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-navigation.integration.test.ts

@@ -13,11 +13,7 @@ describe('permission navigation', () => {
 
   it('lands teachers on the teacher workspace without global student or class access', () => {
     expect(
-      findFirstAccessiblePath([
-        'teacher-workspace:view',
-        'schedule:view',
-        'attendance:view',
-      ]),
+      findFirstAccessiblePath(['teacher-workspace:view', 'schedule:view', 'attendance:view']),
     ).toBe('/teacher-workspace');
     expect(canAccessPath('/students', ['teacher-workspace:view'])).toBe(false);
     expect(canAccessPath('/classes', ['teacher-workspace:view'])).toBe(false);