feat: 增强智能体模型调用兼容能力

- 增加模型流式开关和 HTTP 传输策略配置

- 使用 AgentScope 执行基础连接、流式与 VLM 双阶段验证

- 固定多模态校验图片并统一验证状态展示

easyflow-ui-admin/app/src/views/ai/agents/composables/useAgentDesignerState.ts

@@ -84,6 +84,7 @@ export function createEmptyAgent(): AgentInfo {
     categoryId: '',
     modelId: '',
     promptConfigJson: { systemPrompt: '' },
+    generationConfigJson: { stream: true },
     memoryConfigJson: {
       compressionParameter: {
         enabled: true,
@@ -111,6 +112,10 @@ function normalizeAgent(agent?: AgentInfo): AgentInfo {
       systemPrompt: '',
       ...source.promptConfigJson,
     },
+    generationConfigJson: {
+      ...source.generationConfigJson,
+      stream: source.generationConfigJson?.stream !== false,
+    },
     memoryConfigJson: {
       ...memoryConfig,
       compressionParameter: {
@@ -356,6 +361,10 @@ export function useAgentDesignerState() {
       interactionConfigJson: buildInteractionConfigPayload(
         state.agent.interactionConfigJson,
       ),
+      generationConfigJson: {
+        ...state.agent.generationConfigJson,
+        stream: state.agent.generationConfigJson?.stream !== false,
+      },
       memoryConfigJson: {
         ...restMemoryConfigJson,
         compressionParameter: {