diff --git a/web/package-lock.json b/web/package-lock.json
index 708fba6..3c74c0c 100644
--- a/web/package-lock.json
+++ b/web/package-lock.json
@@ -24,6 +24,7 @@
         "@codemirror/lang-sql": "^6.10.0",
         "@codemirror/lang-yaml": "^6.1.2",
         "@codemirror/language": "^6.12.1",
+        "@codemirror/legacy-modes": "^6.5.2",
         "@codemirror/state": "^6.5.3",
         "@codemirror/theme-one-dark": "^6.1.3",
         "@codemirror/view": "^6.39.8",
@@ -393,6 +394,15 @@
         "style-mod": "^4.0.0"
       }
     },
+    "node_modules/@codemirror/legacy-modes": {
+      "version": "6.5.2",
+      "resolved": "https://registry.npmmirror.com/@codemirror/legacy-modes/-/legacy-modes-6.5.2.tgz",
+      "integrity": "sha512-/jJbwSTazlQEDOQw2FJ8LEEKVS72pU0lx6oM54kGpL8t/NJ2Jda3CZ4pcltiKTdqYSRk3ug1B3pil1gsjA6+8Q==",
+      "license": "MIT",
+      "dependencies": {
+        "@codemirror/language": "^6.0.0"
+      }
+    },
     "node_modules/@codemirror/lint": {
       "version": "6.9.2",
       "resolved": "https://registry.npmmirror.com/@codemirror/lint/-/lint-6.9.2.tgz",
diff --git a/web/package.json b/web/package.json
index addaeab..60c6f56 100644
--- a/web/package.json
+++ b/web/package.json
@@ -24,6 +24,7 @@
     "@codemirror/lang-sql": "^6.10.0",
     "@codemirror/lang-yaml": "^6.1.2",
     "@codemirror/language": "^6.12.1",
+    "@codemirror/legacy-modes": "^6.5.2",
     "@codemirror/state": "^6.5.3",
     "@codemirror/theme-one-dark": "^6.1.3",
     "@codemirror/view": "^6.39.8",
diff --git a/web/src/components/FileSystem/components/FileEditorPanel.vue b/web/src/components/FileSystem/components/FileEditorPanel.vue
index 19f887f..d3b326b 100644
--- a/web/src/components/FileSystem/components/FileEditorPanel.vue
+++ b/web/src/components/FileSystem/components/FileEditorPanel.vue
@@ -10,6 +10,7 @@
         <template v-else-if="config.isMarkdownFile">📝 Markdown 预览</template>
         <template v-else-if="config.isExcelFile">📊 Excel 预览</template>
         <template v-else-if="config.isWordFile">📄 Word 预览</template>
+        <template v-else-if="config.isCsvFile">📋 CSV 预览</template>
         <template v-else>📝 文件内容</template>
       </span>
       <div v-if="config.currentFileName" class="filename-with-copy">
@@ -99,6 +100,16 @@
         </div>
       </div>
 
+      <!-- CSV 预览 -->
+      <div v-else-if="config.isCsvFile" class="office-preview">
+        <div class="office-preview-container" ref="csvPreviewRef">
+          <a-spin v-if="config.officeLoading" :loading="true" tip="加载中...">
+            <div class="loading-placeholder"></div>
+          </a-spin>
+          <a-alert v-else-if="config.officeError" type="error" :message="config.officeError" />
+        </div>
+      </div>
+
       <!-- HTML 预览/编辑 -->
       <div v-else-if="config.isHtmlFile" class="html-preview-wrapper">
         <!-- 编辑模式/预览模式切换按钮 -->
@@ -203,7 +214,7 @@
         </div>
 
         <!-- 预览模式 -->
-        <div v-if="!config.isEditMode" class="markdown-preview-content markdown-content" v-html="config.rendered"></div>
+        <div v-if="!config.isEditMode" ref="markdownPreviewRef" class="markdown-preview-content markdown-content" v-html="config.rendered"></div>
 
         <!-- 编辑模式 -->
         <div v-else class="markdown-edit-wrapper">
@@ -276,14 +287,13 @@
 </template>
 
 <script setup lang="ts">
-import { computed, watch, nextTick, defineAsyncComponent, ref, onMounted } from 'vue'
+import { computed, watch, nextTick, defineAsyncComponent, ref, onUnmounted } from 'vue'
 import { Message } from '@arco-design/web-vue'
 import { IconSave, IconEdit, IconEye, IconUndo, IconCopy } from '@arco-design/web-vue/es/icon'
 import { getFileName } from '@/utils/fileUtils'
 import type { FileEditorPanelConfig } from '@/types/file-system'
 import { renderMermaidDiagrams } from '@/utils/markedExtensions'
-import { previewExcel, previewWord } from '@/utils/filePreviewHandlers'
-import { getFileServerURL } from '@/api/system'
+import { previewExcel, previewWord, previewCsv } from '@/utils/filePreviewHandlers'
 
 // 异步加载 CodeEditor 组件，减少初始包大小
 const AsyncCodeEditor = defineAsyncComponent({
@@ -295,6 +305,10 @@ const AsyncCodeEditor = defineAsyncComponent({
 // Office 预览容器引用
 const excelPreviewRef = ref<HTMLElement | null>(null)
 const wordPreviewRef = ref<HTMLElement | null>(null)
+const csvPreviewRef = ref<HTMLElement | null>(null)
+
+// Markdown 预览容器引用
+const markdownPreviewRef = ref<HTMLElement | null>(null)
 
 // Props
 interface Props {
@@ -316,6 +330,7 @@ interface Emits {
   (e: 'contentUpdate', content: string): void
   (e: 'imageLoad', dimensions: string): void
   (e: 'imageError'): void
+  (e: 'openLocalFile', link: string): void
 }
 
 const emit = defineEmits<Emits>()
@@ -437,63 +452,56 @@ watch(() => props.config.isEditMode, async (newVal, oldVal) => {
 })
 
 // 监听 Excel 文件变化，触发预览
-watch(() => [props.config.isExcelFile, props.config.currentFileFullPath], async ([isExcel, filePath]) => {
+watch(() => [props.config.isExcelFile, props.config.currentFileFullPath] as const, async ([isExcel, filePath]) => {
   if (isExcel && filePath && excelPreviewRef.value) {
     await loadExcelPreview(filePath)
   }
 }, { immediate: true })
 
 // 监听 Word 文件变化，触发预览
-watch(() => [props.config.isWordFile, props.config.currentFileFullPath], async ([isWord, filePath]) => {
+watch(() => [props.config.isWordFile, props.config.currentFileFullPath] as const, async ([isWord, filePath]) => {
   if (isWord && filePath && wordPreviewRef.value) {
     await loadWordPreview(filePath)
   }
 }, { immediate: true })
 
-// Excel 预览加载
+// 监听 CSV 文件变化，触发预览
+watch(() => [props.config.isCsvFile, props.config.currentFileFullPath] as const, async ([isCsv, filePath]) => {
+  if (isCsv && filePath) {
+    await nextTick()
+    if (csvPreviewRef.value) {
+      await loadCsvPreview(filePath)
+    }
+  }
+}, { immediate: true })
+
+// Excel 预览加载（直接使用本地文件服务器，秒开）
 const loadExcelPreview = async (filePath: string) => {
   if (!excelPreviewRef.value) return
 
   try {
-    // 清空容器
-    excelPreviewRef.value.innerHTML = ''
-
-    // 使用本地文件服务器获取文件内容
-    const serverURL = await getFileServerURL()
-    console.log('[loadExcelPreview] 文件路径:', filePath)
-    console.log('[loadExcelPreview] 服务器 URL:', serverURL)
-
-    // Windows 路径处理：将反斜杠替换为正斜杠
-    const normalizedPath = filePath.replace(/\\/g, '/')
-    console.log('[loadExcelPreview] 规范化路径:', normalizedPath)
-
-    const encodedPath = encodeURIComponent(normalizedPath)
-    const fullURL = `${serverURL}/localfs/${encodedPath}`
-    console.log('[loadExcelPreview] 完整 URL:', fullURL)
-
-    const response = await fetch(fullURL)
-    console.log('[loadExcelPreview] 响应状态:', response.status)
-
-    if (!response.ok) throw new Error(`无法读取文件 (HTTP ${response.status})`)
+    excelPreviewRef.value.innerHTML = '<div class="loading-hint">加载中...</div>'
 
+    // 直接从本地文件服务器获取（不走 base64）
+    const fileUrl = props.config.previewUrl
+    const response = await fetch(fileUrl)
     const blob = await response.blob()
-    console.log('[loadExcelPreview] Blob 大小:', blob.size)
-
-    const file = new File([blob], getFileName(filePath), { type: 'application/vnd.ms-excel' })
+    const file = new File([blob], getFileName(filePath), { type: blob.type || 'application/vnd.ms-excel' })
 
     const result = await previewExcel(file, excelPreviewRef.value)
     if (!result.success) {
       throw new Error(result.error || '预览失败')
     }
   } catch (error) {
-    console.error('[FileEditorPanel] Excel 预览失败:', error)
-    excelPreviewRef.value.innerHTML = `
-      <div class="preview-error">
-        <p>❌ Excel 预览失败</p>
-        <p class="error-detail">${error.message}</p>
-        <p class="error-hint">💡 提示：尝试使用外部应用打开文件</p>
-      </div>
-    `
+    console.error('[loadExcelPreview] 错误:', error)
+    if (excelPreviewRef.value) {
+      excelPreviewRef.value.innerHTML = `
+        <div class="preview-error">
+          <p>❌ Excel 预览失败</p>
+          <p class="error-detail">${error?.message || '未知错误'}</p>
+        </div>
+      `
+    }
   }
 }
 
@@ -502,45 +510,56 @@ const loadWordPreview = async (filePath: string) => {
   if (!wordPreviewRef.value) return
 
   try {
-    // 清空容器
-    wordPreviewRef.value.innerHTML = ''
-
-    // 使用本地文件服务器获取文件内容
-    const serverURL = await getFileServerURL()
-    console.log('[loadWordPreview] 文件路径:', filePath)
-    console.log('[loadWordPreview] 服务器 URL:', serverURL)
-
-    // Windows 路径处理：将反斜杠替换为正斜杠
-    const normalizedPath = filePath.replace(/\\/g, '/')
-    console.log('[loadWordPreview] 规范化路径:', normalizedPath)
-
-    const encodedPath = encodeURIComponent(normalizedPath)
-    const fullURL = `${serverURL}/localfs/${encodedPath}`
-    console.log('[loadWordPreview] 完整 URL:', fullURL)
-
-    const response = await fetch(fullURL)
-    console.log('[loadWordPreview] 响应状态:', response.status)
-
-    if (!response.ok) throw new Error(`无法读取文件 (HTTP ${response.status})`)
+    wordPreviewRef.value.innerHTML = '<div class="loading-hint">加载中...</div>'
 
+    const fileUrl = props.config.previewUrl
+    const response = await fetch(fileUrl)
     const blob = await response.blob()
-    console.log('[loadWordPreview] Blob 大小:', blob.size)
-
-    const file = new File([blob], getFileName(filePath), { type: 'application/vnd.ms-word' })
+    const file = new File([blob], getFileName(filePath), { type: blob.type || 'application/vnd.ms-word' })
 
     const result = await previewWord(file, wordPreviewRef.value)
     if (!result.success) {
       throw new Error(result.error || '预览失败')
     }
   } catch (error) {
-    console.error('[FileEditorPanel] Word 预览失败:', error)
-    wordPreviewRef.value.innerHTML = `
-      <div class="preview-error">
-        <p>❌ Word 预览失败</p>
-        <p class="error-detail">${error.message}</p>
-        <p class="error-hint">💡 提示：尝试使用外部应用打开文件</p>
-      </div>
-    `
+    console.error('[loadWordPreview] 错误:', error)
+    if (wordPreviewRef.value) {
+      wordPreviewRef.value.innerHTML = `
+        <div class="preview-error">
+          <p>❌ Word 预览失败</p>
+          <p class="error-detail">${error?.message || '未知错误'}</p>
+        </div>
+      `
+    }
+  }
+}
+
+// CSV 预览加载
+const loadCsvPreview = async (filePath: string) => {
+  if (!csvPreviewRef.value) return
+
+  try {
+    csvPreviewRef.value.innerHTML = '<div class="loading-hint">加载中...</div>'
+
+    const fileUrl = props.config.previewUrl
+    const response = await fetch(fileUrl)
+    const blob = await response.blob()
+    const file = new File([blob], getFileName(filePath), { type: 'text/csv' })
+
+    const result = await previewCsv(file, csvPreviewRef.value)
+    if (!result.success) {
+      throw new Error(result.error || '预览失败')
+    }
+  } catch (error) {
+    console.error('[loadCsvPreview] 错误:', error)
+    if (csvPreviewRef.value) {
+      csvPreviewRef.value.innerHTML = `
+        <div class="preview-error">
+          <p>❌ CSV 预览失败</p>
+          <p class="error-detail">${error?.message || String(error)}</p>
+        </div>
+      `
+    }
   }
 }
 
@@ -578,6 +597,40 @@ const handleCopyPath = () => {
     Message.success('路径已复制')
   })
 }
+
+// 处理 Markdown 预览中的本地文件链接点击
+const handleMarkdownLinkClick = (event: MouseEvent) => {
+  const target = event.target as HTMLElement
+  const link = target.closest('a[data-local-link]') as HTMLAnchorElement | null
+
+  if (link) {
+    event.preventDefault()
+    event.stopPropagation()
+
+    const localLink = link.getAttribute('data-local-link')
+    if (localLink) {
+      emit('openLocalFile', localLink)
+    }
+  }
+}
+
+// 监听预览区域的变化，添加/移除事件监听
+watch([markdownPreviewRef, () => props.config.isEditMode], ([refVal, isEditMode], [oldRefVal]) => {
+  // 移除旧的监听器
+  if (oldRefVal) {
+    oldRefVal.removeEventListener('click', handleMarkdownLinkClick)
+  }
+  // 添加新的监听器（仅在预览模式且有 DOM 元素时）
+  if (refVal && !isEditMode) {
+    refVal.addEventListener('click', handleMarkdownLinkClick)
+  }
+}, { immediate: true })
+
+onUnmounted(() => {
+  if (markdownPreviewRef.value) {
+    markdownPreviewRef.value.removeEventListener('click', handleMarkdownLinkClick)
+  }
+})
 </script>
 
 <style scoped>
@@ -798,6 +851,18 @@ const handleCopyPath = () => {
   text-decoration: underline;
 }
 
+/* 本地文件链接样式 */
+.markdown-preview-content :deep(a.local-file-link) {
+  color: rgb(var(--primary-6));
+  cursor: pointer;
+  border-bottom: 1px dashed rgb(var(--primary-6));
+  text-decoration: none;
+}
+
+.markdown-preview-content :deep(a.local-file-link:hover) {
+  background-color: rgba(var(--primary-6), 0.1);
+}
+
 .markdown-preview-content :deep(code) {
   background: var(--color-fill-2);
   padding: 2px 6px;
diff --git a/web/src/components/FileSystem/index.vue b/web/src/components/FileSystem/index.vue
index ee2caca..3749de7 100644
--- a/web/src/components/FileSystem/index.vue
+++ b/web/src/components/FileSystem/index.vue
@@ -63,6 +63,7 @@
           @content-update="handleContentUpdate"
           @image-load="handleImageLoad"
           @image-error="handleImageError"
+          @open-local-file="handleOpenLocalFile"
         />
       </div>
     </div>
@@ -120,7 +121,7 @@ import { useCommonPaths } from './composables/useCommonPaths'
 // 导入工具函数
 import { getFileName, sortFileList } from '@/utils/fileUtils'
 import { getParentPath } from '@/utils/pathHelpers'
-import { isImageFile, isVideoFile, isAudioFile, isPdfFile, isHtmlFile, isMarkdownFile, isExcelFile, isWordFile } from '@/utils/fileTypeHelpers'
+import { isImageFile, isVideoFile, isAudioFile, isPdfFile, isHtmlFile, isMarkdownFile, isExcelFile, isWordFile, isCsvFile } from '@/utils/fileTypeHelpers'
 import { listDir } from '@/api/system'
 import { STORAGE_KEYS, DEFAULTS, UI_TEXT, VALIDATION_RULES, FILE_EXTENSIONS } from '@/utils/constants'
 
@@ -321,6 +322,7 @@ const fileEditorPanelConfig = computed(() => {
     isMarkdownFile: isMarkdownFile(currentFileName),
     isExcelFile: isExcelFile(currentFileName),
     isWordFile: isWordFile(currentFileName),
+    isCsvFile: isCsvFile(currentFileName),
     officeLoading: false,
     officeError: null,
     canSaveFile: canSaveFile.value,
@@ -381,6 +383,54 @@ const handleOpenFile = async (path: string) => {
   }
 }
 
+// 处理 Markdown 预览中的本地文件链接点击
+const handleOpenLocalFile = async (link: string) => {
+  if (!link) return
+
+  try {
+    let targetPath = link
+
+    // 如果是相对路径，基于当前 MD 文件所在目录解析
+    if (!link.match(/^[A-Za-z]:/) && !link.startsWith('/')) {
+      // 使用当前预览文件的完整路径
+      const currentFilePath = fileEditorPanelConfig.value.currentFileFullPath
+      if (currentFilePath) {
+        // 获取当前文件所在目录
+        const currentDir = getParentPath(currentFilePath)
+        // 解析相对路径
+        targetPath = resolveRelativePath(currentDir, link)
+      }
+    }
+
+    // 调用打开文件处理
+    await handleOpenFile(targetPath)
+  } catch (error) {
+    console.error('打开本地文件链接失败:', error)
+    Message.error(`无法打开文件: ${link}`)
+  }
+}
+
+// 解析相对路径为绝对路径
+const resolveRelativePath = (basePath: string, relativePath: string): string => {
+  // 统一使用 / 作为分隔符
+  const base = basePath.replace(/\\/g, '/')
+  const relative = relativePath.replace(/\\/g, '/')
+
+  // 处理 ./ 和 ../
+  const parts = base.split('/')
+  const segments = relative.split('/')
+
+  for (const segment of segments) {
+    if (segment === '..') {
+      parts.pop()
+    } else if (segment !== '.' && segment !== '') {
+      parts.push(segment)
+    }
+  }
+
+  return parts.join('/')
+}
+
 const handleNavigateToZipDirectory = async (path: string) => {
   // 暂时不处理 ZIP
 }
diff --git a/web/src/utils/codeMirrorLoader.js b/web/src/utils/codeMirrorLoader.js
index 9e4d0da..b0d60bf 100644
--- a/web/src/utils/codeMirrorLoader.js
+++ b/web/src/utils/codeMirrorLoader.js
@@ -5,7 +5,8 @@
 
 import {
   javascript, json, yaml, html, css,
-  cpp, rust, go, python, php, sql, markdown, java
+  cpp, rust, go, python, php, sql, markdown, java,
+  shell, StreamLanguage
 } from './codemirrorExports'
 
 const languageCache = new Map()
@@ -68,6 +69,11 @@ export function loadLanguageExtension(language) {
     case 'java':
       extension = java()
       break
+    case 'shell':
+    case 'bash':
+    case 'sh':
+      extension = StreamLanguage.define(shell)
+      break
     default:
       return null
   }
@@ -100,7 +106,8 @@ export function getLanguageFromExtension(extension) {
     php: 'php',
     sql: 'sql',
     markdown: 'markdown', md: 'markdown',
-    java: 'java'
+    java: 'java',
+    sh: 'shell', bash: 'shell', shell: 'shell', zsh: 'shell'
   }
 
   return langMap[ext] || 'text'
diff --git a/web/src/utils/codemirrorExports.js b/web/src/utils/codemirrorExports.js
index 885454f..e452635 100644
--- a/web/src/utils/codemirrorExports.js
+++ b/web/src/utils/codemirrorExports.js
@@ -24,3 +24,6 @@ export { php } from '@codemirror/lang-php'
 export { sql } from '@codemirror/lang-sql'
 export { markdown } from '@codemirror/lang-markdown'
 export { java } from '@codemirror/lang-java'
+
+// Legacy language modes (shell)
+export { shell } from '@codemirror/legacy-modes/mode/shell'
diff --git a/web/src/utils/markedExtensions.ts b/web/src/utils/markedExtensions.ts
index ae9473d..9b8a5d0 100644
--- a/web/src/utils/markedExtensions.ts
+++ b/web/src/utils/markedExtensions.ts
@@ -1,9 +1,26 @@
 import { marked } from 'marked'
 import hljs from 'highlight.js'
 import 'highlight.js/lib/common'
+// 额外导入 common 包不包含的语言
+import 'highlight.js/lib/languages/bash'
+import 'highlight.js/lib/languages/go'
 import 'highlight.js/styles/github-dark.css'
 import 'highlight.js/styles/github.css'
 
+// 语言别名映射（sh -> bash 等）
+const languageAliases: Record<string, string> = {
+  'sh': 'bash',
+  'shell': 'bash',
+  'zsh': 'bash',
+  'ksh': 'bash',
+  'ts': 'typescript',
+  'js': 'javascript',
+  'py': 'python',
+  'rb': 'ruby',
+  'yml': 'yaml',
+  'md': 'markdown'
+}
+
 let mermaidInstance: typeof import('mermaid').default | null = null
 
 async function loadMermaid() {
@@ -30,7 +47,15 @@ renderer.code = function(token: any) {
     return `<pre class="mermaid">${token.text}</pre>`
   }
 
-  const lang = hljs.getLanguage(token.lang) ? token.lang : 'plaintext'
+  // 获取语言，支持别名
+  let lang = token.lang || 'plaintext'
+  lang = languageAliases[lang] || lang
+
+  // 检查语言是否支持
+  if (!hljs.getLanguage(lang)) {
+    lang = 'plaintext'
+  }
+
   const highlighted = hljs.highlight(token.text, { language: lang }).value
   return `<pre><code class="hljs language-${lang}" data-theme="auto">${highlighted}</code></pre>`
 }
@@ -53,6 +78,40 @@ renderer.heading = function(token: any) {
   </h${depth}>`
 }
 
+// 判断是否为本地文件链接（相对路径或本地绝对路径）
+const isLocalFileLink = (href: string): boolean => {
+  if (!href) return false
+  // 排除 http/https/ftp/mailto 等外部链接
+  if (/^(https?|ftp|mailto|tel|data):/i.test(href)) return false
+  // 排除锚点链接
+  if (href.startsWith('#')) return false
+  // 相对路径或本地路径（如 ./file.md, ../file.md, /path/to/file, C:\path\file）
+  return true
+}
+
+// 自定义链接渲染器 - 支持本地文件链接
+renderer.link = function(token: any) {
+  const href = token.href || ''
+  // 解析链接文本中的内联元素（如加粗、斜体等）
+  const text = this.parser.parseInline(token.tokens) || token.text || ''
+  const title = token.title || ''
+
+  const titleAttr = title ? ` title="${title}"` : ''
+
+  // 锚点链接 - 保持原样，页面内跳转
+  if (href.startsWith('#')) {
+    return `<a href="${href}"${titleAttr}>${text}</a>`
+  }
+
+  // 判断是否为本地文件链接
+  if (isLocalFileLink(href)) {
+    return `<a href="javascript:void(0)" data-local-link="${href}" class="local-file-link"${titleAttr}>${text}</a>`
+  }
+
+  // 外部链接使用默认行为
+  return `<a href="${href}" target="_blank" rel="noopener noreferrer"${titleAttr}>${text}</a>`
+}
+
 marked.use({ renderer, breaks: true, gfm: true })
 
 export { marked }