feat(proxy): add full URL mode and refactor endpoint rewriting (#1561)

* feat(proxy): add full URL mode and refactor endpoint rewriting

- Add `isFullUrl` provider meta to treat base_url as complete API endpoint
- Remove hardcoded `?beta=true` from Claude adapter, pass through from client
- Refactor forwarder endpoint rewriting with proper query string handling
- Block provider switching when proxy is required but not running
- Add full URL toggle UI in endpoint field with i18n (zh/en/ja)

* refactor(proxy): remove beta query handling

* fix(proxy): strip beta query when rewriting Claude endpoints

* feat(codex): complete full URL support

* refactor(ui): refine full URL endpoint hint

src/components/providers/forms/shared/EndpointField.tsx

@@ -1,7 +1,8 @@
 import { useTranslation } from "react-i18next";
 import { FormLabel } from "@/components/ui/form";
 import { Input } from "@/components/ui/input";
-import { Zap } from "lucide-react";
+import { Switch } from "@/components/ui/switch";
+import { Link2, Zap } from "lucide-react";
 
 interface EndpointFieldProps {
   id: string;
@@ -13,6 +14,9 @@ interface EndpointFieldProps {
   showManageButton?: boolean;
   onManageClick?: () => void;
   manageButtonLabel?: string;
+  showFullUrlToggle?: boolean;
+  isFullUrl?: boolean;
+  onFullUrlChange?: (value: boolean) => void;
 }
 
 export function EndpointField({
@@ -25,18 +29,56 @@ export function EndpointField({
   showManageButton = true,
   onManageClick,
   manageButtonLabel,
+  showFullUrlToggle = false,
+  isFullUrl = false,
+  onFullUrlChange,
 }: EndpointFieldProps) {
   const { t } = useTranslation();
 
   const defaultManageLabel = t("providerForm.manageAndTest", {
     defaultValue: "管理和测速",
   });
+  const effectiveHint =
+    showFullUrlToggle && isFullUrl
+      ? t("providerForm.fullUrlHint", {
+          defaultValue:
+            "💡 请填写完整请求 URL，并且必须开启代理后使用；代理将直接使用此 URL，不拼接路径",
+        })
+      : hint;
 
   return (
     <div className="space-y-2">
-      <div className="flex items-center justify-between">
-        <FormLabel htmlFor={id}>{label}</FormLabel>
-        {showManageButton && onManageClick && (
+      <div className="flex flex-wrap items-center justify-between gap-2">
+        <div className="flex flex-wrap items-center gap-3">
+          <FormLabel htmlFor={id}>{label}</FormLabel>
+          {showFullUrlToggle && onFullUrlChange ? (
+            <div className="flex items-center gap-2 rounded-full border border-border/70 bg-muted/30 px-2.5 py-1">
+              <Link2
+                className={`h-3.5 w-3.5 ${
+                  isFullUrl ? "text-primary" : "text-muted-foreground"
+                }`}
+              />
+              <span
+                className={`text-xs font-medium ${
+                  isFullUrl ? "text-foreground" : "text-muted-foreground"
+                }`}
+              >
+                {t("providerForm.fullUrlLabel", {
+                  defaultValue: "完整 URL",
+                })}
+              </span>
+              <Switch
+                checked={isFullUrl}
+                onCheckedChange={onFullUrlChange}
+                aria-label={t("providerForm.fullUrlLabel", {
+                  defaultValue: "完整 URL",
+                })}
+                className="h-5 w-9"
+              />
+            </div>
+          ) : null}
+        </div>
+        {showManageButton && onManageClick ? (
           <button
             type="button"
             onClick={onManageClick}
@@ -45,7 +87,7 @@ export function EndpointField({
             <Zap className="h-3.5 w-3.5" />
             {manageButtonLabel || defaultManageLabel}
           </button>
-        )}
+        ) : null}
       </div>
       <Input
         id={id}
@@ -55,9 +97,11 @@ export function EndpointField({
         placeholder={placeholder}
         autoComplete="off"
       />
-      {hint ? (
+      {effectiveHint ? (
         <div className="p-3 bg-amber-50 dark:bg-amber-900/20 border border-amber-200 dark:border-amber-700 rounded-lg">
-          <p className="text-xs text-amber-600 dark:text-amber-400">{hint}</p>
+          <p className="text-xs text-amber-600 dark:text-amber-400">
+            {effectiveHint}
+          </p>
         </div>
       ) : null}
     </div>