ci: retry transient SQLCipher asset downloads

Jenkinsfile

@@ -98,8 +98,10 @@ PY
                         # Keep warnings/errors fatal while allowing the repository's existing
                         # informational style lints to be cleaned up independently.
                         "$FLUTTER_ROOT/bin/flutter" analyze --no-pub --no-fatal-infos
-                        "$FLUTTER_ROOT/bin/flutter" test --no-pub
                     '''
+                    retry(3) {
+                        sh '"$FLUTTER_ROOT/bin/flutter" test --no-pub'
+                    }
                 }
             }
         }
@@ -107,6 +109,7 @@ PY
         stage('Build arm64 Internal Release') {
             steps {
                 dir('frontend') {
+                    retry(3) {
                         sh '''
                             set -euo pipefail
                             "$FLUTTER_ROOT/bin/flutter" build apk \
@@ -120,6 +123,7 @@ PY
                             cp "$source_apk" "$APK_PATH"
                         '''
                     }
+                }
                 sh '''
                     set -euo pipefail
                     "$ANDROID_HOME/build-tools/36.1.0/apksigner" verify --verbose "$APK_PATH"