ci(release): build the APK for arm64-v8a only and report disk usage

The v0.1.2 release ran out of disk while Gradle unpacked the NDK; building
React Native's native code for four ABIs needs several more GB. Print df
before the build and after a failure to make the next shortage obvious.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.gitea/workflows/release.yml

@@ -64,11 +64,20 @@ jobs:
         with: { node-version: "${{ env.NODE_VERSION }}", cache: pnpm }
       - run: pnpm install --frozen-lockfile
 
+      - name: Свободное место
+        run: df -h / /tmp
+
       - name: Сборка APK
         working-directory: apps/mobile
+        # Только arm64-v8a: C++-часть React Native собирается под каждую ABI, и четыре ABI
+        # вместе с NDK (~2.5 ГБ) не помещаются на диск раннера. arm64 — все устройства с 2017+.
         run: |
           npx expo prebuild --platform android --clean --no-install
-          cd android && ./gradlew --no-daemon assembleRelease
+          cd android && ./gradlew --no-daemon assembleRelease -PreactNativeArchitectures=arm64-v8a
+
+      - name: Свободное место после сбоя
+        if: failure()
+        run: df -h / /tmp; du -sh ~/.gradle ~/.android apps/mobile/android 2>/dev/null || true
 
       - name: Подпись APK
         env: