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;

flake.nix

@@ -27,8 +27,13 @@
               nodejs_22
               corepack_22
               git
-              # extensible: capacitor/android SDK tooling, etc. go here as
-              # the project grows
+              # Android SDK/gradle are deliberately NOT provided via
+              # nixpkgs androidenv: composeAndroidPackages is heavy and
+              # fragile, and `npx cap sync android` needs no SDK. For
+              # native builds install Android Studio (or cmdline-tools +
+              # `sdkmanager "platforms;android-35" "build-tools"`) locally
+              # and point ANDROID_HOME at it; the gradle wrapper in
+              # android/ does the rest.
             ]
             # playwright e2e drives the system chromium (see
             # playwright.config.ts); nixpkgs chromium is linux-only

package.json

@@ -15,10 +15,19 @@
     "test:e2e": "playwright test",
     "test:e2e:ui": "playwright test --ui",
     "typecheck": "vue-tsc --noEmit",
+    "cap:sync": "quasar build -m pwa && cap sync android",
+    "cap:open": "cap open android",
     "postinstall": "quasar prepare --silent"
   },
   "dependencies": {
     "@agicash/qr-scanner": "^0.1.2",
+    "@aparajita/capacitor-biometric-auth": "10.0.0",
+    "@aparajita/capacitor-secure-storage": "8.0.0",
+    "@capacitor/android": "8.4.1",
+    "@capacitor/app": "8.1.1",
+    "@capacitor/clipboard": "8.0.1",
+    "@capacitor/core": "8.4.1",
+    "@capacitor/share": "8.0.1",
     "@fontsource/noto-sans": "^5.3.0",
     "@noble/curves": "^2.3.0",
     "@noble/hashes": "^2.3.0",
@@ -35,6 +44,7 @@
     "vue-router": "^5.0.6"
   },
   "devDependencies": {
+    "@capacitor/cli": "8.4.1",
     "@eslint/js": "^10.0.1",
     "@intlify/unplugin-vue-i18n": "^11.0.0",
     "@playwright/test": "^1.62.1",