Fix remaining issues: CDN config, min_staff_rank defaults, blade views

- Centralize all CDN URLs in config('habbo.cdn.*') with env overrides
- Replace hardcoded CDN URLs in 12+ blade views (fancybox, sweetalert2,
  alpinejs, fontsource, fontawesome, html2canvas)
- Fix font-awesome 7.0.0 (non-existent) -> config with 6.7.0 default
- Centralize all hardcoded min_staff_rank defaults (3 and 7) to config
- Add MIN_STAFF_RANK and MIN_STAFF_RANK_LOGIN env variables

app/Services/Community/StaffService.php

@@ -18,7 +18,7 @@ readonly class StaffService
             return Cache::get('staff_positions');
         }
 
-        $minStaffRank = (int) setting('min_staff_rank', 3);
+        $minStaffRank = (int) setting('min_staff_rank', config('habbo.defaults.min_staff_rank_login'));
         $minRankToSeeHidden = (int) setting('min_rank_to_see_hidden_staff', 7);
         $userRank = Auth::check() ? Auth::user()->rank : 0;
 
@@ -49,7 +49,7 @@ readonly class StaffService
             return Cache::get('staff_ids');
         }
 
-        $minRank = (int) setting('min_staff_rank', 3);
+        $minRank = (int) setting('min_staff_rank', config('habbo.defaults.min_staff_rank_login'));
 
         $staffIds = User::query()->select('id')
             ->where('rank', '>=', $minRank)