feat: remove HTML-Markdown conversion features (htmlToMarkdown & markdownToHtml)

Removed both conversion tools and all related code:
- Deleted page components: HtmlToMarkdown, MarkdownToHtml
- Deleted utility functions: htmlToMarkdown.ts, markdownToHtml.ts
- Deleted unit tests for both utilities
- Removed feature configs and PageType entries from storage.d.ts
- Removed preview mode types and StorageSchema keys
- Removed all i18n translation keys from messages.json
- Removed vendor-markdown chunk from wxt.config.ts
- Removed marked dependency from package.json
- Updated feature count in tests (11 -> 9, page order 10 -> 8)
- Updated README, AGENTS.md, and copilot-instructions.md

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/pages/HtmlToMarkdown/index.tsx

@@ -1,177 +0,0 @@
-import { useCallback, useMemo, useState } from 'react';
-import { Download, Trash2 } from 'lucide-react';
-import { useI18n } from '@/utils/chromeI18n';
-import CopyButton from '@/components/CopyButton';
-import SwitchButtonGroup from '@/components/SwitchButtonGroup';
-import { Button } from '@/components/ui/button';
-import { useStorageState } from '@/utils/useStorageState';
-import type { HtmlToMarkdownPreviewMode } from '@/types/storage';
-import { downloadMarkdownFile, htmlToMarkdown, SAMPLE_HTML } from '@/utils/htmlToMarkdown';
-import { cn } from '@/lib/utils';
-
-const isValidPreviewMode = (val: unknown): val is HtmlToMarkdownPreviewMode =>
-  typeof val === 'string' && ['split', 'preview', 'markdown'].includes(val);
-
-export default function HtmlToMarkdownPage() {
-  const { t } = useI18n('htmlToMarkdown');
-  const [previewMode, setPreviewMode] = useStorageState(
-    'htmlToMarkdown/previewMode',
-    'split' as HtmlToMarkdownPreviewMode,
-    isValidPreviewMode,
-  );
-  const [html, setHtml] = useState(SAMPLE_HTML);
-
-  const result = useMemo(() => htmlToMarkdown(html), [html]);
-  const error = result.hasError ? (result.error ?? null) : null;
-
-  const handleModeChange = useCallback(
-    (newMode: HtmlToMarkdownPreviewMode) => {
-      setPreviewMode(newMode);
-    },
-    [setPreviewMode],
-  );
-
-  const handleClear = useCallback(() => {
-    setHtml('');
-  }, []);
-
-  const handleDownload = useCallback(() => {
-    if (result.markdown) {
-      downloadMarkdownFile(result.markdown, 'converted.md');
-    }
-  }, [result.markdown]);
-
-  const showInput = previewMode !== 'preview';
-  const showOutput = previewMode !== 'markdown';
-
-  return (
-    /* 💡 统一间距尺寸：
-      - 彻底清除多余的 container max-w-7xl 这种网页大边距，
-      - 统一收拢为我们先前在 Dashboard 页、JSON 工具箱制定的 p-4 space-y-4 标准极客桌面规格。
-    */
-    <div className="p-4 w-full flex flex-col space-y-4 select-none">
-      <div className="flex flex-col gap-4">
-        {/* 工具栏集成区 */}
-        <div className="flex flex-col sm:flex-row gap-3 justify-between items-stretch sm:items-center bg-secondary/40 rounded-xl border border-border/60 px-1.5 py-1.5 sm:h-12">
-          <SwitchButtonGroup
-            value={previewMode}
-            options={[
-              { value: 'split', label: t('splitMode') },
-              { value: 'preview', label: t('previewMode') },
-              { value: 'markdown', label: t('markdownMode') },
-            ]}
-            onChange={handleModeChange}
-            size="small"
-            className="w-full sm:w-auto"
-          />
-
-          <div className="flex gap-2 shrink-0">
-            {/* 2. 重塑下载按钮：接入受控 Button，追加 active 物理微缩放动效 */}
-            <Button
-              variant="outline"
-              size="sm"
-              onClick={handleDownload}
-              disabled={!result.markdown}
-              className="h-8 rounded-md font-medium text-xs gap-1.5 shadow-sm"
-            >
-              <Download className="h-3.5 w-3.5" />
-              {t('download')}
-            </Button>
-
-            {/* 重塑清空按钮 */}
-            <Button
-              variant="outline"
-              size="sm"
-              onClick={handleClear}
-              className="h-8 rounded-md font-medium text-xs gap-1.5 shadow-sm text-destructive hover:text-destructive hover:bg-destructive/5 dark:hover:bg-destructive/10 border-input/60"
-            >
-              <Trash2 className="h-3.5 w-3.5" />
-              {t('clear')}
-            </Button>
-          </div>
-        </div>
-
-        {/* 错误提示：
-          - 💡 核心修复点：将硬编码的 bg-red-50 实色，完美超进化为系统的全自适应透明色变体
-        */}
-        {error && (
-          <div className="p-3.5 bg-destructive/10 border border-destructive/20 rounded-xl text-destructive text-xs font-semibold tracking-wide">
-            {error}
-          </div>
-        )}
-
-        {/* 双翼/单栏联动面板展示区 */}
-        <div
-          className={cn(
-            'grid gap-4 min-h-[460px] w-full',
-            showInput && showOutput ? 'grid-cols-1 md:grid-cols-2' : 'grid-cols-1',
-          )}
-        >
-          {/* HTML 输入端卡片面板 */}
-          {showInput && (
-            /* 3. 智能聚焦框联动（Focus Ring Clamping）：
-              - 外层容器追加 focus-within 变量追踪大闸。
-              - 只要用户用鼠标点击了内部的 textarea，外层整块精巧的圆角大边框会一帧内亮起 primary 系统的深色呼吸发光环，
-              - 这种“全外包裹层框聚焦”的体验极大模仿了本地原生 IDE 的硬核专业体验！
-            */
-            <div className="border border-border rounded-xl bg-card text-card-foreground shadow-sm overflow-hidden flex flex-col focus-within:ring-1 focus-within:ring-ring focus-within:border-ring">
-              {/* 卡片头部：改用标准的灰色 bg-muted/50 */}
-              <div className="flex h-9 items-center justify-between px-4 bg-muted/50 border-b border-border select-none">
-                <span className="text-[10px] font-bold text-muted-foreground/90 uppercase tracking-wider">
-                  {t('inputLabel')}
-                </span>
-                <span className="text-[10px] font-mono text-muted-foreground/60 tabular-nums">
-                  {t('charCount', { count: html.length })}
-                </span>
-              </div>
-              <textarea
-                value={html}
-                onChange={(e) => setHtml(e.target.value)}
-                placeholder={t('inputPlaceholder')}
-                className="flex-1 min-h-[380px] p-4 bg-transparent font-mono text-xs leading-relaxed resize-none focus:outline-none text-foreground/90 select-text"
-              />
-            </div>
-          )}
-
-          {/* Markdown 输出端卡片面板 */}
-          {showOutput && (
-            <div className="border border-border rounded-xl bg-card text-card-foreground shadow-sm overflow-hidden flex flex-col">
-              <div className="flex h-9 items-center justify-between px-4 bg-muted/50 border-b border-border select-none">
-                <span className="text-[10px] font-bold text-muted-foreground/90 uppercase tracking-wider">
-                  {(previewMode as string) === 'markdown'
-                    ? t('markdownOutputLabel')
-                    : t('previewLabel')}
-                </span>
-                <div className="flex items-center gap-2">
-                  <span className="text-[10px] font-mono text-muted-foreground/60 tabular-nums">
-                    {t('charCount', { count: result.markdownLength })}
-                  </span>
-                  <CopyButton
-                    text={result.markdown}
-                    className="h-6 w-6 rounded-md border text-muted-foreground"
-                  />
-                </div>
-              </div>
-
-              {(previewMode as string) === 'markdown' ? (
-                <textarea
-                  value={result.markdown}
-                  readOnly
-                  className="flex-1 min-h-[380px] p-4 font-mono text-xs leading-relaxed resize-none focus:outline-none bg-muted/30 dark:bg-muted/10 text-foreground/80 select-text"
-                />
-              ) : (
-                <div className="flex-1 p-4 min-h-[380px] overflow-auto bg-transparent font-mono text-xs leading-relaxed whitespace-pre-wrap break-all text-foreground/90 select-text">
-                  {result.markdown || (
-                    <span className="text-muted-foreground/70 italic text-[11px] font-sans">
-                      {t('emptyHint')}
-                    </span>
-                  )}
-                </div>
-              )}
-            </div>
-          )}
-        </div>
-      </div>
-    </div>
-  );
-}

src/pages/MarkdownToHtml/index.tsx

@@ -1,302 +0,0 @@
-import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
-import { Download, Printer, Trash2 } from 'lucide-react';
-import { useI18n } from '@/utils/chromeI18n';
-import CopyButton from '@/components/CopyButton';
-import SwitchButtonGroup from '@/components/SwitchButtonGroup';
-import { Button } from '@/components/ui/button';
-import { useStorageState } from '@/utils/useStorageState';
-import type { MarkdownToHtmlPreviewMode } from '@/types/storage';
-import {
-  downloadHtmlFile,
-  markdownToHtml,
-  printHtml,
-  SAMPLE_MARKDOWN,
-  wrapHtmlDocument,
-} from '@/utils/markdownToHtml';
-import { cn } from '@/lib/utils';
-
-const isValidPreviewMode = (val: unknown): val is MarkdownToHtmlPreviewMode =>
-  typeof val === 'string' && ['split', 'preview', 'html'].includes(val);
-
-const PREVIEW_STYLES = `
-  .markdown-body {
-    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
-    line-height: 1.6;
-    color: var(--md-foreground);
-    background-color: transparent;
-    font-size: 14px;
-  }
-  .markdown-body h1, .markdown-body h2, .markdown-body h3 {
-    margin-top: 24px;
-    margin-bottom: 16px;
-    font-weight: 600;
-    line-height: 1.25;
-    color: var(--md-foreground);
-  }
-  .markdown-body h1 { border-bottom: 1px solid var(--md-border); padding-bottom: 0.3em; font-size: 1.6em; }
-  .markdown-body h2 { border-bottom: 1px solid var(--md-border); padding-bottom: 0.3em; font-size: 1.35em; }
-  .markdown-body p { margin-top: 0; margin-bottom: 16px; }
-  .markdown-body a { color: var(--md-link-color); text-decoration: none; }
-  .markdown-body a:hover { text-decoration: underline; }
-  .markdown-body code {
-    background-color: var(--md-code-bg);
-    border-radius: 4px;
-    font-size: 85%;
-    padding: 0.2em 0.4em;
-    font-family: Menlo, Consolas, monospace;
-  }
-  .markdown-body pre {
-    background-color: var(--md-pre-bg);
-    border-radius: 8px;
-    font-size: 85%;
-    line-height: 1.45;
-    overflow: auto;
-    padding: 16px;
-    margin: 0 0 16px;
-    border: 1px solid var(--md-border);
-  }
-  .markdown-body pre code {
-    background-color: transparent;
-    border: 0;
-    padding: 0;
-  }
-  .markdown-body blockquote {
-    border-left: 0.25em solid var(--md-quote-line);
-    color: var(--md-muted);
-    margin: 0 0 16px;
-    padding: 0 1em;
-  }
-  .markdown-body table {
-    border-collapse: collapse;
-    width: 100%;
-    margin-bottom: 16px;
-    font-size: 13px;
-  }
-  .markdown-body table th, .markdown-body table td {
-    border: 1px solid var(--md-border);
-    padding: 6px 13px;
-  }
-  .markdown-body table tr:nth-child(2n) { background-color: var(--md-code-bg); }
-  .markdown-body table th { font-weight: 600; background-color: var(--md-code-bg); }
-`;
-
-export default function MarkdownToHtmlPage() {
-  const { t } = useI18n('markdownToHtml');
-  const [previewMode, setPreviewMode] = useStorageState(
-    'markdownToHtml/previewMode',
-    'split' as MarkdownToHtmlPreviewMode,
-    isValidPreviewMode,
-  );
-  const [markdown, setMarkdown] = useState(SAMPLE_MARKDOWN);
-  const iframeRef = useRef<HTMLIFrameElement>(null);
-
-  const result = useMemo(() => markdownToHtml(markdown), [markdown]);
-  const error = result.hasError ? (result.error ?? null) : null;
-
-  useEffect(() => {
-    const iframe = iframeRef.current;
-    if (!iframe) return;
-
-    const isDarkMode = document.documentElement.classList.contains('dark');
-
-    const themeVariables = isDarkMode
-      ? `:root { 
-          --md-bg: #090d16;
-          --md-foreground: #e6edf3; 
-          --md-border: rgba(255,255,255,0.15); 
-          --md-code-bg: rgba(255,255,255,0.12); 
-          --md-pre-bg: rgba(255,255,255,0.04); 
-          --md-muted: #8b949e;
-          --md-quote-line: rgba(255,255,255,0.25);
-          --md-link-color: #58a6ff;
-        }`
-      : `:root { 
-          --md-bg: #ffffff;
-          --md-foreground: #1f2328; 
-          --md-border: rgba(128,128,128,0.2); 
-          --md-code-bg: rgba(128,128,128,0.08); 
-          --md-pre-bg: rgba(128,128,128,0.03); 
-          --md-muted: #4b5563;
-          --md-quote-line: rgba(128,128,128,0.3);
-          --md-link-color: #3b82f6;
-        }`;
-
-    const baseGlobalStyles = `
-      html, body { 
-        margin: 0; 
-        padding: 0;
-        width: 100%;
-        height: 100%;
-        background-color: var(--md-bg);
-        color: var(--md-foreground);
-      }
-      body {
-        padding: 16px;
-        box-sizing: border-box;
-      }
-    `;
-
-    iframe.srcdoc = `<!DOCTYPE html>
-<html lang="zh" style="background-color: ${isDarkMode ? '#090d16' : '#ffffff'};">
-<head>
-<meta charset="UTF-8">
-<style>
-  ${themeVariables}
-  ${PREVIEW_STYLES}
-  ${baseGlobalStyles}
-</style>
-</head>
-<body class="markdown-body">${result.html}</body>
-</html>`;
-  }, [result.html, previewMode]);
-
-  const handleModeChange = useCallback(
-    (newMode: MarkdownToHtmlPreviewMode) => {
-      setPreviewMode(newMode);
-    },
-    [setPreviewMode],
-  );
-
-  const handleClear = useCallback(() => {
-    setMarkdown('');
-  }, []);
-
-  const handlePrint = useCallback(() => {
-    printHtml(result.html, t('pageTitle'));
-  }, [result.html, t]);
-
-  const handleDownload = useCallback(() => {
-    const doc = wrapHtmlDocument(result.html, t('pageTitle'));
-    downloadHtmlFile(doc, 'markdown-export.html');
-  }, [result.html, t]);
-
-  const showInput = previewMode !== 'preview';
-  const showPreview = previewMode !== 'html';
-
-  return (
-    <div className="p-4 w-full flex flex-col space-y-4 select-none">
-      <div className="flex flex-col space-y-4">
-        {/* 工具集成控制中枢 */}
-        <div className="flex flex-col sm:flex-row gap-3 justify-between items-stretch sm:items-center bg-secondary/40 rounded-xl border border-border/60 px-1.5 py-1.5 sm:h-12">
-          <SwitchButtonGroup
-            value={previewMode}
-            options={[
-              { value: 'split', label: t('splitMode') },
-              { value: 'preview', label: t('previewMode') },
-              { value: 'html', label: t('htmlMode') },
-            ]}
-            onChange={handleModeChange}
-            size="small"
-            className="w-full sm:w-auto"
-          />
-
-          <div className="flex gap-2 shrink-0">
-            <Button
-              variant="outline"
-              size="sm"
-              onClick={handleClear}
-              className="h-8 rounded-md font-medium text-xs gap-1.5 shadow-sm text-destructive hover:text-destructive hover:bg-destructive/5 dark:hover:bg-destructive/10 border-input/60"
-            >
-              <Trash2 className="h-3.5 w-3.5" />
-              {t('clear')}
-            </Button>
-            <Button
-              variant="outline"
-              size="sm"
-              onClick={handlePrint}
-              disabled={!result.html}
-              className="h-8 rounded-md font-medium text-xs gap-1.5 shadow-sm"
-            >
-              <Printer className="h-3.5 w-3.5" />
-              {t('print')}
-            </Button>
-            <Button
-              variant="outline"
-              size="sm"
-              onClick={handleDownload}
-              disabled={!result.html}
-              className="h-8 rounded-md font-medium text-xs gap-1.5 shadow-sm"
-            >
-              <Download className="h-3.5 w-3.5" />
-              {t('download')}
-            </Button>
-          </div>
-        </div>
-
-        {/* 错误拦截提示框 */}
-        {error && (
-          <div
-            role="alert"
-            className="p-3.5 bg-destructive/10 border border-destructive/20 rounded-xl text-destructive text-xs font-semibold tracking-wide"
-          >
-            {error}
-          </div>
-        )}
-
-        {/* 主框架多栏联动排版轴 */}
-        <div
-          className={cn(
-            'grid gap-4 min-h-[480px] w-full',
-            showInput && showPreview ? 'grid-cols-1 md:grid-cols-2' : 'grid-cols-1',
-          )}
-        >
-          {/* Markdown 输入翼终端 */}
-          {showInput && (
-            <div className="border border-border rounded-xl bg-card text-card-foreground shadow-sm overflow-hidden flex flex-col focus-within:ring-1 focus-within:ring-ring focus-within:border-ring">
-              <div className="flex h-9 items-center justify-between px-4 bg-muted/50 border-b border-border select-none">
-                <span className="text-[10px] font-bold text-muted-foreground/90 uppercase tracking-wider">
-                  {t('inputLabel')}
-                </span>
-                <span className="text-[10px] font-mono text-muted-foreground/60 tabular-nums">
-                  {t('charCount', { count: markdown.length })}
-                </span>
-              </div>
-              <textarea
-                value={markdown}
-                onChange={(e) => setMarkdown(e.target.value)}
-                placeholder={t('inputPlaceholder')}
-                className="flex-1 min-h-[390px] p-4 bg-transparent font-mono text-xs leading-relaxed resize-none focus:outline-none text-foreground/90 select-text"
-              />
-            </div>
-          )}
-
-          {/* 实时 HTML/Iframe 预览翼终端 */}
-          {showPreview && (
-            <div className="border border-border rounded-xl bg-card text-card-foreground shadow-sm overflow-hidden flex flex-col">
-              <div className="flex h-9 items-center justify-between px-4 bg-muted/50 border-b border-border select-none">
-                <span className="text-[10px] font-bold text-muted-foreground/90 uppercase tracking-wider">
-                  {(previewMode as string) === 'html' ? t('htmlOutputLabel') : t('previewLabel')}
-                </span>
-                <div className="flex items-center gap-2">
-                  <span className="text-[10px] font-mono text-muted-foreground/60 tabular-nums">
-                    {t('charCount', { count: result.htmlLength })}
-                  </span>
-                  <CopyButton
-                    text={result.html}
-                    className="h-6 w-6 rounded-md border text-muted-foreground"
-                  />
-                </div>
-              </div>
-
-              {(previewMode as string) === 'html' ? (
-                <textarea
-                  value={result.html}
-                  readOnly
-                  className="flex-1 min-h-[390px] p-4 font-mono text-xs leading-relaxed resize-none focus:outline-none bg-muted/30 dark:bg-muted/10 text-foreground/80 select-text"
-                />
-              ) : (
-                <div className="flex-1 min-h-[390px] overflow-hidden bg-transparent">
-                  <iframe
-                    ref={iframeRef}
-                    title="markdown-preview"
-                    className="w-full h-full min-h-[360px] border-none bg-transparent"
-                  />
-                </div>
-              )}
-            </div>
-          )}
-        </div>
-      </div>
-    </div>
-  );
-}