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/Controllers/Api/V1/Audit/TriggerAuditLogController.php

@@ -0,0 +1,83 @@
+<?php
+
+namespace App\Http\Controllers\Api\V1\Audit;
+
+use App\Helpers\ApiResponse;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\Audit\TriggerAuditLogIndexRequest;
+use App\Http\Requests\Audit\TriggerAuditRollbackRequest;
+use App\Services\Audit\AuditRollbackService;
+use App\Services\Audit\TriggerAuditLogService;
+
+class TriggerAuditLogController extends Controller
+{
+    public function __construct(
+        protected TriggerAuditLogService $service,
+        protected AuditRollbackService $rollbackService,
+    ) {}
+
+    /**
+     * 트리거 감사 로그 목록 조회
+     */
+    public function index(TriggerAuditLogIndexRequest $request)
+    {
+        return ApiResponse::handle(function () use ($request) {
+            return $this->service->paginate($request->validated());
+        }, __('message.fetched'));
+    }
+
+    /**
+     * 트리거 감사 로그 상세 조회
+     */
+    public function show(int $id)
+    {
+        return ApiResponse::handle(function () use ($id) {
+            return \App\Models\Audit\TriggerAuditLog::findOrFail($id);
+        }, __('message.fetched'));
+    }
+
+    /**
+     * 특정 레코드의 변경 이력
+     */
+    public function recordHistory(string $tableName, string $rowId)
+    {
+        return ApiResponse::handle(function () use ($tableName, $rowId) {
+            return $this->service->recordHistory($tableName, $rowId);
+        }, __('message.fetched'));
+    }
+
+    /**
+     * 통계 조회
+     */
+    public function stats()
+    {
+        return ApiResponse::handle(function () {
+            $tenantId = request()->query('tenant_id');
+
+            return $this->service->stats($tenantId ? (int) $tenantId : null);
+        }, __('message.fetched'));
+    }
+
+    /**
+     * 롤백 SQL 미리보기
+     */
+    public function rollbackPreview(int $id)
+    {
+        return ApiResponse::handle(function () use ($id) {
+            return [
+                'audit_id' => $id,
+                'rollback_sql' => $this->rollbackService->generateRollbackSQL($id),
+            ];
+        }, __('message.fetched'));
+    }
+
+    /**
+     * 롤백 실행
+     */
+    public function rollbackExecute(TriggerAuditRollbackRequest $request, int $id)
+    {
+        return ApiResponse::handle(function () use ($id) {
+            return $this->rollbackService->executeRollback($id);
+        }, __('message.updated'));
+    }
+}

app/Http/Middleware/SetAuditSessionVariables.php

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+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\DB;
+use Symfony\Component\HttpFoundation\Response;
+
+class SetAuditSessionVariables
+{
+    public function handle(Request $request, Closure $next): Response
+    {
+        if (auth()->check()) {
+            DB::statement('SET @sam_actor_id = ?', [auth()->id()]);
+            DB::statement('SET @sam_session_info = ?', [
+                json_encode([
+                    'ip' => $request->ip(),
+                    'ua' => mb_substr((string) $request->userAgent(), 0, 255),
+                    'route' => $request->route()?->getName(),
+                ], JSON_UNESCAPED_UNICODE),
+            ]);
+        }
+
+        return $next($request);
+    }
+}

app/Http/Requests/Audit/TriggerAuditLogIndexRequest.php

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+<?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

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+<?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',
+        ];
+    }
+}