Fix release workflow secret usage in if conditions

Author: oKFCo

.github/workflows/release.yml

@@ -12,6 +12,11 @@ permissions:
 jobs:
   build-android:
     runs-on: ubuntu-latest
+    env:
+      ANDROID_KEYSTORE_BASE64: ${{ secrets.ANDROID_KEYSTORE_BASE64 }}
+      ANDROID_STORE_PASSWORD: ${{ secrets.ANDROID_STORE_PASSWORD }}
+      ANDROID_KEY_ALIAS: ${{ secrets.ANDROID_KEY_ALIAS }}
+      ANDROID_KEY_PASSWORD: ${{ secrets.ANDROID_KEY_PASSWORD }}
 
     steps:
       - name: Checkout
@@ -32,23 +37,23 @@ jobs:
         run: flutter pub get
 
       - name: Configure Android signing
-        if: ${{ secrets.ANDROID_KEYSTORE_BASE64 != '' }}
+        if: ${{ env.ANDROID_KEYSTORE_BASE64 != '' }}
         shell: bash
         run: |
-          echo "${{ secrets.ANDROID_KEYSTORE_BASE64 }}" | base64 --decode > android/release.keystore
+          echo "${ANDROID_KEYSTORE_BASE64}" | base64 --decode > android/release.keystore
           cat > android/key.properties <<EOF
           storeFile=release.keystore
-          storePassword=${{ secrets.ANDROID_STORE_PASSWORD }}
-          keyAlias=${{ secrets.ANDROID_KEY_ALIAS }}
-          keyPassword=${{ secrets.ANDROID_KEY_PASSWORD }}
+          storePassword=${ANDROID_STORE_PASSWORD}
+          keyAlias=${ANDROID_KEY_ALIAS}
+          keyPassword=${ANDROID_KEY_PASSWORD}
           EOF
 
       - name: Build Android release APK
-        if: ${{ secrets.ANDROID_KEYSTORE_BASE64 != '' }}
+        if: ${{ env.ANDROID_KEYSTORE_BASE64 != '' }}
         run: flutter build apk --release
 
       - name: Build Android debug APK (fallback)
-        if: ${{ secrets.ANDROID_KEYSTORE_BASE64 == '' }}
+        if: ${{ env.ANDROID_KEYSTORE_BASE64 == '' }}
         run: flutter build apk --debug
 
       - name: Prepare Android artifact