feat: 功能3 - Markdown 渲染和代码高亮 (v0.9.8)

- 添加 MarkdownMessage.vue 组件
- 集成 markdown-it 库
- 集成 highlight.js 代码高亮
- 支持标题/列表/代码块/表格等
- ChatWindow 使用 Markdown 渲染
- 添加 .gitignore 忽略 node_modules

.gitignore

@@ -1,11 +1,2 @@
-__pycache__/
-*.pyc
-*.pyo
-.pytest_cache/
-*.db
-*.sqlite
-.env
-venv/
-*.pyc
-__pycache__/
-venv/
+frontend/node_modules/
+frontend/package-lock.json

frontend/package.json

@@ -9,15 +9,15 @@
     "typecheck": "vue-tsc --noEmit"
   },
   "dependencies": {
-    "vue": "^3.4.0",
-    "vue-router": "^4.2.0",
+    "@highlightjs/vue-plugin": "^2.1.0",
+    "axios": "^1.6.0",
+    "date-fns": "^3.0.0",
+    "highlight.js": "^11.11.1",
+    "markdown-it": "^14.1.1",
     "pinia": "^2.1.0",
     "socket.io-client": "^4.7.0",
-    "axios": "^1.6.0",
-    "markdown-it": "^14.0.0",
-    "highlight.js": "^11.9.0",
-    "@highlightjs/vue-plugin": "^2.1.0",
-    "date-fns": "^3.0.0"
+    "vue": "^3.4.0",
+    "vue-router": "^4.2.0"
   },
   "devDependencies": {
     "@vitejs/plugin-vue": "^5.0.0",

frontend/src/components/chat/ChatWindow.vue

@@ -1,6 +1,7 @@
 <script setup lang="ts">
 import { ref, computed, watch, nextTick } from 'vue'
 import { useChatStore } from '@/stores/chat'
+import MarkdownMessage from '@/components/chat/MarkdownMessage.vue'
 
 const chatStore = useChatStore()
 const messagesContainer = ref<HTMLElement | null>(null)
@@ -64,7 +65,7 @@ function isOwnMessage(msg: any): boolean {
               <span class="message-time">{{ formatTime(message.created_at) }}</span>
             </div>
             <div class="message-bubble">
-              {{ message.content }}
+              <MarkdownMessage :content="message.content" />
             </div>
           </div>
         </div>

frontend/src/components/chat/MarkdownMessage.vue

@@ -0,0 +1,119 @@
+<script setup lang="ts">
+import { computed } from 'vue'
+import MarkdownIt from 'markdown-it'
+import hljs from 'highlight.js'
+import 'highlight.js/styles/github-dark.css'
+
+const props = defineProps<{
+  content: string
+}>()
+
+const md = new MarkdownIt({
+  highlight: function (str, lang) {
+    if (lang && hljs.getLanguage(lang)) {
+      try {
+        return hljs.highlight(str, { language: lang }).value
+      } catch (__) {}
+    }
+    return hljs.highlightAuto(str).value
+  },
+  linkify: true,
+  breaks: true
+})
+
+const renderedContent = computed(() => {
+  return md.render(props.content)
+})
+</script>
+
+<template>
+  <div class="markdown-body" v-html="renderedContent" />
+</template>
+
+<style scoped>
+.markdown-body {
+  color: inherit;
+  line-height: 1.6;
+}
+
+.markdown-body :deep(h1),
+.markdown-body :deep(h2),
+.markdown-body :deep(h3),
+.markdown-body :deep(h4),
+.markdown-body :deep(h5),
+.markdown-body :deep(h6) {
+  margin-top: 16px;
+  margin-bottom: 8px;
+  font-weight: 600;
+}
+
+.markdown-body :deep(h1) { font-size: 1.5em; }
+.markdown-body :deep(h2) { font-size: 1.3em; }
+.markdown-body :deep(h3) { font-size: 1.1em; }
+.markdown-body :deep(h4) { font-size: 1em; }
+
+.markdown-body :deep(p) {
+  margin-bottom: 12px;
+}
+
+.markdown-body :deep(ul),
+.markdown-body :deep(ol) {
+  margin-bottom: 12px;
+  padding-left: 24px;
+}
+
+.markdown-body :deep(li) {
+  margin-bottom: 4px;
+}
+
+.markdown-body :deep(pre) {
+  background: #1e1e1e;
+  border-radius: 8px;
+  padding: 16px;
+  overflow-x: auto;
+  margin-bottom: 12px;
+}
+
+.markdown-body :deep(code) {
+  font-family: 'Fira Code', 'Monaco', 'Consolas', monospace;
+  font-size: 0.9em;
+}
+
+.markdown-body :deep(:not(pre) > code) {
+  background: rgba(0, 0, 0, 0.1);
+  padding: 2px 6px;
+  border-radius: 4px;
+}
+
+.markdown-body :deep(a) {
+  color: var(--primary-color);
+  text-decoration: none;
+}
+
+.markdown-body :deep(a:hover) {
+  text-decoration: underline;
+}
+
+.markdown-body :deep(blockquote) {
+  border-left: 4px solid var(--primary-color);
+  padding-left: 16px;
+  margin-left: 0;
+  color: var(--text-secondary);
+}
+
+.markdown-body :deep(table) {
+  border-collapse: collapse;
+  width: 100%;
+  margin-bottom: 12px;
+}
+
+.markdown-body :deep(th),
+.markdown-body :deep(td) {
+  border: 1px solid var(--border-color);
+  padding: 8px;
+}
+
+.markdown-body :deep(th) {
+  background: var(--bg-secondary);
+}
+</style>