upgrade: adopt V8.32.0-dev.1 (theme preview iframe fix, editor simple mode)

Overlay 46 upstream items; full patch set re-applied (all patched files
reset by overlay regardless of upstream change status — lesson recorded).
Verified: theme suites 35/35; dual-baseline 418 passed vs pristine
389+29 ours, FAILED-set diff EMPTY (same 10 Windows env fails).
Live: container 8.32.0-dev.1 healthy, hesupipe 192 entries intact,
trade-pro build 203 pages 0 errors.

Co-Authored-By: Claude Code <noreply@anthropic.com>

app/templates/editor.html

@@ -4,7 +4,7 @@
   <header class="studio-top sf-easy-top">
     <div class="brand"><a href="/" title="返回网站管理">◈</a><div><b>SiteForge</b><small>页面编辑</small></div></div>
     <div class="file-name sf-easy-file"><small id="siteName">加载中</small><strong id="pageName">页面编辑器</strong></div>
-    <button type="button" id="studioThemePreviewButton" class="ui-btn ghost sf-theme-preview-entry" onclick="Studio.showThemePreview()" title="不影响当前网站，先比较四套主题">◫ 主题效果</button>
+    <button type="button" id="studioThemePreviewButton" class="ui-btn ghost sf-theme-preview-entry" onclick="Studio.showThemePreview()" title="不影响当前网站，先比较四套主题">主题预览</button>
     <div class="sf-pane-controls"><button type="button" onclick="Studio.togglePane('left')">☰ 内容</button><button type="button" onclick="Studio.togglePane('right')">⚙ 编辑</button></div>
     <div class="top-center sf-easy-device" role="group" aria-label="预览设备">
       <button id="deviceDesktop" class="icon-btn on" onclick="Studio.device('desktop')" title="电脑预览" aria-label="电脑预览">电脑</button>
@@ -26,7 +26,7 @@
       <button class="ui-btn ghost" onclick="Studio.discardDraft()">放弃草稿</button>
     </div></details>
   </header>
-  <div class="sf-steps" aria-label="编辑操作指引"><div class="sf-steps-label">只需 3 步</div><span class="sf-step" id="sfStep1">① 点击页面中的内容</span><span class="sf-step-separator">→</span><span class="sf-step" id="sfStep2">② 直接编辑或调整布局</span><span class="sf-step-separator">→</span><span class="sf-step" id="sfStep3">③ 保存并发布</span><button type="button" class="sf-guide-link" onclick="Studio.showHelp()">新手使用指南 ?</button></div>
+  <div class="sf-steps" aria-label="编辑操作指引"><div class="sf-steps-label">只需 3 步</div><span class="sf-step" id="sfStep1">① 点击页面中的内容</span><span class="sf-step-separator">→</span><span class="sf-step" id="sfStep2">② 直接编辑或调整布局</span><span class="sf-step-separator">→</span><span class="sf-step" id="sfStep3">③ 保存并发布</span><span id="sfNextAction" class="sf-next-action" role="status" aria-live="polite">点击左侧区块或画布内容开始编辑</span><button type="button" class="sf-guide-link" onclick="Studio.showHelp()">使用帮助</button></div>
   <div class="studio-body">
     <aside class="left-pane" aria-label="页面内容和区块">
       <div class="pane-heading"><div><span class="overline">页面内容</span><h3>编辑页面</h3></div><span class="chip" id="blockCount">0 个区块</span></div>
@@ -47,8 +47,8 @@
     </aside>
     <section class="preview-workspace"><div class="preview-head"><span class="live-dot" id="previewDot"></span><span id="previewState" role="status" aria-live="polite">实时预览</span><code id="routeDisplay">/</code><span class="preview-note">单击区块或列内组件即可编辑 · 拖动 ⠿ 可排序 · 拖动列间分隔线可调宽</span></div><div class="stage"><div class="device-frame" id="deviceFrame"><iframe id="sitePreview" title="页面预览" sandbox="allow-scripts" referrerpolicy="no-referrer"></iframe></div></div>
       <div class="stage-footer"><span id="deviceDetails">桌面端 · 自适应宽度</span><span>当前是草稿预览，不是线上网站</span></div></section>
-    <aside class="right-pane"><div class="pane-heading"><div><span class="overline">步骤 2 · 修改内容</span><h3>编辑选中的区块</h3></div><span class="chip" id="blockTypeLabel">页面</span></div>
-      <div class="inspector-nav" role="tablist" aria-label="属性编辑分类"><button type="button" role="tab" id="tabContent" aria-selected="true" onclick="Studio.changeInspectorTab('content')">内容</button><button type="button" role="tab" id="tabStyle" aria-selected="false" onclick="Studio.changeInspectorTab('style')">样式</button><button type="button" role="tab" id="tabResponsive" aria-selected="false" onclick="Studio.changeInspectorTab('responsive')">手机/平板</button></div>
+    <aside class="right-pane"><div class="pane-heading"><div><span class="overline">当前内容</span><h3>修改内容</h3></div><button type="button" id="sfCloseInspector" class="sf-close-inspector" onclick="Studio.closePane()" aria-label="关闭编辑面板">关闭</button><span class="chip" id="blockTypeLabel">页面</span></div>
+      <div class="sf-inspector-mode"><span id="sfModeExplanation">当前显示常用设置</span><button type="button" id="studioAdvancedButton" aria-pressed="false" onclick="Studio.toggleAdvanced()">更多设计设置</button></div><div class="inspector-nav" role="tablist" aria-label="属性编辑分类"><button type="button" role="tab" id="tabContent" aria-selected="true" onclick="Studio.changeInspectorTab('content')">内容</button><button type="button" role="tab" id="tabStyle" aria-selected="false" onclick="Studio.changeInspectorTab('style')">样式</button><button type="button" role="tab" id="tabResponsive" aria-selected="false" onclick="Studio.changeInspectorTab('responsive')">手机/平板</button></div>
       <div class="inspector" id="inspector"><div class="no-selection">直接点击中间画布的任意区块，即可开始编辑。</div></div>
       <details class="right-foot sf-advanced-foot"><summary>高级：动态数据变量</summary><p>支持 <code>{{site.name}}</code>、<code>{{page.title}}</code> 等变量；动态内容列表可以按网站内容类型绑定。</p></details>
     </aside>
@@ -57,7 +57,7 @@
     <div class="sf-showcase-head"><div><small>仅预览 · 不修改网站内容</small><h2 id="themePreviewTitle">选择适合网站的主题效果</h2><p>先比较布局和手机显示效果，再决定是否到「网站设计」中应用主题。</p></div><button type="button" class="ui-btn ghost" onclick="Studio.closeThemePreview()" aria-label="关闭主题预览">关闭 ×</button></div>
     <div class="sf-showcase-tools"><label>主题风格<select id="themePreviewTheme" onchange="Studio.updateThemePreview()"><option value="automotive">汽车与出行</option><option value="industrial">工业与制造</option><option value="corporate">企业品牌</option><option value="minimal">简约展示</option></select></label><label>参考页面<select id="themePreviewPage" onchange="Studio.updateThemePreview()"><option value="home">首页</option><option value="listing">产品列表</option><option value="product">产品详情</option><option value="article">文章详情</option><option value="about">关于我们</option><option value="contact">联系我们</option></select></label><div class="sf-showcase-device" role="group" aria-label="主题参考设备"><button type="button" data-theme-device="desktop" aria-pressed="true" onclick="Studio.themeDevice('desktop')">电脑</button><button type="button" data-theme-device="tablet" aria-pressed="false" onclick="Studio.themeDevice('tablet')">平板</button><button type="button" data-theme-device="phone" aria-pressed="false" onclick="Studio.themeDevice('phone')">手机</button></div></div>
     <p class="sf-showcase-status" id="themePreviewStatus" role="status" aria-live="polite">示例使用主题最新版本，可能与你网站锁定的主题版本不同。不会修改当前页面。</p><div class="sf-showcase-stage"><div id="themePreviewFrameShell" class="sf-showcase-frame"><iframe id="themePreviewFrame" title="主题示例页面" sandbox="allow-scripts" referrerpolicy="no-referrer" loading="lazy"></iframe></div></div>
-    <div class="sf-showcase-footer"><span>预览不会保存、更换或发布主题。确认效果后请到网站设计里操作。</span><a class="ui-btn ghost" href="/theme-gallery" target="_blank" rel="noopener">打开完整主题图库 ↗</a></div>
+    <div class="sf-showcase-footer"><span>编辑器仅查看外观；完整图库支持交互。预览不会保存或发布主题。<button type="button" id="themePreviewRetry" class="ui-btn ghost" onclick="Studio.updateThemePreview()" hidden>重新加载</button></span><a class="ui-btn ghost" href="/theme-gallery" target="_blank" rel="noopener">打开完整主题图库 ↗</a></div>
   </dialog>
   <dialog id="sfGuideDialog" class="sf-help-dialog" aria-labelledby="sfGuideTitle">
     <div class="sf-help-head"><div><span class="overline">新手指南</span><h2 id="sfGuideTitle">3 分钟学会编辑页面</h2></div><button type="button" class="ui-btn ghost" onclick="document.querySelector('#sfGuideDialog').close()">关闭 ×</button></div>