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/Auth/RegisteredUserController.php

@@ -3,6 +3,7 @@
 namespace App\Http\Controllers\Auth;
 
 use App\Http\Controllers\Controller;
+use App\Models\Member;
 use App\Models\User;
 use App\Providers\RouteServiceProvider;
 use Illuminate\Auth\Events\Registered;
@@ -42,6 +43,15 @@ class RegisteredUserController extends Controller
             'password' => Hash::make($request->password),
         ]);
 
+        // Auto-create member record
+        Member::create([
+            'user_id' => $user->id,
+            'full_name' => $user->name,
+            'email' => $user->email,
+            'membership_status' => Member::STATUS_PENDING,
+            'membership_type' => Member::TYPE_REGULAR,
+        ]);
+
         event(new Registered($user));
 
         Auth::login($user);