Revert login auto-redirect, keep button-based login page

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

routes/web.php

@@ -7,7 +7,6 @@ Route::get('/', function () {
     return redirect('/dashboard', 301);
 });
 
-Route::get('/dashboard/login', fn () => redirect()->route('auth.nextcloud'));
 Route::get('/dashboard/logout', fn () => redirect('/dashboard'));
 
 Route::get('/oauth/redirect', [OAuthController::class, 'redirect'])->name('auth.nextcloud');