fix(build): handle missing dependencies and Capacitor files during iOS build

Fixed build failures when test app dependencies aren't installed and when
Capacitor files don't exist during initial install.

Changes:
- Use `npx run-p` in test app build script to work without local install
- Add dependency check in build-native.sh before building Vue app
- Make fix-capacitor-plugins.js resilient to missing files during postinstall
  - Gracefully handles missing capacitor.plugins.json on first install
  - Provides clear messaging about when fixes will be applied
  - No longer exits with error when Capacitor hasn't been synced yet

This allows the build to complete successfully even when:
- npm dependencies aren't installed in test app
- Capacitor files don't exist yet (will be created during cap:sync:ios)

Files modified:
- scripts/build-native.sh
- test-apps/daily-notification-test/package.json
- test-apps/daily-notification-test/scripts/fix-capacitor-plugins.js

scripts/build-native.sh

@@ -171,6 +171,15 @@ build_plugin_for_test_app_ios() {
     # Navigate to test app directory
     cd test-apps/daily-notification-test || exit 1
     
+    # Install dependencies if node_modules doesn't exist or is missing key packages
+    if [ ! -d "node_modules" ] || [ ! -f "node_modules/.bin/run-p" ]; then
+        log_info "Installing test app dependencies..."
+        if ! npm install; then
+            log_error "Failed to install test app dependencies"
+            exit 1
+        fi
+    fi
+    
     # Build Vue app
     log_info "Building Vue app..."
     if ! npm run build; then