feat(proxy): align thinking rectifiers and resolve clippy warnings

- add thinking budget rectifier flow with single retry on anthropic budget errors

- align thinking signature rectification behavior with adaptive-safe handling

- expose requestThinkingBudget in settings/ui/i18n and default rectifier config to disabled

- fix clippy warnings in model_mapper format args and RectifierConfig default derive

src/components/settings/RectifierConfigPanel.tsx

@@ -8,8 +8,9 @@ import { settingsApi, type RectifierConfig } from "@/lib/api/settings";
 export function RectifierConfigPanel() {
   const { t } = useTranslation();
   const [config, setConfig] = useState<RectifierConfig>({
-    enabled: true,
-    requestThinkingSignature: true,
+    enabled: false,
+    requestThinkingSignature: false,
+    requestThinkingBudget: false,
   });
   const [isLoading, setIsLoading] = useState(true);
 
@@ -69,6 +70,21 @@ export function RectifierConfigPanel() {
             }
           />
         </div>
+        <div className="flex items-center justify-between pl-4">
+          <div className="space-y-0.5">
+            <Label>{t("settings.advanced.rectifier.thinkingBudget")}</Label>
+            <p className="text-xs text-muted-foreground">
+              {t("settings.advanced.rectifier.thinkingBudgetDescription")}
+            </p>
+          </div>
+          <Switch
+            checked={config.requestThinkingBudget}
+            disabled={!config.enabled}
+            onCheckedChange={(checked) =>
+              handleChange({ requestThinkingBudget: checked })
+            }
+          />
+        </div>
       </div>
     </div>
   );