refactor(api): refactor all

- Replaced direct imports of `TriggerProviderID` and `ToolProviderID` from `core.plugin.entities.plugin` with imports from `models.provider_ids` for better organization.
- Refactored workflow node classes to inherit from a unified `Node` class, improving consistency and maintainability.
- Removed unused code and comments to clean up the implementation, particularly in the `workflow_trigger.py` and `builtin_tools_manage_service.py` files.

These changes enhance the clarity and structure of the codebase, facilitating easier future modifications.

api/core/workflow/enums.py

@@ -62,6 +62,16 @@ class NodeType(StrEnum):
     TRIGGER_SCHEDULE = "trigger-schedule"
     TRIGGER_PLUGIN = "trigger-plugin"
 
+    @property
+    def is_start_node(self) -> bool:
+        """Check if this node type can serve as a workflow entry point."""
+        return self in [
+            NodeType.START,
+            NodeType.TRIGGER_WEBHOOK,
+            NodeType.TRIGGER_SCHEDULE,
+            NodeType.TRIGGER_PLUGIN,
+        ]
+
 
 class NodeExecutionType(StrEnum):
     """Node execution type classification."""

api/core/workflow/nodes/trigger_plugin/entities.py

@@ -2,8 +2,8 @@ from typing import Any, Optional
 
 from pydantic import Field
 
+from core.workflow.enums import ErrorStrategy
 from core.workflow.nodes.base.entities import BaseNodeData, RetryConfig
-from core.workflow.nodes.enums import ErrorStrategy
 
 
 class PluginTriggerData(BaseNodeData):

api/core/workflow/nodes/trigger_plugin/trigger_plugin_node.py

@@ -1,16 +1,16 @@
 from collections.abc import Mapping
 from typing import Any, Optional
 
-from core.workflow.entities.node_entities import NodeRunResult
 from core.workflow.entities.workflow_node_execution import WorkflowNodeExecutionMetadataKey, WorkflowNodeExecutionStatus
-from core.workflow.nodes.base import BaseNode
+from core.workflow.enums import ErrorStrategy, NodeType
+from core.workflow.node_events import NodeRunResult
 from core.workflow.nodes.base.entities import BaseNodeData, RetryConfig
-from core.workflow.nodes.enums import ErrorStrategy, NodeType
+from core.workflow.nodes.base.node import Node
 
 from .entities import PluginTriggerData
 
 
-class TriggerPluginNode(BaseNode):
+class TriggerPluginNode(Node):
     _node_type = NodeType.TRIGGER_PLUGIN
 
     _node_data: PluginTriggerData

api/core/workflow/nodes/trigger_schedule/trigger_schedule_node.py

@@ -2,15 +2,15 @@ from collections.abc import Mapping
 from datetime import UTC, datetime
 from typing import Any, Optional
 
-from core.workflow.entities.node_entities import NodeRunResult
 from core.workflow.entities.workflow_node_execution import WorkflowNodeExecutionStatus
-from core.workflow.nodes.base import BaseNode
+from core.workflow.enums import ErrorStrategy, NodeType
+from core.workflow.node_events import NodeRunResult
 from core.workflow.nodes.base.entities import BaseNodeData, RetryConfig
-from core.workflow.nodes.enums import ErrorStrategy, NodeType
+from core.workflow.nodes.base.node import Node
 from core.workflow.nodes.trigger_schedule.entities import TriggerScheduleNodeData
 
 
-class TriggerScheduleNode(BaseNode):
+class TriggerScheduleNode(Node):
     _node_type = NodeType.TRIGGER_SCHEDULE
 
     _node_data: TriggerScheduleNodeData

api/core/workflow/nodes/trigger_webhook/node.py

@@ -1,16 +1,16 @@
 from collections.abc import Mapping
 from typing import Any, Optional
 
-from core.workflow.entities.node_entities import NodeRunResult
 from core.workflow.entities.workflow_node_execution import WorkflowNodeExecutionStatus
-from core.workflow.nodes.base import BaseNode
+from core.workflow.enums import ErrorStrategy, NodeType
+from core.workflow.node_events import NodeRunResult
 from core.workflow.nodes.base.entities import BaseNodeData, RetryConfig
-from core.workflow.nodes.enums import ErrorStrategy, NodeType
+from core.workflow.nodes.base.node import Node
 
 from .entities import ContentType, WebhookData
 
 
-class TriggerWebhookNode(BaseNode):
+class TriggerWebhookNode(Node):
     _node_type = NodeType.TRIGGER_WEBHOOK
 
     _node_data: WebhookData