Add multi-branch POS with team roles and branch-scoped cashiers.

Pro and Business users can manage branches, invite cashiers with branch assignment, and switch registers; sales and register flows respect acting location.

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

bootstrap/app.php

@@ -18,6 +18,7 @@ return Application::configure(basePath: dirname(__DIR__))
         ]));
         $middleware->web(append: [
             \App\Http\Middleware\SetActingAccount::class,
+            \App\Http\Middleware\SetActingLocation::class,
             \App\Http\Middleware\InjectBootSplash::class,
         ]);
         $middleware->alias([