feat(providers): add notes field for provider management

- Add notes field to Provider model (backend and frontend)
- Display notes with higher priority than URL in provider card
- Style notes as non-clickable text to differentiate from URLs
- Add notes input field in provider form
- Add i18n support (zh/en) for notes field

src/components/providers/ProviderCard.tsx

@@ -33,10 +33,17 @@ interface ProviderCardProps {
 }
 
 const extractApiUrl = (provider: Provider, fallbackText: string) => {
+  // 优先级 1: 备注
+  if (provider.notes?.trim()) {
+    return provider.notes.trim();
+  }
+
+  // 优先级 2: 官网地址
   if (provider.websiteUrl) {
     return provider.websiteUrl;
   }
 
+  // 优先级 3: 从配置中提取请求地址
   const config = provider.settingsConfig;
 
   if (config && typeof config === "object") {
@@ -83,10 +90,24 @@ export function ProviderCard({
     return extractApiUrl(provider, fallbackUrlText);
   }, [provider, fallbackUrlText]);
 
+  // 判断是否为可点击的 URL（备注不可点击）
+  const isClickableUrl = useMemo(() => {
+    // 如果有备注，则不可点击
+    if (provider.notes?.trim()) {
+      return false;
+    }
+    // 如果显示的是回退文本，也不可点击
+    if (displayUrl === fallbackUrlText) {
+      return false;
+    }
+    // 其他情况（官网地址或请求地址）可点击
+    return true;
+  }, [provider.notes, displayUrl, fallbackUrlText]);
+
   const usageEnabled = provider.meta?.usage_script?.enabled ?? false;
 
   const handleOpenWebsite = () => {
-    if (!displayUrl || displayUrl === fallbackUrlText) {
+    if (!isClickableUrl) {
       return;
     }
     onOpenWebsite(displayUrl);
@@ -174,8 +195,14 @@ export function ProviderCard({
               <button
                 type="button"
                 onClick={handleOpenWebsite}
-                className="inline-flex items-center text-sm text-blue-500 transition-colors hover:underline dark:text-blue-400 max-w-[280px]"
+                className={cn(
+                  "inline-flex items-center text-sm max-w-[280px]",
+                  isClickableUrl
+                    ? "text-blue-500 transition-colors hover:underline dark:text-blue-400 cursor-pointer"
+                    : "text-muted-foreground cursor-default",
+                )}
                 title={displayUrl}
+                disabled={!isClickableUrl}
               >
                 <span className="truncate">{displayUrl}</span>
               </button>

src/components/providers/forms/BasicFormFields.tsx

@@ -46,6 +46,20 @@ export function BasicFormFields({ form }: BasicFormFieldsProps) {
           </FormItem>
         )}
       />
+
+      <FormField
+        control={form.control}
+        name="notes"
+        render={({ field }) => (
+          <FormItem>
+            <FormLabel>{t("provider.notes")}</FormLabel>
+            <FormControl>
+              <Input {...field} placeholder={t("provider.notesPlaceholder")} />
+            </FormControl>
+            <FormMessage />
+          </FormItem>
+        )}
+      />
     </>
   );
 }

src/components/providers/forms/ProviderForm.tsx

@@ -74,6 +74,7 @@ interface ProviderFormProps {
   initialData?: {
     name?: string;
     websiteUrl?: string;
+    notes?: string;
     settingsConfig?: Record<string, unknown>;
     category?: ProviderCategory;
     meta?: ProviderMeta;
@@ -138,6 +139,7 @@ export function ProviderForm({
     () => ({
       name: initialData?.name ?? "",
       websiteUrl: initialData?.websiteUrl ?? "",
+      notes: initialData?.notes ?? "",
       settingsConfig: initialData?.settingsConfig
         ? JSON.stringify(initialData.settingsConfig, null, 2)
         : appId === "codex"