refactor(core): decouple actors and remove workflow templates (#67)

Removes the deprecated `workflow_template` concept entirely across both backend API routers, internal logic handling within the `supervisory_node` and `consciousness_node`, and front-end components. Enables `consciousness_node` to work autonomously.

Also refactors core package structure to enforce the "one python package, one Ray Actor" architectural rule. `GlobalWorkflowManager`, `WorkflowRunningEngine`, `PostgresDatabase`, and `WorkerCluster` have been moved to their own top-level decoupled package directories with properly exported `__init__.py` modules. Test suites have been relocated and import paths updated across the system.

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
Co-authored-by: zhaoxi826 <198742034+zhaoxi826@users.noreply.github.com>

pretor/plugin/tool_plugin/file_reader/file_reader.py

@@ -16,13 +16,16 @@ from pydantic_ai import RunContext
 from pretor.plugin.tool_plugin.base_tool import BaseToolData
 import os
 
+
 class FileReaderData(BaseToolData):
     """FileReaderData 核心组件类。
-    这是一个领域数据模型或功能封装类，承载了 FileReaderData 相关的内聚属性定义与状态维护。它的存在隔离了局部的业务复杂性，并对外提供了类型安全的访问接口。    """
+    这是一个领域数据模型或功能封装类，承载了 FileReaderData 相关的内聚属性定义与状态维护。它的存在隔离了局部的业务复杂性，并对外提供了类型安全的访问接口。"""
+
     is_system: bool = True
     name: str = "file_reader"
     description: str = "读取本地文件的内容"
 
+
 def file_reader(ctx: RunContext, filepath: str) -> str:
     """读取本地文件内容的工具。
 
@@ -38,7 +41,7 @@ def file_reader(ctx: RunContext, filepath: str) -> str:
         return f"Error: {filepath} 不是一个文件。"
 
     try:
-        with open(filepath, 'r', encoding='utf-8') as f:
+        with open(filepath, "r", encoding="utf-8") as f:
             content = f.read()
         return content
     except Exception as e: