refactor: 重命名 agent_chat 模块为 agent

backend/tests/unit/core/agent_chat/test_agui_adapter.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import pytest
 
-from core.agent_chat.agui_adapter import AguiAdapter
+from core.agent.agui_adapter import AguiAdapter
 
 
 def test_to_command_maps_payload_fields() -> None:

backend/tests/unit/core/agent_chat/test_asr_fun_asr_tool.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import pytest
 
-from core.agent_chat.tools.asr_fun_asr import FunASRTool
+from core.agent.tools.asr_fun_asr import FunASRTool
 
 
 def test_transcribe_uses_injected_dashscope_callable() -> None:

backend/tests/unit/core/agent_chat/test_cost_tracker.py

@@ -4,7 +4,7 @@ from decimal import Decimal
 
 import pytest
 
-from core.agent_chat.cost_tracker import CostTracker
+from core.agent.cost_tracker import CostTracker
 
 
 def test_normalize_usage_and_cost_aggregation() -> None:

backend/tests/unit/core/agent_chat/test_event_bridge.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import pytest
 
-from core.agent_chat.event_bridge import map_internal_event
+from core.agent.event_bridge import map_internal_event
 
 
 def test_map_run_started_event() -> None:

backend/tests/unit/core/agent_chat/test_multimodal.py

@@ -2,9 +2,9 @@ from __future__ import annotations
 
 import pytest
 
-from core.agent_chat.multimodal import AttachmentInput, MultimodalProcessor
-from core.agent_chat.storage_adapter import StorageAdapter
-from core.agent_chat.tools.asr_fun_asr import FunASRTool
+from core.agent.multimodal import AttachmentInput, MultimodalProcessor
+from core.agent.storage_adapter import StorageAdapter
+from core.agent.tools.asr_fun_asr import FunASRTool
 
 
 def test_multimodal_processes_audio_and_builds_attachment_context() -> None:

backend/tests/unit/core/agent_chat/test_orchestrator_pipeline.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from core.agent_chat.orchestrator import AgentChatOrchestrator
+from core.agent.orchestrator import AgentChatOrchestrator
 
 
 async def _intent_stage(

backend/tests/unit/core/agent_chat/test_session_title_strategy.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from datetime import datetime
 
-from v1.agent_chat.service import build_session_title
+from v1.agent.service import build_session_title
 
 
 def test_build_session_title_truncates_first_message() -> None:

backend/tests/unit/core/agent_chat/test_storage_adapter.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from core.agent_chat.storage_adapter import StorageAdapter
+from core.agent.storage_adapter import StorageAdapter
 
 
 def test_build_object_path_uses_expected_pattern() -> None: