diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 3acb74d..79714fd 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -24,3 +24,127 @@ jobs:
 
       - name: Test
         run: flutter test
+
+  build-debug-apk:
+    name: Build Debug APK
+    runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request'
+    steps:
+      - uses: actions/checkout@v5
+
+      - uses: actions/setup-java@v5
+        with:
+          distribution: 'temurin'
+          java-version: '17'
+
+      - uses: subosito/flutter-action@v2
+        with:
+          channel: 'stable'
+
+      - run: flutter pub get
+
+      - name: Generate icons and splash screens
+        run: |
+          dart run flutter_launcher_icons
+          dart run flutter_native_splash:create
+
+      - name: Build debug APK
+        run: flutter build apk --debug
+
+      - name: Upload debug APK
+        uses: actions/upload-artifact@v4
+        with:
+          name: debug-apk
+          path: build/app/outputs/flutter-apk/app-debug.apk
+          if-no-files-found: error
+          retention-days: 14
+
+  build-ios-simulator:
+    name: Build iOS Simulator
+    runs-on: macos-26
+    if: github.event_name == 'pull_request'
+    steps:
+      - uses: actions/checkout@v5
+
+      - uses: subosito/flutter-action@v2
+        with:
+          channel: 'stable'
+
+      - run: flutter pub get
+
+      - name: Generate icons and splash screens
+        run: |
+          dart run flutter_launcher_icons
+          dart run flutter_native_splash:create
+
+      - name: Build iOS simulator app
+        run: flutter build ios --debug --simulator
+
+      - name: Zip Runner.app
+        run: cd build/ios/iphonesimulator && zip -r "$GITHUB_WORKSPACE/Runner.app.zip" Runner.app
+
+      - name: Upload simulator build
+        uses: actions/upload-artifact@v4
+        with:
+          name: ios-simulator
+          path: Runner.app.zip
+          if-no-files-found: error
+          retention-days: 14
+
+  comment-artifacts:
+    name: Post Artifact Links
+    needs: [build-debug-apk, build-ios-simulator]
+    runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request' && !cancelled()
+    permissions:
+      pull-requests: write
+    steps:
+      - uses: actions/github-script@v7
+        continue-on-error: true
+        env:
+          APK_RESULT: ${{ needs.build-debug-apk.result }}
+          IOS_RESULT: ${{ needs.build-ios-simulator.result }}
+        with:
+          script: |
+            const runUrl = `${context.serverUrl}/${context.repo.owner}/${context.repo.repo}/actions/runs/${context.runId}#artifacts`;
+            const apkOk = process.env.APK_RESULT === 'success';
+            const iosOk = process.env.IOS_RESULT === 'success';
+
+            const lines = ['## Debug builds', ''];
+
+            if (apkOk || iosOk) {
+              lines.push(`Download from the [artifacts page](${runUrl}):`);
+              if (apkOk) lines.push('- **debug-apk** — install on Android device/emulator');
+              if (iosOk) lines.push('- **ios-simulator** — unzip and install with `xcrun simctl install booted Runner.app`');
+            }
+
+            if (!apkOk || !iosOk) {
+              const failed = [];
+              if (!apkOk) failed.push('Android APK');
+              if (!iosOk) failed.push('iOS simulator');
+              lines.push('', `**Failed:** ${failed.join(', ')} — check the [workflow run](${runUrl}) for details.`);
+            }
+
+            const body = lines.join('\n');
+
+            const { data: comments } = await github.rest.issues.listComments({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+            });
+            const existing = comments.find(c => c.body.startsWith('## Debug builds'));
+            if (existing) {
+              await github.rest.issues.updateComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                comment_id: existing.id,
+                body,
+              });
+            } else {
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: context.issue.number,
+                body,
+              });
+            }