firmware (automatically bind web/dist over littlefs_create_partition_image)
 
@@ -94,6 +93,8 @@ jobs:
           idf.py --preview set-target esp32s31
           idf.py build -D PROJECT_VER=${GITHUB_REF_NAME}
 
+      ## create release
+
       - name: Rename Artifacts
         run: |
           cd ot_br/build
diff --git a/.github/workflows/web-check.yml b/.github/workflows/web-check.yml
deleted file mode 100644
index 07c5a9e..0000000
--- a/.github/workflows/web-check.yml
+++ /dev/null
@@ -1,44 +0,0 @@
-name: Web Check
-
-permissions:
-  contents: read
-
-on: ["pull_request", "workflow_call"]
-
-jobs:
-  ci:
-    runs-on: ${{ matrix.os }}
-    continue-on-error: ${{ matrix.experimental }}
-    strategy:
-      fail-fast: true
-      matrix:
-        os: [ubuntu-latest]
-        node: [24.19]
-        experimental: [false]
-    name: 👷 CI @qwik.dev/astro Node-${{ matrix.node }} under ${{ matrix.os }}
-
-    steps:
-      - name: 🚚 Get latest code
-        uses: actions/checkout@v7
-
-      - name: Setp pnpm
-        uses: pnpm/action-setup@v6
-        with:
-          version: 11
-
-      - name: 🎉 Setup Node.js
-        uses: actions/setup-node@v7
-        with:
-          node-version: ${{ matrix.node }}
-          cache: 'pnpm'
-          cache-dependency-path: web/pnpm-lock.yaml
-
-      - name: ✨ Install dependencies
-        working-directory: web
-        run: |
-          corepack enable
-          pnpm install
-
-      - name: ✅ Check code style
-        working-directory: web
-        run: pnpm check
\ No newline at end of file