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/pages/Schedules/schedule-form.integration.test.ts

@@ -59,7 +59,6 @@ describe('schedule edit form mapping', () => {
   });
 });
 
-
 describe('schedule notes normalization', () => {
   it('omits whitespace-only notes from the payload', () => {
     expect(