feat:DB 트리거 기반 데이터 변경 추적 시스템 구현

Phase 1: DB 기반 구축
- trigger_audit_logs 테이블 (RANGE 파티셔닝 15개, 3개 인덱스)
- 789개 MySQL AFTER 트리거 (263 테이블 × INSERT/UPDATE/DELETE)
- SetAuditSessionVariables 미들웨어 (@sam_actor_id, @sam_session_info)

Phase 2: 복구 메커니즘
- TriggerAuditLog 모델, TriggerAuditLogService, AuditRollbackService
- 6개 API 엔드포인트 (index, show, stats, history, rollback-preview, rollback)
- FormRequest 검증 (TriggerAuditLogIndexRequest, TriggerAuditRollbackRequest)

Phase 3: 관리 도구
- v_unified_audit VIEW (APP + TRIGGER 통합, COLLATE 처리)
- audit:partitions 커맨드 (파티션 추가/삭제, dry-run)
- audit:triggers 커맨드 (트리거 재생성, 테이블별/전체)
- 월 1회 파티션 자동 관리 스케줄러 등록

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Http/Requests/Audit/TriggerAuditLogIndexRequest.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Http\Requests\Audit;
+
+use App\Http\Requests\Traits\HasPagination;
+use Illuminate\Foundation\Http\FormRequest;
+
+class TriggerAuditLogIndexRequest extends FormRequest
+{
+    use HasPagination;
+
+    protected int $maxSize = 200;
+
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'page' => 'nullable|integer|min:1',
+            'size' => 'nullable|integer|min:1',
+            'table_name' => 'nullable|string|max:64',
+            'row_id' => 'nullable|string|max:64',
+            'dml_type' => 'nullable|string|in:INSERT,UPDATE,DELETE',
+            'tenant_id' => 'nullable|integer|min:1',
+            'actor_id' => 'nullable|integer|min:1',
+            'db_user' => 'nullable|string|max:100',
+            'from' => 'nullable|date',
+            'to' => 'nullable|date|after_or_equal:from',
+            'sort' => 'nullable|string|in:created_at,id',
+            'order' => 'nullable|string|in:asc,desc',
+        ];
+    }
+}

app/Http/Requests/Audit/TriggerAuditRollbackRequest.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Http\Requests\Audit;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class TriggerAuditRollbackRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'confirm' => 'required|boolean|accepted',
+        ];
+    }
+}