diff --git a/frontend/src/App.css b/frontend/src/App.css
index 75d71cc..c119e36 100644
--- a/frontend/src/App.css
+++ b/frontend/src/App.css
@@ -794,6 +794,31 @@ body {
   gap: 4px;
 }
 
+.modal-title-row.modal-title-with-close {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 10px;
+  position: relative;
+  padding-right: 42px;
+  min-height: 28px;
+}
+
+.modal-title-main {
+  min-width: 0;
+  display: grid;
+  gap: 4px;
+}
+
+.modal-title-actions {
+  position: absolute;
+  right: 0;
+  top: 0;
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+}
+
 .modal-sub {
   color: var(--subtitle);
   font-size: 12px;
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index abf11b3..f45154a 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -1,5 +1,5 @@
 import { useEffect, useMemo, useState } from 'react';
-import { Boxes, MoonStar, Sparkles, SunMedium } from 'lucide-react';
+import { MoonStar, SunMedium, X } from 'lucide-react';
 import {
   useAppStore,
 } from './store/appStore';
@@ -106,11 +106,15 @@ function App() {
       {!urlView.compactMode && showImageFactory && (
         <div className="modal-mask app-modal-mask" onClick={() => setShowImageFactory(false)}>
           <div className="modal-card app-modal-card" onClick={(e) => e.stopPropagation()}>
-            <div className="row-between">
-              <h3>{t.nav.images.title}</h3>
-              <button className="btn btn-secondary btn-sm icon-btn" onClick={() => setShowImageFactory(false)} title={t.close} aria-label={t.close}>
-                <Boxes size={14} />
-              </button>
+            <div className="modal-title-row modal-title-with-close">
+              <div className="modal-title-main">
+                <h3>{t.nav.images.title}</h3>
+              </div>
+              <div className="modal-title-actions">
+                <button className="btn btn-secondary btn-sm icon-btn" onClick={() => setShowImageFactory(false)} title={t.close} aria-label={t.close}>
+                  <X size={14} />
+                </button>
+              </div>
             </div>
             <div className="app-modal-body">
               <ImageFactoryModule />
@@ -122,11 +126,15 @@ function App() {
       {!urlView.compactMode && showCreateWizard && (
         <div className="modal-mask app-modal-mask" onClick={() => setShowCreateWizard(false)}>
           <div className="modal-card app-modal-card" onClick={(e) => e.stopPropagation()}>
-            <div className="row-between">
-              <h3>{t.nav.onboarding.title}</h3>
-              <button className="btn btn-secondary btn-sm icon-btn" onClick={() => setShowCreateWizard(false)} title={t.close} aria-label={t.close}>
-                <Sparkles size={14} />
-              </button>
+            <div className="modal-title-row modal-title-with-close">
+              <div className="modal-title-main">
+                <h3>{t.nav.onboarding.title}</h3>
+              </div>
+              <div className="modal-title-actions">
+                <button className="btn btn-secondary btn-sm icon-btn" onClick={() => setShowCreateWizard(false)} title={t.close} aria-label={t.close}>
+                  <X size={14} />
+                </button>
+              </div>
             </div>
             <div className="app-modal-body">
               <BotWizardModule
diff --git a/frontend/src/i18n/dashboard.en.ts b/frontend/src/i18n/dashboard.en.ts
index 0c84fc5..eab9fb1 100644
--- a/frontend/src/i18n/dashboard.en.ts
+++ b/frontend/src/i18n/dashboard.en.ts
@@ -121,6 +121,9 @@ export const dashboardEn = {
   filePreview: 'File Preview',
   fileTruncated: 'Large file: preview is truncated.',
   download: 'Download',
+  copyAddress: 'Copy URL',
+  urlCopied: 'URL copied.',
+  urlCopyFail: 'Failed to copy URL.',
   close: 'Close',
   cronViewer: 'Scheduled Jobs',
   cronReload: 'Reload jobs',
diff --git a/frontend/src/i18n/dashboard.zh-cn.ts b/frontend/src/i18n/dashboard.zh-cn.ts
index 9c27231..92e9f00 100644
--- a/frontend/src/i18n/dashboard.zh-cn.ts
+++ b/frontend/src/i18n/dashboard.zh-cn.ts
@@ -121,6 +121,9 @@ export const dashboardZhCn = {
   filePreview: '文件预览',
   fileTruncated: '文件较大，当前内容为截断预览。',
   download: '下载',
+  copyAddress: '复制地址',
+  urlCopied: '地址已复制。',
+  urlCopyFail: '复制地址失败。',
   close: '关闭',
   cronViewer: '定时任务',
   cronReload: '刷新任务',
diff --git a/frontend/src/modules/dashboard/BotDashboardModule.tsx b/frontend/src/modules/dashboard/BotDashboardModule.tsx
index b0caf72..807396f 100644
--- a/frontend/src/modules/dashboard/BotDashboardModule.tsx
+++ b/frontend/src/modules/dashboard/BotDashboardModule.tsx
@@ -65,6 +65,7 @@ interface WorkspacePreviewState {
   ext: string;
   isMarkdown: boolean;
   isImage: boolean;
+  isHtml: boolean;
 }
 
 interface WorkspaceUploadResponse {
@@ -208,7 +209,7 @@ function normalizeRuntimeState(s?: string) {
 function isPreviewableWorkspaceFile(node: WorkspaceNode) {
   if (node.type !== 'file') return false;
   const ext = (node.ext || '').toLowerCase();
-  return ['.md', '.json', '.log', '.txt', '.csv', '.pdf', '.png', '.jpg', '.jpeg', '.webp', '.doc', '.docx', '.xls', '.xlsx', '.xlsm', '.ppt', '.pptx', '.odt', '.ods', '.odp', '.wps'].includes(ext);
+  return ['.md', '.json', '.log', '.txt', '.csv', '.html', '.htm', '.pdf', '.png', '.jpg', '.jpeg', '.webp', '.doc', '.docx', '.xls', '.xlsx', '.xlsm', '.ppt', '.pptx', '.odt', '.ods', '.odp', '.wps'].includes(ext);
 }
 
 function isPdfPath(path: string) {
@@ -220,6 +221,11 @@ function isImagePath(path: string) {
   return normalized.endsWith('.png') || normalized.endsWith('.jpg') || normalized.endsWith('.jpeg') || normalized.endsWith('.webp');
 }
 
+function isHtmlPath(path: string) {
+  const normalized = String(path || '').trim().toLowerCase();
+  return normalized.endsWith('.html') || normalized.endsWith('.htm');
+}
+
 function isOfficePath(path: string) {
   const normalized = String(path || '').trim().toLowerCase();
   return ['.doc', '.docx', '.xls', '.xlsx', '.xlsm', '.ppt', '.pptx', '.odt', '.ods', '.odp', '.wps'].some((ext) =>
@@ -229,7 +235,7 @@ function isOfficePath(path: string) {
 
 function isPreviewableWorkspacePath(path: string) {
   const normalized = String(path || '').trim().toLowerCase();
-  return ['.md', '.json', '.log', '.txt', '.csv', '.pdf', '.png', '.jpg', '.jpeg', '.webp', '.doc', '.docx', '.xls', '.xlsx', '.xlsm', '.ppt', '.pptx', '.odt', '.ods', '.odp', '.wps'].some((ext) =>
+  return ['.md', '.json', '.log', '.txt', '.csv', '.html', '.htm', '.pdf', '.png', '.jpg', '.jpeg', '.webp', '.doc', '.docx', '.xls', '.xlsx', '.xlsm', '.ppt', '.pptx', '.odt', '.ods', '.odp', '.wps'].some((ext) =>
     normalized.endsWith(ext),
   );
 }
@@ -238,7 +244,7 @@ function workspaceFileAction(path: string): 'preview' | 'download' | 'unsupporte
   const normalized = String(path || '').trim();
   if (!normalized) return 'unsupported';
   if (isPdfPath(normalized) || isOfficePath(normalized)) return 'download';
-  if (isImagePath(normalized)) return 'preview';
+  if (isImagePath(normalized) || isHtmlPath(normalized)) return 'preview';
   const lower = normalized.toLowerCase();
   if (['.md', '.json', '.log', '.txt', '.csv'].some((ext) => lower.endsWith(ext))) return 'preview';
   return 'unsupported';
@@ -269,7 +275,7 @@ function decorateWorkspacePathsForMarkdown(text: string) {
     '[$1]($2)',
   );
   const workspacePathPattern =
-    /\/root\/\.nanobot\/workspace\/[^\n\r<>"'`]+?\.(?:md|json|log|txt|csv|pdf|png|jpg|jpeg|webp|doc|docx|xls|xlsx|xlsm|ppt|pptx|odt|ods|odp|wps)\b/gi;
+    /\/root\/\.nanobot\/workspace\/[^\n\r<>"'`]+?\.(?:md|json|log|txt|csv|html|htm|pdf|png|jpg|jpeg|webp|doc|docx|xls|xlsx|xlsm|ppt|pptx|odt|ods|odp|wps)\b/gi;
   return normalizedExistingLinks.replace(workspacePathPattern, (fullPath) => {
     const normalized = normalizeDashboardAttachmentPath(fullPath);
     if (!normalized) return fullPath;
@@ -433,6 +439,33 @@ export function BotDashboardModule({
     link.click();
     link.remove();
   };
+  const copyWorkspacePreviewUrl = async (filePath: string) => {
+    const normalized = String(filePath || '').trim();
+    if (!selectedBotId || !normalized) return;
+    const hrefRaw = buildWorkspaceDownloadHref(normalized, false);
+    const href = (() => {
+      try {
+        return new URL(hrefRaw, window.location.origin).href;
+      } catch {
+        return hrefRaw;
+      }
+    })();
+    try {
+      if (navigator.clipboard?.writeText) {
+        await navigator.clipboard.writeText(href);
+      } else {
+        const ta = document.createElement('textarea');
+        ta.value = href;
+        document.body.appendChild(ta);
+        ta.select();
+        document.execCommand('copy');
+        ta.remove();
+      }
+      notify(t.urlCopied, { tone: 'success' });
+    } catch {
+      notify(t.urlCopyFail, { tone: 'error' });
+    }
+  };
   const openWorkspacePathFromChat = (path: string) => {
     const normalized = String(path || '').trim();
     if (!normalized) return;
@@ -454,7 +487,7 @@ export function BotDashboardModule({
     const source = String(text || '');
     if (!source) return [source];
     const pattern =
-      /\[(\/root\/\.nanobot\/workspace\/[^\]]+?\.(?:md|json|log|txt|csv|pdf|png|jpg|jpeg|webp|doc|docx|xls|xlsx|xlsm|ppt|pptx|odt|ods|odp|wps))\]\((https:\/\/workspace\.local\/open\/[^)\s]+)\)|\/root\/\.nanobot\/workspace\/[^\n\r<>"'`]+?\.(?:md|json|log|txt|csv|pdf|png|jpg|jpeg|webp|doc|docx|xls|xlsx|xlsm|ppt|pptx|odt|ods|odp|wps)\b|https:\/\/workspace\.local\/open\/[^\s)]+/gi;
+      /\[(\/root\/\.nanobot\/workspace\/[^\]]+?\.(?:md|json|log|txt|csv|html|htm|pdf|png|jpg|jpeg|webp|doc|docx|xls|xlsx|xlsm|ppt|pptx|odt|ods|odp|wps))\]\((https:\/\/workspace\.local\/open\/[^)\s]+)\)|\/root\/\.nanobot\/workspace\/[^\n\r<>"'`]+?\.(?:md|json|log|txt|csv|html|htm|pdf|png|jpg|jpeg|webp|doc|docx|xls|xlsx|xlsm|ppt|pptx|odt|ods|odp|wps)\b|https:\/\/workspace\.local\/open\/[^\s)]+/gi;
     const nodes: ReactNode[] = [];
     let lastIndex = 0;
     let matchIndex = 0;
@@ -885,6 +918,20 @@ export function BotDashboardModule({
         ext: fileExt ? `.${fileExt}` : '',
         isMarkdown: false,
         isImage: true,
+        isHtml: false,
+      });
+      return;
+    }
+    if (isHtmlPath(normalizedPath)) {
+      const fileExt = (normalizedPath.split('.').pop() || '').toLowerCase();
+      setWorkspacePreview({
+        path: normalizedPath,
+        content: '',
+        truncated: false,
+        ext: fileExt ? `.${fileExt}` : '',
+        isMarkdown: false,
+        isImage: false,
+        isHtml: true,
       });
       return;
     }
@@ -910,6 +957,7 @@ export function BotDashboardModule({
         ext: textExt ? `.${textExt}` : '',
         isMarkdown: textExt === 'md' || Boolean(res.data.is_markdown),
         isImage: false,
+        isHtml: false,
       });
     } catch (error: any) {
       const msg = error?.response?.data?.detail || t.fileReadFail;
@@ -2102,9 +2150,16 @@ export function BotDashboardModule({
       {showBaseModal && (
         <div className="modal-mask" onClick={() => setShowBaseModal(false)}>
           <div className="modal-card" onClick={(e) => e.stopPropagation()}>
-            <div className="modal-title-row">
-              <h3>{t.baseConfig}</h3>
-              <span className="modal-sub">{t.baseConfigSub}</span>
+            <div className="modal-title-row modal-title-with-close">
+              <div className="modal-title-main">
+                <h3>{t.baseConfig}</h3>
+                <span className="modal-sub">{t.baseConfigSub}</span>
+              </div>
+              <div className="modal-title-actions">
+                <button className="btn btn-secondary btn-sm icon-btn" onClick={() => setShowBaseModal(false)} title={t.close} aria-label={t.close}>
+                  <X size={14} />
+                </button>
+              </div>
             </div>
 
             <label className="field-label">{t.botIdReadonly}</label>
@@ -2153,7 +2208,16 @@ export function BotDashboardModule({
       {showParamModal && (
         <div className="modal-mask" onClick={() => setShowParamModal(false)}>
           <div className="modal-card" onClick={(e) => e.stopPropagation()}>
-            <h3>{t.modelParams}</h3>
+            <div className="modal-title-row modal-title-with-close">
+              <div className="modal-title-main">
+                <h3>{t.modelParams}</h3>
+              </div>
+              <div className="modal-title-actions">
+                <button className="btn btn-secondary btn-sm icon-btn" onClick={() => setShowParamModal(false)} title={t.close} aria-label={t.close}>
+                  <X size={14} />
+                </button>
+              </div>
+            </div>
             <div className="slider-row">
               <label className="field-label">Temperature: {Number(editForm.temperature).toFixed(2)}</label>
               <input type="range" min="0" max="1" step="0.01" value={editForm.temperature} onChange={(e) => setEditForm((p) => ({ ...p, temperature: clampTemperature(Number(e.target.value)) }))} />
@@ -2175,7 +2239,16 @@ export function BotDashboardModule({
       {showChannelModal && (
         <div className="modal-mask" onClick={() => setShowChannelModal(false)}>
           <div className="modal-card modal-wide" onClick={(e) => e.stopPropagation()}>
-            <h3>{lc.wizardSectionTitle}</h3>
+            <div className="modal-title-row modal-title-with-close">
+              <div className="modal-title-main">
+                <h3>{lc.wizardSectionTitle}</h3>
+              </div>
+              <div className="modal-title-actions">
+                <button className="btn btn-secondary btn-sm icon-btn" onClick={() => setShowChannelModal(false)} title={t.close} aria-label={t.close}>
+                  <X size={14} />
+                </button>
+              </div>
+            </div>
             <div className="card" style={{ fontSize: 12, color: 'var(--muted)' }}>
               {lc.wizardSectionDesc}
             </div>
@@ -2278,10 +2351,6 @@ export function BotDashboardModule({
                 <Plus size={14} />
               </button>
             </div>
-            <div className="row-between">
-              <span className="field-label">{lc.wizardSectionDesc}</span>
-              <button className="btn btn-primary" onClick={() => setShowChannelModal(false)}>{lc.close}</button>
-            </div>
           </div>
         </div>
       )}
@@ -2289,7 +2358,16 @@ export function BotDashboardModule({
       {showSkillsModal && (
         <div className="modal-mask" onClick={() => setShowSkillsModal(false)}>
           <div className="modal-card modal-wide" onClick={(e) => e.stopPropagation()}>
-            <h3>{t.skillsPanel}</h3>
+            <div className="modal-title-row modal-title-with-close">
+              <div className="modal-title-main">
+                <h3>{t.skillsPanel}</h3>
+              </div>
+              <div className="modal-title-actions">
+                <button className="btn btn-secondary btn-sm icon-btn" onClick={() => setShowSkillsModal(false)} title={t.close} aria-label={t.close}>
+                  <X size={14} />
+                </button>
+              </div>
+            </div>
             <div className="wizard-channel-list">
               {botSkills.length === 0 ? (
                 <div className="ops-empty-inline">{t.skillsEmpty}</div>
@@ -2338,10 +2416,6 @@ export function BotDashboardModule({
               </button>
               <span className="field-label">{t.zipOnlyHint}</span>
             </div>
-            <div className="row-between">
-              <span className="field-label"> </span>
-              <button className="btn btn-primary" onClick={() => setShowSkillsModal(false)}>{t.close}</button>
-            </div>
           </div>
         </div>
       )}
@@ -2349,7 +2423,16 @@ export function BotDashboardModule({
       {showEnvParamsModal && (
         <div className="modal-mask" onClick={() => setShowEnvParamsModal(false)}>
           <div className="modal-card modal-wide" onClick={(e) => e.stopPropagation()}>
-            <h3>{t.envParams}</h3>
+            <div className="modal-title-row modal-title-with-close">
+              <div className="modal-title-main">
+                <h3>{t.envParams}</h3>
+              </div>
+              <div className="modal-title-actions">
+                <button className="btn btn-secondary btn-sm icon-btn" onClick={() => setShowEnvParamsModal(false)} title={t.close} aria-label={t.close}>
+                  <X size={14} />
+                </button>
+              </div>
+            </div>
             <div className="field-label" style={{ marginBottom: 8 }}>{t.envParamsDesc}</div>
             <div className="wizard-channel-list">
               {envEntries.length === 0 ? (
@@ -2438,17 +2521,24 @@ export function BotDashboardModule({
       {showCronModal && (
         <div className="modal-mask" onClick={() => setShowCronModal(false)}>
           <div className="modal-card modal-wide" onClick={(e) => e.stopPropagation()}>
-            <div className="row-between">
-              <h3>{t.cronViewer}</h3>
-              <button
-                className="btn btn-secondary btn-sm icon-btn"
-                onClick={() => selectedBot && void loadCronJobs(selectedBot.id)}
-                title={t.cronReload}
-                aria-label={t.cronReload}
-                disabled={cronLoading}
-              >
-                <RefreshCw size={14} className={cronLoading ? 'animate-spin' : ''} />
-              </button>
+            <div className="modal-title-row modal-title-with-close">
+              <div className="modal-title-main">
+                <h3>{t.cronViewer}</h3>
+              </div>
+              <div className="modal-title-actions">
+                <button
+                  className="btn btn-secondary btn-sm icon-btn"
+                  onClick={() => selectedBot && void loadCronJobs(selectedBot.id)}
+                  title={t.cronReload}
+                  aria-label={t.cronReload}
+                  disabled={cronLoading}
+                >
+                  <RefreshCw size={14} className={cronLoading ? 'animate-spin' : ''} />
+                </button>
+                <button className="btn btn-secondary btn-sm icon-btn" onClick={() => setShowCronModal(false)} title={t.close} aria-label={t.close}>
+                  <X size={14} />
+                </button>
+              </div>
             </div>
             {cronLoading ? (
               <div className="ops-empty-inline">{t.cronLoading}</div>
@@ -2502,10 +2592,6 @@ export function BotDashboardModule({
                 })}
               </div>
             )}
-            <div className="row-between">
-              <button className="btn btn-secondary" onClick={() => setShowCronModal(false)}>{t.close}</button>
-              <span />
-            </div>
           </div>
         </div>
       )}
@@ -2513,7 +2599,16 @@ export function BotDashboardModule({
       {showAgentModal && (
         <div className="modal-mask" onClick={() => setShowAgentModal(false)}>
           <div className="modal-card modal-wide" onClick={(e) => e.stopPropagation()}>
-            <h3>{t.agentFiles}</h3>
+            <div className="modal-title-row modal-title-with-close">
+              <div className="modal-title-main">
+                <h3>{t.agentFiles}</h3>
+              </div>
+              <div className="modal-title-actions">
+                <button className="btn btn-secondary btn-sm icon-btn" onClick={() => setShowAgentModal(false)} title={t.close} aria-label={t.close}>
+                  <X size={14} />
+                </button>
+              </div>
+            </div>
             <div className="wizard-agent-layout">
               <div className="agent-tabs-vertical">
                 {(['AGENTS', 'SOUL', 'USER', 'TOOLS', 'IDENTITY'] as AgentTab[]).map((tab) => (
@@ -2533,16 +2628,19 @@ export function BotDashboardModule({
       {showRuntimeActionModal && (
         <div className="modal-mask" onClick={() => setShowRuntimeActionModal(false)}>
           <div className="modal-card modal-preview" onClick={(e) => e.stopPropagation()}>
-            <div className="modal-title-row">
-              <h3>{t.lastAction}</h3>
+            <div className="modal-title-row modal-title-with-close">
+              <div className="modal-title-main">
+                <h3>{t.lastAction}</h3>
+              </div>
+              <div className="modal-title-actions">
+                <button className="btn btn-secondary btn-sm icon-btn" onClick={() => setShowRuntimeActionModal(false)} title={t.close} aria-label={t.close}>
+                  <X size={14} />
+                </button>
+              </div>
             </div>
             <div className="workspace-preview-body">
               <pre>{runtimeAction}</pre>
             </div>
-            <div className="row-between">
-              <span />
-              <button className="btn btn-primary" onClick={() => setShowRuntimeActionModal(false)}>{t.close}</button>
-            </div>
           </div>
         </div>
       )}
@@ -2581,6 +2679,12 @@ export function BotDashboardModule({
                   src={`${APP_ENDPOINTS.apiBase}/bots/${selectedBotId}/workspace/download?path=${encodeURIComponent(workspacePreview.path)}`}
                   alt={workspacePreview.path.split('/').pop() || 'workspace-image'}
                 />
+              ) : workspacePreview.isHtml ? (
+                <iframe
+                  className="workspace-preview-embed"
+                  src={`${APP_ENDPOINTS.apiBase}/bots/${selectedBotId}/workspace/download?path=${encodeURIComponent(workspacePreview.path)}`}
+                  title={workspacePreview.path}
+                />
               ) : workspacePreview.isMarkdown ? (
                 <div className="workspace-markdown">
                   <ReactMarkdown
@@ -2601,15 +2705,24 @@ export function BotDashboardModule({
             <div className="row-between">
               <span className="workspace-preview-meta mono">{workspacePreview.ext || '-'}</span>
               <div style={{ display: 'inline-flex', alignItems: 'center', gap: 8 }}>
-                <a
-                  className="btn btn-secondary"
-                  href={`${APP_ENDPOINTS.apiBase}/bots/${selectedBotId}/workspace/download?path=${encodeURIComponent(workspacePreview.path)}&download=1`}
-                  target="_blank"
-                  rel="noopener noreferrer"
-                  download={workspacePreview.path.split('/').pop() || 'workspace-file'}
-                >
-                  {t.download}
-                </a>
+                {workspacePreview.isHtml ? (
+                  <button
+                    className="btn btn-secondary"
+                    onClick={() => void copyWorkspacePreviewUrl(workspacePreview.path)}
+                  >
+                    {t.copyAddress}
+                  </button>
+                ) : (
+                  <a
+                    className="btn btn-secondary"
+                    href={`${APP_ENDPOINTS.apiBase}/bots/${selectedBotId}/workspace/download?path=${encodeURIComponent(workspacePreview.path)}&download=1`}
+                    target="_blank"
+                    rel="noopener noreferrer"
+                    download={workspacePreview.path.split('/').pop() || 'workspace-file'}
+                  >
+                    {t.download}
+                  </a>
+                )}
               </div>
             </div>
           </div>