fix: [models] Tenants 모델 관계 경로 오류 수정

- Client 관계: App\Models\Tenants\Client → App\Models\Orders\Client
  - Deposit, Withdrawal, Sale, Purchase 모델 수정
- User 관계: App\Models\User → App\Models\Members\User
  - Deposit, Withdrawal, Sale, Purchase, TaxInvoice, BarobillSetting, AiReport 모델 수정

Finance Deposits CRUD Test 통과 확인 (7/7 SUCCESS)

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/Models/Tenants/Sale.php

@@ -52,7 +52,7 @@ class Sale extends Model
      */
     public function client(): BelongsTo
     {
-        return $this->belongsTo(Client::class);
+        return $this->belongsTo(\App\Models\Orders\Client::class);
     }
 
     /**
@@ -68,7 +68,7 @@ public function deposit(): BelongsTo
      */
     public function creator(): BelongsTo
     {
-        return $this->belongsTo(\App\Models\User::class, 'created_by');
+        return $this->belongsTo(\App\Models\Members\User::class, 'created_by');
     }
 
     /**