feat(frontend): 引入可视化Markdown写作与Shiki高亮

frontend/src/components/common/MarkdownContent.vue

@@ -0,0 +1,42 @@
+<script setup lang="ts">
+import { ref, watch } from 'vue'
+import { renderMarkdown } from '@/utils/markdown'
+
+const props = defineProps<{ source: string }>()
+const html = ref('')
+let renderVersion = 0
+
+watch(() => props.source, async (source) => {
+  const version = ++renderVersion
+  const result = await renderMarkdown(source)
+  if (version === renderVersion) html.value = result
+}, { immediate: true })
+</script>
+
+<template>
+  <div class="markdown-content" v-html="html" />
+</template>
+
+<style scoped>
+.markdown-content { white-space: normal; user-select: text; }
+.markdown-content :deep(p), .markdown-content :deep(ul), .markdown-content :deep(ol), .markdown-content :deep(pre), .markdown-content :deep(blockquote) { margin: .65em 0; }
+.markdown-content :deep(h1), .markdown-content :deep(h2), .markdown-content :deep(h3) { margin: 1em 0 .5em; line-height: var(--line-height-tight); }
+.markdown-content :deep(ul) { padding-left: 1.5em; list-style: disc; }
+.markdown-content :deep(ol) { padding-left: 1.5em; list-style: decimal; }
+.markdown-content :deep(.shiki) { overflow: auto; padding: var(--space-md); border: 1px solid var(--color-border-subtle); border-radius: var(--radius-md); }
+.markdown-content :deep(code) { padding: .1em .3em; border-radius: var(--radius-sm); background: var(--color-background-tertiary); font-family: var(--font-ui-mono); }
+.markdown-content :deep(pre code) { padding: 0; background: transparent; }
+.markdown-content :deep(blockquote) { padding-left: 1em; border-left: 3px solid var(--color-accent-primary); color: var(--color-text-secondary); }
+.markdown-content :deep(table) { width: 100%; margin: .65em 0; border-collapse: collapse; }
+.markdown-content :deep(th), .markdown-content :deep(td) { padding: .45em .65em; border: 1px solid var(--color-border-default); text-align: left; }
+.markdown-content :deep(img) { max-width: 100%; }
+.markdown-content :deep(hr) { margin: 1em 0; border: 0; border-top: 1px solid var(--color-border-default); }
+:global([data-theme='dark']) .markdown-content :deep(.shiki),
+:global([data-theme='dark']) .markdown-content :deep(.shiki span) {
+  color: var(--shiki-dark) !important;
+  background-color: var(--shiki-dark-bg) !important;
+  font-style: var(--shiki-dark-font-style) !important;
+  font-weight: var(--shiki-dark-font-weight) !important;
+  text-decoration: var(--shiki-dark-text-decoration) !important;
+}
+</style>

frontend/src/features/chat/ChatView.vue

@@ -7,7 +7,7 @@ import { useEditorStore } from '@/stores/editor'
 import { useProviderStore } from '@/stores/provider'
 import { useSkillStore } from '@/stores/skill'
 import { useWorkspaceStore } from '@/stores/workspace'
-import { renderMarkdown } from '@/utils/markdown'
+import MarkdownContent from '@/components/common/MarkdownContent.vue'
 
 const chatStore = useChatStore()
 const providerStore = useProviderStore()
@@ -69,7 +69,7 @@ async function openCitation(citation: Citation) {
         <div class="avatar">{{ message.role === 'user' ? '你' : 'AI' }}</div>
         <div class="message-body">
           <details v-if="message.thinking" class="thinking"><summary>思考过程</summary><p>{{ message.thinking }}</p></details>
-          <div v-if="message.content" class="message-content markdown-content" v-html="renderMarkdown(message.content)" />
+          <MarkdownContent v-if="message.content" class="message-content" :source="message.content" />
           <div v-else-if="chatStore.isStreaming" class="message-content">正在思考…</div>
           <div v-if="message.tool_calls?.length" class="tool-calls"><div v-for="call in message.tool_calls" :key="call.tool_call_id" class="item-card"><span class="badge info">{{ call.status }}</span><strong>{{ call.name }}</strong><pre>{{ JSON.stringify(call.parameters, null, 2) }}</pre></div></div>
           <div v-if="message.citations?.length" class="citations">
@@ -104,15 +104,6 @@ async function openCitation(citation: Citation) {
 .avatar { display: grid; place-items: center; width: 34px; height: 34px; border-radius: var(--radius-full); background: var(--color-background-tertiary); font-weight: 700; }
 .assistant .avatar { background: var(--color-accent-soft); color: var(--color-accent-primary); }
 .message-content { white-space: pre-wrap; line-height: var(--line-height-relaxed); }
-.markdown-content { white-space: normal; user-select: text; }
-.markdown-content :deep(p), .markdown-content :deep(ul), .markdown-content :deep(ol), .markdown-content :deep(pre), .markdown-content :deep(blockquote) { margin: .65em 0; }
-.markdown-content :deep(h1), .markdown-content :deep(h2), .markdown-content :deep(h3) { margin: 1em 0 .5em; line-height: var(--line-height-tight); }
-.markdown-content :deep(ul) { padding-left: 1.5em; list-style: disc; }.markdown-content :deep(ol) { padding-left: 1.5em; list-style: decimal; }
-.markdown-content :deep(pre) { overflow: auto; padding: var(--space-md); border-radius: var(--radius-md); background: var(--color-background-secondary); }
-.markdown-content :deep(code) { padding: .1em .3em; border-radius: var(--radius-sm); background: var(--color-background-tertiary); font-family: var(--font-ui-mono); }.markdown-content :deep(pre code) { padding: 0; background: transparent; }
-.markdown-content :deep(blockquote) { padding-left: 1em; border-left: 3px solid var(--color-accent-primary); color: var(--color-text-secondary); }
-.markdown-content :deep(table) { width: 100%; margin: .65em 0; border-collapse: collapse; }.markdown-content :deep(th), .markdown-content :deep(td) { padding: .45em .65em; border: 1px solid var(--color-border-default); text-align: left; }
-.markdown-content :deep(img) { max-width: 100%; }.markdown-content :deep(hr) { margin: 1em 0; border: 0; border-top: 1px solid var(--color-border-default); }
 .thinking { margin-bottom: var(--space-sm); color: var(--color-text-secondary); }.thinking p { margin-top: var(--space-sm); white-space: pre-wrap; }
 .tool-calls { display: grid; gap: var(--space-sm); margin-top: var(--space-md); }.tool-calls .item-card { display: grid; gap: var(--space-xs); }.tool-calls pre { overflow: auto; font-size: var(--font-size-xs); }
 .usage { display: block; margin-top: var(--space-xs); color: var(--color-text-tertiary); }

frontend/src/features/editor/EditorPane.vue

@@ -1,13 +1,10 @@
 <script setup lang="ts">
-import { computed } from 'vue'
 import { useEditorStore } from '@/stores/editor'
 import { useSettingsStore } from '@/stores/settings'
-import { renderMarkdown } from '@/utils/markdown'
+import VisualMarkdownEditor from './VisualMarkdownEditor.vue'
 
 const editorStore = useEditorStore()
 const settingsStore = useSettingsStore()
-const renderedContent = computed(() => renderMarkdown(editorStore.content))
-
 function updateContent(event: Event) {
   editorStore.updateContent((event.target as HTMLTextAreaElement).value)
   editorStore.scheduleAutoSave(settingsStore.autoSaveInterval)
@@ -15,11 +12,8 @@ function updateContent(event: Event) {
 </script>
 
 <template>
-  <div v-if="editorStore.mode === 'wysiwyg'" class="writing-layout">
-    <textarea class="editor-pane writing-input" :value="editorStore.content" :spellcheck="settingsStore.spellCheck"
-      aria-label="Markdown 写作编辑器" @input="updateContent" />
-    <article class="markdown-preview" aria-label="Markdown 实时预览" v-html="renderedContent" />
-  </div>
+  <VisualMarkdownEditor v-if="editorStore.mode === 'wysiwyg'" :key="editorStore.currentFilePath ?? 'empty'"
+    :initial-content="editorStore.content" />
   <textarea v-else class="editor-pane source" :value="editorStore.content" :spellcheck="false"
     aria-label="Markdown 源码编辑器" @input="updateContent" />
 </template>
@@ -39,21 +33,5 @@ function updateContent(event: Event) {
   line-height: 1.7;
   user-select: text;
 }
-.writing-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); flex: 1; min-height: 0; }
-.writing-input { border-right: 1px solid var(--color-border-default); font-family: var(--font-editor-sans); font-size: var(--font-editor-size); line-height: var(--font-editor-line-height); }
-.markdown-preview { width: min(100%, var(--editor-line-width, 80ch)); overflow: auto; margin: 0 auto; padding: var(--space-3xl) var(--space-xl); font-family: var(--font-editor-sans); font-size: var(--font-editor-size); line-height: var(--font-editor-line-height); user-select: text; }
-.markdown-preview :deep(h1), .markdown-preview :deep(h2), .markdown-preview :deep(h3) { margin: 1.4em 0 .6em; line-height: var(--line-height-tight); color: var(--color-text-primary); }
-.markdown-preview :deep(h1:first-child), .markdown-preview :deep(h2:first-child) { margin-top: 0; }
-.markdown-preview :deep(p), .markdown-preview :deep(ul), .markdown-preview :deep(ol), .markdown-preview :deep(blockquote), .markdown-preview :deep(pre), .markdown-preview :deep(table) { margin: .8em 0; }
-.markdown-preview :deep(ul), .markdown-preview :deep(ol) { padding-left: 1.6em; }
-.markdown-preview :deep(ul) { list-style: disc; }.markdown-preview :deep(ol) { list-style: decimal; }
-.markdown-preview :deep(blockquote) { padding-left: 1em; border-left: 3px solid var(--color-accent-primary); color: var(--color-text-secondary); }
-.markdown-preview :deep(code) { padding: .15em .35em; border-radius: var(--radius-sm); background: var(--color-background-tertiary); font-family: var(--font-editor-mono); }
-.markdown-preview :deep(pre) { overflow: auto; padding: var(--space-lg); border-radius: var(--radius-md); background: var(--color-background-secondary); }
-.markdown-preview :deep(pre code) { padding: 0; background: transparent; }
-.markdown-preview :deep(table) { width: 100%; border-collapse: collapse; }.markdown-preview :deep(th), .markdown-preview :deep(td) { padding: .5em .7em; border: 1px solid var(--color-border-default); text-align: left; }
-.markdown-preview :deep(img) { max-width: 100%; }.markdown-preview :deep(a) { color: var(--color-text-link); }
-.markdown-preview :deep(hr) { margin: 1.5em 0; border: 0; border-top: 1px solid var(--color-border-default); }
 .editor-pane.source { font-family: var(--font-editor-mono); font-size: var(--font-editor-size); line-height: var(--font-editor-line-height); }
-@media (max-width: 900px) { .writing-layout { grid-template-columns: 1fr; grid-template-rows: minmax(220px, 1fr) minmax(220px, 1fr); overflow: auto; }.writing-input { min-height: 220px; border-right: 0; border-bottom: 1px solid var(--color-border-default); }.markdown-preview { min-height: 220px; } }
 </style>

frontend/src/features/editor/VisualMarkdownEditor.vue

@@ -0,0 +1,144 @@
+<script setup lang="ts">
+import { onBeforeUnmount, onMounted, ref } from 'vue'
+import { CollectionTag, Edit, EditPen, List, Memo } from '@element-plus/icons-vue'
+import { Crepe } from '@milkdown/crepe'
+import {
+  toggleEmphasisCommand,
+  toggleStrongCommand,
+  wrapInBulletListCommand,
+  wrapInHeadingCommand,
+  wrapInOrderedListCommand,
+} from '@milkdown/kit/preset/commonmark'
+import { callCommand } from '@milkdown/kit/utils'
+import AppIcon from '@/components/common/AppIcon.vue'
+import { useEditorStore } from '@/stores/editor'
+import { useSettingsStore } from '@/stores/settings'
+import { highlightCode } from '@/utils/markdown'
+import '@milkdown/crepe/theme/common/style.css'
+import '@milkdown/crepe/theme/frame.css'
+
+const props = defineProps<{ initialContent: string }>()
+const editorStore = useEditorStore()
+const settingsStore = useSettingsStore()
+const editorRoot = ref<HTMLElement | null>(null)
+const loading = ref(true)
+let crepe: Crepe | null = null
+
+type ToolbarCommand = 'heading' | 'bold' | 'italic' | 'ordered-list' | 'bullet-list'
+
+function runCommand(command: ToolbarCommand) {
+  const editor = crepe?.editor
+  if (!editor) return
+  const actions = {
+    heading: callCommand(wrapInHeadingCommand.key, 2),
+    bold: callCommand(toggleStrongCommand.key),
+    italic: callCommand(toggleEmphasisCommand.key),
+    'ordered-list': callCommand(wrapInOrderedListCommand.key),
+    'bullet-list': callCommand(wrapInBulletListCommand.key),
+  }
+  editor.action(actions[command])
+  editorRoot.value?.querySelector<HTMLElement>('.ProseMirror')?.focus()
+}
+
+onMounted(async () => {
+  crepe = new Crepe({
+    root: editorRoot.value,
+    defaultValue: props.initialContent,
+    features: { [Crepe.Feature.TopBar]: false },
+    featureConfigs: {
+      [Crepe.Feature.Placeholder]: { text: '开始记录你的想法…' },
+      [Crepe.Feature.CodeMirror]: {
+        previewOnlyByDefault: true,
+        previewLabel: 'Shiki 高亮预览',
+        previewLoading: '正在高亮…',
+        previewToggleText: (previewOnlyMode) => previewOnlyMode ? '编辑代码' : '查看高亮',
+        renderPreview: (language, content, applyPreview) => {
+          void highlightCode(content, language).then((html) => {
+            const template = document.createElement('template')
+            template.innerHTML = html
+            applyPreview(template.content.firstElementChild as HTMLElement | null)
+          })
+          return null
+        },
+      },
+    },
+  })
+  crepe.on((listener) => {
+    listener.markdownUpdated((_ctx, markdown, previousMarkdown) => {
+      if (markdown === previousMarkdown || markdown === editorStore.content) return
+      editorStore.updateContent(markdown)
+      editorStore.scheduleAutoSave(settingsStore.autoSaveInterval)
+    })
+  })
+  await crepe.create()
+  loading.value = false
+})
+
+onBeforeUnmount(() => { void crepe?.destroy() })
+</script>
+
+<template>
+  <div class="visual-editor">
+    <div class="markdown-toolbar" role="toolbar" aria-label="Markdown 格式工具栏">
+      <button type="button" title="二级标题" @click="runCommand('heading')"><AppIcon :icon="CollectionTag" /><span>标题</span></button>
+      <button type="button" title="加粗 (Ctrl+B)" @click="runCommand('bold')"><AppIcon :icon="Edit" /><span>加粗</span></button>
+      <button type="button" title="斜体 (Ctrl+I)" @click="runCommand('italic')"><AppIcon :icon="EditPen" /><span>斜体</span></button>
+      <span class="toolbar-divider" />
+      <button type="button" title="有序列表" @click="runCommand('ordered-list')"><AppIcon :icon="Memo" /><span>有序列表</span></button>
+      <button type="button" title="无序列表" @click="runCommand('bullet-list')"><AppIcon :icon="List" /><span>无序列表</span></button>
+    </div>
+    <div v-if="loading" class="editor-loading">正在加载编辑器…</div>
+    <div ref="editorRoot" class="milkdown-host" :class="{ loading }" />
+  </div>
+</template>
+
+<style scoped>
+.visual-editor { display: flex; flex: 1; min-height: 0; flex-direction: column; background: var(--color-background-primary); }
+.markdown-toolbar { display: flex; align-items: center; flex-wrap: wrap; gap: 2px; min-height: 42px; padding: 5px var(--space-lg); border-bottom: 1px solid var(--color-border-subtle); background: var(--color-surface-primary); }
+.markdown-toolbar button { display: inline-flex; align-items: center; gap: 5px; min-height: 30px; padding: 4px 8px; border-radius: var(--radius-sm); color: var(--color-text-secondary); }
+.markdown-toolbar button:hover { background: var(--color-background-hover); color: var(--color-text-primary); }
+.markdown-toolbar button:focus-visible { outline: 2px solid var(--color-border-focus); outline-offset: 1px; }
+.markdown-toolbar button span { font-size: var(--font-size-xs); }
+.toolbar-divider { width: 1px; height: 20px; margin: 0 var(--space-xs); background: var(--color-border-default); }
+.milkdown-host { flex: 1; min-height: 0; overflow: auto; color: var(--color-text-primary); }
+.milkdown-host.loading { visibility: hidden; }
+.editor-loading { padding: var(--space-xl); color: var(--color-text-tertiary); }
+.milkdown-host :deep(.milkdown) {
+  min-height: 100%;
+  background: transparent;
+  color: inherit;
+  --crepe-color-background: var(--color-background-primary);
+  --crepe-color-on-background: var(--color-text-primary);
+  --crepe-color-surface: var(--color-surface-primary);
+  --crepe-color-surface-low: var(--color-background-secondary);
+  --crepe-color-on-surface: var(--color-text-primary);
+  --crepe-color-on-surface-variant: var(--color-text-secondary);
+  --crepe-color-outline: var(--color-border-default);
+  --crepe-color-primary: var(--color-accent-primary);
+  --crepe-color-secondary: var(--color-accent-soft);
+  --crepe-color-on-secondary: var(--color-text-primary);
+  --crepe-color-inverse: var(--color-text-primary);
+  --crepe-color-on-inverse: var(--color-background-primary);
+  --crepe-color-inline-code: var(--color-error);
+  --crepe-color-error: var(--color-error);
+  --crepe-color-hover: var(--color-background-hover);
+  --crepe-color-selected: var(--color-accent-soft);
+  --crepe-color-inline-area: var(--color-background-tertiary);
+  --crepe-font-default: var(--font-editor-sans);
+  --crepe-font-code: var(--font-editor-mono);
+}
+.milkdown-host :deep(.ProseMirror) { box-sizing: border-box; width: min(100%, var(--editor-line-width, 80ch)); min-height: 100%; margin: 0 auto; padding: var(--space-3xl) var(--space-xl); outline: none; font-family: var(--font-editor-sans); font-size: var(--font-editor-size); line-height: var(--font-editor-line-height); caret-color: var(--color-accent-primary); }
+.milkdown-host :deep(.ProseMirror-selectednode) { outline-color: var(--color-accent-primary); }
+.milkdown-host :deep(code) { font-family: var(--font-editor-mono); }
+.milkdown-host :deep(.shiki) { box-sizing: border-box; width: 100%; overflow: auto; padding: var(--space-md); border-radius: var(--radius-md); }
+:global([data-theme='dark']) .milkdown-host :deep(.shiki),
+:global([data-theme='dark']) .milkdown-host :deep(.shiki span) {
+  color: var(--shiki-dark) !important;
+  background-color: var(--shiki-dark-bg) !important;
+  font-style: var(--shiki-dark-font-style) !important;
+  font-weight: var(--shiki-dark-font-weight) !important;
+  text-decoration: var(--shiki-dark-text-decoration) !important;
+}
+:global([data-theme='dark']) .milkdown-host :deep(.milkdown) { color-scheme: dark; }
+@media (max-width: 680px) { .markdown-toolbar button span { display: none; } }
+</style>

frontend/src/utils/markdown.ts

@@ -1,9 +1,51 @@
 import DOMPurify from 'dompurify'
 import { marked } from 'marked'
+import { createHighlighterCore } from 'shiki/core'
+import { createJavaScriptRegexEngine } from '@shikijs/engine-javascript'
+import css from '@shikijs/langs/css'
+import html from '@shikijs/langs/html'
+import javascript from '@shikijs/langs/javascript'
+import json from '@shikijs/langs/json'
+import markdown from '@shikijs/langs/markdown'
+import python from '@shikijs/langs/python'
+import shell from '@shikijs/langs/shellscript'
+import sql from '@shikijs/langs/sql'
+import typescript from '@shikijs/langs/typescript'
+import githubDark from '@shikijs/themes/github-dark'
+import githubLight from '@shikijs/themes/github-light'
 
 marked.setOptions({ gfm: true, breaks: true })
 
-export function renderMarkdown(source: string): string {
-  const html = marked.parse(source, { async: false }) as string
-  return DOMPurify.sanitize(html, { USE_PROFILES: { html: true } })
+const highlighter = createHighlighterCore({
+  themes: [githubLight, githubDark],
+  langs: [markdown, html, css, javascript, typescript, json, python, shell, sql],
+  engine: createJavaScriptRegexEngine(),
+})
+
+const languageAliases: Record<string, string> = {
+  bash: 'shell', js: 'javascript', md: 'markdown', plaintext: 'text', py: 'python', sh: 'shell', ts: 'typescript',
+}
+
+export async function highlightCode(source: string, requestedLanguage = 'text'): Promise<string> {
+  const shiki = await highlighter
+  const language = languageAliases[requestedLanguage] ?? requestedLanguage
+  const loadedLanguage = shiki.getLoadedLanguages().includes(language as never) ? language : 'markdown'
+  return shiki.codeToHtml(source, {
+    lang: loadedLanguage,
+    themes: { light: 'github-light', dark: 'github-dark' },
+    defaultColor: false,
+  })
+}
+
+export async function renderMarkdown(source: string): Promise<string> {
+  const html = marked.parse(source, { async: false }) as string
+  const documentNode = new DOMParser().parseFromString(`<body>${html}</body>`, 'text/html')
+  for (const code of documentNode.querySelectorAll('pre > code')) {
+    const requestedLanguage = [...code.classList].find((name) => name.startsWith('language-'))?.slice(9) || 'text'
+    const highlighted = await highlightCode(code.textContent ?? '', requestedLanguage)
+    const fragment = document.createRange().createContextualFragment(highlighted)
+    code.parentElement?.replaceWith(fragment)
+  }
+
+  return DOMPurify.sanitize(documentNode.body.innerHTML, { USE_PROFILES: { html: true } })
 }

frontend/tsconfig.app.json

@@ -9,7 +9,7 @@
     "resolveJsonModule": true,
     "isolatedModules": true,
     "esModuleInterop": true,
-    "lib": ["ES2022", "DOM", "DOM.Iterable"],
+    "lib": ["ES2022", "ESNext.Disposable", "DOM", "DOM.Iterable"],
     "types": ["vite/client"],
     "baseUrl": ".",
     "paths": {