add: workers/ 进程插件目录 + demo 示例（external 模式经 Zenoh 注册路由）

workers/demo/models/__init__.py

@@ -0,0 +1,14 @@
+"""
+模型导出 — demo
+自动生成，请勿手动修改
+"""
+
+from .pydantic import DemoResponse
+from .pydantic import HelloGetRequest
+from .pydantic import HelloGetResponse
+
+__all__ = [
+    "DemoResponse",
+    "HelloGetRequest",
+    "HelloGetResponse",
+]

workers/demo/models/pydantic.py

@@ -0,0 +1,23 @@
+"""
+自动生成的 Pydantic 模型 — demo
+来源: config/workers/demo/
+"""
+
+from __future__ import annotations
+
+from typing import Optional
+from pydantic import BaseModel, Field
+
+class HelloGetRequest(BaseModel):
+    """进程插件示例：问候 — 请求体"""
+    name: str = Field(...)
+
+class HelloGetResponse(BaseModel):
+    """进程插件示例：问候 — 响应体"""
+    greeting: str = Field(...)
+    worker_id: Optional[str] = Field(default='')
+    timestamp: float = Field(...)
+
+
+# 所有响应模型的联合类型
+DemoResponse = HelloGetResponse