feat: ConnectAI structural hardening and retrieval precision improvements

src/lib/api.ts

@@ -1,18 +1,12 @@
 import { logInfo, logError } from '../utils';
-
-export enum ApiErrorType {
-    AUTH_FAILURE = 'AUTH_FAILURE',
-    RATE_LIMIT = 'RATE_LIMIT',
-    NETWORK_TIMEOUT = 'NETWORK_TIMEOUT',
-    SERVER_ERROR = 'SERVER_ERROR',
-    UNKNOWN = 'UNKNOWN'
-}
+import { ErrorType } from '../types/interfaces';
+import { ErrorClassifier } from './engine';
 
 export interface ApiResponse<T> {
     success: boolean;
     data?: T;
     error?: {
-        type: ApiErrorType;
+        type: ErrorType;
         message: string;
         isRecoverable: boolean;
     };
@@ -33,9 +27,6 @@ export class ExternalApiHandler {
         return false; // 현재는 기본적으로 수동 개입 필요로 처리
     }
 
-    /**
-     * 지능형 요청 래퍼 (Resilient Fetch)
-     */
     public static async request<T>(
         call: () => Promise<T>,
         context: string
@@ -45,25 +36,18 @@ export class ExternalApiHandler {
             return { success: true, data };
         } catch (error: any) {
             logError(`[ApiHandler] [${context}] 호출 실패:`, error);
-            const errorType = this.classifyError(error);
+            
+            // ErrorClassifier를 통해 시스템 통합 분류 적용
+            const { type, rule } = ErrorClassifier.classify(error);
             
             return {
                 success: false,
                 error: {
-                    type: errorType,
+                    type,
                     message: error.message,
-                    isRecoverable: errorType === ApiErrorType.NETWORK_TIMEOUT || errorType === ApiErrorType.RATE_LIMIT
+                    isRecoverable: type === ErrorType.TRANSIENT || type === ErrorType.AUTH_FAILURE
                 }
             };
         }
     }
-
-    private static classifyError(error: any): ApiErrorType {
-        const msg = error.message || '';
-        if (msg.includes('401') || msg.includes('unauthorized')) return ApiErrorType.AUTH_FAILURE;
-        if (msg.includes('429') || msg.includes('rate limit')) return ApiErrorType.RATE_LIMIT;
-        if (msg.includes('timeout') || msg.includes('ETIMEDOUT')) return ApiErrorType.NETWORK_TIMEOUT;
-        if (msg.includes('500') || msg.includes('502') || msg.includes('503')) return ApiErrorType.SERVER_ERROR;
-        return ApiErrorType.UNKNOWN;
-    }
 }