Nest Care branches under settings with Frontdesk-style UI.

Move branch routes to /settings/branches, restyle list/create/edit with settings layout and breadcrumbs, and keep legacy /branches redirects.

tests/Feature/CareWebTest.php

@@ -131,7 +131,9 @@ class CareWebTest extends TestCase
         $this->actingAs($this->user)
             ->get(route('care.branches.index'))
             ->assertOk()
-            ->assertSee('Main Branch');
+            ->assertSee('All branches')
+            ->assertSee('Main Branch')
+            ->assertSee('Settings');
     }
 
     public function test_members_index_loads(): void