fix: resolve import migrations and test failures after segment 3 merge

- Migrate core.model_runtime -> dify_graph.model_runtime across 20+ files
- Migrate core.workflow.file -> dify_graph.file across 15+ files
- Migrate core.workflow.enums -> dify_graph.enums in service files
- Fix SandboxContext phantom import in dify_graph/context/__init__.py
- Fix core.app.workflow.node_factory -> core.workflow.node_factory
- Fix toast import paths (useToastContext from toast/context)
- Fix app-info.tsx import paths for relocated app-operations
- Fix 15 frontend test files for API changes, missing QueryClientProvider,
  i18n key renames, and component behavior changes

Made-with: Cursor

api/dify_graph/context/__init__.py

@@ -17,15 +17,12 @@ from dify_graph.context.execution_context import (
     register_context_capturer,
     reset_context_provider,
 )
-from dify_graph.context.models import SandboxContext
-
 __all__ = [
     "AppContext",
     "ContextProviderNotFoundError",
     "ExecutionContext",
     "IExecutionContext",
     "NullAppContext",
-    "SandboxContext",
     "capture_current_context",
     "read_context",
     "register_context",

api/dify_graph/nodes/agent/agent_node.py

@@ -517,7 +517,7 @@ class AgentNode(Node[AgentNodeData]):
         Fetch memory instance for saving node memory.
         This is a simplified version that doesn't require model_instance.
         """
-        from core.model_runtime.entities.model_entities import ModelType
+        from dify_graph.model_runtime.entities.model_entities import ModelType
 
         from core.model_manager import ModelManager
 

api/dify_graph/nodes/base/node.py

@@ -378,7 +378,7 @@ class Node(Generic[NodeDataT]):
         Nested nodes are nodes with parent_node_id == self._node_id.
         They are executed before the main node to extract values from list[PromptMessage].
         """
-        from core.app.workflow.node_factory import DifyNodeFactory
+        from core.workflow.node_factory import DifyNodeFactory
 
         extractor_configs = self._find_extractor_node_configs()
         logger.debug("[NestedNode] Found %d nested nodes for parent '%s'", len(extractor_configs), self._node_id)
@@ -689,7 +689,7 @@ class Node(Generic[NodeDataT]):
 
     @_dispatch.register
     def _(self, event: StreamChunkEvent) -> NodeRunStreamChunkEvent:
-        from core.workflow.graph_events import ChunkType
+        from dify_graph.graph_events import ChunkType
 
         return NodeRunStreamChunkEvent(
             id=self.execution_id,
@@ -711,7 +711,7 @@ class Node(Generic[NodeDataT]):
 
     @_dispatch.register
     def _(self, event: ToolCallChunkEvent) -> NodeRunStreamChunkEvent:
-        from core.workflow.graph_events import ChunkType
+        from dify_graph.graph_events import ChunkType
 
         return NodeRunStreamChunkEvent(
             id=self._node_execution_id,
@@ -726,8 +726,8 @@ class Node(Generic[NodeDataT]):
 
     @_dispatch.register
     def _(self, event: ToolResultChunkEvent) -> NodeRunStreamChunkEvent:
-        from core.workflow.entities import ToolResult, ToolResultStatus
-        from core.workflow.graph_events import ChunkType
+        from dify_graph.entities import ToolResult, ToolResultStatus
+        from dify_graph.graph_events import ChunkType
 
         tool_result = event.tool_result or ToolResult()
         status: ToolResultStatus = tool_result.status or ToolResultStatus.SUCCESS
@@ -748,7 +748,7 @@ class Node(Generic[NodeDataT]):
 
     @_dispatch.register
     def _(self, event: ThoughtChunkEvent) -> NodeRunStreamChunkEvent:
-        from core.workflow.graph_events import ChunkType
+        from dify_graph.graph_events import ChunkType
 
         return NodeRunStreamChunkEvent(
             id=self._node_execution_id,

api/dify_graph/nodes/llm/llm_utils.py

@@ -199,7 +199,7 @@ def _build_messages_from_trace(
     assistant_response: str,
     file_suffix: str = "",
 ) -> list[PromptMessage]:
-    from core.workflow.nodes.llm.entities import ModelTraceSegment, ToolTraceSegment
+    from dify_graph.nodes.llm.entities import ModelTraceSegment, ToolTraceSegment
 
     messages: list[PromptMessage] = []
     covered_text_len = 0
@@ -266,12 +266,12 @@ def _truncate_multimodal_content(message: PromptMessage) -> PromptMessage:
 
 
 def restore_multimodal_content_in_messages(messages: Sequence[PromptMessage]) -> list[PromptMessage]:
-    from core.workflow.file import file_manager
-
-    return [_restore_message_content(msg, file_manager) for msg in messages]
+    return [_restore_message_content(msg) for msg in messages]
 
 
-def _restore_message_content(message: PromptMessage, file_manager) -> PromptMessage:
+def _restore_message_content(message: PromptMessage) -> PromptMessage:
+    from dify_graph.file.file_manager import restore_multimodal_content
+
     content = message.content
     if content is None or isinstance(content, str):
         return message
@@ -279,7 +279,7 @@ def _restore_message_content(message: PromptMessage, file_manager) -> PromptMess
     restored_content: list[PromptMessageContentUnionTypes] = []
     for item in content:
         if isinstance(item, MultiModalPromptMessageContent):
-            restored_item = file_manager.restore_multimodal_content(item)
+            restored_item = restore_multimodal_content(item)
             restored_content.append(cast(PromptMessageContentUnionTypes, restored_item))
         else:
             restored_content.append(item)

api/dify_graph/nodes/llm/node.py

@@ -2201,7 +2201,7 @@ class LLMNode(Node[LLMNodeData]):
 
     def _extract_prompt_files(self, variable_pool: VariablePool) -> list[File]:
         """Extract files from prompt template variables."""
-        from core.workflow.variables import ArrayFileVariable, FileVariable
+        from dify_graph.variables import ArrayFileVariable, FileVariable
 
         files: list[File] = []
 

api/dify_graph/nodes/tool/tool_node.py

@@ -568,7 +568,7 @@ class ToolNode(Node[ToolNodeData]):
         :param parent_node_id: the parent node id to find nested nodes for
         :return: mapping of variable key to variable selector
         """
-        from core.workflow.nodes.node_mapping import NODE_TYPE_CLASSES_MAPPING
+        from dify_graph.nodes.node_mapping import NODE_TYPE_CLASSES_MAPPING
 
         result: dict[str, Sequence[str]] = {}
         nodes = graph_config.get("nodes", [])

api/dify_graph/variables/utils.py

@@ -3,7 +3,7 @@ from typing import Any
 
 import orjson
 
-from core.model_runtime.entities import PromptMessage
+from dify_graph.model_runtime.entities import PromptMessage
 
 from .segment_group import SegmentGroup
 from .segments import ArrayFileSegment, ArrayPromptMessageSegment, FileSegment, Segment