fix: simplify workflow keystore setup logic

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.github/workflows/release.yml

@@ -22,21 +22,21 @@ jobs:
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4
 
-      - name: Decode keystore
-        if: ${{ secrets.KEYSTORE_BASE64 != '' }}
+      - name: Setup keystore
         env:
           KEYSTORE_BASE64: ${{ secrets.KEYSTORE_BASE64 }}
         run: |
-          echo "$KEYSTORE_BASE64" | base64 -d > app/release.keystore
-
-      - name: Create debug keystore (fallback)
-        if: ${{ secrets.KEYSTORE_BASE64 == '' }}
-        run: |
-          mkdir -p ~/.android
-          keytool -genkey -v -keystore ~/.android/debug.keystore \
-            -storepass android -alias androiddebugkey -keypass android \
-            -keyalg RSA -keysize 2048 -validity 10000 \
-            -dname "CN=Android Debug,O=Android,C=US"
+          if [ -n "$KEYSTORE_BASE64" ]; then
+            echo "Using release keystore from secrets"
+            echo "$KEYSTORE_BASE64" | base64 -d > app/release.keystore
+          else
+            echo "No keystore secret found, creating debug keystore"
+            mkdir -p ~/.android
+            keytool -genkey -v -keystore ~/.android/debug.keystore \
+              -storepass android -alias androiddebugkey -keypass android \
+              -keyalg RSA -keysize 2048 -validity 10000 \
+              -dname "CN=Android Debug,O=Android,C=US"
+          fi
 
       - name: Build Release APK
         env:
@@ -47,6 +47,14 @@ jobs:
         run: ./gradlew assembleRelease
 
       - name: Upload APK to release
+        if: github.event_name == 'release'
         uses: softprops/action-gh-release@v2
         with:
           files: app/build/outputs/apk/release/app-release.apk
+
+      - name: Upload APK as artifact
+        if: github.event_name == 'workflow_dispatch'
+        uses: actions/upload-artifact@v4
+        with:
+          name: app-release
+          path: app/build/outputs/apk/release/app-release.apk