feat(provider): 新增 keep_priority_on_conversion 字段，支持格式转换时保持调度优先级

frontend/src/api/endpoints/providers.ts

@@ -39,6 +39,7 @@ export async function updateProvider(
     description: string | null
     website: string
     provider_priority: number
+    keep_priority_on_conversion: boolean
     billing_type: 'monthly_quota' | 'pay_as_you_go' | 'free_tier'
     monthly_quota_usd: number
     quota_reset_day: number

src/api/admin/providers/routes.py

@@ -470,6 +470,7 @@ class AdminCreateProviderAdapter(AdminApiAdapter):
                 quota_last_reset_at=validated_data.quota_last_reset_at,
                 quota_expires_at=validated_data.quota_expires_at,
                 provider_priority=validated_data.provider_priority,
+                keep_priority_on_conversion=validated_data.keep_priority_on_conversion,
                 is_active=validated_data.is_active,
                 concurrent_limit=validated_data.concurrent_limit,
                 max_retries=validated_data.max_retries,

src/models/admin_requests.py

@@ -396,6 +396,10 @@ class CreateProviderRequest(BaseModel):
     provider_priority: int | None = Field(
         100, ge=0, le=10000, description="提供商优先级（数字越小越优先）"
     )
+    keep_priority_on_conversion: bool = Field(
+        False,
+        description="格式转换时是否保持优先级（True=保持原优先级，False=需要转换时降级）",
+    )
     is_active: bool | None = Field(True, description="是否启用")
     concurrent_limit: int | None = Field(None, ge=0, description="并发限制")
     # 请求配置（从 Endpoint 迁移）
@@ -506,6 +510,10 @@ class UpdateProviderRequest(BaseModel):
     quota_last_reset_at: datetime | None = None
     quota_expires_at: datetime | None = None
     provider_priority: int | None = Field(None, ge=0, le=10000)
+    keep_priority_on_conversion: bool | None = Field(
+        None,
+        description="格式转换时是否保持优先级（True=保持原优先级，False=需要转换时降级）",
+    )
     is_active: bool | None = None
     concurrent_limit: int | None = Field(None, ge=0)
     # 请求配置（从 Endpoint 迁移）

tests/unit/test_provider_request_keep_priority.py

@@ -0,0 +1,14 @@
+from src.models.admin_requests import CreateProviderRequest, UpdateProviderRequest
+
+
+def test_create_provider_request_accepts_keep_priority_on_conversion() -> None:
+    req = CreateProviderRequest.model_validate(
+        {"name": "Provider Keep Priority", "keep_priority_on_conversion": True}
+    )
+    assert req.keep_priority_on_conversion is True
+
+
+def test_update_provider_request_preserves_keep_priority_on_conversion() -> None:
+    req = UpdateProviderRequest.model_validate({"keep_priority_on_conversion": True})
+    data = req.model_dump(exclude_unset=True)
+    assert data["keep_priority_on_conversion"] is True