fix: website download links -> GitHub Releases, drop direct-channel copy

- website/: zero-dependency static landing page (HTML+CSS), corporate
  light theme, real app screenshots, download links pointing to the
  git.codingplan.site release channel (exe/msi) with GitHub mirror
- .github/workflows/deploy-website.yml: deploy website/ to GitHub Pages
  on push to main (paths: website/**)
- package.json: author -> CodingPlan.Site
- README: link to the site and its source folder

.github/workflows/deploy-website.yml

@@ -0,0 +1,31 @@
+name: Deploy website to GitHub Pages
+
+on:
+  push:
+    branches: [main]
+    paths: ['website/**']
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: pages
+  cancel-in-progress: true
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/configure-pages@v5
+      - uses: actions/upload-pages-artifact@v3
+        with:
+          path: website
+      - id: deployment
+        uses: actions/deploy-pages@v4

CHANGELOG.en.md

@@ -1,5 +1,17 @@
 # OpenTerminal Changelog
 
+## v1.0.15 - 2026-09-20
+
+- **Custom terminal background image**: Settings → Theme → Background image lets you use any local image as the terminal background, with 10%–100% image opacity control; removing the image restores the solid background
+- **Duplicate-name warning in the theme editor**: creating or renaming a theme that collides with a builtin or another custom theme now shows a hint (saving is still allowed)
+- Theme editor seed colors are normalized; invalid color values can no longer enter custom themes
+- Corrupted custom theme colors are auto-repaired to defaults with a warning logged
+
+- The selected item in the settings dialog's left navigation is now white, matching the contrast of unselected items (fixes unreadable blue text on dark backgrounds)
+- New background-image and opacity controls ship with localized strings in all four languages (zh-CN / zh-TW / en / ja)
+
+- Added freeze-duration probes for the renderer and main process to help diagnose future "not responding" reports
+
 ## v1.0.14 - 2026-09-20
 
 - Fixed silent corruption of uploaded files **larger than ~250KB** (size looked correct but the content had scrambled bytes)

CHANGELOG.ja.md

@@ -1,5 +1,17 @@
 # OpenTerminal 更新履歴
 
+## v1.0.15 - 2026-09-20
+
+- **ターミナルの背景画像をカスタマイズ**：設定 → テーマ → 背景画像で、任意のローカル画像をターミナルの背景に指定でき、画像の不透明度（10%～100%）も調整可能。画像を削除すると単色背景に戻ります
+- **テーマエディターの名前重複警告**：新規作成・編集時に内蔵テーマや他のテーマと名前が重複すると黄色のヒントを表示（保存は可能）
+- テーマエディターのシードカラーを自動正規化し、無効なカラー値がカスタムテーマに入らないように
+- 破損したカスタムテーマのカラーはデフォルト色に自動修復され、警告ログを記録
+
+- 設定ダイアログ左側ナビの選択中項目の文字を白色に変更し、未選択項目と同じコントラストに（濃い背景で青い文字が見えにくい問題を修正）
+- 背景画像・不透明度などの新規コントロールと4言語（簡体字/繁体字/英語/日本語）の文言を同時リリース
+
+- レンダラーとメインプロセスにフリーズ時間の検出ログを追加し、「応答なし」問題の今後の診断に役立てます
+
 ## v1.0.14 - 2026-09-20
 
 - **約 250KB を超える**アップロードファイルが静かに破損する問題を修正（サイズは正しいのに内容のバイトが乱れる）

CHANGELOG.md

@@ -1,5 +1,17 @@
 # OpenTerminal 更新日志
 
+## v1.0.15 - 2026-09-20
+
+- **自定义终端背景图片**：设置 → 主题 → 背景图片，可为终端指定任意本地图片作为背景，并支持 10%–100% 的图片不透明度调节；移除图片后恢复纯色背景
+- **主题编辑器重名提醒**：新建/编辑主题与内置或其他主题重名时给出黄色提示（仍可保存）
+- 主题编辑器种子颜色自动规范化，非法颜色值不再能进入自定义主题
+- 自定义主题颜色数据损坏时自动修复为默认色，并记录告警日志
+
+- 设置弹窗左侧导航选中项文字改为白色，与未选中项对比度一致（修复蓝色文字在深色背景上看不清的问题）
+- 设置弹窗背景图片、透明度等新增控件与四语言（简/繁/英/日）文案同步上线
+
+- 渲染进程与主进程新增冻结时长探测日志，便于后续诊断"卡死无响应"类问题
+
 ## v1.0.14 - 2026-09-20
 
 - 修复上传 **大于约 250KB** 的文件会被静默损坏的问题（文件大小正确但内容出现字节错乱）

CHANGELOG.zh-TW.md

@@ -1,5 +1,17 @@
 # OpenTerminal 更新日誌
 
+## v1.0.15 - 2026-09-20
+
+- **自訂終端機背景圖片**：設定 → 主題 → 背景圖片，可為終端機指定任意本機圖片作為背景，並支援 10%–100% 的圖片不透明度調整；移除圖片後恢復純色背景
+- **主題編輯器重名提醒**：新增/編輯主題與內建或其他主題重名時顯示黃色提示（仍可儲存）
+- 主題編輯器種子顏色自動規範化，非法顏色值不再能進入自訂主題
+- 自訂主題顏色資料損壞時自動修復為預設色，並記錄警告日誌
+
+- 設定彈窗左側導覽選取項文字改為白色，與未選取項對比一致（修復藍色文字在深色背景上看不清的問題）
+- 背景圖片、透明度等新控件與四種語言（簡/繁/英/日）文案同步上線
+
+- 渲染程序與主程序新增凍結時長探測日誌，便於後續診斷「卡死無反應」類問題
+
 ## v1.0.14 - 2026-09-20
 
 - 修復上傳 **大於約 250KB** 的檔案會被靜默損壞的問題（檔案大小正確但內容出現位元組錯亂）

README.md

@@ -2,6 +2,8 @@
 
 开源的现代化终端应用：本地终端 + SSH 远程会话 + 分屏管理 + 主题/字体定制。Electron + React + TypeScript，从 0 到 1 独立开发。
 
+> 产品官网（GitHub Pages）：<https://billowliu2.github.io/OpenTerminal/>，源码在 [`website/`](website/)。
+
 ## 快速开始
 
 ```bash

package.json

@@ -1,10 +1,10 @@
 {
   "name": "open-terminal",
   "productName": "OpenTerminal",
-  "version": "1.0.14",
+  "version": "1.0.15",
   "description": "Open-source terminal with SSH, split panes, themes and fonts",
   "main": "out/main/index.js",
-  "author": "Bill",
+  "author": "CodingPlan.Site",
   "license": "MIT",
   "private": true,
   "scripts": {

scripts/release.cjs

@@ -200,21 +200,35 @@ async function giteaChannel() {
   for (const [f, name] of ordered) {
     const stat = fs.statSync(f)
     const url = `${base}/${encodeURIComponent(name)}`
-    const resp = await fetch(url, {
-      method: 'PUT',
-      headers: { Authorization: `token ${env.GIT_TOKEN}`, 'Content-Type': 'application/octet-stream', 'Content-Length': String(stat.size) },
-      body: fs.createReadStream(f),
-      duplex: 'half'
-    })
+    const put = async () =>
+      fetch(url, {
+        method: 'PUT',
+        headers: { Authorization: `token ${env.GIT_TOKEN}`, 'Content-Type': 'application/octet-stream', 'Content-Length': String(stat.size) },
+        body: fs.createReadStream(f),
+        duplex: 'half'
+      })
+    let resp = await put()
     console.log(`  put ${name}: HTTP ${resp.status}`)
+    if (!resp.ok && (resp.status === 409 || resp.status === 422)) {
+      if (/\d+\.\d+\.\d+/.test(name)) {
+        // Version-named payloads are immutable per release: accept a stored
+        // copy only when it has exactly the same size.
+        if ((await channelFileSize(url)) === stat.size) {
+          console.log(`  ${name} is already published with the same size, kept`)
+          continue
+        }
+      } else {
+        // latest.yml / release-notes.md change every release and the atomic
+        // flow no longer wipes the channel up front, so replace them in place.
+        // The swap window is one small file (sub-second), not the whole channel.
+        const del = await fetch(url, { method: 'DELETE', headers: { Authorization: `token ${env.GIT_TOKEN}` } })
+        console.log(`  delete old ${name}: HTTP ${del.status}`)
+        resp = await put()
+        console.log(`  put ${name}: HTTP ${resp.status}`)
+      }
+    }
     if (!resp.ok) {
       const detail = (await resp.text()).slice(0, 200)
-      // Re-publishing the same version can hit an already-stored file; accept it
-      // only when the stored copy has exactly the same size.
-      if ((resp.status === 409 || resp.status === 422) && (await channelFileSize(url)) === stat.size) {
-        console.log(`  ${name} is already published with the same size, kept`)
-        continue
-      }
       throw new Error(`channel put failed (${resp.status}) for ${name}: ${detail}`)
     }
   }

src/main/index.ts

@@ -1,6 +1,7 @@
-import { app, BrowserWindow, globalShortcut, nativeImage, shell } from 'electron'
+import { app, BrowserWindow, globalShortcut, net, nativeImage, protocol, shell } from 'electron'
 import { existsSync } from 'fs'
 import { join } from 'path'
+import { pathToFileURL } from 'url'
 import { isTrustedRendererUrl, registerIpc } from './ipc'
 import { killAllPtys, killPtysByOwner } from './pty'
 import { applyStartupSystemSettings, loadSettings } from './settingsStore'
@@ -45,6 +46,14 @@ if (!app.isPackaged) {
   app.setPath('userData', join(app.getPath('appData'), 'OpenTerminal-dev'))
 }
 
+// Custom background image (设置 → 主题): the renderer page cannot load file:
+// subresources directly (Chromium blocks them from non-file origins), so it
+// references them through this scheme instead. The handler serves exactly one
+// file — the configured background image — nothing else.
+protocol.registerSchemesAsPrivileged([
+  { scheme: 'otimg', privileges: { secure: true, supportFetchAPI: false, corsEnabled: false } }
+])
+
 // Single instance: a second launch just surfaces the existing window (pulls
 // it out of the tray if hidden there) instead of starting another process.
 // The refused instance skips the whole startup path: `app.quit()` only asks
@@ -57,6 +66,19 @@ if (!gotSingleInstanceLock) {
   app.on('second-instance', () => showOrCreate())
 
   app.whenReady().then(() => {
+    // Serve the configured background image (path lives in settings; anything
+    // else — including a path that is no longer configured — is refused, so the
+    // protocol cannot be used to read arbitrary files).
+    protocol.handle('otimg', (request) => {
+      const url = new URL(request.url)
+      const requested = decodeURIComponent(url.pathname.replace(/^\//, ''))
+      const allowed = loadSettings().terminal.backgroundImage
+      if (allowed === '' || requested !== allowed || !existsSync(requested)) {
+        return new Response('', { status: 403 })
+      }
+      return net.fetch(pathToFileURL(requested).toString())
+    })
+
     registerIpc()
     registerUpdateIpc()
     // Before the window exists: a renderer-triggered check must not run against
@@ -167,6 +189,18 @@ process.on('uncaughtException', (err) => {
   console.error('[main] uncaughtException:', err)
 })
 
+// Diagnostics for "app froze then recovered" reports: WER logs an
+// AppHangTransient but keeps no stack. A stall of THIS (UI) thread is what
+// Windows flags as a hang, so measure event-loop lag and say so loudly when
+// it happens — that distinguishes a main-process block from a renderer one.
+let lastTick = Date.now()
+setInterval(() => {
+  const now = Date.now()
+  const lag = now - lastTick - 1000
+  if (lag > 2000) console.error(`[main] event loop stalled ~${lag}ms`)
+  lastTick = now
+}, 1000).unref()
+
 app.on('before-quit', () => {
   // Let window 'close' events pass through so teardown completes.
   markQuitting()

src/main/settingsStore.ts

@@ -138,11 +138,15 @@ function sanitizeThemes(value: unknown, warnings: Warnings): TerminalTheme[] {
         : null
     const colors: ThemeColors = { ...DEFAULT_DARK.colors }
     const target = colors as unknown as Record<string, string>
+    const HEX_COLOR = /^#(?:[0-9a-f]{3}|[0-9a-f]{6}|[0-9a-f]{8})$/i
     for (const key of THEME_COLOR_KEYS) {
       const color = candidate?.[key]
-      if (typeof color === 'string' && color !== '') target[key] = color
-      else if (color !== undefined) {
-        warnings.push(`customThemes[${index}].colors.${key} repaired → built-in default`)
+      // Only well-formed hex colours survive: xterm would render anything else
+      // as black, and the theme editor's native colour input needs #rrggbb.
+      if (typeof color === 'string' && HEX_COLOR.test(color.trim())) {
+        target[key] = color.trim()
+      } else if (color !== undefined) {
+        warnings.push(`customThemes[${index}].colors.${key}: not a hex color — repaired`)
       }
     }
     themes.push({

src/renderer/index.html

@@ -5,7 +5,7 @@
     <title>OpenTerminal</title>
     <meta
       http-equiv="Content-Security-Policy"
-      content="default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; font-src 'self' data:"
+      content="default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; font-src 'self' data:; img-src 'self' file: data: otimg:"
     />
   </head>
   <body>

src/renderer/src/main.tsx

@@ -11,6 +11,19 @@ import { useSettingsStore } from './settings/store'
 import { mix } from './theme/chrome'
 import './global.css'
 
+// Diagnostics: report renderer main-thread freezes after recovery. console.error
+// is surfaced into the dev terminal by the main process's console-message hook,
+// so a "卡死又恢复" report tells us which process stalled and for how long.
+{
+  let lastTick = performance.now()
+  setInterval(() => {
+    const now = performance.now()
+    const lag = now - lastTick - 2000
+    if (lag > 3000) console.error(`[renderer] main thread stalled ~${Math.round(lag)}ms`)
+    lastTick = now
+  }, 2000)
+}
+
 // Dev convenience: allow opening the renderer in a plain browser (vite page)
 // so layout/UX work doesn't require the electron shell. No-op under electron.
 if (typeof window !== 'undefined' && !window.api) {

src/renderer/src/settings/ThemeSettingsTab.tsx

@@ -1,5 +1,5 @@
 import { useMemo } from 'react'
-import { Button, ColorPicker, Popconfirm } from 'antd'
+import { Button, ColorPicker, Popconfirm, Slider } from 'antd'
 import { t } from '@shared/i18n'
 import type { TerminalSettings } from '@shared/settings'
 import { DEFAULT_SETTINGS } from '@shared/settings'
@@ -46,8 +46,45 @@ export function ThemeSettingsTab({
     await setCustomThemes(next)
   }
 
+  const pickImage = async (): Promise<void> => {
+    const files = await window.api.pickFiles()
+    const image = files.find((f) => /\.(png|jpe?g|bmp|gif|webp|avif)$/i.test(f))
+    if (image) await updateTerminal({ backgroundImage: image })
+  }
+
   return (
     <div className="theme-pane">
+      <div className="theme-accent-row">
+        <div>
+          <div className="settings-block-label">{t('settings.theme.backgroundImage')}</div>
+          <div className="settings-block-hint">{t('settings.theme.backgroundImageDesc')}</div>
+        </div>
+        <div className="theme-accent-controls">
+          <Button size="small" onClick={() => void pickImage()}>
+            {t('settings.theme.chooseImage')}
+          </Button>
+          {settings.terminal.backgroundImage !== '' && (
+            <Button size="small" onClick={() => void updateTerminal({ backgroundImage: '' })}>
+              {t('settings.theme.clearImage')}
+            </Button>
+          )}
+        </div>
+      </div>
+      {settings.terminal.backgroundImage !== '' && (
+        <div className="theme-accent-row">
+          <div>
+            <div className="settings-block-label">{t('settings.theme.imageOpacity')}</div>
+          </div>
+          <Slider
+            style={{ width: 200 }}
+            min={10}
+            max={100}
+            step={5}
+            value={settings.terminal.backgroundImageOpacity}
+            onChange={(v) => void updateTerminal({ backgroundImageOpacity: v })}
+          />
+        </div>
+      )}
       <div className="theme-accent-row">
         <div>
           <div className="settings-block-label">{t('settings.theme.accent')}</div>

src/renderer/src/settings/settings.css

@@ -44,6 +44,13 @@
   background: color-mix(in srgb, var(--tab-accent, #3fb950) 16%, transparent);
 }
 
+/* antd paints the active tab label in the primary blue, which is hard to read
+   on the accent-tinted row; keep it identical to the inactive labels. The
+   extra .ant-tabs-tab class out-specifies antd's runtime-injected rule. */
+.settings-body .ant-tabs-left > .ant-tabs-nav .ant-tabs-tab.ant-tabs-tab-active .ant-tabs-tab-btn {
+  color: #ffffff;
+}
+
 .settings-body .ant-tabs-left > .ant-tabs-nav .ant-tabs-ink-bar {
   background: var(--tab-accent, #3fb950);
 }
@@ -575,3 +582,11 @@
 .shortcut-input.is-recording .ant-input {
   border-color: var(--tab-accent, #3fb950);
 }
+
+/* theme editor: duplicate-name notice under the name field */
+.theme-editor-hint {
+  margin: -4px 0 10px;
+  padding-left: 2px;
+  font-size: 12px;
+  color: #d29922;
+}

src/renderer/src/terminal/TerminalView.tsx

@@ -67,8 +67,20 @@ const SEARCH_DECORATIONS: NonNullable<NonNullable<Parameters<SearchAddon['findNe
 // xterm's default overviewRulerBorder (#7f7f7f) renders as a light vertical line
 // on the dark surface once scrollback exists. Force it transparent; search-match
 // marks in the ruler keep their own colors.
-function withChromeColors(colors: ITheme): ITheme {
-  return { ...colors, overviewRulerBorder: '#00000000' }
+function withChromeColors(colors: ITheme, transparentBackground: boolean): ITheme {
+  return {
+    ...colors,
+    overviewRulerBorder: '#00000000',
+    // While a custom background image is set the xterm surface goes fully
+    // transparent so the image layer behind the host is what shows through.
+    ...(transparentBackground ? { background: '#00000000' } : {})
+  }
+}
+
+/** URL for a background image, served by the main process's otimg:// handler
+ *  (the page itself cannot reference file: paths from non-file origins). */
+function toFileUrl(path: string): string {
+  return `otimg://bg/${encodeURIComponent(path)}`
 }
 
 export interface TerminalHandle {
@@ -673,8 +685,9 @@ export const TerminalView: ForwardRefExoticComponent<TerminalViewProps & { ref?:
       cursorBlink: tSettings.cursorBlink,
       cursorStyle: tSettings.cursorStyle,
       cursorInactiveStyle: tSettings.cursorInactiveStyle,
-      theme: withChromeColors(getThemeById(tSettings.themeId, settings.customThemes).colors as ITheme),
+      theme: withChromeColors(getThemeById(tSettings.themeId, settings.customThemes).colors as ITheme, Boolean(tSettings.backgroundImage)),
       allowProposedApi: true,
+      allowTransparency: true,
       overviewRuler: { width: 9, showTopBorder: false, showBottomBorder: false },
       drawBoldTextInBrightColors: true,
       minContrastRatio: 1,
@@ -1009,7 +1022,7 @@ export const TerminalView: ForwardRefExoticComponent<TerminalViewProps & { ref?:
     // Live-appliable in xterm 6: without this the setting only took effect for
     // terminals opened after the change, which reads as "the setting is broken".
     term.options.scrollback = tSettings.scrollback
-    term.options.theme = withChromeColors(getThemeById(tSettings.themeId, settings.customThemes).colors as ITheme)
+    term.options.theme = withChromeColors(getThemeById(tSettings.themeId, settings.customThemes).colors as ITheme, Boolean(tSettings.backgroundImage))
     scheduleFit()
   }, [tSettings, settings.customThemes, scheduleFit])
 
@@ -1048,7 +1061,13 @@ export const TerminalView: ForwardRefExoticComponent<TerminalViewProps & { ref?:
     [sessionId]
   )
 
-  const terminalClassName = useMemo(() => ['terminal-view', className].filter(Boolean).join(' '), [className])
+  const terminalClassName = useMemo(
+    () =>
+      ['terminal-view', settings.terminal.backgroundImage !== '' && 'has-bg-image', className]
+        .filter(Boolean)
+        .join(' '),
+    [className, settings.terminal.backgroundImage]
+  )
 
   /**
    * [M5] Compute and store the floating popup position so it hugs the text
@@ -1277,6 +1296,15 @@ export const TerminalView: ForwardRefExoticComponent<TerminalViewProps & { ref?:
           </div>
         )}
         <div className="terminal-view-dock" ref={hostRef}>
+          {settings.terminal.backgroundImage !== '' && (
+            <div
+              className="term-bg-image"
+              style={{
+                backgroundImage: `url("${toFileUrl(settings.terminal.backgroundImage)}")`,
+                opacity: Math.min(100, Math.max(10, settings.terminal.backgroundImageOpacity)) / 100
+              }}
+            />
+          )}
           {dead && (
             <div className="term-dead-mask">
               <div>{t('terminal.dead.message', { code: exitCode })}</div>

src/renderer/src/terminal/terminal.css

@@ -15,11 +15,17 @@
 
 /* xterm.css defaults .xterm-viewport to #000; when the pane height isn't a
    multiple of the cell height the leftover bottom strip shows that black.
-   Pin it to the (theme-derived) chrome background so the gap is invisible. */
-.terminal-view .xterm .xterm-viewport {
+   Pin it to the (theme-derived) chrome background so the gap is invisible.
+   With a custom background image the viewport must stay transparent — this
+   opaque layer would cover the .term-bg-image behind the xterm surface. */
+.terminal-view:not(.has-bg-image) .xterm .xterm-viewport {
   background-color: var(--chrome-bg);
 }
 
+.terminal-view.has-bg-image .xterm .xterm-viewport {
+  background-color: transparent;
+}
+
 /* Slim slate scrollbar for the xterm viewport — the native Windows one renders
    light track + arrow buttons that look broken on the dark surface. The thumb
    sits inset inside a wider grab lane (transparent border + padding-box clip)
@@ -353,6 +359,24 @@
   padding: 0;
 }
 
+/* ---- custom background image (设置 → 主题) ----
+   Sits behind the xterm screen; while an image is set the theme background is
+   transparent (allowTransparency), so this layer is what shows through. */
+.term-bg-image {
+  position: absolute;
+  inset: 0;
+  z-index: 0;
+  background-size: cover;
+  background-position: center;
+  background-repeat: no-repeat;
+  pointer-events: none;
+}
+
+.terminal-view-dock > .xterm {
+  position: relative;
+  z-index: 1;
+}
+
 /* ---- dead process overlay ---- */
 .term-dead-mask {
   position: absolute;

src/renderer/src/theme/editor/ThemeEditor.tsx

@@ -2,7 +2,7 @@ import { useEffect, useMemo, useState } from 'react'
 import { Input, Modal } from 'antd'
 import { t } from '@shared/i18n'
 import type { ThemeColors, TerminalTheme } from '@shared/theme'
-import { DEFAULT_DARK, getThemeById } from '@shared/theme'
+import { BUILTIN_THEMES, DEFAULT_DARK, getThemeById } from '@shared/theme'
 import { useSettingsStore } from '../../settings/store'
 
 export interface ThemeEditorProps {
@@ -49,6 +49,17 @@ const ANSI_KEYS: FieldSpec[] = [
   { key: 'brightWhite', label: 'Bright White' }
 ]
 
+/** The native colour input only accepts #rrggbb: clamp every seeded value so a
+ *  hand-edited or migrated theme can't render the picker as solid black. */
+function normalizeThemeColors(colors: ThemeColors, fallback: ThemeColors): ThemeColors {
+  const out = { ...fallback }
+  for (const key of Object.keys(fallback) as (keyof ThemeColors)[]) {
+    const value = colors[key] ?? ''
+    out[key] = /^#[0-9a-f]{6}$/i.test(value) ? value : (fallback[key] ?? '')
+  }
+  return out
+}
+
 export function ThemeEditor({ open, onClose, themeId }: ThemeEditorProps): React.JSX.Element {
   const settings = useSettingsStore((s) => s.settings)
   const updateTerminal = useSettingsStore((s) => s.updateTerminal)
@@ -64,6 +75,11 @@ export function ThemeEditor({ open, onClose, themeId }: ThemeEditorProps): React
   const [name, setName] = useState('')
   const [colors, setColors] = useState<ThemeColors>(DEFAULT_DARK.colors)
   const [saving, setSaving] = useState(false)
+  /** another theme (builtin or custom) already uses this name (allowed, but the user should know) */
+  const duplicateName =
+    name.trim() !== '' &&
+    (BUILTIN_THEMES.some((th) => th.name === name.trim()) ||
+      settings.customThemes.some((th) => th.id !== themeId && th.name === name.trim()))
 
   // (re)initialize the form each time the modal opens
   useEffect(() => {
@@ -75,12 +91,12 @@ export function ThemeEditor({ open, onClose, themeId }: ThemeEditorProps): React
         return
       }
       setName(editingTheme.name)
-      setColors({ ...editingTheme.colors })
+      setColors(normalizeThemeColors(editingTheme.colors, DEFAULT_DARK.colors))
     } else {
       /** create mode: seed a fresh copy based on the currently active theme */
       const active = getThemeById(settings.terminal.themeId, settings.customThemes)
       setName(active.name + t('settings.themeEditor.copySuffix'))
-      setColors({ ...active.colors })
+      setColors(normalizeThemeColors(active.colors, DEFAULT_DARK.colors))
     }
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [open])
@@ -141,6 +157,7 @@ export function ThemeEditor({ open, onClose, themeId }: ThemeEditorProps): React
             maxLength={60}
           />
         </div>
+        {duplicateName && <div className="theme-editor-hint">{t('settings.themeEditor.duplicateName')}</div>}
 
         <div className="theme-editor-colors">
           {headerKeys().map((spec) => (

src/shared/i18n/dicts/en/settings.ts

@@ -139,12 +139,18 @@ const settings: Record<string, string> = {
   'settings.highlight.builtin.url': 'Web links',
   'settings.theme.accent': 'Tab accent color',
   'settings.theme.accentDesc': 'Accent color for the active tab border, the sidebar indicator, and SSH badges',
+  'settings.theme.backgroundImage': 'Background image',
+  'settings.theme.backgroundImageDesc': 'Show an image behind the terminal; remove it to go back to a solid background',
+  'settings.theme.chooseImage': 'Choose image',
+  'settings.theme.clearImage': 'Remove',
+  'settings.theme.imageOpacity': 'Image opacity',
   'settings.theme.customBadge': 'Custom',
   'settings.theme.deleteTitle': 'Delete custom theme',
   'settings.theme.create': 'New theme',
   'settings.theme.editTitle': 'Edit theme',
   'settings.themeEditor.name': 'Name',
   'settings.themeEditor.namePlaceholder': 'Theme name',
+  'settings.themeEditor.duplicateName': 'Same name as another theme (saving is still allowed)',
   'settings.themeEditor.copySuffix': ' (copy)',
   'settings.about.currentVersion': 'Current version',
   'settings.about.statusIdle': 'Click to check for updates',

src/shared/i18n/dicts/ja/settings.ts

@@ -136,12 +136,18 @@ const settings: Record<string, string> = {
   'settings.highlight.builtin.url': 'ウェブリンク',
   'settings.theme.accent': 'タブのアクセントカラー',
   'settings.theme.accentDesc': 'アクティブなタブの枠線、サイドバーのインジケーター、SSH バッジのアクセントカラー',
+  'settings.theme.backgroundImage': '背景画像',
+  'settings.theme.backgroundImageDesc': 'ターミナルの背後に画像を表示します。削除すると無地の背景に戻ります',
+  'settings.theme.chooseImage': '画像を選択',
+  'settings.theme.clearImage': '削除',
+  'settings.theme.imageOpacity': '画像の不透明度',
   'settings.theme.customBadge': 'カスタム',
   'settings.theme.deleteTitle': 'カスタムテーマを削除',
   'settings.theme.create': '新しいテーマ',
   'settings.theme.editTitle': 'テーマを編集',
   'settings.themeEditor.name': '名前',
   'settings.themeEditor.namePlaceholder': 'テーマ名',
+  'settings.themeEditor.duplicateName': '他のテーマと同名です（保存は可能）',
   'settings.themeEditor.copySuffix': '（コピー）',
   'settings.about.currentVersion': '現在のバージョン',
   'settings.about.statusIdle': 'クリックして更新を確認',

src/shared/i18n/dicts/zh-CN/settings.ts

@@ -133,12 +133,18 @@ const settings: Record<string, string> = {
   'settings.highlight.builtin.url': '网址链接',
   'settings.theme.accent': '标签强调色',
   'settings.theme.accentDesc': '活动标签边框、侧栏指示条与 SSH 徽章的强调颜色',
+  'settings.theme.backgroundImage': '背景图片',
+  'settings.theme.backgroundImageDesc': '为终端设置一张背景图片；移除后恢复纯色背景',
+  'settings.theme.chooseImage': '选择图片',
+  'settings.theme.clearImage': '移除图片',
+  'settings.theme.imageOpacity': '图片不透明度',
   'settings.theme.customBadge': '自定义',
   'settings.theme.deleteTitle': '删除自定义主题',
   'settings.theme.create': '新建主题',
   'settings.theme.editTitle': '编辑主题',
   'settings.themeEditor.name': '名称',
   'settings.themeEditor.namePlaceholder': '主题名称',
+  'settings.themeEditor.duplicateName': '与其他主题重名，仍可保存',
   'settings.themeEditor.copySuffix': '（副本）',
   'settings.about.currentVersion': '当前版本',
   'settings.about.statusIdle': '点击检查更新',

src/shared/i18n/dicts/zh-TW/settings.ts

@@ -133,12 +133,18 @@ const settings: Record<string, string> = {
   'settings.highlight.builtin.url': '網址連結',
   'settings.theme.accent': '標籤強調色',
   'settings.theme.accentDesc': '作用中標籤的邊框、側邊欄指示條與 SSH 徽章的強調顏色',
+  'settings.theme.backgroundImage': '背景圖片',
+  'settings.theme.backgroundImageDesc': '為終端設定一張背景圖片；移除後恢復純色背景',
+  'settings.theme.chooseImage': '選擇圖片',
+  'settings.theme.clearImage': '移除圖片',
+  'settings.theme.imageOpacity': '圖片不透明度',
   'settings.theme.customBadge': '自訂',
   'settings.theme.deleteTitle': '刪除自訂主題',
   'settings.theme.create': '新增主題',
   'settings.theme.editTitle': '編輯主題',
   'settings.themeEditor.name': '名稱',
   'settings.themeEditor.namePlaceholder': '主題名稱',
+  'settings.themeEditor.duplicateName': '與其他主題同名，仍可儲存',
   'settings.themeEditor.copySuffix': '（副本）',
   'settings.about.currentVersion': '目前版本',
   'settings.about.statusIdle': '點擊檢查更新',

src/shared/settings.ts

@@ -49,6 +49,10 @@ export interface TerminalSettings {
   showOpenCwdButton: boolean
   /** accent color for the active tab outline, rail indicator and SSH badges */
   tabAccentColor: string
+  /** absolute path to an image rendered behind the terminal; '' = none */
+  backgroundImage: string
+  /** background image layer opacity, 10..100 (%) */
+  backgroundImageOpacity: number
 }
 
 export interface SystemSettings {
@@ -132,7 +136,9 @@ export const DEFAULT_SETTINGS: AppSettings = {
     showRecButton: false,
     showOpenLogsButton: false,
     showOpenCwdButton: true,
-    tabAccentColor: '#3fb950'
+    tabAccentColor: '#3fb950',
+    backgroundImage: '',
+    backgroundImageOpacity: 60
   },
   customThemes: [],
   highlightRules: DEFAULT_HIGHLIGHT_RULES,

website/README.md

@@ -0,0 +1,67 @@
+# OpenTerminal 官网
+
+OpenTerminal 的产品介绍站点，部署在 GitHub Pages。
+纯静态 HTML + CSS，**无构建步骤、无第三方依赖**，改完即可发布。
+
+## 线上地址
+
+- GitHub Pages: `https://billowliu2.github.io/OpenTerminal/`
+
+## 目录结构
+
+```
+website/
+├── index.html          # 单页站点：功能介绍 / 下载 / 更新日志
+├── .nojekyll           # 让 GitHub Pages 原样托管（跳过 Jekyll 处理）
+└── assets/
+    ├── style.css       # 全部样式（企业风浅色主题，单一强调色）
+    ├── shot-terminal.png   # 主界面截图（四路分屏）
+    ├── shot-themes.png     # 主题设置页截图
+    └── icon.png            # 应用图标（来自仓库 build/icon.png）
+```
+
+## 发新版本时需要更新的地方
+
+`index.html` 中搜索 `1.0.15`，共 3 处下载链接（hero 主按钮、下载表格 exe、msi）。
+下载链接使用 GitHub Releases 原生地址：
+
+```
+https://github.com/billowliu2/OpenTerminal/releases/download/v<版本>/OpenTerminal-<版本>-setup.exe
+https://github.com/billowliu2/OpenTerminal/releases/download/v<版本>/OpenTerminal-<版本>-setup.msi
+```
+
+注意：发布新版本时需同时把安装包资产上传到 GitHub release
+（`HTTPS_PROXY=http://127.0.0.1:7897 node scripts/release.cjs <版本> --skip-gitea`），
+否则直链 404。
+
+同时更新「近期更新」小节（与 RELEASE_NOTES.md 内容保持一致）和下载表格里的文件大小。
+
+## 部署方式
+
+GitHub Actions 工作流 `.github/workflows/deploy-website.yml`：
+push 到 `main` 且 `website/` 下有改动时，自动把 `website/` 目录发布到 GitHub Pages。
+Gitea（git.codingplan.site）只同步代码，Pages 由 GitHub 侧托管。
+
+首次部署需要在 GitHub 仓库设置里确认：Settings → Pages → Source 选择
+"GitHub Actions"（工作流已声明 `pages: write` 与 `id-token: write` 权限）。
+
+## 本地预览
+
+无构建步骤，任选其一：
+
+```bash
+# Python
+python -m http.server 8080 --directory website
+
+# Node
+npx serve website
+```
+
+然后访问 `http://localhost:8080`。直接双击 `index.html` 也可以（无跨域资源）。
+
+## 设计约定
+
+- 浅色企业风，避免营销站常见的霓虹/渐变装饰
+- 强调色仅一个：`#1a7f37`（应用品牌绿 #3fb950 的深色化，保证浅底对比度 ≥ 4.5:1）
+- 截图来自真实运行界面，与应用内设置一致
+- 中文为主要语言；字体使用系统栈（Segoe UI / 微软雅黑），不加载外部字体

website/assets/style.css

@@ -0,0 +1,364 @@
+/* OpenTerminal 官网 - 企业风浅色主题
+   单一强调色: 品牌绿 #1a7f37 (深化的 #3fb950, 保证浅底对比度)
+   无渐变 / 无发光 / 无装饰性动画, 仅保留 hover 与 focus 反馈 */
+
+:root {
+  --bg: #ffffff;
+  --bg-soft: #f7f8f8;
+  --text: #1c2128;
+  --text-2: #57606a;
+  --border: #d9dee3;
+  --accent: #1a7f37;
+  --accent-hover: #116329;
+  --radius: 8px;
+  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Consolas, monospace;
+}
+
+* { box-sizing: border-box; margin: 0; padding: 0; }
+
+html { scroll-behavior: smooth; }
+
+body {
+  font-family: "Segoe UI", "Microsoft YaHei", -apple-system, "PingFang SC", "Noto Sans SC", sans-serif;
+  font-size: 16px;
+  line-height: 1.6;
+  color: var(--text);
+  background: var(--bg);
+  -webkit-font-smoothing: antialiased;
+}
+
+.container {
+  max-width: 1120px;
+  margin: 0 auto;
+  padding: 0 24px;
+}
+
+.mono { font-family: var(--mono); font-size: 0.92em; }
+
+/* ---- nav ---- */
+.site-nav {
+  position: sticky;
+  top: 0;
+  z-index: 10;
+  background: rgba(255, 255, 255, 0.94);
+  border-bottom: 1px solid var(--border);
+}
+
+.nav-inner {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  height: 64px;
+}
+
+.brand {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  font-weight: 600;
+  font-size: 17px;
+  color: var(--text);
+  text-decoration: none;
+}
+
+.nav-links { display: flex; gap: 28px; }
+
+.nav-links a {
+  color: var(--text-2);
+  text-decoration: none;
+  font-size: 15px;
+}
+
+.nav-links a:hover { color: var(--text); }
+
+/* ---- hero ---- */
+.hero {
+  padding: 72px 0 0;
+  background: var(--bg-soft);
+  border-bottom: 1px solid var(--border);
+}
+
+.hero-grid {
+  display: grid;
+  grid-template-columns: 1fr 1.2fr;
+  gap: 48px;
+  align-items: center;
+}
+
+.hero-kicker {
+  font-size: 14px;
+  color: var(--text-2);
+  margin-bottom: 16px;
+}
+
+.hero h1 {
+  font-size: 36px;
+  line-height: 1.25;
+  letter-spacing: -0.02em;
+  font-weight: 650;
+}
+
+.hero-sub {
+  margin-top: 20px;
+  max-width: 46ch;
+  color: var(--text-2);
+  font-size: 17px;
+}
+
+.hero-actions {
+  display: flex;
+  gap: 12px;
+  margin-top: 28px;
+  flex-wrap: wrap;
+}
+
+.btn {
+  display: inline-block;
+  padding: 10px 22px;
+  border-radius: var(--radius);
+  font-size: 15px;
+  font-weight: 600;
+  text-decoration: none;
+  border: 1px solid transparent;
+}
+
+.btn:active { transform: translateY(1px); }
+
+.btn-primary {
+  background: var(--accent);
+  color: #ffffff;
+}
+
+.btn-primary:hover { background: var(--accent-hover); }
+
+.btn-ghost {
+  color: var(--text);
+  border-color: var(--border);
+  background: var(--bg);
+}
+
+.btn-ghost:hover { border-color: var(--text-2); }
+
+.hero-note {
+  margin-top: 14px;
+  font-size: 13px;
+  color: var(--text-2);
+}
+
+.hero-shot {
+  min-width: 0;
+}
+
+.hero-shot img {
+  display: block;
+  width: 100%;
+  height: auto;
+  border: 1px solid var(--border);
+  border-radius: var(--radius);
+  box-shadow: 0 8px 24px rgba(28, 33, 40, 0.10);
+}
+
+.hero-shot figcaption {
+  margin-top: 10px;
+  font-size: 13px;
+  color: var(--text-2);
+  text-align: center;
+}
+
+.spec-strip {
+  display: flex;
+  gap: 32px;
+  flex-wrap: wrap;
+  padding-top: 40px;
+  padding-bottom: 40px;
+  font-size: 14px;
+  color: var(--text-2);
+}
+
+.spec-strip strong { color: var(--text); font-weight: 600; }
+
+/* ---- features ---- */
+.features { padding: 72px 0; }
+
+.features h2, .download h2, .changelog h2 {
+  font-size: 28px;
+  font-weight: 650;
+  letter-spacing: -0.01em;
+}
+
+.section-sub {
+  margin-top: 10px;
+  color: var(--text-2);
+  max-width: 60ch;
+}
+
+.feature-row {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 64px;
+  margin-top: 48px;
+}
+
+.media-row {
+  grid-template-columns: 7fr 5fr;
+  align-items: center;
+  gap: 56px;
+}
+
+.feature-copy h3 {
+  font-size: 20px;
+  font-weight: 650;
+  margin-bottom: 16px;
+}
+
+.feature-copy ul {
+  list-style: none;
+  display: grid;
+  gap: 10px;
+}
+
+.feature-copy li {
+  padding-left: 18px;
+  position: relative;
+  color: var(--text-2);
+  font-size: 15px;
+}
+
+.feature-copy li::before {
+  content: "";
+  position: absolute;
+  left: 0;
+  top: 0.62em;
+  width: 6px;
+  height: 2px;
+  background: var(--accent);
+}
+
+.feature-shot img {
+  display: block;
+  width: 100%;
+  height: auto;
+  border: 1px solid var(--border);
+  border-radius: var(--radius);
+  box-shadow: 0 6px 18px rgba(28, 33, 40, 0.08);
+}
+
+/* ---- download ---- */
+.download {
+  padding: 72px 0;
+  background: var(--bg-soft);
+  border-top: 1px solid var(--border);
+  border-bottom: 1px solid var(--border);
+}
+
+.dl-table {
+  width: 100%;
+  border-collapse: collapse;
+  margin-top: 40px;
+  background: var(--bg);
+  border: 1px solid var(--border);
+  border-radius: var(--radius);
+  overflow: hidden;
+  font-size: 14.5px;
+}
+
+.dl-table th, .dl-table td {
+  text-align: left;
+  padding: 14px 18px;
+  vertical-align: top;
+}
+
+.dl-table thead th {
+  background: var(--bg-soft);
+  color: var(--text-2);
+  font-weight: 600;
+  font-size: 13px;
+}
+
+.dl-table tbody tr + tr td { border-top: 1px solid var(--border); }
+
+.dl-table a { color: var(--accent); text-decoration: none; font-weight: 600; }
+.dl-table a:hover { text-decoration: underline; }
+
+.dl-table .sep { color: var(--border); margin: 0 8px; }
+
+.update-note { margin-top: 40px; max-width: 72ch; }
+
+.update-note h3 { font-size: 16px; margin-bottom: 8px; }
+
+.update-note p { color: var(--text-2); font-size: 14.5px; }
+
+/* ---- changelog ---- */
+.changelog { padding: 72px 0; }
+
+.changelog-list {
+  display: grid;
+  grid-template-columns: repeat(3, 1fr);
+  gap: 48px;
+  margin-top: 40px;
+}
+
+.changelog-list article h3 {
+  font-size: 15px;
+  font-weight: 600;
+  margin-bottom: 12px;
+}
+
+.changelog-list article h3 .mono {
+  color: var(--text);
+  margin-right: 8px;
+}
+
+.changelog-list ul {
+  list-style: none;
+  display: grid;
+  gap: 8px;
+}
+
+.changelog-list li {
+  font-size: 14px;
+  color: var(--text-2);
+}
+
+.changelog-more {
+  margin-top: 40px;
+  font-size: 14px;
+  color: var(--text-2);
+}
+
+.changelog-more a { color: var(--accent); }
+
+/* ---- footer ---- */
+.site-footer {
+  border-top: 1px solid var(--border);
+  padding: 28px 0;
+  font-size: 13.5px;
+  color: var(--text-2);
+}
+
+.footer-inner {
+  display: flex;
+  justify-content: space-between;
+  gap: 16px;
+  flex-wrap: wrap;
+}
+
+/* ---- responsive ---- */
+@media (max-width: 960px) {
+  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
+  .hero { padding-top: 48px; }
+  .feature-row, .media-row { grid-template-columns: 1fr; gap: 32px; }
+  .media-row .feature-shot { order: -1; }
+  .changelog-list { grid-template-columns: 1fr; gap: 32px; }
+}
+
+@media (max-width: 640px) {
+  .nav-links { gap: 16px; }
+  .nav-links a { font-size: 14px; }
+  .hero h1 { font-size: 30px; }
+  .dl-table { display: block; overflow-x: auto; white-space: nowrap; }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  html { scroll-behavior: auto; }
+}

website/index.html

@@ -0,0 +1,201 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+  <meta charset="UTF-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+  <title>OpenTerminal - 本地终端 / SSH / SFTP 桌面终端，开源 Windows 终端工具</title>
+  <meta name="description" content="OpenTerminal 是开源的 Windows 桌面终端：本地终端、SSH 远程会话、SFTP 文件管理、分屏与广播输入、主题定制。MIT 协议，支持自动更新。" />
+  <link rel="icon" type="image/png" href="assets/icon.png" />
+  <link rel="stylesheet" href="assets/style.css" />
+</head>
+<body>
+
+  <header class="site-nav">
+    <div class="container nav-inner">
+      <a class="brand" href="#top">
+        <img src="assets/icon.png" alt="OpenTerminal 图标" width="24" height="24" />
+        <span>OpenTerminal</span>
+      </a>
+      <nav class="nav-links">
+        <a href="#features">功能</a>
+        <a href="#download">下载</a>
+        <a href="#changelog">更新日志</a>
+        <a href="https://github.com/billowliu2/OpenTerminal" target="_blank" rel="noopener">GitHub</a>
+      </nav>
+    </div>
+  </header>
+
+  <main id="top">
+
+    <section class="hero">
+      <div class="container hero-grid">
+        <div class="hero-copy">
+          <p class="hero-kicker">开源桌面终端 · MIT 协议</p>
+          <h1>本地终端、SSH 与 SFTP<br />装进同一个桌面应用</h1>
+          <p class="hero-sub">
+            OpenTerminal 面向开发和运维场景：WebGL 加速的终端渲染、可分屏的 SSH 会话、
+            内置 SFTP 文件管理与广播输入。安装即用，支持自动更新。
+          </p>
+          <div class="hero-actions">
+            <a class="btn btn-primary" id="dl-exe" href="https://github.com/billowliu2/OpenTerminal/releases/download/v1.0.15/OpenTerminal-1.0.15-setup.exe">
+              下载 Windows 安装包
+            </a>
+            <a class="btn btn-ghost" href="https://github.com/billowliu2/OpenTerminal" target="_blank" rel="noopener">
+              查看源码
+            </a>
+          </div>
+          <p class="hero-note">当前版本 v1.0.15 · 提供 exe 与 msi 安装包。</p>
+        </div>
+        <figure class="hero-shot">
+          <img src="assets/shot-terminal.png" alt="OpenTerminal 主界面：四个分屏终端会话" width="1282" height="801" />
+          <figcaption>四路分屏会话，每路独立连接本地或远程主机</figcaption>
+        </figure>
+      </div>
+      <div class="container spec-strip">
+        <span>当前版本 <strong class="mono">1.0.15</strong></span>
+        <span>Windows 10 / 11 · x64</span>
+        <span>MIT 开源协议</span>
+        <span>exe 支持应用内自动更新</span>
+      </div>
+    </section>
+
+    <section class="features" id="features">
+      <div class="container">
+        <h2>核心能力</h2>
+        <p class="section-sub">按使用场景划分的三组功能，全部能力见仓库 README。</p>
+
+        <div class="feature-row">
+          <div class="feature-copy">
+            <h3>终端核心</h3>
+            <ul>
+              <li>node-pty 本地会话，自动探测 PowerShell / zsh / bash</li>
+              <li>xterm.js WebGL 渲染，声明 256 色与真彩能力，异常时自动降级</li>
+              <li>内嵌搜索（Ctrl+F）、命令历史、粘贴风险确认</li>
+              <li>关键词高亮：内置 11 条规则（错误状态、路径、IP、URL 等），支持自定义正则</li>
+              <li>字体、字重、字距、行高、光标样式实时生效</li>
+            </ul>
+          </div>
+          <div class="feature-copy">
+            <h3>SSH 与 SFTP</h3>
+            <ul>
+              <li>ssh2 实现：密码、私钥（文件或粘贴内容）、SSH Agent 三种认证</li>
+              <li>多路分屏与广播输入，一次操作下发到多台主机</li>
+              <li>SFTP 文件面板：上传下载、同名覆盖确认、chmod / chown 权限编辑</li>
+              <li>ZMODEM 传输支持；主机指纹校验与首次连接确认</li>
+              <li>目录记忆：OSC 7 上报工作目录，新会话按上次位置恢复</li>
+            </ul>
+          </div>
+        </div>
+
+        <div class="feature-row media-row">
+          <figure class="feature-shot">
+            <img src="assets/shot-themes.png" alt="OpenTerminal 主题设置：主题画廊与背景图片配置" width="1282" height="801" />
+          </figure>
+          <div class="feature-copy">
+            <h3>定制与效率</h3>
+            <ul>
+              <li>主题编辑器：22 个颜色位逐项调整，实时预览；支持自定义背景图片与不透明度</li>
+              <li>内置 13 套主题，跟随系统明暗自动切换</li>
+              <li>命令库：保存常用命令片段，跨会话发送到指定终端</li>
+              <li>启动恢复上次会话布局；界面缩放 50% 至 150%</li>
+              <li>四语言界面：简体中文、繁体中文、English、日本語</li>
+            </ul>
+          </div>
+        </div>
+      </div>
+    </section>
+
+    <section class="download" id="download">
+      <div class="container">
+        <h2>下载</h2>
+        <p class="section-sub">
+          从 GitHub Releases 下载；全部历史版本在同一页面。
+          <!-- 发新版本时更新下方两条直链与 hero 的 id=dl-exe 链接 -->
+        </p>
+        <table class="dl-table">
+          <thead>
+            <tr><th>安装包</th><th>适用场景</th><th>大小</th><th>链接</th></tr>
+          </thead>
+          <tbody>
+            <tr>
+              <td class="mono">OpenTerminal-1.0.15-setup.exe</td>
+              <td>常规安装，支持应用内自动更新（推荐）</td>
+              <td class="mono">122 MB</td>
+              <td>
+                <a href="https://github.com/billowliu2/OpenTerminal/releases/download/v1.0.15/OpenTerminal-1.0.15-setup.exe">下载</a>
+              </td>
+            </tr>
+            <tr>
+              <td class="mono">OpenTerminal-1.0.15-setup.msi</td>
+              <td>企业批量部署（MSI 无自动更新，需手动升级）</td>
+              <td class="mono">135 MB</td>
+              <td>
+                <a href="https://github.com/billowliu2/OpenTerminal/releases/download/v1.0.15/OpenTerminal-1.0.15-setup.msi">下载</a>
+              </td>
+            </tr>
+            <tr>
+              <td class="mono">历史版本</td>
+              <td>全部发布记录与更新说明</td>
+              <td class="mono">-</td>
+              <td>
+                <a href="https://github.com/billowliu2/OpenTerminal/releases" target="_blank" rel="noopener">releases 列表</a>
+              </td>
+            </tr>
+          </tbody>
+        </table>
+
+        <div class="update-note">
+          <h3>自动更新说明</h3>
+          <p>
+            应用内检查更新优先访问 git.codingplan.site 更新通道，失败时回退 GitHub Releases。
+            更新包经 SHA-512 校验后安装。更新说明文字从发布通道的 release-notes.md 读取，与每次发布同步更新。
+          </p>
+        </div>
+      </div>
+    </section>
+
+    <section class="changelog" id="changelog">
+      <div class="container">
+        <h2>近期更新</h2>
+        <div class="changelog-list">
+          <article>
+            <h3><span class="mono">1.0.15</span> 2026-09-20</h3>
+            <ul>
+              <li>新增自定义终端背景图片与图片不透明度设置</li>
+              <li>主题编辑器重名提醒与颜色值校验</li>
+              <li>设置导航选中项文字对比度修复</li>
+            </ul>
+          </article>
+          <article>
+            <h3><span class="mono">1.0.14</span> 2026-09-20</h3>
+            <ul>
+              <li>修复大文件（约 250KB 以上）上传损坏与 SFTP 句柄泄漏</li>
+              <li>SSH 中文乱码、命令历史错乱等终端修复</li>
+              <li>权限编辑、连接错误提示等 20 余项修复</li>
+            </ul>
+          </article>
+          <article>
+            <h3><span class="mono">1.0.13</span> 2026-09-20</h3>
+            <ul>
+              <li>命令片段库与广播输入改进</li>
+              <li>监控面板历史曲线实时重绘</li>
+            </ul>
+          </article>
+        </div>
+        <p class="changelog-more">
+          完整日志见仓库 <a href="https://github.com/billowliu2/OpenTerminal/blob/main/CHANGELOG.md" target="_blank" rel="noopener">CHANGELOG.md</a>。
+        </p>
+      </div>
+    </section>
+
+  </main>
+
+  <footer class="site-footer">
+    <div class="container footer-inner">
+      <span>© 2026 CodingPlan.Site · OpenTerminal 以 MIT 协议开源</span>
+      <span class="mono">更新通道：git.codingplan.site</span>
+    </div>
+  </footer>
+
+</body>
+</html>