refactor: 清理 litellm 冗余代码并锁定依赖版本

backend/src/core/agentscope/runtime/runner.py

@@ -47,7 +47,7 @@ from schemas.agent.system_agent import (
 from schemas.domain.automation import RuntimeConfig
 from schemas.domain.memory_content import UserMemoryContent, WorkProfileContent
 from schemas.shared.user import UserContext
-from services.litellm.service import LiteLLMService
+from services.llm_pricing.service import LlmPricingService
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
@@ -63,9 +63,11 @@ class StageExecutionResult:
 
 
 class AgentScopeRunner:
-    def __init__(self, *, litellm_service: LiteLLMService | None = None) -> None:
+    def __init__(self, *, llm_pricing_service: LlmPricingService | None = None) -> None:
         patch_agentscope_json_repair_compat()
-        self._litellm_service: LiteLLMService = litellm_service or LiteLLMService()
+        self._llm_pricing_service: LlmPricingService = (
+            llm_pricing_service or LlmPricingService()
+        )
         self._active_agent: JsonReActAgent | None = None
         self._active_agent_lock = asyncio.Lock()
 
@@ -355,7 +357,7 @@ class AgentScopeRunner:
         return StageExecutionResult(
             message=response_msg,
             payload=payload,
-            response_metadata=self._litellm_service.build_usage_metadata(
+            response_metadata=self._llm_pricing_service.build_usage_metadata(
                 model=stage_config.model_code,
                 usage_summary=tracking_model.usage_summary(),
             ),
@@ -436,7 +438,7 @@ class AgentScopeRunner:
                 if self._active_agent is agent:
                     self._active_agent = None
         worker_payload = worker_output_model.model_validate(response_msg.metadata or {})
-        response_metadata = self._litellm_service.build_usage_metadata(
+        response_metadata = self._llm_pricing_service.build_usage_metadata(
             model=stage_config.model_code,
             usage_summary=tracking_model.usage_summary(),
         )