Add mobile favorites UX and Android deep link support

app/tests/Feature/SitePagesTest.php

@@ -15,6 +15,9 @@ class SitePagesTest extends TestCase
         config()->set('dewemoji.apk_release.r2_public_base_url', 'https://downloads.example.com');
         config()->set('dewemoji.apk_release.r2_keys.latest_apk', 'apk/dewemoji-latest.apk');
         config()->set('dewemoji.apk_release.r2_keys.version_json', 'apk/version.json');
+        config()->set('dewemoji.apk_release.assetlinks.fingerprints', [
+            'AA:BB:CC:DD:EE:FF:00:11:22:33:44:55:66:77:88:99:AA:BB:CC:DD:EE:FF:00:11:22:33:44:55:66:77:88:99',
+        ]);
     }
 
     public function test_core_pages_are_available(): void
@@ -54,4 +57,19 @@ class SitePagesTest extends TestCase
             ->assertStatus(302)
             ->assertRedirect('https://downloads.example.com/apk/dewemoji-latest.apk');
     }
+
+    public function test_assetlinks_endpoint_is_available(): void
+    {
+        $this->get('/.well-known/assetlinks.json')
+            ->assertOk()
+            ->assertJson([
+                [
+                    'relation' => ['delegate_permission/common.handle_all_urls'],
+                    'target' => [
+                        'namespace' => 'android_app',
+                        'package_name' => 'com.dewemoji.app',
+                    ],
+                ],
+            ]);
+    }
 }