Inline plugin icon helper into PluginCard

Move getPluginIconUrl from utils/plugin_icon.ts into plugin_card.tsx and remove the now-unused util file. The function behavior is unchanged: it reads webui_token from localStorage and appends it as a query parameter to plugin icon URLs so authenticated icon endpoints can be used as img src.

packages/napcat-webui-frontend/src/components/display_card/plugin_card.tsx

@@ -11,7 +11,20 @@ import { useState } from 'react';
 
 import key from '@/const/key';
 import { PluginItem } from '@/controllers/plugin_manager';
-import { getPluginIconUrl } from '@/utils/plugin_icon';
+
+function getPluginIconUrl (iconPath?: string): string | undefined {
+  if (!iconPath) return undefined;
+  try {
+    const raw = localStorage.getItem(key.token);
+    if (!raw) return iconPath;
+    const token = JSON.parse(raw);
+    const url = new URL(iconPath, window.location.origin);
+    url.searchParams.set('webui_token', token);
+    return url.pathname + url.search;
+  } catch {
+    return iconPath;
+  }
+}
 
 export interface PluginDisplayCardProps {
   data: PluginItem;

packages/napcat-webui-frontend/src/utils/plugin_icon.ts

@@ -1,20 +0,0 @@
-import key from '@/const/key';
-
-/**
- * 将后端返回的插件 icon 路径拼接上 webui_token 查询参数
- * 后端 /api/Plugin/Icon/:pluginId 需要鉴权，img src 无法携带 Authorization header，
- * 所以通过 query 参数传递 token
- */
-export function getPluginIconUrl (iconPath?: string): string | undefined {
-  if (!iconPath) return undefined;
-  try {
-    const raw = localStorage.getItem(key.token);
-    if (!raw) return iconPath;
-    const token = JSON.parse(raw);
-    const url = new URL(iconPath, window.location.origin);
-    url.searchParams.set('webui_token', token);
-    return url.pathname + url.search;
-  } catch {
-    return iconPath;
-  }
-}