Move engine module files to workflow directory

Co-authored-by: johndoe6345789 <224850594+johndoe6345789@users.noreply.github.com>

backend/autometabuilder/app_runner.py

@@ -3,7 +3,7 @@ import argparse
 import logging
 import os
 from dotenv import load_dotenv
-from .engine import load_workflow_config, build_workflow_context, build_workflow_engine
+from .workflow import load_workflow_config, build_workflow_context, build_workflow_engine
 
 TRACE_LEVEL = 5
 

backend/autometabuilder/engine/__init__.py

@@ -1,18 +0,0 @@
-"""
-Workflow engine initialization and building.
-
-This module contains the workflow engine setup components:
-- workflow_config_loader: Load workflow configuration JSON
-- workflow_context_builder: Build workflow runtime context
-- workflow_engine_builder: Assemble workflow engine with dependencies
-"""
-
-from .workflow_config_loader import load_workflow_config
-from .workflow_context_builder import build_workflow_context
-from .workflow_engine_builder import build_workflow_engine
-
-__all__ = [
-    "load_workflow_config",
-    "build_workflow_context",
-    "build_workflow_engine",
-]

backend/autometabuilder/workflow/__init__.py

@@ -28,5 +28,19 @@ Utilities:
     value_helpers.py - Value type checking and conversion helpers
     tool_runner.py - Tool execution wrapper
     tool_calls_handler.py - AI tool calls processing
+
+Workflow Engine Building:
+    workflow_config_loader.py - Load workflow configuration JSON
+    workflow_context_builder.py - Build workflow runtime context
+    workflow_engine_builder.py - Assemble workflow engine with dependencies
 """
 
+from .workflow_config_loader import load_workflow_config
+from .workflow_context_builder import build_workflow_context
+from .workflow_engine_builder import build_workflow_engine
+
+__all__ = [
+    "load_workflow_config",
+    "build_workflow_context",
+    "build_workflow_engine",
+]

backend/autometabuilder/workflow/workflow_engine_builder.py

@@ -1,11 +1,11 @@
 """Build workflow engine with dependencies."""
-from ..workflow.engine import WorkflowEngine
-from ..workflow.input_resolver import InputResolver
-from ..workflow.loop_executor import LoopExecutor
-from ..workflow.node_executor import NodeExecutor
-from ..workflow.plugin_registry import PluginRegistry, load_plugin_map
-from ..workflow.runtime import WorkflowRuntime
-from ..workflow.tool_runner import ToolRunner
+from .engine import WorkflowEngine
+from .input_resolver import InputResolver
+from .loop_executor import LoopExecutor
+from .node_executor import NodeExecutor
+from .plugin_registry import PluginRegistry, load_plugin_map
+from .runtime import WorkflowRuntime
+from .tool_runner import ToolRunner
 
 
 def build_workflow_engine(workflow_config: dict, context: dict, logger):