refactor: move workflow package to dify_graph (#32844)

api/dify_graph/nodes/question_classifier/entities.py

@@ -0,0 +1,28 @@
+from pydantic import BaseModel, Field
+
+from core.prompt.entities.advanced_prompt_entities import MemoryConfig
+from dify_graph.nodes.base import BaseNodeData
+from dify_graph.nodes.llm import ModelConfig, VisionConfig
+
+
+class ClassConfig(BaseModel):
+    id: str
+    name: str
+
+
+class QuestionClassifierNodeData(BaseNodeData):
+    query_variable_selector: list[str]
+    model: ModelConfig
+    classes: list[ClassConfig]
+    instruction: str | None = None
+    memory: MemoryConfig | None = None
+    vision: VisionConfig = Field(default_factory=VisionConfig)
+
+    @property
+    def structured_output_enabled(self) -> bool:
+        # NOTE(QuantumGhost): Temporary workaround for issue #20725
+        # (https://github.com/langgenius/dify/issues/20725).
+        #
+        # The proper fix would be to make `QuestionClassifierNode` inherit
+        # from `BaseNode` instead of `LLMNode`.
+        return False