feat: sam_stat P0 도메인 집계 구현 (Phase 2)

- 영업(Sales), 재무(Finance), 생산(Production) 3개 도메인 구현
- 일간/월간 통계 테이블 6개 마이그레이션 생성
- 도메인별 StatService (SalesStatService, FinanceStatService, ProductionStatService)
- Daily/Monthly 6개 Eloquent 모델 생성
- StatAggregatorService에 도메인 서비스 매핑 활성화
- StatJobLog duration_ms abs() 처리
- 스케줄러 등록 (일간 02:00, 월간 1일 03:00)

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

app/Models/Stats/Daily/StatFinanceDaily.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Models\Stats\Daily;
+
+use App\Models\Stats\BaseStatModel;
+
+class StatFinanceDaily extends BaseStatModel
+{
+    protected $table = 'stat_finance_daily';
+
+    protected $casts = [
+        'stat_date' => 'date',
+        'deposit_amount' => 'decimal:2',
+        'withdrawal_amount' => 'decimal:2',
+        'net_cashflow' => 'decimal:2',
+        'purchase_amount' => 'decimal:2',
+        'purchase_tax_amount' => 'decimal:2',
+        'receivable_balance' => 'decimal:2',
+        'payable_balance' => 'decimal:2',
+        'overdue_receivable' => 'decimal:2',
+        'bill_issued_amount' => 'decimal:2',
+        'bill_matured_amount' => 'decimal:2',
+        'card_transaction_amount' => 'decimal:2',
+        'bank_balance_total' => 'decimal:2',
+    ];
+}

app/Models/Stats/Daily/StatProductionDaily.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Models\Stats\Daily;
+
+use App\Models\Stats\BaseStatModel;
+
+class StatProductionDaily extends BaseStatModel
+{
+    protected $table = 'stat_production_daily';
+
+    protected $casts = [
+        'stat_date' => 'date',
+        'production_qty' => 'decimal:2',
+        'defect_qty' => 'decimal:2',
+        'defect_rate' => 'decimal:2',
+        'planned_hours' => 'decimal:2',
+        'actual_hours' => 'decimal:2',
+        'efficiency_rate' => 'decimal:2',
+        'delivery_rate' => 'decimal:2',
+    ];
+}

app/Models/Stats/Daily/StatSalesDaily.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Models\Stats\Daily;
+
+use App\Models\Stats\BaseStatModel;
+
+class StatSalesDaily extends BaseStatModel
+{
+    protected $table = 'stat_sales_daily';
+
+    protected $casts = [
+        'stat_date' => 'date',
+        'order_amount' => 'decimal:2',
+        'sales_amount' => 'decimal:2',
+        'sales_tax_amount' => 'decimal:2',
+        'shipment_amount' => 'decimal:2',
+    ];
+}

app/Models/Stats/Monthly/StatFinanceMonthly.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Models\Stats\Monthly;
+
+use App\Models\Stats\BaseStatModel;
+
+class StatFinanceMonthly extends BaseStatModel
+{
+    protected $table = 'stat_finance_monthly';
+
+    protected $casts = [
+        'deposit_total' => 'decimal:2',
+        'withdrawal_total' => 'decimal:2',
+        'net_cashflow' => 'decimal:2',
+        'purchase_total' => 'decimal:2',
+        'card_total' => 'decimal:2',
+        'receivable_end' => 'decimal:2',
+        'payable_end' => 'decimal:2',
+        'bank_balance_end' => 'decimal:2',
+        'mom_cashflow_change' => 'decimal:2',
+    ];
+}

app/Models/Stats/Monthly/StatProductionMonthly.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Models\Stats\Monthly;
+
+use App\Models\Stats\BaseStatModel;
+
+class StatProductionMonthly extends BaseStatModel
+{
+    protected $table = 'stat_production_monthly';
+
+    protected $casts = [
+        'production_qty' => 'decimal:2',
+        'defect_qty' => 'decimal:2',
+        'avg_defect_rate' => 'decimal:2',
+        'avg_efficiency_rate' => 'decimal:2',
+        'avg_delivery_rate' => 'decimal:2',
+        'total_planned_hours' => 'decimal:2',
+        'total_actual_hours' => 'decimal:2',
+    ];
+}

app/Models/Stats/Monthly/StatSalesMonthly.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Models\Stats\Monthly;
+
+use App\Models\Stats\BaseStatModel;
+
+class StatSalesMonthly extends BaseStatModel
+{
+    protected $table = 'stat_sales_monthly';
+
+    protected $casts = [
+        'order_amount' => 'decimal:2',
+        'sales_amount' => 'decimal:2',
+        'shipment_amount' => 'decimal:2',
+        'avg_order_amount' => 'decimal:2',
+        'top_client_amount' => 'decimal:2',
+        'mom_growth_rate' => 'decimal:2',
+        'yoy_growth_rate' => 'decimal:2',
+    ];
+}

app/Models/Stats/StatJobLog.php

@@ -26,7 +26,7 @@ public function markRunning(): void
     public function markCompleted(int $recordsProcessed = 0): void
     {
         $durationMs = $this->started_at
-            ? (int) now()->diffInMilliseconds($this->started_at)
+            ? abs((int) now()->diffInMilliseconds($this->started_at))
             : null;
 
         $this->update([
@@ -40,7 +40,7 @@ public function markCompleted(int $recordsProcessed = 0): void
     public function markFailed(string $errorMessage): void
     {
         $durationMs = $this->started_at
-            ? (int) now()->diffInMilliseconds($this->started_at)
+            ? abs((int) now()->diffInMilliseconds($this->started_at))
             : null;
 
         $this->update([