refactor: simplify plugin branding

plugin-src/client/index.js

@@ -44,8 +44,6 @@ import { WorkspaceDirectoryPickerContext } from './workspace-editor.js';
 export const name = 'im-settings';
 export const inject = ['slots', 'connection', 'locale', 'workspaces'];
 
-const IM_PLUGIN_LOGO_URL = globalThis.__DSH_IM_LOGO_DATA_URL__ ?? 'assets/logo-plugin-phone.png';
-
 const CHANNELS = Object.freeze([
   { id: 'weixin', label: '微信' },
   { id: 'feishu', label: '飞书' },
@@ -132,13 +130,7 @@ export function IMSettingsTab({
     h('section', { className: 'dim-page', 'aria-label': 'IM机器人设置' },
     h('header', { className: 'dim-title' },
       h('div', { className: 'dim-brand' },
-        h('img', {
-          className: 'dim-brandLogo',
-          src: IM_PLUGIN_LOGO_URL,
-          alt: 'dsh-im',
-          width: 48,
-          height: 48,
-        }),
+        h('strong', { className: 'dim-brandName' }, 'DSH-IM'),
         h('p', null, '让 DeepSeek Harness 触手可及')),
       h('span', { className: 'dim-githubAction' },
         h('a', {