docs(testing): EMULATOR_GUIDE prerequisites, API 35, Apple Silicon; build.sh Android-only sync

EMULATOR_GUIDE.md:
- Add "Checking and Installing Prerequisites" (how to check Node, npm, Java,
  ANDROID_HOME, adb, emulator, AVDs; install steps; reference to
  scripts/check-environment.js)
- Use API 35 and Pixel8_API35 throughout to match project compileSdk/targetSdk
- Document arm64-v8a for Apple Silicon and x86_64 for Intel; add
  troubleshooting for "x86_64 not supported on aarch64 host"
- Bump version to 1.1.0 and last-updated date

test-apps/daily-notification-test/scripts/build.sh:
- When building only Android (--android / --run-android), run
  cap:sync:android instead of cap:sync so iOS pod install is skipped and
  Android build/run succeeds without fixing the iOS Podfile

docs/testing/EMULATOR_GUIDE.md

@@ -71,12 +71,21 @@ This checks Node, npm, Java, and `ANDROID_HOME`. It does **not** check `adb`, `e
      sdkmanager "platform-tools"
      sdkmanager "emulator"
      sdkmanager "platforms;android-35"
-     sdkmanager "system-images;android-35;google_apis;x86_64"
      sdkmanager "build-tools;35.0.0"
      ```
 
-  5. Create at least one AVD:
+     Install a system image that matches your host CPU:
+     - **Apple Silicon (M1/M2/M3, aarch64):** `sdkmanager "system-images;android-35;google_apis;arm64-v8a"`
+     - **Intel Mac / Windows / Linux (x86_64):** `sdkmanager "system-images;android-35;google_apis;x86_64"`
 
+  5. Create at least one AVD (use the same image type you installed):
+
+     **Apple Silicon:**
+     ```bash
+     avdmanager create avd -n Pixel8_API35 -k "system-images;android-35;google_apis;arm64-v8a" -d "pixel_8"
+     ```
+
+     **Intel / x86_64:**
      ```bash
      avdmanager create avd -n Pixel8_API35 -k "system-images;android-35;google_apis;x86_64" -d "pixel_8"
      ```
@@ -280,6 +289,16 @@ pkill -f emulator
 emulator -avd Pixel8_API35 -verbose
 ```
 
+#### "x86_64 is not supported by the QEMU2 emulator on aarch64 host"
+On Apple Silicon (M1/M2/M3), the emulator cannot run x86_64 system images. Use an ARM64 image and AVD instead:
+
+```bash
+sdkmanager "system-images;android-35;google_apis;arm64-v8a"
+avdmanager delete avd -n Pixel8_API35   # if you already created an x86_64 AVD
+avdmanager create avd -n Pixel8_API35 -k "system-images;android-35;google_apis;arm64-v8a" -d "pixel_8"
+emulator -avd Pixel8_API35 -no-snapshot-load
+```
+
 #### ADB Connection Issues
 ```bash
 # Check ADB connection

test-apps/daily-notification-test/scripts/build.sh

@@ -220,12 +220,24 @@ if ! npm run build; then
 fi
 log_info "Web assets built successfully"
 
-# Step 2: Sync Capacitor
+# Step 2: Sync Capacitor (Android-only when building only Android to avoid iOS pod install failure)
 log_step "Syncing Capacitor with native projects..."
+if [ "$BUILD_ALL" = true ]; then
     if ! npm run cap:sync; then
         log_error "Capacitor sync failed"
         exit 1
     fi
+elif [ "$BUILD_ANDROID" = true ]; then
+    if ! npm run cap:sync:android; then
+        log_error "Capacitor sync (Android) failed"
+        exit 1
+    fi
+elif [ "$BUILD_IOS" = true ]; then
+    if ! npm run cap:sync:ios; then
+        log_error "Capacitor sync (iOS) failed"
+        exit 1
+    fi
+fi
 log_info "Capacitor sync completed"
 
 # Step 2.5: Ensure fix script ran (it should have via cap:sync, but verify for iOS)