consumer模块完成度95%，检查消费者前端bug并修复

uni_modules/ak-req/ak-req.uts

@@ -115,24 +115,56 @@ export class AkReq {
 			await this.refreshTokenIfNeeded(apikey);
 		}
 
-		// 统一 header，自动带上 Authorization/Content-Type/Accept
-		let headers = options.headers ?? ({} as UTSJSONObject);
-		const token = this.getToken();
-		if (token != null && token != "") {
-			headers = Object.assign({}, headers, { Authorization: `Bearer ${token}` }) as UTSJSONObject;
-		}
-		let contentType = options.contentType ?? '';
-		if (headers != null && typeof headers.getString === 'function') {
-			const headerContentType = headers.getString('Content-Type');
-			if (headerContentType != null) {
-				contentType = headerContentType;
+		// 构建新的 headers 对象，确保所有字段都被正确传递
+		const newHeaders = new UTSJSONObject()
+		
+		// 首先复制原始 headers
+		if (options.headers != null) {
+			const originalHeaders = options.headers
+			if (typeof originalHeaders.getString === 'function') {
+				// 复制 apikey
+				const apikey = originalHeaders.getString('apikey')
+				if (apikey != null) {
+					newHeaders.set('apikey', apikey)
+				}
+				// 复制 Content-Type
+				const contentType = originalHeaders.getString('Content-Type')
+				if (contentType != null) {
+					newHeaders.set('Content-Type', contentType)
+				}
+				// 复制 Prefer
+				const prefer = originalHeaders.getString('Prefer')
+				if (prefer != null) {
+					newHeaders.set('Prefer', prefer)
+				}
+				// 复制 Authorization（如果存在）
+				const auth = originalHeaders.getString('Authorization')
+				if (auth != null) {
+					newHeaders.set('Authorization', auth)
+				}
 			}
 		}
-		if (contentType != null && contentType != "") {
-			headers = Object.assign({}, headers, { 'Content-Type': contentType }) as UTSJSONObject;
+		
+		// 添加/更新 Authorization
+		const token = this.getToken();
+		if (token != null && token != "") {
+			newHeaders.set('Authorization', `Bearer ${token}`)
 		}
-		// 默认 Accept
-		headers = Object.assign({ Accept: 'application/json' } as UTSJSONObject, headers) as UTSJSONObject;
+		
+		// 确保 Content-Type 存在
+		if (newHeaders.getString('Content-Type') == null) {
+			const contentType = options.contentType ?? 'application/json'
+			if (contentType != null && contentType != "") {
+				newHeaders.set('Content-Type', contentType)
+			}
+		}
+		
+		// 添加 Accept
+		newHeaders.set('Accept', 'application/json')
+		
+		console.log('[AkReq.request] headers:', JSON.stringify(newHeaders))
+		
+		const headers = newHeaders
 
 		const timeout = options.timeout ?? 10000;
 		const maxRetry = Math.max(0, options.retryCount ?? 0);