fix(channel): improve proxy client compatibility and cache lifecycle (#6157)

* fix(channel): improve proxy client compatibility and cache lifecycle

* test(controller): use non-fatal assertions for channel tests

controller/codex_usage.go

@@ -99,7 +99,7 @@ func fetchCodexChannelWhamData(
 		return
 	}
 
-	client, err := service.NewProxyHttpClient(ch.GetSetting().Proxy)
+	client, err := service.GetHttpClientWithProxy(ch.GetSetting().Proxy)
 	if err != nil {
 		common.ApiError(c, err)
 		return
@@ -133,7 +133,6 @@ func fetchCodexChannelWhamData(
 			if encErr == nil {
 				_ = model.DB.Model(&model.Channel{}).Where("id = ?", ch.Id).Update("key", string(encoded)).Error
 				model.InitChannelCache()
-				service.ResetProxyClientCache()
 			}
 
 			ctx2, cancel2 := context.WithTimeout(c.Request.Context(), 15*time.Second)