feat:재무 모듈 모델 8종 추가 (Customer, Income, Expense, SalesRecord, Purchase, ConsultingFee, CustomerSettlement, Subscription)

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

app/Models/Finance/Subscription.php

@@ -0,0 +1,29 @@
+<?php
+namespace App\Models\Finance;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class Subscription extends Model
+{
+    use SoftDeletes;
+
+    protected $table = 'subscriptions';
+
+    protected $fillable = [
+        'tenant_id', 'customer', 'plan', 'monthly_fee', 'billing_cycle',
+        'start_date', 'next_billing', 'status', 'users', 'memo',
+    ];
+
+    protected $casts = [
+        'monthly_fee' => 'integer',
+        'users' => 'integer',
+        'start_date' => 'date',
+        'next_billing' => 'date',
+    ];
+
+    public function scopeForTenant($query, $tenantId)
+    {
+        return $query->where('tenant_id', $tenantId);
+    }
+}