fix(api-explorer): API 사용 통계 데이터 소스 변경

- api_request_logs 테이블 사용으로 변경 (실제 API 호출 기록)
- 기존 admin_api_histories는 API Explorer 테스트 기록용으로 유지
- ApiRequestLog 모델 추가
- URL에서 엔드포인트 경로 추출 (REGEXP_REPLACE 사용)
- DB facade 사용으로 Eloquent accessor 충돌 방지

변경 전: 테스트 호출 2건만 표시
변경 후: 실제 API 호출 857건+ 표시

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

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

app/Models/DevTools/ApiRequestLog.php

@@ -0,0 +1,68 @@
+<?php
+
+namespace App\Models\DevTools;
+
+use Illuminate\Database\Eloquent\Model;
+
+/**
+ * API 요청 로그 모델 (API 서버에서 기록된 실제 API 호출)
+ *
+ * @property int $id
+ * @property string $method
+ * @property string $url
+ * @property string|null $route_name
+ * @property array|null $request_headers
+ * @property array|null $request_body
+ * @property array|null $request_query
+ * @property int $response_status
+ * @property string|null $response_body
+ * @property int $duration_ms
+ * @property string|null $ip_address
+ * @property string|null $user_agent
+ * @property int|null $user_id
+ * @property int|null $tenant_id
+ * @property string|null $group_id
+ * @property \Carbon\Carbon $created_at
+ */
+class ApiRequestLog extends Model
+{
+    public $timestamps = false;
+
+    protected $table = 'api_request_logs';
+
+    protected $fillable = [
+        'method',
+        'url',
+        'route_name',
+        'request_headers',
+        'request_body',
+        'request_query',
+        'response_status',
+        'response_body',
+        'duration_ms',
+        'ip_address',
+        'user_agent',
+        'user_id',
+        'tenant_id',
+        'group_id',
+    ];
+
+    protected $casts = [
+        'request_headers' => 'array',
+        'request_body' => 'array',
+        'request_query' => 'array',
+        'response_status' => 'integer',
+        'duration_ms' => 'integer',
+        'user_id' => 'integer',
+        'tenant_id' => 'integer',
+        'created_at' => 'datetime',
+    ];
+
+    /**
+     * URL에서 엔드포인트 경로 추출 (쿼리스트링 제외)
+     */
+    public function getEndpointAttribute(): string
+    {
+        return parse_url($this->url, PHP_URL_PATH) ?? $this->url;
+    }
+}

app/Services/ApiExplorer/ApiUsageService.php

@@ -3,7 +3,6 @@
 namespace App\Services\ApiExplorer;
 
 use App\Models\DevTools\ApiDeprecation;
-use App\Models\DevTools\ApiHistory;
 use Illuminate\Support\Collection;
 use Illuminate\Support\Facades\DB;
 
@@ -23,13 +22,18 @@ public function __construct(
      */
     public function getUsageStats(): Collection
     {
-        return ApiHistory::select('endpoint', 'method')
+        // URL에서 경로만 추출 (도메인 및 쿼리스트링 제거)
+        // 예: https://api.sam.kr/api/v1/users?page=1 → /api/v1/users
+        // Note: DB facade 사용 (Eloquent accessor 충돌 방지)
+        return DB::table('api_request_logs')
+            ->selectRaw("REGEXP_REPLACE(SUBSTRING_INDEX(url, '?', 1), '^https?://[^/]+', '') as endpoint")
+            ->addSelect('method')
             ->selectRaw('COUNT(*) as call_count')
             ->selectRaw('MAX(created_at) as last_called_at')
             ->selectRaw('AVG(duration_ms) as avg_duration_ms')
             ->selectRaw('SUM(CASE WHEN response_status >= 200 AND response_status < 300 THEN 1 ELSE 0 END) as success_count')
             ->selectRaw('SUM(CASE WHEN response_status >= 400 THEN 1 ELSE 0 END) as error_count')
-            ->groupBy('endpoint', 'method')
+            ->groupByRaw("REGEXP_REPLACE(SUBSTRING_INDEX(url, '?', 1), '^https?://[^/]+', ''), method")
             ->orderByDesc('call_count')
             ->get();
     }
@@ -224,8 +228,10 @@ public function getStaleApis(int $days = 30): Collection
     {
         $cutoffDate = now()->subDays($days);
 
-        // 최근 호출된 API
-        $recentlyUsed = ApiHistory::select('endpoint', 'method')
+        // 최근 호출된 API (DB facade 사용 - Eloquent accessor 충돌 방지)
+        $recentlyUsed = DB::table('api_request_logs')
+            ->selectRaw("REGEXP_REPLACE(SUBSTRING_INDEX(url, '?', 1), '^https?://[^/]+', '') as endpoint")
+            ->addSelect('method')
             ->where('created_at', '>=', $cutoffDate)
             ->distinct()
             ->get()
@@ -246,9 +252,10 @@ public function getStaleApis(int $days = 30): Collection
      */
     public function getDailyTrend(int $days = 30): Collection
     {
-        return ApiHistory::select(DB::raw('DATE(created_at) as date'))
+        return DB::table('api_request_logs')
+            ->select(DB::raw('DATE(created_at) as date'))
             ->selectRaw('COUNT(*) as call_count')
-            ->selectRaw('COUNT(DISTINCT CONCAT(endpoint, "|", method)) as unique_endpoints')
+            ->selectRaw("COUNT(DISTINCT CONCAT(REGEXP_REPLACE(SUBSTRING_INDEX(url, '?', 1), '^https?://[^/]+', ''), '|', method)) as unique_endpoints")
             ->where('created_at', '>=', now()->subDays($days))
             ->groupBy('date')
             ->orderBy('date')