feat: refine admin forms, attendance and finance workflows

Squash merge PR #23.

Included changes:
- complete occupancy check-in required fields/default payload
- improve responsive admin management pages
- fix attendance edge cases and attendance period config
- refine wallet/finance-related workflow handling

Checks:
- npm run typecheck -w apps/admin
- npm run typecheck -w apps/server

apps/admin/src/auth/permission-store.ts

@@ -3,7 +3,9 @@ export const PERMISSIONS_UPDATED_EVENT = 'permissions-updated';
 export function readPermissions(): string[] {
   try {
     const value = JSON.parse(localStorage.getItem('permissions') || '[]');
-    return Array.isArray(value) ? value.filter((item): item is string => typeof item === 'string') : [];
+    return Array.isArray(value)
+      ? value.filter((item): item is string => typeof item === 'string')
+      : [];
   } catch {
     return [];
   }