feat: Add self-use mode for model ratio and price configuration

- Introduce `SelfUseModeEnabled` setting to allow flexible model ratio configuration
- Update error handling to provide more informative messages when model ratios are not set
- Modify pricing and relay logic to support self-use mode
- Add UI toggle for enabling self-use mode in operation settings
- Implement fallback mechanism for model ratios when self-use mode is enabled

web/src/components/OperationSetting.js

@@ -60,6 +60,7 @@ const OperationSetting = () => {
     RetryTimes: 0,
     Chats: "[]",
     DemoSiteEnabled: false,
+    SelfUseModeEnabled: false,
     AutomaticDisableKeywords: '',
   });
 

web/src/pages/Setting/Operation/SettingsGeneral.js

@@ -22,6 +22,7 @@ export default function GeneralSettings(props) {
     DisplayTokenStatEnabled: false,
     DefaultCollapseSidebar: false,
     DemoSiteEnabled: false,
+    SelfUseModeEnabled: false,
   });
   const refForm = useRef();
   const [inputsRow, setInputsRow] = useState(inputs);
@@ -205,6 +206,22 @@ export default function GeneralSettings(props) {
                   }
                 />
               </Col>
+              <Col span={8}>
+                <Form.Switch
+                  field={'SelfUseModeEnabled'}
+                  label={t('自用模式')}
+                  extraText={t('开启后不限制：必须设置模型倍率')}
+                  size='default'
+                  checkedText='｜'
+                  uncheckedText='〇'
+                  onChange={(value) =>
+                    setInputs({
+                      ...inputs,
+                      SelfUseModeEnabled: value
+                    })
+                  }
+                />
+              </Col>
             </Row>
             <Row>
               <Button size='default' onClick={onSubmit}>