Add build step

Author: HaiChu20

.github/workflows/cicd.yml

@@ -48,4 +48,24 @@ jobs:
         ./install.sh all
         echo "ESP-IDF installation complete"
 
+    - name: Build Firmware
+      run: |
+        cd ~/esp/esp-idf
+        . ./export.sh
+        cd $GITHUB_WORKSPACE
+        # Force full clean to ensure sdkconfig.defaults is used
+        idf.py fullclean
+        # Set target to ESP32-C3 (RISC-V)
+        idf.py set-target esp32c3
+        # Verify the config was set correctly
+        echo "Checking MLONMCU_FRAMEWORK setting:"
+        grep "CONFIG_MLONMCU_FRAMEWORK" sdkconfig || echo "Not found in sdkconfig"
+        grep "CONFIG_MLONMCU_FRAMEWORK" sdkconfig.defaults || echo "Not found in defaults"
+        # Build with fresh config
+        idf.py build
 
+    - name: Upload firmware as artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: esp32-firmware
+        path: build/app.bin