feat: v0.2.4 — 搜索面板全面重设计 + 完整安装文档

### Changed
- 搜索面板：暗色玻璃拟态设计，SVG 图标，流畅动画，改进间距和焦点状态
- README / site：补全 npm / CDN / ESM / CJS / 浏览器五种安装方式

### Fixed
- CI 卡死：移除 setInterval，改用纯事件驱动
- 浮动工具栏定位修正
- 浮动工具栏开关按钮修复

site/index.html

@@ -4,7 +4,7 @@
 <meta charset="UTF-8"/>
 <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
 <link rel="icon" href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'><text y='.9em' font-size='90'>🚀</text></svg>"/>
-<title>MetonaEditor v0.2.3 · TypeScript · 桌面端 Markdown 编辑器</title>
+<title>MetonaEditor v0.2.4 · TypeScript · 桌面端 Markdown 编辑器</title>
 <style>
 *{box-sizing:border-box;margin:0;padding:0}
 :root{--bg:#0f1117;--bg-soft:#161922;--card:#1c2029;--card-hover:#232834;--text:#e6e8eb;--muted:#9ca3af;--accent:#3b82f6;--accent-2:#8b5cf6;--accent-3:#ec4899;--accent-soft:rgba(59,130,246,.12);--border:rgba(255,255,255,.08);--gradient:linear-gradient(135deg,#3b82f6 0%,#8b5cf6 50%,#ec4899 100%);--shadow:0 20px 50px -20px rgba(0,0,0,.5)}
@@ -106,7 +106,7 @@ footer a:hover{text-decoration:underline}
   <h1>TypeScript 重构 · 零依赖<br/><span class="grad">桌面端 Markdown 编辑器</span></h1>
   <p class="tagline">全模块 TypeScript 严格模式，内置自研解析器（99% 行覆盖率），6 个预设插件，中文优先。为桌面端现代 Web 应用而生。</p>
   <div class="badges">
-    <span class="badge accent">v0.2.3</span>
+    <span class="badge accent">v0.2.4</span>
     <span class="badge">TypeScript</span>
     <span class="badge">零运行时依赖</span>
     <span class="badge">725 tests</span>
@@ -154,10 +154,23 @@ footer a:hover{text-decoration:underline}
   <div class="container">
     <span class="section-eyebrow">Quick Start</span>
     <h2 class="section-title">三行代码即可使用</h2>
-    <p class="section-sub">TypeScript / npm / CDN 三种引入方式，都只需极少代码。</p>
-    <div class="code-block"><span class="c-com">// npm 安装</span>
+    <p class="section-sub">npm / CDN / 本地文件 三种方式，TypeScript / ESM / CJS 全面支持。</p>
+    <div class="code-block"><span class="c-com">// 方式一：npm 安装（推荐）</span>
+<span class="c-kw">npm</span> install @metona-team/metona-editor
+
+<span class="c-com">// ES Module / TypeScript</span>
 <span class="c-kw">import</span> MeEditor <span class="c-kw">from</span> <span class="c-str">'@metona-team/metona-editor'</span><span class="c-punc">;</span>
 
+<span class="c-com">// CommonJS</span>
+<span class="c-kw">const</span> MeEditor <span class="c-punc">=</span> <span class="c-fn">require</span><span class="c-punc">(</span><span class="c-str">'@metona-team/metona-editor'</span><span class="c-punc">);</span>
+
+<span class="c-com">// 方式二：CDN 引入</span>
+<span class="c-com">&lt;script src="https://cdn.jsdelivr.net/npm/@metona-team/metona-editor@0.2.4/dist/metona-editor.min.js"&gt;&lt;/script&gt;</span>
+
+<span class="c-com">// 方式三：本地文件</span>
+<span class="c-com">&lt;script src="./dist/metona-editor.min.js"&gt;&lt;/script&gt;</span>
+
+<span class="c-com">// 创建实例</span>
 <span class="c-kw">const</span> editor <span class="c-punc">=</span> MeEditor<span class="c-punc">.</span><span class="c-fn">create</span><span class="c-punc">(</span><span class="c-str">'#editor'</span><span class="c-punc">,</span> <span class="c-punc">{</span>
   <span class="c-fn">value</span><span class="c-punc">:</span> <span class="c-str">'# 你好，世界'</span><span class="c-punc">,</span>
   <span class="c-fn">mode</span><span class="c-punc">:</span> <span class="c-str">'split'</span><span class="c-punc">,</span>
@@ -214,7 +227,7 @@ editor<span class="c-punc">.</span><span class="c-fn">exec</span><span class="c-
       <a href="https://git.metona.cn/MetonaTeam/MetonaEditor" target="_blank" rel="noopener">源码仓库</a>
       <a href="https://git.metona.cn/MetonaTeam/MetonaEditor/issues" target="_blank" rel="noopener">问题反馈</a>
     </div>
-    <div>MetonaEditor v0.2.3 · TypeScript · MIT License · MetonaTeam</div>
+    <div>MetonaEditor v0.2.4 · TypeScript · MIT License · MetonaTeam</div>
   </div>
 </footer>
 
@@ -224,7 +237,7 @@ MeEditor.themes.switchTheme('dark');
 MeEditor.create('#editor', {
   mode: 'split', height: 480, theme: 'dark',
   value: [
-    '# 欢迎使用 MetonaEditor v0.2.3',
+    '# 欢迎使用 MetonaEditor v0.2.4',
     '',
     '一个 **TypeScript 重构 · 零运行时依赖** 的桌面端 Markdown 编辑器。',
     '',