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(),
         )

backend/src/core/config/initial/init_data.py

@@ -28,7 +28,6 @@ class LlmFactorySeed(BaseModel):
 class LlmSeed(BaseModel):
     model_code: str
     factory_name: str
-    litellm_model: str
     pricing_tiers: list[dict[str, float | int]]
 
 

backend/src/core/config/settings.py

@@ -182,15 +182,8 @@ class LlmSettings(BaseModel):
     provider_keys: dict[str, str] = Field(default_factory=dict)
 
 
-class LiteLLMSettings(BaseModel):
-    host: str = "127.0.0.1"
-    port: int = 3875
-    api_key: str = "sk-local"
-
-    @computed_field
-    @property
-    def base_url(self) -> str:
-        return f"http://{self.host}:{self.port}/v1"
+class LlmPricingSettings(BaseModel):
+    pass
 
 
 class DatabaseSettings(BaseModel):
@@ -264,7 +257,7 @@ class Settings(BaseSettings):
     supabase: SupabaseSettings = Field()
     storage: StorageSettings = StorageSettings()
     llm: LlmSettings = LlmSettings()
-    litellm: LiteLLMSettings = LiteLLMSettings()
+    llm_pricing: LlmPricingSettings = LlmPricingSettings()
     agent_runtime: AgentRuntimeSettings = AgentRuntimeSettings()
     automation_scheduler: AutomationSchedulerSettings = AutomationSchedulerSettings()
     taskiq: TaskiqSettings = TaskiqSettings()

backend/src/core/config/static/database/llm_catalog.yaml

@@ -27,7 +27,6 @@ llms:
     # qwen3.5-flash (3 tiers: 128K, 256K, 1M)
     - model_code: qwen3.5-flash
       factory_name: dashscope
-      litellm_model: dashscope/qwen3.5-flash
       pricing_tiers:
           - max_prompt_tokens: 128000
             input_cost_per_token: 0.0000002
@@ -44,7 +43,6 @@ llms:
 
     - model_code: qwen3.5-35b-a3b
       factory_name: dashscope
-      litellm_model: dashscope/qwen3.5-35b-a3b
       pricing_tiers:
           - max_prompt_tokens: 128000
             input_cost_per_token: 0.0000004
@@ -55,7 +53,6 @@ llms:
 
     - model_code: deepseek-chat
       factory_name: deepseek
-      litellm_model: deepseek/deepseek-chat
       pricing_tiers:
           - max_prompt_tokens: 128000
             input_cost_per_token: 0.000002
@@ -64,7 +61,6 @@ llms:
 
     - model_code: qwen3.5-27b
       factory_name: dashscope
-      litellm_model: dashscope/qwen3.5-27b
       pricing_tiers:
           - max_prompt_tokens: 128000
             input_cost_per_token: 0.0000006

backend/src/services/litellm/__init__.py

@@ -1,5 +0,0 @@
-from __future__ import annotations
-
-from services.litellm.service import LiteLLMService
-
-__all__ = ["LiteLLMService"]

backend/src/services/llm_pricing/__init__.py

@@ -0,0 +1,5 @@
+from __future__ import annotations
+
+from services.llm_pricing.service import LlmPricingService
+
+__all__ = ["LlmPricingService"]

backend/src/services/llm_pricing/service.py

@@ -14,7 +14,7 @@ class PricingTier:
     cache_hit_cost_per_token: float
 
 
-class LiteLLMService:
+class LlmPricingService:
     _pricing_by_model: dict[str, tuple[PricingTier, ...]]
 
     def __init__(self) -> None:
@@ -28,7 +28,6 @@ class LiteLLMService:
             if not isinstance(model, dict):
                 continue
             model_code = str(model.get("model_code", "")).strip().lower()
-            litellm_model = str(model.get("litellm_model", "")).strip().lower()
             raw_tiers = model.get("pricing_tiers")
             if not isinstance(raw_tiers, list) or not raw_tiers:
                 continue
@@ -56,8 +55,6 @@ class LiteLLMService:
             )
             if model_code:
                 pricing_by_model[model_code] = ordered_tiers
-            if litellm_model:
-                pricing_by_model[litellm_model] = ordered_tiers
         return pricing_by_model
 
     def calculate_cost(