Expand Link app with analytics, settings, and custom domains.

Add Bitly-style branded domain support via Ladill Domains SSL API,
account analytics dashboard, settings page with default domain picker,
and fix SSO/dashboard issues from QR Plus template leftovers.

Co-authored-by: Cursor <cursoragent@cursor.com>

routes/api.php

@@ -1,5 +1,6 @@
 <?php
 
+use App\Http\Controllers\Api\SslCallbackController;
 use Illuminate\Support\Facades\Route;
 
-// Ladill Link has no public API yet — management is web-only.
+Route::post('/ssl-callback', SslCallbackController::class)->name('api.ssl-callback');