add pr check

.github/workflows/CI.yml

@@ -39,12 +39,12 @@ jobs:
           chmod +x gradlew
           ./gradlew assembleSnapshot -Pandroid.injected.signing.store.file=${{ steps.android_keystore.outputs.filePath }} -Pandroid.injected.signing.store.password=${{ secrets.KEY_STORE_PASSWORD }} -Pandroid.injected.signing.key.alias=${{ secrets.ALIAS }} -Pandroid.injected.signing.key.password=${{ secrets.KEY_PASSWORD }}
 
-      - name: Upload APK
+      - name: Upload APK artifact
         uses: actions/upload-artifact@v4
         if: ${{ success() }}
         with:
           name: app-snapshot
-          path: ${{ github.workspace }}/app/build/outputs/apk/snapshot/*.apk
+          path: ${{ github.workspace }}/app/build/outputs/apk/snapshot/
 
       - name: Get short SHA
         id: short_sha

.github/workflows/check.yml

@@ -0,0 +1,46 @@
+name: Pull Request Check
+on:
+  pull_request:
+    branches:
+      - master
+    paths:
+      - 'app/**'
+      - 'gradle/**'
+      - '.github/workflows/**'
+      - '*.gradle.kts'
+      - 'gradle.properties'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out
+        uses: actions/checkout@v4
+
+      - name: Setup Java
+        uses: actions/setup-java@v3
+        with:
+          distribution: temurin
+          java-version: 21
+
+      - name: Setup Android environment
+        uses: android-actions/setup-android@v3
+
+      - name: Decode Keystore
+        uses: timheuer/base64-to-file@v1
+        id: android_keystore
+        with:
+          fileName: "android_keystore.jks"
+          encodedString: ${{ secrets.SIGNING_KEY }}
+
+      - name: Build APK with Gradle
+        run: |
+          chmod +x gradlew
+          ./gradlew assembleSnapshot -Pandroid.injected.signing.store.file=${{ steps.android_keystore.outputs.filePath }} -Pandroid.injected.signing.store.password=${{ secrets.KEY_STORE_PASSWORD }} -Pandroid.injected.signing.key.alias=${{ secrets.ALIAS }} -Pandroid.injected.signing.key.password=${{ secrets.KEY_PASSWORD }}
+
+      - name: Upload APK artifact
+        uses: actions/upload-artifact@v4
+        if: ${{ success() }}
+        with:
+          name: app-snapshot
+          path: ${{ github.workspace }}/app/build/outputs/apk/snapshot/