fix: align website with unified execution

Remove obsolete work-mode labels from bilingual product previews and describe tools through enabled capabilities and Runtime assignments. Fix preview overlap and narrow-screen clipping, guard the updated copy, and record execution migration and validation results.

Release note: 官网同步移除 Ask/Execute 模式展示，更新工具配置说明，并修复桌面与手机首屏示意的遮挡和裁切。

sites/README.md

@@ -13,6 +13,8 @@ x64 / arm64 安装包与独立龙芯 loong64 预览版，并说明兼容性与
 产品演示使用可维护的 HTML/CSS 与 SVG 图标，不使用真实截图。界面中直接呈现
 任务、回答和处理结果，不附加“界面示意”“示例回答”等标签。更新时同时维护
 中英文文本，演示内容须符合实际功能，不编造用户案例或性能指标。
+首屏示意显示所选 Runtime，不展示 Ask / Execute 模式或一般工具审批。工具说明以
+已启用能力和 MCP 服务分配为准；站点校验会检查中英文页面中的旧模式文案与控件。
 FAQ 使用原生 details/summary，说明模型费用、数据流向、组件准备和远端使用条件。
 英文页面位于 `en.html`，用平台与架构覆盖描述同一产品事实，不使用中文信创
 政策语汇；页面会标明独立的 LoongArch 实验预览，但三个平台的下载按钮仍始终

sites/en.html

@@ -185,7 +185,7 @@
                       <strong>Fix empty search results</strong>
                       <span>Project: Knowledge search</span>
                     </div>
-                    <div class="mode-pill">Continue</div>
+                    <div class="runtime-pill">Continue</div>
                   </div>
                   <div class="message-area">
                     <div class="message message--user">Search returns nothing with extra spaces. Fix it and add tests.</div>
@@ -217,7 +217,7 @@
                 </div>
               </div>
             </div>
-            <div class="floating-card floating-card--approval">
+            <div class="floating-card floating-card--agents">
               <span class="floating-icon">
                 <svg viewBox="0 0 24 24" aria-hidden="true"><path d="m8 7-5 5 5 5M16 7l5 5-5 5M14 4l-4 16" /></svg>
               </span>
@@ -377,7 +377,7 @@
               </div>
               <span class="feature-number">04</span>
               <h3>Ask questions or give it a task</h3>
-              <p>No work-mode switch is needed. Available tools depend on the selected Runtime and enabled capabilities. Operations use the current account's permissions, and tool calls appear in the run history.</p>
+              <p>Available tools depend on the selected Runtime and enabled capabilities. Manage MCP services and their Runtime assignments in settings. Operations use the current account's permissions, and tool calls appear in the run history.</p>
             </article>
 
             <article class="feature-card">

sites/index.html

@@ -190,7 +190,7 @@
                       <strong>修复搜索空结果</strong>
                       <span>项目：知识检索</span>
                     </div>
-                    <div class="mode-pill">Continue · 执行</div>
+                    <div class="runtime-pill">Continue</div>
                   </div>
                   <div class="message-area">
                     <div class="message message--user">搜索词带空格时没有结果，请修复并补充测试。</div>
@@ -217,12 +217,12 @@
                   </div>
                   <div class="composer">
                     <span>描述你想完成的编程任务…</span>
-                    <div class="composer-actions"><span>执行</span><b>↑</b></div>
+                    <div class="composer-actions"><span>Continue</span><b>↑</b></div>
                   </div>
                 </div>
               </div>
             </div>
-            <div class="floating-card floating-card--approval">
+            <div class="floating-card floating-card--agents">
               <span class="floating-icon">
                 <svg viewBox="0 0 24 24" aria-hidden="true"><path d="m8 7-5 5 5 5M16 7l5 5-5 5M14 4l-4 16" /></svg>
               </span>
@@ -462,7 +462,7 @@
               </div>
               <span class="feature-number">04</span>
               <h3>直接提问或交付任务</h3>
-              <p>无需切换工作模式。可用工具由所选 Runtime 和已启用能力决定，操作使用当前账号权限，工具调用保留在运行记录中。</p>
+              <p>可用工具由所选 Runtime 和已启用能力决定。你可以在设置中管理 MCP 服务及其 Runtime 分配，操作使用当前账号权限，工具调用保留在运行记录中。</p>
             </article>
 
             <article class="feature-card">

sites/scripts/validate.mjs

@@ -303,6 +303,11 @@ for (const [relativePath, content] of [["index.html", html], ["en.html", english
     `${relativePath} 常见问题必须使用原生可展开控件`);
   report(!/approval-controlled|受控执行|继续经过审批/.test(content),
     `${relativePath} 不得保留过时的执行审批文案`);
+  report(!/\bExecute\b|Ask\s*(?:模式|保持只读|stays read-only)|mode-pill|mode-row|floating-card--approval/.test(content),
+    `${relativePath} 不得保留工作模式或工具审批的文案与控件`);
+  report(/class="runtime-pill">Continue<\/div>/.test(content) &&
+    /class="composer-actions"><span>Continue<\/span>/.test(content),
+    `${relativePath} 首屏示意应显示 Runtime，不再显示执行模式`);
 }
 
 for (const forbiddenCopy of ["信创", "国产", "统信 UOS", "银河麒麟", "海光", "兆芯", "鲲鹏", "飞腾"]) {

sites/styles.css

@@ -127,7 +127,6 @@ html {
 }
 
 body {
-  min-width: 320px;
   margin: 0;
   overflow-x: hidden;
   background: var(--surface-canvas);
@@ -855,7 +854,7 @@ p {
   font-size: 8px;
 }
 
-.mode-pill {
+.runtime-pill {
   padding: 4px 8px;
   border: 1px solid var(--border-default);
   border-radius: var(--radius-pill);
@@ -1186,9 +1185,9 @@ p {
   font-size: 8px;
 }
 
-.floating-card--approval {
+.floating-card--agents {
   right: -32px;
-  bottom: 58px;
+  bottom: calc(-1 * var(--space-4));
 }
 
 .floating-card--scope {
@@ -1356,7 +1355,6 @@ p {
   margin-bottom: 0;
 }
 
-.mode-row,
 .provider-pills {
   display: flex;
   flex-wrap: wrap;
@@ -1364,7 +1362,6 @@ p {
   margin-top: var(--space-6);
 }
 
-.mode-row span,
 .provider-pills span {
   display: inline-flex;
   align-items: center;
@@ -1378,18 +1375,6 @@ p {
   font-weight: 680;
 }
 
-.mode-row small {
-  color: var(--text-muted);
-  font-size: var(--font-caption);
-  font-weight: 500;
-}
-
-.mode-row .is-accent {
-  border-color: color-mix(in srgb, var(--accent) 35%, var(--border-default));
-  background: var(--accent-subtle);
-  color: var(--accent);
-}
-
 .download-section {
   padding-top: var(--section-space);
 }
@@ -1723,7 +1708,7 @@ p {
     transform-origin: center top;
   }
 
-  .floating-card--approval {
+  .floating-card--agents {
     right: -10px;
   }
 
@@ -1792,9 +1777,8 @@ p {
     right: 0;
   }
 
-  .floating-card--approval {
+  .floating-card--agents {
     right: 0;
-    bottom: 34px;
   }
 
   .proof-grid {
@@ -1985,6 +1969,8 @@ p {
 
   .app-layout {
     grid-template-columns: minmax(0, 1fr);
+    height: auto;
+    min-height: 420px;
   }
 
   .app-sidebar {
@@ -2003,7 +1989,7 @@ p {
   .tool-card strong,
   .tool-card span,
   .app-content-header span,
-  .mode-pill {
+  .runtime-pill {
     font-size: 10px;
   }
 
@@ -2017,9 +2003,9 @@ p {
     right: 2px;
   }
 
-  .floating-card--approval {
+  .floating-card--agents {
     right: 2px;
-    bottom: 18px;
+    bottom: var(--space-2);
   }
 
   .floating-card {