build: capacitor 8 dependencies, config and android sync scripts

capacitor.config.ts

@@ -0,0 +1,25 @@
+import type { CapacitorConfig } from '@capacitor/cli';
+
+// sattle is a pure PWA (`quasar build -m pwa` -> dist/pwa); the native app is
+// that exact build wrapped. All platform divergence lives behind
+// src/capabilities/ - app code never imports a Capacitor plugin directly.
+//
+// appId eu.protom.sattle: the developer owns protom.eu (canonical git host
+// git.protom.eu). No OTA updater plugin on purpose (unlike the tbc-pwa
+// reference): PWA update semantics stay 'prompt' and the wrapper ships the
+// same dist/pwa, so a native release is cut like any app-store release.
+//
+// Signing-time TODOs (no release keystore exists yet):
+// - generate the release keystore and put its SHA-256 cert fingerprint into
+//   public/.well-known/assetlinks.json (placeholder value there today)
+// - once the PWA hosting origin is final, add an autoVerify https
+//   intent-filter for it in android/app/src/main/AndroidManifest.xml
+// - iOS: `npx cap add ios` on a macOS machine; fill the Team ID in
+//   public/.well-known/apple-app-site-association (stub there today)
+const config: CapacitorConfig = {
+  appId: 'eu.protom.sattle',
+  appName: 'sattle',
+  webDir: 'dist/pwa',
+};
+
+export default config;