feat: streamline workflow orchestration and chat routing

Add Zhipu web search integration, remove obsolete workflow nodes and resume handling, and separate model, agent, and workflow chat execution.

ruoyi-admin/src/main/resources/application-dev.yml

@@ -60,7 +60,7 @@ spring:
           # rewriteBatchedStatements=true 批处理优化 大幅提升批量插入更新删除性能(对数据库有性能损耗 使用批量操作应考虑性能问题)
           url: jdbc:mysql://127.0.0.1:3306/ruoyi-ai?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=true&serverTimezone=GMT%2B8&autoReconnect=true&rewriteBatchedStatements=true&allowPublicKeyRetrieval=true&nullCatalogMeansCurrent=true
           username: root
-          password: 123456
+          password: root
 #        agent:
 #          url: jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=true&serverTimezone=GMT%2B8&autoReconnect=true&rewriteBatchedStatements=true&allowPublicKeyRetrieval=true&nullCatalogMeansCurrent=true
 #          # url: jdbc:mysql://localhost:3306/agent_db

ruoyi-admin/src/main/resources/application.yml

@@ -332,6 +332,16 @@ vector-store:
     api-key:
     use-tls: false
 
+# 流程编排扩展节点
+workflow:
+  web-search:
+    zhipu:
+      # 推荐通过环境变量注入；为空时回退到模型管理中的 zhipu 厂商密钥
+      api-key: ${ZAI_API_KEY:}
+      base-url: ${ZHIPU_WEB_SEARCH_BASE_URL:https://open.bigmodel.cn/api/paas/v4/}
+      connect-timeout: ${ZHIPU_WEB_SEARCH_CONNECT_TIMEOUT:10}
+      read-timeout: ${ZHIPU_WEB_SEARCH_READ_TIMEOUT:30}
+
 # 短剧成片合成
 short-drama:
   composition: