feat(workflow): 重构工作流模块并迁移到module_task目录

- 将工作流相关模块从module_application迁移到module_task目录
- 新增节点类型模型、服务和API接口
- 添加动态节点组件和节点操作工具函数
- 更新前端工作流编辑器支持动态节点配置
- 移除旧的module_application工作流相关文件
- 升级element-plus到2.11.0版本
- 优化性能工具函数(防抖和节流)
- 清理不再使用的依赖项(langchain-anthropic和langchain-mcp-adapters)

backend/app/plugin/module_task/node/model.py

@@ -0,0 +1,39 @@
+import enum
+
+from sqlalchemy import JSON, String
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.core.base_model import ModelMixin, UserMixin
+
+
+class NodeCategoryEnum(enum.Enum):
+    """节点分类枚举"""
+
+    TRIGGER = "trigger"
+    ACTION = "action"
+    CONDITION = "condition"
+    CONTROL = "control"
+    INTEGRATION = "integration"
+    CUSTOM = "custom"
+
+
+class NodeModel(ModelMixin, UserMixin):
+    """
+    节点类型模型 - 动态定义节点类型
+    """
+
+    __tablename__: str = "task_node"
+    __table_args__: dict[str, str] = {"comment": "节点类型表"}
+    __loader_options__: list[str] = ["created_by", "updated_by"]
+
+    name: Mapped[str] = mapped_column(String(64), nullable=False, unique=True, comment="节点类型名称")
+    code: Mapped[str] = mapped_column(String(32), nullable=False, unique=True, comment="节点类型编码")
+    category: Mapped[str] = mapped_column(
+        String(32), default=NodeCategoryEnum.ACTION.value, comment="节点分类"
+    )
+    config_schema: Mapped[dict] = mapped_column(JSON, nullable=False, comment="配置表单Schema(JSON Schema)")
+    input_schema: Mapped[dict | None] = mapped_column(JSON, nullable=True, comment="输入数据Schema")
+    output_schema: Mapped[dict | None] = mapped_column(JSON, nullable=True, comment="输出数据Schema")
+    handler: Mapped[str] = mapped_column(String(256), nullable=False, comment="处理器路径")
+    description: Mapped[str | None] = mapped_column(String(512), nullable=True, comment="描述")
+    meta_data: Mapped[dict | None] = mapped_column(JSON, nullable=True, comment="元数据")