feat(notifications): scaffold GET /v1/account/alerts/:alertId/track endpoint

Adds a public-scope tracking-pixel endpoint skeleton that always returns a
1x1 transparent PNG. The body is intentionally minimal so the email-tracking
read-flag flip can be wired up cleanly in Wave 3 (ST14) once the JWT decode
and DB write paths are designed.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/Appwrite/Platform/Modules/Account/Http/Alerts/Track/Get.php

@@ -0,0 +1,68 @@
+<?php
+
+namespace Appwrite\Platform\Modules\Account\Http\Alerts\Track;
+
+use Appwrite\SDK\AuthType;
+use Appwrite\SDK\ContentType;
+use Appwrite\SDK\Method;
+use Appwrite\SDK\Response as SDKResponse;
+use Appwrite\Utopia\Response;
+use Utopia\Database\Database;
+use Utopia\Database\Validator\UID;
+use Utopia\Platform\Action;
+use Utopia\Platform\Scope\HTTP;
+use Utopia\Validator\Text;
+
+class Get extends Action
+{
+    use HTTP;
+
+    public static function getName(): string
+    {
+        return 'getAlertTrack';
+    }
+
+    public function __construct()
+    {
+        $this
+            ->setHttpMethod(Action::HTTP_REQUEST_METHOD_GET)
+            ->setHttpPath('/v1/account/alerts/:alertId/track')
+            ->desc('Track alert')
+            ->groups(['api', 'account'])
+            ->label('scope', 'public')
+            ->label('sdk', new Method(
+                namespace: 'account',
+                name: 'getAlertTrack',
+                description: '/docs/references/account/get-alert-track.md',
+                auth: [AuthType::SESSION, AuthType::JWT],
+                responses: [
+                    new SDKResponse(
+                        code: Response::STATUS_CODE_OK,
+                        model: Response::MODEL_NONE,
+                    ),
+                ],
+                contentType: ContentType::IMAGE_PNG,
+            ))
+            ->param('alertId', '', new UID(), 'Alert ID.')
+            ->param('jwt', '', new Text(2048, 0), 'Tracking token.', true)
+            ->inject('response')
+            ->inject('dbForPlatform')
+            ->callback($this->action(...));
+    }
+
+    public function action(
+        string $alertId,
+        string $jwt,
+        Response $response,
+        Database $dbForPlatform,
+    ): void {
+        // 1x1 transparent PNG. Wave 3 (ST14) will replace this body with
+        // JWT decode + read-flag flip; the skeleton always returns the pixel.
+        $pixel = base64_decode('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP8/5+hHgAHggJ/PchI7wAAAABJRU5ErkJggg==');
+
+        $response
+            ->setContentType('image/png')
+            ->addHeader('Cache-Control', 'no-store')
+            ->send($pixel);
+    }
+}

src/Appwrite/Platform/Modules/Account/Services/Http.php

@@ -12,6 +12,7 @@ use Appwrite\Platform\Modules\Account\Http\Account\MFA\RecoveryCodes\Create as C
 use Appwrite\Platform\Modules\Account\Http\Account\MFA\RecoveryCodes\Get as GetRecoveryCodes;
 use Appwrite\Platform\Modules\Account\Http\Account\MFA\RecoveryCodes\Update as UpdateRecoveryCodes;
 use Appwrite\Platform\Modules\Account\Http\Account\MFA\Update as UpdateMfa;
+use Appwrite\Platform\Modules\Account\Http\Alerts\Track\Get as TrackAlert;
 use Utopia\Platform\Service;
 
 class Http extends Service
@@ -29,6 +30,7 @@ class Http extends Service
             ->addAction(UpdateRecoveryCodes::getName(), new UpdateRecoveryCodes())
             ->addAction(GetRecoveryCodes::getName(), new GetRecoveryCodes())
             ->addAction(CreateChallenge::getName(), new CreateChallenge())
-            ->addAction(UpdateChallenge::getName(), new UpdateChallenge());
+            ->addAction(UpdateChallenge::getName(), new UpdateChallenge())
+            ->addAction(TrackAlert::getName(), new TrackAlert());
     }
 }