refactor(api): set default value for EasyUIBasedAppGenerateEntity.query

Change type hint from 'str | None = None' to 'str = ""' to better
reflect actual usage throughout the codebase and improve type safety.

Fixes #27711

api/core/app/apps/agent_chat/app_runner.py

@@ -144,7 +144,7 @@ class AgentChatAppRunner(AppRunner):
             prompt_template_entity=app_config.prompt_template,
             inputs=dict(inputs),
             files=list(files),
-            query=query or "",
+            query=query,
             memory=memory,
         )
 
@@ -172,7 +172,7 @@ class AgentChatAppRunner(AppRunner):
             prompt_template_entity=app_config.prompt_template,
             inputs=dict(inputs),
             files=list(files),
-            query=query or "",
+            query=query,
             memory=memory,
         )
 

api/core/app/apps/base_app_runner.py

@@ -79,7 +79,7 @@ class AppRunner:
         prompt_template_entity: PromptTemplateEntity,
         inputs: Mapping[str, str],
         files: Sequence["File"],
-        query: str | None = None,
+        query: str = "",
         context: str | None = None,
         memory: TokenBufferMemory | None = None,
         image_detail_config: ImagePromptMessageContent.DETAIL | None = None,
@@ -105,7 +105,7 @@ class AppRunner:
                 app_mode=AppMode.value_of(app_record.mode),
                 prompt_template_entity=prompt_template_entity,
                 inputs=inputs,
-                query=query or "",
+                query=query,
                 files=files,
                 context=context,
                 memory=memory,

api/core/app/apps/message_based_app_generator.py

@@ -190,7 +190,7 @@ class MessageBasedAppGenerator(BaseAppGenerator):
             override_model_configs=json.dumps(override_model_configs) if override_model_configs else None,
             conversation_id=conversation.id,
             inputs=application_generate_entity.inputs,
-            query=application_generate_entity.query or "",
+            query=application_generate_entity.query,
             message="",
             message_tokens=0,
             message_unit_price=0,

api/core/app/entities/app_invoke_entities.py

@@ -129,7 +129,7 @@ class EasyUIBasedAppGenerateEntity(AppGenerateEntity):
     app_config: EasyUIBasedAppConfig = None  # type: ignore
     model_conf: ModelConfigWithCredentialsEntity
 
-    query: str | None = None
+    query: str = ""
 
     # pydantic configs
     model_config = ConfigDict(protected_namespaces=())

api/core/app/task_pipeline/easy_ui_based_generate_task_pipeline.py

@@ -121,7 +121,7 @@ class EasyUIBasedGenerateTaskPipeline(BasedGenerateTaskPipeline):
         if self._application_generate_entity.app_config.app_mode != AppMode.COMPLETION:
             # start generate conversation name thread
             self._conversation_name_generate_thread = self._message_cycle_manager.generate_conversation_name(
-                conversation_id=self._conversation_id, query=self._application_generate_entity.query or ""
+                conversation_id=self._conversation_id, query=self._application_generate_entity.query
             )
 
         generator = self._wrapper_process_stream_response(trace_manager=self._application_generate_entity.trace_manager)