Add membership fee system with disability discount and fix document permissions

Features:
- Implement two fee types: entrance fee and annual fee (both NT$1,000)
- Add 50% discount for disability certificate holders
- Add disability certificate upload in member profile
- Integrate disability verification into cashier approval workflow
- Add membership fee settings in system admin

Document permissions:
- Fix hard-coded role logic in Document model
- Use permission-based authorization instead of role checks

Additional features:
- Add announcements, general ledger, and trial balance modules
- Add income management and accounting entries
- Add comprehensive test suite with factories
- Update UI translations to Traditional Chinese

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/Http/Controllers/PaymentOrderController.php

@@ -59,14 +59,14 @@ class PaymentOrderController extends Controller
         if (!$financeDocument->canCreatePaymentOrder()) {
             return redirect()
                 ->route('admin.finance.show', $financeDocument)
-                ->with('error', '此財務申請單尚未完成審核流程，無法製作付款單。');
+                ->with('error', '此報銷申請單尚未完成審核流程，無法製作付款單。');
         }
 
         // Check if payment order already exists
         if ($financeDocument->paymentOrder !== null) {
             return redirect()
                 ->route('admin.payment-orders.show', $financeDocument->paymentOrder)
-                ->with('error', '此財務申請單已有付款單。');
+                ->with('error', '此報銷申請單已有付款單。');
         }
 
         $financeDocument->load(['member', 'submittedBy']);
@@ -98,7 +98,7 @@ class PaymentOrderController extends Controller
             }
             return redirect()
                 ->route('admin.finance.show', $financeDocument)
-                ->with('error', '此財務申請單尚未完成審核流程，無法製作付款單。');
+                ->with('error', '此報銷申請單尚未完成審核流程，無法製作付款單。');
         }
 
         $validated = $request->validate([