feat(build): require Discord in production and keep Lite opt-in

.github/workflows/release.yml

@@ -50,6 +50,8 @@ jobs:
   build-android:
     runs-on: ubuntu-latest
     needs: get-version
+    env:
+      SPOTIFLAC_DISCORD_SDK: "1"
 
     steps:
       - name: Free disk space
@@ -142,7 +144,7 @@ jobs:
 
       - name: Build release APKs
         run: |
-          bash scripts/build_android.sh --target lib/main.dart
+          bash scripts/build_android.sh --production --target lib/main.dart
           ls -la build/app/outputs/flutter-apk/
 
       - name: Sign and verify release APKs (V1/V2/V3/V4)
@@ -212,9 +214,9 @@ jobs:
         run: |
           apk_dir=build/app/outputs/flutter-apk
           python3 scripts/check_backend_apk.py "$apk_dir/SpotiFLAC-${VERSION}-arm64.apk" \
-            --backend rust --abis arm64-v8a
+            --backend rust --abis arm64-v8a --discord-sdk
           python3 scripts/check_backend_apk.py "$apk_dir/SpotiFLAC-${VERSION}-arm32.apk" \
-            --backend rust --abis armeabi-v7a
+            --backend rust --abis armeabi-v7a --discord-sdk
           for abi in arm64 arm32; do
             "$ANDROID_HOME/build-tools/37.0.0/zipalign" -c -P 16 4 \
               "$apk_dir/SpotiFLAC-${VERSION}-${abi}.apk"
@@ -231,6 +233,8 @@ jobs:
   build-ios:
     runs-on: macos-15
     needs: get-version # Only depends on version, NOT android build!
+    env:
+      SPOTIFLAC_DISCORD_SDK: "1"
 
     steps:
       - name: Checkout repository
@@ -283,7 +287,13 @@ jobs:
 
       - name: Configure Rust application pods
         working-directory: ios
-        run: pod install
+        run: |
+          test -f ../third_party/spotiflac_discord/ios/Frameworks/discord_partner_sdk.xcframework/Info.plist || {
+            echo "Production requires the official Discord SDK. Run scripts/setup_discord_sdk.sh in the build environment first." >&2
+            exit 1
+          }
+          test -f ../third_party/spotiflac_discord/ios/Frameworks/Discord-License-Notices.txt
+          pod install
 
       - name: Build iOS (unsigned)
         run: |
@@ -307,6 +317,8 @@ jobs:
 
       - name: Audit Rust iOS archive before packaging
         run: |
+          test -f ios/build/Runner.xcarchive/Products/Applications/Runner.app/Frameworks/discord_partner_sdk.framework/discord_partner_sdk
+          test -f ios/build/Runner.xcarchive/Products/Applications/Runner.app/Discord-License-Notices.txt
           python3 -m unittest discover -s scripts -p 'test_check_backend_ios.py'
           python3 scripts/check_backend_ios.py \
             ios/build/Runner.xcarchive/Products/Applications/Runner.app \