diff --git a/.gitignore b/.gitignore
index cd673e8..ebddbd9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,7 @@ client/dist
 /client/.cursor/
 /client/.idea/
 /server/uploads/
+/server/migrations/
+/server/nl-blog
+/client/dist.zip
+/nl_blog线上.sql
diff --git a/client/src/components/CodeBlock.vue b/client/src/components/CodeBlock.vue
index 029b2a5..6a281e3 100644
--- a/client/src/components/CodeBlock.vue
+++ b/client/src/components/CodeBlock.vue
@@ -3,8 +3,9 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted, watch, nextTick } from 'vue'
+import { ref, onMounted, watch, nextTick, computed } from 'vue'
 import hljs from 'highlight.js'
+import { resolveHighlightLanguage } from '../utils/codeHighlight'
 
 const props = defineProps<{
   code: string
@@ -13,11 +14,10 @@ const props = defineProps<{
 
 const codeBlock = ref<HTMLElement | null>(null)
 
-const languageClass = `language-${props.language || 'plaintext'}`
+const languageClass = computed(() => `language-${resolveHighlightLanguage(props.language)}`)
 
 const highlight = () => {
   if (codeBlock.value) {
-    // Reset internal state if needed, though highlighting overwrites innerHTML
     delete codeBlock.value.dataset.highlighted
     hljs.highlightElement(codeBlock.value)
   }
@@ -27,7 +27,7 @@ onMounted(() => {
   highlight()
 })
 
-watch(() => props.code, () => {
+watch(() => [props.code, props.language], () => {
   nextTick(highlight)
 })
-</script>
\ No newline at end of file
+</script>
diff --git a/client/src/components/SnippetModal.vue b/client/src/components/SnippetModal.vue
index 529e645..cda3b93 100644
--- a/client/src/components/SnippetModal.vue
+++ b/client/src/components/SnippetModal.vue
@@ -10,7 +10,6 @@
       class="relative z-[101] bg-[#0a0a0c] border border-white/10 w-full max-w-6xl h-[80vh] rounded-2xl flex flex-col overflow-hidden shadow-2xl transform transition-transform duration-300"
       :class="{ 'scale-95': isAnimating, 'scale-100': !isAnimating }"
     >
-      <!-- Header -->
       <div class="h-16 border-b border-white/10 flex items-center justify-between px-6 bg-white/5">
         <div class="flex items-center gap-3">
           <i data-lucide="code-2" class="text-art-accent"></i>
@@ -21,9 +20,7 @@
         </button>
       </div>
 
-      <!-- Content -->
       <div class="flex-1 flex flex-col md:flex-row h-full overflow-hidden">
-        <!-- Code Section -->
         <div class="w-full md:w-1/2 bg-[#0d0d0d] overflow-auto p-6 border-r border-white/10 relative group">
           <button class="absolute top-4 right-4 text-xs bg-white/10 px-2 py-1 rounded text-white/50 hover:text-white z-10" @click="copyCode">
             复制
@@ -31,42 +28,18 @@
           <pre class="font-mono text-sm leading-relaxed"><code ref="codeBlock" :class="languageClass">{{ code }}</code></pre>
         </div>
 
-        <!-- Preview Section -->
-        <div class="w-full md:w-1/2 relative flex items-center justify-center overflow-hidden bg-[#1a1a1a]" :style="previewBackgroundStyle">
-           
-           <!-- Mouse Preview -->
-           <div v-if="type === 'mouse'" class="flex flex-col items-center justify-center p-8 border border-white/20 rounded-xl bg-black/50 backdrop-blur text-white transition-all duration-75" :style="mouseBoxStyle">
-              <div class="text-4xl font-mono mb-2">{{ mouseX }}, {{ mouseY }}</div>
-              <div class="text-xs text-white/50">在此区域移动鼠标</div>
-           </div>
-
-           <!-- Glass Preview -->
-           <div v-else-if="type === 'glass'" class="relative w-64 h-64 flex items-center justify-center">
-              <div class="absolute top-0 left-0 w-32 h-32 bg-purple-500 rounded-full mix-blend-multiply filter blur-xl opacity-70 animate-float"></div>
-              <div class="absolute bottom-0 right-0 w-32 h-32 bg-yellow-500 rounded-full mix-blend-multiply filter blur-xl opacity-70 animate-float" style="animation-delay: 2s"></div>
-              <div class="glass-panel relative z-10 w-48 h-32 flex items-center justify-center text-white font-bold text-lg">
-                Glass Card
-              </div>
-           </div>
-
-           <!-- Noise Preview -->
-           <div v-else-if="type === 'noise'" class="w-64 h-64 bg-[#222] rounded-xl relative overflow-hidden flex items-center justify-center border border-white/10">
-              <svg class="absolute inset-0 w-full h-full opacity-50">
-                <filter id="noiseFilter">
-                  <feTurbulence type="fractalNoise" baseFrequency="0.65" numOctaves="3" stitchTiles="stitch"/>
-                </filter>
-                <rect width="100%" height="100%" filter="url(#noiseFilter)" opacity="1"/>
-              </svg>
-              <div class="relative z-10 text-white font-bold text-2xl tracking-widest">NOISE</div>
-           </div>
-
-           <!-- Animation Preview -->
-           <div v-else-if="type === 'animate'" class="flex flex-col items-center gap-4">
-              <div class="w-16 h-16 bg-art-accent rounded-lg animate-float"></div>
-              <div class="text-white/50 font-mono">Floating Animation</div>
-           </div>
-
-           <div v-else class="text-white/30 font-mono">预览不可用</div>
+        <div class="w-full md:w-1/2 relative flex flex-col overflow-hidden bg-[#1a1a1a]" :style="previewBackgroundStyle">
+          <iframe
+            v-if="showHtmlPreview"
+            class="w-full h-full border-0 bg-white"
+            sandbox="allow-scripts"
+            :srcdoc="code"
+          />
+          <div v-else class="flex-1 overflow-auto p-8 text-white/80">
+            <h4 class="text-sm text-art-muted mb-3">备注</h4>
+            <p v-if="description" class="text-sm leading-relaxed whitespace-pre-wrap">{{ description }}</p>
+            <p v-else class="text-sm text-white/30 font-mono">暂无备注</p>
+          </div>
         </div>
       </div>
     </div>
@@ -77,31 +50,32 @@
 <script setup lang="ts">
 import { ref, watch, computed, nextTick } from 'vue'
 import hljs from 'highlight.js'
+import type { CodeType } from '../services/api'
+import { resolveHighlightLanguage, isHtmlFrontendType } from '../utils/codeHighlight'
 
 const props = defineProps<{
   isOpen: boolean
   title: string
   code: string
-  type: string
+  type?: string
+  codeType?: CodeType | null
+  description?: string
 }>()
 
 const emit = defineEmits(['close'])
 
 const isAnimating = ref(true)
-const mouseX = ref(0)
-const mouseY = ref(0)
 const codeBlock = ref<HTMLElement | null>(null)
 
-const languageClass = computed(() => {
-  const map: Record<string, string> = {
-    'mouse': 'javascript',
-    'glass': 'css',
-    'noise': 'xml',
-    'animate': 'css'
-  }
-  return `language-${map[props.type] || 'plaintext'}`
+const highlightLang = computed(() => {
+  if (props.codeType?.name) return props.codeType.name
+  return props.type || 'plaintext'
 })
 
+const languageClass = computed(() => `language-${resolveHighlightLanguage(highlightLang.value)}`)
+
+const showHtmlPreview = computed(() => isHtmlFrontendType(props.codeType ?? null))
+
 const highlightCode = () => {
   if (codeBlock.value) {
     delete codeBlock.value.dataset.highlighted
@@ -109,35 +83,23 @@ const highlightCode = () => {
   }
 }
 
-// Watch isOpen to handle entry/exit animations
 watch(() => props.isOpen, (newVal) => {
   if (newVal) {
     document.body.style.overflow = 'hidden'
-    // Entry animation
-    setTimeout(() => {
-      isAnimating.value = false
-    }, 10)
-    
-    // Initialize icons if needed
-    setTimeout(() => {
-       if (window.lucide) window.lucide.createIcons()
-    }, 50)
-
-    // Highlight code
-    nextTick(() => {
-      highlightCode()
-    })
+    setTimeout(() => { isAnimating.value = false }, 10)
+    setTimeout(() => { if (window.lucide) window.lucide.createIcons() }, 50)
+    nextTick(highlightCode)
   } else {
     document.body.style.overflow = ''
     isAnimating.value = true
   }
 })
 
+watch(() => props.code, () => nextTick(highlightCode))
+
 const close = () => {
   isAnimating.value = true
-  setTimeout(() => {
-    emit('close')
-  }, 300)
+  setTimeout(() => emit('close'), 300)
 }
 
 const copyCode = () => {
@@ -145,37 +107,6 @@ const copyCode = () => {
   alert('代码已复制')
 }
 
-// Mouse movement logic for 'mouse' type
-const handleMouseMove = (e: MouseEvent) => {
-  if (props.type !== 'mouse') return
-  
-  // Find the preview container
-  const container = (e.target as HTMLElement).closest('.preview-area') || (e.target as HTMLElement)
-  if (!container) return
-
-  const rect = container.getBoundingClientRect()
-  mouseX.value = Math.floor(e.clientX - rect.left)
-  mouseY.value = Math.floor(e.clientY - rect.top)
-}
-
-// Global mouse listener when modal is open and type is mouse
-watch(() => [props.isOpen, props.type], ([open, type]) => {
-  if (open && type === 'mouse') {
-    window.addEventListener('mousemove', handleMouseMove)
-  } else {
-    window.removeEventListener('mousemove', handleMouseMove)
-  }
-})
-
-const mouseBoxStyle = computed(() => {
-  // Parallax effect
-  const xOffset = (mouseX.value - 200) / 20 // Approx center offset
-  const yOffset = (mouseY.value - 200) / 20
-  return {
-    transform: `translate(${xOffset}px, ${yOffset}px)`
-  }
-})
-
 const previewBackgroundStyle = {
   backgroundImage: `
     linear-gradient(45deg, #1a1a1a 25%, transparent 25%), 
@@ -186,23 +117,3 @@ const previewBackgroundStyle = {
   backgroundPosition: '0 0, 0 10px, 10px -10px, -10px 0px'
 }
 </script>
-
-<style scoped>
-.glass-panel {
-  background: rgba(255, 255, 255, 0.05);
-  backdrop-filter: blur(20px);
-  -webkit-backdrop-filter: blur(20px);
-  border: 1px solid rgba(255, 255, 255, 0.2);
-  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
-  border-radius: 16px;
-}
-
-.animate-float {
-  animation: float 6s ease-in-out infinite;
-}
-
-@keyframes float {
-  0%, 100% { transform: translateY(0); }
-  50% { transform: translateY(-20px); }
-}
-</style>
\ No newline at end of file
diff --git a/client/src/components/admin/AdminLayout.vue b/client/src/components/admin/AdminLayout.vue
index 7366ab8..fce6464 100644
--- a/client/src/components/admin/AdminLayout.vue
+++ b/client/src/components/admin/AdminLayout.vue
@@ -220,6 +220,7 @@ const menuItems = ref<MenuItem[]>([
       { title: '专栏管理', path: '/admin/columns', icon: '📚' },
       { title: '作品管理', path: '/admin/works', icon: '🎨' },
       { title: '代码片段', path: '/admin/snippets', icon: '💻' },
+      { title: '代码类型', path: '/admin/code-types', icon: '🏷️' },
       { title: '标签管理', path: '/admin/tags', icon: '🏷️' }
     ]
   },
diff --git a/client/src/components/admin/PostHistoryModal.vue b/client/src/components/admin/PostHistoryModal.vue
index a448f7a..76d3636 100644
--- a/client/src/components/admin/PostHistoryModal.vue
+++ b/client/src/components/admin/PostHistoryModal.vue
@@ -9,13 +9,12 @@
         <div class="flex items-center justify-between px-6 py-4 border-b border-white/10 shrink-0">
           <div>
             <h3 class="text-lg font-medium text-white">历史版本</h3>
-            <p class="text-xs text-art-muted mt-1">每次保存后生成新版本，可查看、对比或恢复</p>
+            <p class="text-xs text-art-muted mt-1">每次保存后生成新版本，vN 表示第 N 次保存后的内容</p>
           </div>
           <button type="button" class="text-art-muted hover:text-white" @click="emit('close')">✕</button>
         </div>
 
         <div class="flex-1 overflow-hidden flex min-h-0">
-          <!-- Version list -->
           <div class="w-72 border-r border-white/10 overflow-y-auto custom-scrollbar shrink-0">
             <div v-if="loading" class="p-6 text-center text-art-muted text-sm">加载中...</div>
             <div v-else-if="historyList.length === 0" class="p-6 text-center text-art-muted text-sm">暂无历史版本</div>
@@ -31,39 +30,18 @@
                 <span class="text-sm text-white font-medium">v{{ item.version }}</span>
                 <span class="text-xs text-art-muted">{{ item.modifiedAt }}</span>
               </div>
-              <p class="text-xs text-art-muted mt-1 truncate">{{ item.title }}</p>
+              <p class="text-xs text-art-muted mt-1 truncate">{{ item.modifiedByName || `用户#${item.modifiedBy}` }}</p>
+              <p class="text-xs text-white/70 mt-0.5 truncate">{{ item.title }}</p>
             </button>
           </div>
 
-          <!-- Detail / diff panel -->
           <div class="flex-1 overflow-y-auto custom-scrollbar p-6">
             <div v-if="viewMode === 'list'" class="text-sm text-art-muted">
               <p>点击版本可勾选（最多 2 个）进行对比，或点击下方操作。</p>
               <div class="mt-4 flex flex-wrap gap-2">
-                <button
-                  type="button"
-                  class="admin-btn-secondary text-xs"
-                  :disabled="selectedVersions.length !== 1"
-                  @click="viewVersion(selectedVersions[0])"
-                >
-                  查看选中版本
-                </button>
-                <button
-                  type="button"
-                  class="admin-btn-secondary text-xs"
-                  :disabled="selectedVersions.length !== 2"
-                  @click="compareVersions"
-                >
-                  对比选中版本
-                </button>
-                <button
-                  type="button"
-                  class="admin-btn-primary text-xs"
-                  :disabled="selectedVersions.length !== 1"
-                  @click="restoreVersion(selectedVersions[0])"
-                >
-                  恢复选中版本
-                </button>
+                <button type="button" class="admin-btn-secondary text-xs" :disabled="selectedVersions.length !== 1" @click="viewVersion(selectedVersions[0])">查看选中版本</button>
+                <button type="button" class="admin-btn-secondary text-xs" :disabled="selectedVersions.length !== 2" @click="compareVersions">对比选中版本</button>
+                <button type="button" class="admin-btn-primary text-xs" :disabled="selectedVersions.length !== 1" @click="restoreVersion(selectedVersions[0])">恢复选中版本</button>
               </div>
             </div>
 
@@ -74,8 +52,18 @@
               </div>
               <div class="space-y-3 text-sm">
                 <div><span class="text-art-muted">标题：</span><span class="text-white">{{ previewData.title }}</span></div>
+                <div><span class="text-art-muted">分类：</span><span class="text-white">{{ previewData.categoryName || '—' }}</span></div>
+                <div><span class="text-art-muted">专栏：</span><span class="text-white">{{ previewData.columnName || '—' }}</span></div>
+                <div><span class="text-art-muted">标签：</span><span class="text-white">{{ previewData.tagNames?.join(', ') || '—' }}</span></div>
+                <div><span class="text-art-muted">状态：</span><span class="text-white">{{ previewData.isPublished === 1 ? '已发布' : '草稿' }}</span></div>
+                <div><span class="text-art-muted">修改人：</span><span class="text-white">{{ previewData.modifiedByName || previewData.modifiedBy }}</span></div>
                 <div><span class="text-art-muted">摘要：</span><span class="text-white">{{ previewData.excerpt || '—' }}</span></div>
-                <pre class="bg-black/30 rounded-lg p-4 text-xs text-white/80 whitespace-pre-wrap max-h-96 overflow-y-auto">{{ previewData.content || '—' }}</pre>
+                <div>
+                  <span class="text-art-muted block mb-2">正文：</span>
+                  <div class="bg-black/30 rounded-lg p-4 max-h-96 overflow-y-auto prose prose-invert prose-sm max-w-none">
+                    <MdPreview :model-value="previewData.content || ''" theme="dark" />
+                  </div>
+                </div>
               </div>
             </div>
 
@@ -91,7 +79,7 @@
                   class="rounded-lg border p-4"
                   :class="field.changed ? 'border-art-accent/30 bg-art-accent/5' : 'border-white/5 bg-white/[0.02]'"
                 >
-                  <div class="text-xs uppercase tracking-wider text-art-muted mb-2">{{ key }}</div>
+                  <div class="text-xs uppercase tracking-wider text-art-muted mb-2">{{ fieldLabel(key) }}</div>
                   <template v-if="field.changed">
                     <div class="grid md:grid-cols-2 gap-3 text-xs">
                       <div>
@@ -103,7 +91,7 @@
                         <pre class="whitespace-pre-wrap bg-black/30 rounded p-2 text-white/70 max-h-40 overflow-y-auto">{{ field.to || '—' }}</pre>
                       </div>
                     </div>
-                    <pre v-if="field.diff" class="mt-2 text-xs text-art-accent/80 whitespace-pre-wrap">{{ field.diff }}</pre>
+                    <pre v-if="field.diff && key === 'content'" class="mt-2 text-xs text-art-accent/80 whitespace-pre-wrap max-h-48 overflow-y-auto">{{ field.diff }}</pre>
                   </template>
                   <div v-else class="text-xs text-art-muted">无变化</div>
                 </div>
@@ -118,6 +106,8 @@
 
 <script setup lang="ts">
 import { ref, watch } from 'vue'
+import { MdPreview } from 'md-editor-v3'
+import 'md-editor-v3/lib/preview.css'
 import {
   getPostHistory,
   getPostHistoryByVersion,
@@ -128,6 +118,16 @@ import {
 } from '../../services/api'
 import { useToast } from '../../composables/useToast'
 
+const FIELD_LABELS: Record<string, string> = {
+  title: '标题',
+  excerpt: '摘要',
+  content: '正文',
+  category: '分类',
+  column: '专栏',
+  tags: '标签',
+  isPublished: '发布状态'
+}
+
 const props = defineProps<{
   isOpen: boolean
   postId: number | string
@@ -146,6 +146,8 @@ const viewMode = ref<'list' | 'preview' | 'diff'>('list')
 const previewData = ref<PostHistory | null>(null)
 const diffData = ref<PostHistoryDiff | null>(null)
 
+const fieldLabel = (key: string | number) => FIELD_LABELS[String(key)] || String(key)
+
 const loadHistory = async () => {
   if (!props.postId) return
   loading.value = true
@@ -220,11 +222,6 @@ watch(
 </script>
 
 <style scoped>
-.custom-scrollbar::-webkit-scrollbar {
-  width: 4px;
-}
-.custom-scrollbar::-webkit-scrollbar-thumb {
-  background: rgba(255, 255, 255, 0.1);
-  border-radius: 2px;
-}
+.custom-scrollbar::-webkit-scrollbar { width: 4px; }
+.custom-scrollbar::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.1); border-radius: 2px; }
 </style>
diff --git a/client/src/components/admin/UserPickerPopover.vue b/client/src/components/admin/UserPickerPopover.vue
new file mode 100644
index 0000000..81264a8
--- /dev/null
+++ b/client/src/components/admin/UserPickerPopover.vue
@@ -0,0 +1,274 @@
+<template>
+  <div ref="rootRef" class="user-picker relative">
+    <button type="button" class="picker-trigger" @click.stop="toggleOpen">
+      <span v-if="selectedUser" class="selected-text">{{ selectedUser.username }}</span>
+      <span v-else class="placeholder">选择操作人</span>
+      <span v-if="selectedUser" class="clear-btn" @click.stop="clearSelection">✕</span>
+    </button>
+
+    <div v-if="isOpen" class="popover-card" @click.stop>
+      <input
+        v-model="searchKeyword"
+        type="text"
+        class="search-input"
+        placeholder="搜索账号或邮箱..."
+        @input="handleSearch"
+      />
+      <div v-if="loading" class="popover-empty">加载中...</div>
+      <div v-else-if="users.length === 0" class="popover-empty">暂无用户</div>
+      <ul v-else class="user-list">
+        <li
+          v-for="user in users"
+          :key="user.id"
+          class="user-item"
+          :class="{ active: modelValue === user.id }"
+          @click="selectUser(user)"
+        >
+          <span class="user-name">{{ user.username }}</span>
+          <span class="user-email">{{ user.email }}</span>
+        </li>
+      </ul>
+      <div v-if="total > pageSize" class="popover-pagination">
+        <button type="button" :disabled="currentPage <= 1" @click="goPage(currentPage - 1)">上一页</button>
+        <span>{{ currentPage }} / {{ totalPages }}</span>
+        <button type="button" :disabled="currentPage >= totalPages" @click="goPage(currentPage + 1)">下一页</button>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, watch, onMounted, onUnmounted } from 'vue'
+import { getUsersPaginated, type User } from '../../services/api'
+
+const props = defineProps<{
+  modelValue?: number | null
+}>()
+
+const emit = defineEmits<{
+  'update:modelValue': [value: number | null]
+}>()
+
+const rootRef = ref<HTMLElement | null>(null)
+const isOpen = ref(false)
+const loading = ref(false)
+const users = ref<User[]>([])
+const total = ref(0)
+const currentPage = ref(1)
+const pageSize = 10
+const searchKeyword = ref('')
+const selectedUser = ref<User | null>(null)
+
+let searchTimer: ReturnType<typeof setTimeout> | null = null
+
+const totalPages = computed(() => Math.max(1, Math.ceil(total.value / pageSize)))
+
+const loadUsers = async () => {
+  loading.value = true
+  try {
+    const result = await getUsersPaginated({
+      page: currentPage.value,
+      pageSize,
+      keyword: searchKeyword.value || undefined
+    })
+    users.value = result.list
+    total.value = result.total
+    if (props.modelValue) {
+      const found = result.list.find(u => u.id === props.modelValue)
+      if (found) selectedUser.value = found
+    }
+  } finally {
+    loading.value = false
+  }
+}
+
+const toggleOpen = () => {
+  isOpen.value = !isOpen.value
+  if (isOpen.value) {
+    currentPage.value = 1
+    loadUsers()
+  }
+}
+
+const handleSearch = () => {
+  if (searchTimer) clearTimeout(searchTimer)
+  searchTimer = setTimeout(() => {
+    currentPage.value = 1
+    loadUsers()
+  }, 300)
+}
+
+const goPage = (page: number) => {
+  currentPage.value = page
+  loadUsers()
+}
+
+const selectUser = (user: User) => {
+  selectedUser.value = user
+  emit('update:modelValue', user.id)
+  isOpen.value = false
+}
+
+const clearSelection = () => {
+  selectedUser.value = null
+  emit('update:modelValue', null)
+}
+
+const handleClickOutside = (e: MouseEvent) => {
+  if (rootRef.value && !rootRef.value.contains(e.target as Node)) {
+    isOpen.value = false
+  }
+}
+
+watch(() => props.modelValue, async (id) => {
+  if (!id) {
+    selectedUser.value = null
+    return
+  }
+  if (selectedUser.value?.id === id) return
+  const result = await getUsersPaginated({ page: 1, pageSize: 1, keyword: String(id) })
+  const found = result.list.find(u => u.id === id)
+  if (found) {
+    selectedUser.value = found
+  } else {
+    try {
+      const { fetchUser } = await import('../../services/api')
+      selectedUser.value = await fetchUser(id)
+    } catch {
+      selectedUser.value = null
+    }
+  }
+}, { immediate: true })
+
+onMounted(() => document.addEventListener('click', handleClickOutside))
+onUnmounted(() => document.removeEventListener('click', handleClickOutside))
+</script>
+
+<style scoped>
+.user-picker {
+  min-width: 160px;
+}
+
+.picker-trigger {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  width: 100%;
+  padding: 0.5rem 0.75rem;
+  background: rgba(255, 255, 255, 0.05);
+  border: 1px solid rgba(255, 255, 255, 0.2);
+  border-radius: 0.375rem;
+  color: white;
+  font-size: 0.875rem;
+  cursor: pointer;
+  text-align: left;
+}
+
+.placeholder {
+  color: rgba(255, 255, 255, 0.4);
+}
+
+.selected-text {
+  flex: 1;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.clear-btn {
+  color: rgba(255, 255, 255, 0.4);
+  font-size: 0.75rem;
+  padding: 0 0.25rem;
+}
+
+.clear-btn:hover {
+  color: white;
+}
+
+.popover-card {
+  position: absolute;
+  top: calc(100% + 4px);
+  left: 0;
+  z-index: 100;
+  width: 280px;
+  background: #1a1a1e;
+  border: 1px solid rgba(255, 255, 255, 0.15);
+  border-radius: 0.5rem;
+  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
+  overflow: hidden;
+}
+
+.search-input {
+  width: 100%;
+  padding: 0.625rem 0.75rem;
+  background: rgba(255, 255, 255, 0.05);
+  border: none;
+  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
+  color: white;
+  font-size: 0.875rem;
+  outline: none;
+}
+
+.user-list {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+  max-height: 240px;
+  overflow-y: auto;
+}
+
+.user-item {
+  padding: 0.625rem 0.75rem;
+  cursor: pointer;
+  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
+  display: flex;
+  flex-direction: column;
+  gap: 0.125rem;
+}
+
+.user-item:hover,
+.user-item.active {
+  background: rgba(212, 179, 131, 0.1);
+}
+
+.user-name {
+  font-size: 0.875rem;
+  color: white;
+}
+
+.user-email {
+  font-size: 0.75rem;
+  color: rgba(255, 255, 255, 0.45);
+}
+
+.popover-empty {
+  padding: 1.5rem;
+  text-align: center;
+  color: rgba(255, 255, 255, 0.4);
+  font-size: 0.875rem;
+}
+
+.popover-pagination {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 0.5rem 0.75rem;
+  border-top: 1px solid rgba(255, 255, 255, 0.1);
+  font-size: 0.75rem;
+  color: rgba(255, 255, 255, 0.5);
+}
+
+.popover-pagination button {
+  background: none;
+  border: none;
+  color: #d4b383;
+  cursor: pointer;
+  font-size: 0.75rem;
+  padding: 0.25rem;
+}
+
+.popover-pagination button:disabled {
+  color: rgba(255, 255, 255, 0.2);
+  cursor: not-allowed;
+}
+</style>
diff --git a/client/src/pages/Snippets.vue b/client/src/pages/Snippets.vue
index 8170b87..56f9ee7 100644
--- a/client/src/pages/Snippets.vue
+++ b/client/src/pages/Snippets.vue
@@ -40,7 +40,7 @@
           </div>
           <!-- Code Preview (Styled) -->
           <div class="p-6 overflow-hidden font-mono text-sm leading-relaxed pointer-events-none opacity-80 group-hover:opacity-100 transition-opacity">
-            <pre class="whitespace-pre-wrap break-all line-clamp-4"><CodeBlock :code="snippet.code" :language="getSnippetLang(snippet.type)" /></pre>
+            <pre class="whitespace-pre-wrap break-all line-clamp-4"><CodeBlock :code="snippet.code" :language="snippetLang(snippet)" /></pre>
           </div>
         </div>
       </div>
@@ -52,6 +52,8 @@
       :title="currentSnippet.title" 
       :code="currentSnippet.code" 
       :type="currentSnippet.type"
+      :code-type="currentSnippet.codeType"
+      :description="currentSnippet.description"
       @close="closeSnippet"
     />
   </section>
@@ -63,6 +65,7 @@ import { fetchSnippets, Snippet } from '../services/api'
 import { useScrollAnimation } from '../composables/useScrollAnimation'
 import SnippetModal from '../components/SnippetModal.vue'
 import CodeBlock from '../components/CodeBlock.vue'
+import { resolveHighlightLanguage } from '../utils/codeHighlight'
 
 const snippets = ref<Snippet[]>([])
 const loading = ref(false)
@@ -143,14 +146,8 @@ export const useMousePosition = () => {
   }
 }
 
-const getSnippetLang = (type: string) => {
-  const map: Record<string, string> = {
-    'mouse': 'javascript',
-    'glass': 'css',
-    'noise': 'xml',
-    'animate': 'css'
-  }
-  return map[type] || 'plaintext'
+const snippetLang = (snippet: Snippet) => {
+  return resolveHighlightLanguage(snippet.codeType?.name || snippet.type)
 }
 
 const openSnippet = (snippet: Snippet) => {
diff --git a/client/src/pages/admin/AccessLogs.vue b/client/src/pages/admin/AccessLogs.vue
index c401af8..9974763 100644
--- a/client/src/pages/admin/AccessLogs.vue
+++ b/client/src/pages/admin/AccessLogs.vue
@@ -5,13 +5,28 @@
     <div class="toolbar">
       <div class="filter-section">
         <div class="filter-group">
-          <label for="pageSize">每页显示:</label>
-          <CustomSelect
-            v-model.number="pageSize"
-            :options="pageSizeOptions"
-            @update:modelValue="fetchLogs"
-            style="width: 80px;"
-          />
+          <label>路由</label>
+          <input v-model="filters.path" type="text" class="filter-input" placeholder="模糊搜索路径" @keyup.enter="handleSearch" />
+        </div>
+        <div class="filter-group">
+          <label>归属地</label>
+          <input v-model="filters.region" type="text" class="filter-input" placeholder="模糊搜索归属地" @keyup.enter="handleSearch" />
+        </div>
+        <div class="filter-group">
+          <label>开始时间</label>
+          <input v-model="startDateTime" type="datetime-local" class="filter-input datetime-input" />
+        </div>
+        <div class="filter-group">
+          <label>结束时间</label>
+          <input v-model="endDateTime" type="datetime-local" class="filter-input datetime-input" />
+        </div>
+        <div class="filter-group">
+          <label>每页</label>
+          <CustomSelect v-model.number="pageSize" :options="pageSizeOptions" style="width: 80px;" />
+        </div>
+        <div class="filter-actions">
+          <button type="button" class="btn btn-sm btn-primary" @click="handleSearch">查询</button>
+          <button type="button" class="btn btn-sm btn-secondary" @click="resetFilters">重置</button>
         </div>
       </div>
     </div>
@@ -81,12 +96,14 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted, computed } from 'vue'
+import { ref, onMounted, computed, reactive } from 'vue'
 import { getAccessLogs, PaginationResponse, AccessLog } from '../../services/api'
 import { useToast } from '../../composables/useToast'
 import CustomSelect from '../../components/CustomSelect.vue'
+import { getDefaultMonthRange, toApiDateTime } from '../../utils/dateRange'
 
 const toast = useToast()
+const defaultRange = getDefaultMonthRange()
 const logs = ref<PaginationResponse<AccessLog>>({
   list: [],
   total: 0,
@@ -95,8 +112,14 @@ const logs = ref<PaginationResponse<AccessLog>>({
 })
 const currentPage = ref(1)
 const pageSize = ref(10)
+const startDateTime = ref(defaultRange.start)
+const endDateTime = ref(defaultRange.end)
+
+const filters = reactive({
+  path: '',
+  region: ''
+})
 
-// Select options
 const pageSizeOptions = [
   { value: 10, label: '10' },
   { value: 20, label: '20' },
@@ -104,19 +127,39 @@ const pageSizeOptions = [
   { value: 100, label: '100' }
 ]
 
-const totalPages = computed(() => {
-  return Math.ceil(logs.value.total / pageSize.value)
+const totalPages = computed(() => Math.ceil(logs.value.total / pageSize.value) || 1)
+
+const buildFilters = () => ({
+  path: filters.path || undefined,
+  region: filters.region || undefined,
+  startDate: toApiDateTime(startDateTime.value) || undefined,
+  endDate: toApiDateTime(endDateTime.value) || undefined
 })
 
 const fetchLogs = async () => {
   try {
-    logs.value = await getAccessLogs(currentPage.value, pageSize.value)
+    logs.value = await getAccessLogs(currentPage.value, pageSize.value, buildFilters())
   } catch (error) {
     console.error('Error fetching access logs:', error)
     toast.error('获取访问日志失败')
   }
 }
 
+const handleSearch = () => {
+  currentPage.value = 1
+  fetchLogs()
+}
+
+const resetFilters = () => {
+  const range = getDefaultMonthRange()
+  filters.path = ''
+  filters.region = ''
+  startDateTime.value = range.start
+  endDateTime.value = range.end
+  currentPage.value = 1
+  fetchLogs()
+}
+
 const changePage = (page: number) => {
   currentPage.value = page
   fetchLogs()
@@ -159,19 +202,48 @@ onMounted(() => {
 
 .toolbar {
   margin-bottom: 1rem;
-  display: flex;
-  justify-content: flex-end;
 }
 
 .filter-section {
   display: flex;
-  gap: 1rem;
+  flex-wrap: wrap;
+  gap: 0.75rem 1rem;
+  align-items: flex-end;
+  background: rgba(255, 255, 255, 0.05);
+  padding: 1rem;
+  border-radius: 0.5rem;
+  border: 1px solid rgba(255, 255, 255, 0.1);
+}
+
+.filter-actions {
+  display: flex;
+  gap: 0.5rem;
+}
+
+.filter-input {
+  padding: 0.5rem 0.75rem;
+  border: 1px solid rgba(255, 255, 255, 0.2);
+  border-radius: 0.375rem;
+  font-size: 0.875rem;
+  background: rgba(255, 255, 255, 0.05);
+  color: white;
+  font-family: 'Inter', sans-serif;
+  min-width: 140px;
+}
+
+.datetime-input {
+  min-width: 180px;
+}
+
+.filter-input:focus {
+  outline: none;
+  border-color: #d4b383;
 }
 
 .filter-group {
   display: flex;
-  align-items: center;
-  gap: 0.5rem;
+  flex-direction: column;
+  gap: 0.25rem;
 }
 
 .filter-group label {
@@ -310,6 +382,17 @@ onMounted(() => {
   font-size: 0.875rem;
 }
 
+.btn-primary {
+  background-color: #d4b383;
+  color: #050505;
+  border-color: #d4b383;
+}
+
+.btn-primary:hover {
+  background-color: transparent;
+  color: #d4b383;
+}
+
 .btn-secondary {
   background-color: rgba(255, 255, 255, 0.1);
   color: rgba(255, 255, 255, 0.8);
diff --git a/client/src/pages/admin/CodeTypeForm.vue b/client/src/pages/admin/CodeTypeForm.vue
new file mode 100644
index 0000000..c58e6a5
--- /dev/null
+++ b/client/src/pages/admin/CodeTypeForm.vue
@@ -0,0 +1,82 @@
+<template>
+  <div class="code-type-form-container">
+    <h1 class="page-title">{{ isEdit ? '编辑代码类型' : '新建代码类型' }}</h1>
+
+    <div class="form-card">
+      <form @submit.prevent="submitForm">
+        <div class="form-group">
+          <label class="form-label">名称</label>
+          <input v-model="form.name" type="text" class="form-input" placeholder="如 html、javascript" required />
+        </div>
+        <div class="form-group">
+          <label class="form-label">分类</label>
+          <CustomSelect v-model.number="form.category" :options="categoryOptions" />
+        </div>
+        <div class="form-actions">
+          <button type="button" class="btn-secondary" @click="router.back()">取消</button>
+          <button type="submit" class="btn-primary">{{ isEdit ? '保存修改' : '创建类型' }}</button>
+        </div>
+      </form>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, onMounted } from 'vue'
+import { useRouter, useRoute } from 'vue-router'
+import CustomSelect from '../../components/CustomSelect.vue'
+import { useToast } from '../../composables/useToast'
+import { getAdminCodeTypes, createCodeType, updateCodeType } from '../../services/api'
+
+const router = useRouter()
+const route = useRoute()
+const toast = useToast()
+const isEdit = computed(() => !!route.params.id)
+
+const form = ref({ name: '', category: 0 })
+
+const categoryOptions = [
+  { value: 0, label: '前端' },
+  { value: 1, label: '后端' },
+  { value: 2, label: '其他' }
+]
+
+const loadDetail = async () => {
+  if (!isEdit.value) return
+  const id = parseInt(route.params.id as string, 10)
+  const list = await getAdminCodeTypes()
+  const item = list.find(ct => ct.id === id)
+  if (item) {
+    form.value = { name: item.name, category: item.category }
+  }
+}
+
+const submitForm = async () => {
+  try {
+    if (isEdit.value) {
+      await updateCodeType(parseInt(route.params.id as string, 10), form.value)
+      toast.success('更新成功')
+    } else {
+      await createCodeType(form.value)
+      toast.success('创建成功')
+    }
+    router.push('/admin/code-types')
+  } catch (error: any) {
+    toast.error(error.message || '提交失败')
+  }
+}
+
+onMounted(loadDetail)
+</script>
+
+<style scoped>
+.code-type-form-container { width: 100%; max-width: 560px; }
+.page-title { font-size: 1.75rem; font-weight: 600; color: #d4b383; margin-bottom: 1.5rem; }
+.form-card { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-radius: 0.5rem; padding: 1.5rem; }
+.form-group { margin-bottom: 1.25rem; }
+.form-label { display: block; margin-bottom: 0.5rem; color: rgba(255,255,255,0.8); font-size: 0.875rem; }
+.form-input { width: 100%; padding: 0.625rem 0.75rem; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.2); border-radius: 0.375rem; color: white; }
+.form-actions { display: flex; gap: 0.75rem; justify-content: flex-end; margin-top: 1.5rem; }
+.btn-primary { background: #d4b383; color: #050505; border: none; padding: 0.5rem 1rem; border-radius: 0.375rem; cursor: pointer; }
+.btn-secondary { background: rgba(255,255,255,0.1); color: white; border: 1px solid rgba(255,255,255,0.2); padding: 0.5rem 1rem; border-radius: 0.375rem; cursor: pointer; }
+</style>
diff --git a/client/src/pages/admin/CodeTypes.vue b/client/src/pages/admin/CodeTypes.vue
new file mode 100644
index 0000000..3f8261a
--- /dev/null
+++ b/client/src/pages/admin/CodeTypes.vue
@@ -0,0 +1,89 @@
+<template>
+  <div class="code-types-container">
+    <h1 class="page-title">代码类型管理</h1>
+
+    <div class="action-bar">
+      <button class="btn-primary" @click="router.push('/admin/code-types/create')">
+        <span class="btn-icon">➕</span>
+        新建类型
+      </button>
+    </div>
+
+    <div class="table-container">
+      <table class="admin-table">
+        <thead>
+          <tr>
+            <th>ID</th>
+            <th>名称</th>
+            <th>分类</th>
+            <th>操作</th>
+          </tr>
+        </thead>
+        <tbody>
+          <tr v-for="item in codeTypes" :key="item.id">
+            <td>{{ item.id }}</td>
+            <td>{{ item.name }}</td>
+            <td>
+              <span class="category-badge">{{ categoryLabel(item.category) }}</span>
+            </td>
+            <td class="actions">
+              <button class="btn-edit" @click="router.push(`/admin/code-types/${item.id}/edit`)">✏️</button>
+              <button class="btn-delete" @click="handleDelete(item.id)">🗑️</button>
+            </td>
+          </tr>
+        </tbody>
+      </table>
+      <div v-if="codeTypes.length === 0" class="empty-state">暂无代码类型</div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, onMounted } from 'vue'
+import { useRouter } from 'vue-router'
+import { getAdminCodeTypes, deleteCodeType, CODE_TYPE_CATEGORY_LABELS, type CodeType } from '../../services/api'
+import { useToast } from '../../composables/useToast'
+
+const router = useRouter()
+const toast = useToast()
+const codeTypes = ref<CodeType[]>([])
+
+const categoryLabel = (category: number) => CODE_TYPE_CATEGORY_LABELS[category] ?? '未知'
+
+const fetchList = async () => {
+  try {
+    codeTypes.value = await getAdminCodeTypes()
+  } catch (error) {
+    console.error(error)
+    toast.error('加载代码类型失败')
+  }
+}
+
+const handleDelete = async (id: number) => {
+  if (!confirm('确定删除该代码类型吗？')) return
+  try {
+    await deleteCodeType(id)
+    toast.success('删除成功')
+    fetchList()
+  } catch (error: any) {
+    toast.error(error.message || '删除失败')
+  }
+}
+
+onMounted(fetchList)
+</script>
+
+<style scoped>
+.code-types-container { width: 100%; }
+.page-title { font-size: 1.75rem; font-weight: 600; color: #d4b383; margin-bottom: 1.5rem; }
+.action-bar { margin-bottom: 1rem; }
+.btn-primary { background: #d4b383; color: #050505; border: none; padding: 0.5rem 1rem; border-radius: 0.375rem; cursor: pointer; font-weight: 500; }
+.table-container { background: rgba(255,255,255,0.05); border-radius: 0.5rem; border: 1px solid rgba(255,255,255,0.1); overflow: hidden; }
+.admin-table { width: 100%; border-collapse: collapse; color: white; }
+.admin-table th, .admin-table td { padding: 0.75rem 1rem; text-align: left; border-bottom: 1px solid rgba(255,255,255,0.1); }
+.admin-table th { color: #d4b383; background: rgba(255,255,255,0.08); }
+.category-badge { padding: 0.125rem 0.5rem; border-radius: 9999px; font-size: 0.75rem; background: rgba(212,179,131,0.15); color: #d4b383; }
+.actions { display: flex; gap: 0.5rem; }
+.btn-edit, .btn-delete { background: none; border: none; cursor: pointer; font-size: 1rem; }
+.empty-state { padding: 2rem; text-align: center; color: rgba(255,255,255,0.5); }
+</style>
diff --git a/client/src/pages/admin/Logs.vue b/client/src/pages/admin/Logs.vue
index 38a5468..af0cec8 100644
--- a/client/src/pages/admin/Logs.vue
+++ b/client/src/pages/admin/Logs.vue
@@ -5,14 +5,41 @@
     <div class="toolbar">
       <div class="filter-section">
         <div class="filter-group">
-          <label for="pageSize">每页显示:</label>
+          <label>操作描述</label>
+          <input v-model="filters.action" type="text" class="filter-input" placeholder="模糊搜索" @keyup.enter="handleSearch" />
+        </div>
+        <div class="filter-group">
+          <label>方法</label>
+          <CustomSelect v-model="filters.method" :options="methodOptions" style="width: 100px;" />
+        </div>
+        <div class="filter-group">
+          <label>状态</label>
+          <CustomSelect v-model.number="filters.status" :options="statusOptions" style="width: 100px;" />
+        </div>
+        <div class="filter-group">
+          <label>操作人</label>
+          <UserPickerPopover v-model="filters.userId" />
+        </div>
+        <div class="filter-group">
+          <label>开始时间</label>
+          <input v-model="startDateTime" type="datetime-local" class="filter-input datetime-input" />
+        </div>
+        <div class="filter-group">
+          <label>结束时间</label>
+          <input v-model="endDateTime" type="datetime-local" class="filter-input datetime-input" />
+        </div>
+        <div class="filter-group">
+          <label>每页</label>
           <CustomSelect
             v-model.number="pageSize"
             :options="pageSizeOptions"
-            @update:modelValue="fetchLogs"
             style="width: 80px;"
           />
         </div>
+        <div class="filter-actions">
+          <button type="button" class="btn btn-sm btn-primary" @click="handleSearch">查询</button>
+          <button type="button" class="btn btn-sm btn-secondary" @click="resetFilters">重置</button>
+        </div>
       </div>
     </div>
     
@@ -85,12 +112,15 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted, computed } from 'vue'
+import { ref, onMounted, computed, reactive } from 'vue'
 import { getOperationLogs, PaginationResponse, OperationLog } from '../../services/api'
 import { useToast } from '../../composables/useToast'
 import CustomSelect from '../../components/CustomSelect.vue'
+import UserPickerPopover from '../../components/admin/UserPickerPopover.vue'
+import { getDefaultMonthRange, toApiDateTime } from '../../utils/dateRange'
 
 const toast = useToast()
+const defaultRange = getDefaultMonthRange()
 const logs = ref<PaginationResponse<OperationLog>>({
   list: [],
   total: 0,
@@ -99,8 +129,16 @@ const logs = ref<PaginationResponse<OperationLog>>({
 })
 const currentPage = ref(1)
 const pageSize = ref(10)
+const startDateTime = ref(defaultRange.start)
+const endDateTime = ref(defaultRange.end)
+
+const filters = reactive({
+  action: '',
+  method: '',
+  status: 0,
+  userId: null as number | null
+})
 
-// Select options
 const pageSizeOptions = [
   { value: 10, label: '10' },
   { value: 20, label: '20' },
@@ -108,19 +146,63 @@ const pageSizeOptions = [
   { value: 100, label: '100' }
 ]
 
-const totalPages = computed(() => {
-  return Math.ceil(logs.value.total / pageSize.value)
+const methodOptions = [
+  { value: '', label: '全部' },
+  { value: 'GET', label: 'GET' },
+  { value: 'POST', label: 'POST' },
+  { value: 'PUT', label: 'PUT' },
+  { value: 'PATCH', label: 'PATCH' },
+  { value: 'DELETE', label: 'DELETE' }
+]
+
+const statusOptions = [
+  { value: 0, label: '全部' },
+  { value: 200, label: '200' },
+  { value: 201, label: '201' },
+  { value: 400, label: '400' },
+  { value: 401, label: '401' },
+  { value: 403, label: '403' },
+  { value: 404, label: '404' },
+  { value: 500, label: '500' }
+]
+
+const totalPages = computed(() => Math.ceil(logs.value.total / pageSize.value) || 1)
+
+const buildFilters = () => ({
+  action: filters.action || undefined,
+  method: filters.method || undefined,
+  status: filters.status || undefined,
+  userId: filters.userId ?? undefined,
+  startDate: toApiDateTime(startDateTime.value) || undefined,
+  endDate: toApiDateTime(endDateTime.value) || undefined
 })
 
 const fetchLogs = async () => {
   try {
-    logs.value = await getOperationLogs(currentPage.value, pageSize.value)
+    logs.value = await getOperationLogs(currentPage.value, pageSize.value, buildFilters())
   } catch (error) {
     console.error('Error fetching operation logs:', error)
     toast.error('获取操作日志失败')
   }
 }
 
+const handleSearch = () => {
+  currentPage.value = 1
+  fetchLogs()
+}
+
+const resetFilters = () => {
+  const range = getDefaultMonthRange()
+  filters.action = ''
+  filters.method = ''
+  filters.status = 0
+  filters.userId = null
+  startDateTime.value = range.start
+  endDateTime.value = range.end
+  currentPage.value = 1
+  fetchLogs()
+}
+
 const changePage = (page: number) => {
   currentPage.value = page
   fetchLogs()
@@ -163,19 +245,48 @@ onMounted(() => {
 
 .toolbar {
   margin-bottom: 1rem;
-  display: flex;
-  justify-content: flex-end;
 }
 
 .filter-section {
   display: flex;
-  gap: 1rem;
+  flex-wrap: wrap;
+  gap: 0.75rem 1rem;
+  align-items: flex-end;
+  background: rgba(255, 255, 255, 0.05);
+  padding: 1rem;
+  border-radius: 0.5rem;
+  border: 1px solid rgba(255, 255, 255, 0.1);
+}
+
+.filter-actions {
+  display: flex;
+  gap: 0.5rem;
+}
+
+.filter-input {
+  padding: 0.5rem 0.75rem;
+  border: 1px solid rgba(255, 255, 255, 0.2);
+  border-radius: 0.375rem;
+  font-size: 0.875rem;
+  background: rgba(255, 255, 255, 0.05);
+  color: white;
+  font-family: 'Inter', sans-serif;
+  min-width: 140px;
+}
+
+.datetime-input {
+  min-width: 180px;
+}
+
+.filter-input:focus {
+  outline: none;
+  border-color: #d4b383;
 }
 
 .filter-group {
   display: flex;
-  align-items: center;
-  gap: 0.5rem;
+  flex-direction: column;
+  gap: 0.25rem;
 }
 
 .filter-group label {
diff --git a/client/src/pages/admin/SnippetForm.vue b/client/src/pages/admin/SnippetForm.vue
index 7ca84b4..e7caec0 100644
--- a/client/src/pages/admin/SnippetForm.vue
+++ b/client/src/pages/admin/SnippetForm.vue
@@ -22,15 +22,13 @@
         <!-- Type Field -->
         <div class="form-group">
           <label for="type">类型</label>
-          <input
-              type="text"
-              id="type"
-              v-model="form.type"
-              placeholder="请输入代码类型（如：js、css、html等）"
-              required
+          <CustomSelect
+            v-model.number="form.codeTypeId"
+            :options="codeTypeOptions"
+            placeholder="请选择代码类型"
           />
-          <div class="error-message" v-if="errors.type">
-            {{ errors.type }}
+          <div class="error-message" v-if="errors.codeTypeId">
+            {{ errors.codeTypeId }}
           </div>
         </div>
 
@@ -87,7 +85,8 @@ import { MdEditor } from 'md-editor-v3'
 import 'md-editor-v3/lib/style.css'
 
 import { useToast } from '../../composables/useToast'
-import { createSnippet, updateSnippet, fetchSnippet } from '../../services/api'
+import { createSnippet, updateSnippet, fetchSnippet, getAdminCodeTypes } from '../../services/api'
+import CustomSelect from '../../components/CustomSelect.vue'
 
 const router = useRouter()
 const route = useRoute()
@@ -102,10 +101,12 @@ const errors = reactive<Record<string, string>>({})
 const form = reactive({
   title: '',
   code: '',
-  type: 'js',
+  codeTypeId: 0,
   description: ''
 })
 
+const codeTypeOptions = ref<{ value: number; label: string }[]>([])
+
 // Validation function
 const validateForm = (): boolean => {
   // Reset errors
@@ -120,8 +121,8 @@ const validateForm = (): boolean => {
   }
 
   // Validate type
-  if (!form.type.trim()) {
-    errors.type = '代码类型不能为空'
+  if (!form.codeTypeId) {
+    errors.codeTypeId = '请选择代码类型'
     isValid = false
   }
 
@@ -170,14 +171,20 @@ const handleCancel = () => {
 
 // Lifecycle
 onMounted(async () => {
+  try {
+    const types = await getAdminCodeTypes()
+    codeTypeOptions.value = types.map(t => ({ value: t.id, label: `${t.name} (${t.category === 0 ? '前端' : t.category === 1 ? '后端' : '其他'})` }))
+  } catch (error) {
+    console.error('Failed to load code types:', error)
+  }
+
   if (isEditing.value) {
     try {
       const snippetId = route.params.id as string
       const snippet = await fetchSnippet(snippetId)
-      // Populate form with snippet data
       form.title = snippet.title
       form.code = snippet.code
-      form.type = snippet.type
+      form.codeTypeId = snippet.codeTypeId || snippet.codeType?.id || 0
       form.description = snippet.description || ''
     } catch (error: any) {
       console.error('Failed to fetch snippet data:', error)
diff --git a/client/src/router.ts b/client/src/router.ts
index 9fec54d..6a288e3 100644
--- a/client/src/router.ts
+++ b/client/src/router.ts
@@ -110,6 +110,9 @@ const routes = [
       { path: 'snippets', name: 'admin-snippets', component: () => import('./pages/admin/Snippets.vue') },
       { path: 'snippets/create', name: 'admin-snippets-create', component: () => import('./pages/admin/SnippetForm.vue') },
       { path: 'snippets/:id/edit', name: 'admin-snippets-edit', component: () => import('./pages/admin/SnippetForm.vue') },
+      { path: 'code-types', name: 'admin-code-types', component: () => import('./pages/admin/CodeTypes.vue') },
+      { path: 'code-types/create', name: 'admin-code-types-create', component: () => import('./pages/admin/CodeTypeForm.vue') },
+      { path: 'code-types/:id/edit', name: 'admin-code-types-edit', component: () => import('./pages/admin/CodeTypeForm.vue') },
       
       // 标签管理
       { path: 'tags', name: 'admin-tags', component: () => import('./pages/admin/Tags.vue') },
diff --git a/client/src/services/api.ts b/client/src/services/api.ts
index ba85f62..06f18a3 100644
--- a/client/src/services/api.ts
+++ b/client/src/services/api.ts
@@ -174,12 +174,16 @@ export interface PostHistory {
   version: number
   title: string
   categoryId: number
+  categoryName?: string
   columnId?: number
+  columnName?: string
   tagIds?: number[]
+  tagNames?: string[]
   excerpt?: string
   content?: string
   isPublished: number
   modifiedBy: number
+  modifiedByName?: string
   modifiedAt: string
   createdAt: string
 }
@@ -202,12 +206,63 @@ export interface HotSearchKeyword {
   count: number
 }
 
+// 代码类型
+export interface CodeType {
+  id: number
+  name: string
+  category: number // 0前端 1后端 2其他
+}
+
+export const CODE_TYPE_CATEGORY_LABELS: Record<number, string> = {
+  0: '前端',
+  1: '后端',
+  2: '其他'
+}
+
+export const getCodeTypes = async (): Promise<CodeType[]> => {
+  const response = await fetch(`${API_BASE}/code-types`)
+  return await parseApiResponse(response)
+}
+
+export const getAdminCodeTypes = async (): Promise<CodeType[]> => {
+  const response = await authFetch(`${API_BASE}/admin/code-types`, { headers: getAuthHeaders() })
+  return await parseApiResponse(response)
+}
+
+export const createCodeType = async (data: Omit<CodeType, 'id'>): Promise<void> => {
+  const response = await authFetch(`${API_BASE}/admin/code-types`, {
+    method: 'POST',
+    headers: getAuthHeaders(),
+    body: JSON.stringify(data)
+  })
+  await parseApiResponse(response)
+}
+
+export const updateCodeType = async (id: number, data: Omit<CodeType, 'id'>): Promise<void> => {
+  const response = await authFetch(`${API_BASE}/admin/code-types/${id}`, {
+    method: 'PUT',
+    headers: getAuthHeaders(),
+    body: JSON.stringify(data)
+  })
+  await parseApiResponse(response)
+}
+
+export const deleteCodeType = async (id: number): Promise<void> => {
+  const response = await authFetch(`${API_BASE}/admin/code-types/${id}`, {
+    method: 'DELETE',
+    headers: getAuthHeaders()
+  })
+  await parseApiResponse(response)
+}
+
 // 代码片段相关类型
 export interface Snippet {
   id: string
   title: string
   code: string
   type: string
+  codeTypeId?: number
+  codeType?: CodeType
   description?: string
   viewCount?: number
 }
@@ -269,13 +324,27 @@ export const login = async (credentials: LoginRequest): Promise<LoginResponse> =
 }
 
 // 用户管理API
+export interface GetUsersParams {
+  page?: number
+  pageSize?: number
+  keyword?: string
+}
+
+export const getUsersPaginated = async (params: GetUsersParams = {}): Promise<PaginationResponse<User>> => {
+  const page = params.page ?? 1
+  const pageSize = params.pageSize ?? 10
+  const qs = new URLSearchParams({ page: String(page), pageSize: String(pageSize) })
+  if (params.keyword) qs.set('keyword', params.keyword)
+  const response = await authFetch(`${API_BASE}/admin/users?${qs}`, {
+    headers: getAuthHeaders()
+  })
+  return await parseApiResponse(response)
+}
+
 export const getUsers = async (): Promise<User[]> => {
   try {
-    const response = await authFetch(`${API_BASE}/admin/users`, {
-      headers: getAuthHeaders()
-    })
-    const data = await parseApiResponse<any>(response)
-    return (data?.list || []) as User[]
+    const data = await getUsersPaginated({ page: 1, pageSize: 1000 })
+    return data.list
   } catch (error) {
     console.error('Get users error:', error)
     throw error
@@ -1021,7 +1090,7 @@ export const fetchSnippet = async (id: string): Promise<Snippet> => {
   }
 }
 
-export const createSnippet = async (snippetData: Omit<Snippet, 'id' | 'viewCount'>): Promise<void> => {
+export const createSnippet = async (snippetData: Omit<Snippet, 'id' | 'viewCount' | 'codeType' | 'type'> & { type?: string }): Promise<void> => {
   try {
     const response = await authFetch(`${API_BASE}/admin/snippets`, {
       method: 'POST',
@@ -1035,7 +1104,7 @@ export const createSnippet = async (snippetData: Omit<Snippet, 'id' | 'viewCount
   }
 }
 
-export const updateSnippet = async (id: string, snippetData: Omit<Snippet, 'id' | 'viewCount'>): Promise<void> => {
+export const updateSnippet = async (id: string, snippetData: Omit<Snippet, 'id' | 'viewCount' | 'codeType' | 'type'> & { type?: string }): Promise<void> => {
   try {
     const response = await authFetch(`${API_BASE}/admin/snippets/${id}`, {
       method: 'PUT',
@@ -1141,10 +1210,31 @@ export const getPublicSettings = async (): Promise<PublicSettings> => {
   }
 }
 
+// 操作日志筛选参数
+export interface OperationLogFilters {
+  action?: string
+  method?: string
+  status?: number
+  userId?: number
+  startDate?: string
+  endDate?: string
+}
+
 // 操作日志API
-export const getOperationLogs = async (page: number = 1, pageSize: number = 10): Promise<PaginationResponse<OperationLog>> => {
+export const getOperationLogs = async (
+  page: number = 1,
+  pageSize: number = 10,
+  filters: OperationLogFilters = {}
+): Promise<PaginationResponse<OperationLog>> => {
   try {
-    const response = await authFetch(`${API_BASE}/admin/operation-logs?page=${page}&pageSize=${pageSize}`, {
+    const qs = new URLSearchParams({ page: String(page), pageSize: String(pageSize) })
+    if (filters.action) qs.set('action', filters.action)
+    if (filters.method) qs.set('method', filters.method)
+    if (filters.status) qs.set('status', String(filters.status))
+    if (filters.userId) qs.set('userId', String(filters.userId))
+    if (filters.startDate) qs.set('startDate', filters.startDate)
+    if (filters.endDate) qs.set('endDate', filters.endDate)
+    const response = await authFetch(`${API_BASE}/admin/operation-logs?${qs}`, {
       headers: getAuthHeaders()
     })
     return await parseApiResponse(response)
@@ -1167,10 +1257,27 @@ export interface AccessLog {
   createdAt: string
 }
 
+// 访问日志筛选参数
+export interface AccessLogFilters {
+  path?: string
+  region?: string
+  startDate?: string
+  endDate?: string
+}
+
 // 访问日志API
-export const getAccessLogs = async (page: number = 1, pageSize: number = 10): Promise<PaginationResponse<AccessLog>> => {
+export const getAccessLogs = async (
+  page: number = 1,
+  pageSize: number = 10,
+  filters: AccessLogFilters = {}
+): Promise<PaginationResponse<AccessLog>> => {
   try {
-    const response = await authFetch(`${API_BASE}/admin/access-logs?page=${page}&pageSize=${pageSize}`, {
+    const qs = new URLSearchParams({ page: String(page), pageSize: String(pageSize) })
+    if (filters.path) qs.set('path', filters.path)
+    if (filters.region) qs.set('region', filters.region)
+    if (filters.startDate) qs.set('startDate', filters.startDate)
+    if (filters.endDate) qs.set('endDate', filters.endDate)
+    const response = await authFetch(`${API_BASE}/admin/access-logs?${qs}`, {
       headers: getAuthHeaders()
     })
     return await parseApiResponse(response)
diff --git a/client/src/utils/codeHighlight.ts b/client/src/utils/codeHighlight.ts
new file mode 100644
index 0000000..7c0784b
--- /dev/null
+++ b/client/src/utils/codeHighlight.ts
@@ -0,0 +1,24 @@
+const LANGUAGE_ALIASES: Record<string, string> = {
+  js: 'javascript',
+  ts: 'typescript',
+  py: 'python',
+  rb: 'ruby',
+  sh: 'bash',
+  yml: 'yaml',
+  md: 'markdown',
+  xml: 'xml',
+  svg: 'xml',
+  noise: 'xml'
+}
+
+export function resolveHighlightLanguage(typeName?: string): string {
+  if (!typeName) return 'plaintext'
+  const key = typeName.trim().toLowerCase()
+  if (!key) return 'plaintext'
+  return LANGUAGE_ALIASES[key] || key
+}
+
+export function isHtmlFrontendType(codeType?: { name?: string; category?: number } | null): boolean {
+  if (!codeType) return false
+  return codeType.category === 0 && (codeType.name || '').toLowerCase() === 'html'
+}
diff --git a/client/src/utils/dateRange.ts b/client/src/utils/dateRange.ts
new file mode 100644
index 0000000..3ab6574
--- /dev/null
+++ b/client/src/utils/dateRange.ts
@@ -0,0 +1,22 @@
+/** 格式化为 datetime-local 输入值 */
+export function formatDateTimeLocal(date: Date): string {
+  const pad = (n: number) => String(n).padStart(2, '0')
+  return `${date.getFullYear()}-${pad(date.getMonth() + 1)}-${pad(date.getDate())}T${pad(date.getHours())}:${pad(date.getMinutes())}`
+}
+
+/** 默认范围：本月 1 日 00:00 ~ 今天 23:59 */
+export function getDefaultMonthRange(): { start: string; end: string } {
+  const now = new Date()
+  const start = new Date(now.getFullYear(), now.getMonth(), 1, 0, 0, 0)
+  const end = new Date(now.getFullYear(), now.getMonth(), now.getDate(), 23, 59, 0)
+  return {
+    start: formatDateTimeLocal(start),
+    end: formatDateTimeLocal(end)
+  }
+}
+
+/** datetime-local -> API 查询参数 (YYYY-MM-DD HH:mm) */
+export function toApiDateTime(value: string): string {
+  if (!value) return ''
+  return value.replace('T', ' ')
+}
diff --git a/server/handlers/code_type.go b/server/handlers/code_type.go
new file mode 100644
index 0000000..da261a1
--- /dev/null
+++ b/server/handlers/code_type.go
@@ -0,0 +1,83 @@
+package handlers
+
+import (
+	"fmt"
+
+	"github.com/gin-gonic/gin"
+	"github.com/niangaodev/art-code/models"
+	"github.com/niangaodev/art-code/repositories"
+	"github.com/niangaodev/art-code/utils"
+)
+
+func GetCodeTypes(c *gin.Context) {
+	list, err := repositories.GetCodeTypes()
+	if err != nil {
+		utils.ServerError(c, err)
+		return
+	}
+	utils.Success(c, repositories.BuildCodeTypesResponse(list))
+}
+
+func AdminGetCodeTypes(c *gin.Context) {
+	GetCodeTypes(c)
+}
+
+func AdminCreateCodeType(c *gin.Context) {
+	var ct models.CodeType
+	if err := c.ShouldBindJSON(&ct); err != nil {
+		utils.Error(c, 400, "Invalid request")
+		return
+	}
+	if ct.Name == "" {
+		utils.Error(c, 400, "Name is required")
+		return
+	}
+	if err := repositories.CreateCodeType(&ct); err != nil {
+		utils.ServerError(c, err)
+		return
+	}
+	utils.SuccessWithMsg(c, "Code type created", repositories.BuildCodeTypeResponse(&ct))
+}
+
+func AdminUpdateCodeType(c *gin.Context) {
+	idStr := c.Param("id")
+	var id uint
+	if _, err := fmt.Sscanf(idStr, "%d", &id); err != nil {
+		utils.Error(c, 400, "Invalid ID")
+		return
+	}
+	var ct models.CodeType
+	if err := c.ShouldBindJSON(&ct); err != nil {
+		utils.Error(c, 400, "Invalid request")
+		return
+	}
+	ct.ID = id
+	if err := repositories.UpdateCodeType(&ct); err != nil {
+		utils.ServerError(c, err)
+		return
+	}
+	utils.SuccessWithMsg(c, "Code type updated", nil)
+}
+
+func AdminDeleteCodeType(c *gin.Context) {
+	idStr := c.Param("id")
+	var id uint
+	if _, err := fmt.Sscanf(idStr, "%d", &id); err != nil {
+		utils.Error(c, 400, "Invalid ID")
+		return
+	}
+	count, err := repositories.CountSnippetsByCodeTypeID(id)
+	if err != nil {
+		utils.ServerError(c, err)
+		return
+	}
+	if count > 0 {
+		utils.Error(c, 400, "Cannot delete: snippets are using this code type")
+		return
+	}
+	if err := repositories.DeleteCodeType(id); err != nil {
+		utils.ServerError(c, err)
+		return
+	}
+	utils.SuccessWithMsg(c, "Code type deleted", nil)
+}
diff --git a/server/handlers/log.go b/server/handlers/log.go
index b6e8539..fd9aead 100644
--- a/server/handlers/log.go
+++ b/server/handlers/log.go
@@ -12,7 +12,7 @@ import (
 
 func AdminGetRecentActivities(c *gin.Context) {
 	// 获取最近10条操作日志
-	logs, _, err := repositories.GetOperationLogs(1, 10)
+	logs, _, err := repositories.GetOperationLogs(1, 10, repositories.OperationLogFilter{})
 	if err != nil {
 		utils.ServerError(c, err)
 		return
@@ -58,11 +58,9 @@ func AdminGetRecentActivities(c *gin.Context) {
 
 // 获取操作日志列表
 func AdminGetOperationLogs(c *gin.Context) {
-	// 获取分页参数
 	page := 1
 	pageSize := 10
 
-	// 从查询参数中获取分页信息
 	if c.Query("page") != "" {
 		if p, err := strconv.Atoi(c.Query("page")); err == nil {
 			page = p
@@ -75,8 +73,24 @@ func AdminGetOperationLogs(c *gin.Context) {
 		}
 	}
 
-	// 获取操作日志
-	logs, total, err := repositories.GetOperationLogs(page, pageSize)
+	filter := repositories.OperationLogFilter{
+		Action:    c.Query("action"),
+		Method:    c.Query("method"),
+		StartDate: c.Query("startDate"),
+		EndDate:   c.Query("endDate"),
+	}
+	if statusStr := c.Query("status"); statusStr != "" {
+		if s, err := strconv.Atoi(statusStr); err == nil {
+			filter.Status = s
+		}
+	}
+	if userIDStr := c.Query("userId"); userIDStr != "" {
+		if uid, err := strconv.ParseUint(userIDStr, 10, 32); err == nil {
+			filter.UserID = uint(uid)
+		}
+	}
+
+	logs, total, err := repositories.GetOperationLogs(page, pageSize, filter)
 	if err != nil {
 		utils.ServerError(c, err)
 		return
@@ -145,8 +159,15 @@ func AdminGetAccessLogs(c *gin.Context) {
 		}
 	}
 
+	filter := repositories.AccessLogFilter{
+		Path:      c.Query("path"),
+		Region:    c.Query("region"),
+		StartDate: c.Query("startDate"),
+		EndDate:   c.Query("endDate"),
+	}
+
 	// 获取访问日志
-	logs, total, err := repositories.GetAccessLogs(page, pageSize, nil)
+	logs, total, err := repositories.GetAccessLogs(page, pageSize, nil, filter)
 	if err != nil {
 		utils.ServerError(c, err)
 		return
diff --git a/server/handlers/post.go b/server/handlers/post.go
index 03d028f..d33314f 100644
--- a/server/handlers/post.go
+++ b/server/handlers/post.go
@@ -254,8 +254,10 @@ func AdminCreatePost(c *gin.Context) {
 
 	// 保存历史记录
 	userID, _ := c.Get("userID")
-	if err := repositories.SavePostHistory(&post, userID.(uint)); err != nil {
-		log.Printf("Error saving post history: %v", err)
+	if saved, err := repositories.GetPostByIDAdmin(post.ID); err == nil && saved != nil {
+		if err := repositories.SavePostHistory(saved, userID.(uint)); err != nil {
+			log.Printf("Error saving post history: %v", err)
+		}
 	}
 
 	utils.SuccessWithMsg(c, "Post created successfully", gin.H{"id": post.ID})
@@ -287,8 +289,10 @@ func AdminUpdatePost(c *gin.Context) {
 
 	// 保存历史记录
 	userID, _ := c.Get("userID")
-	if err := repositories.SavePostHistory(&post, userID.(uint)); err != nil {
-		log.Printf("Error saving post history: %v", err)
+	if saved, err := repositories.GetPostByIDAdmin(postID); err == nil && saved != nil {
+		if err := repositories.SavePostHistory(saved, userID.(uint)); err != nil {
+			log.Printf("Error saving post history: %v", err)
+		}
 	}
 
 	utils.SuccessWithMsg(c, "Post updated successfully", nil)
@@ -319,6 +323,11 @@ func AdminUpdatePostRelations(c *gin.Context) {
 		return
 	}
 
+	userID, _ := c.Get("userID")
+	if saved, err := repositories.GetPostByIDAdmin(postID); err == nil && saved != nil {
+		_ = repositories.SavePostHistory(saved, userID.(uint))
+	}
+
 	utils.SuccessWithMsg(c, "Post relations updated successfully", nil)
 }
 
@@ -344,6 +353,11 @@ func AdminTogglePostStatus(c *gin.Context) {
 		return
 	}
 
+	userID, _ := c.Get("userID")
+	if saved, err := repositories.GetPostByIDAdmin(postID); err == nil && saved != nil {
+		_ = repositories.SavePostHistory(saved, userID.(uint))
+	}
+
 	utils.SuccessWithMsg(c, "Post status updated successfully", nil)
 }
 
diff --git a/server/handlers/snippet.go b/server/handlers/snippet.go
index de82bfe..3f6e706 100644
--- a/server/handlers/snippet.go
+++ b/server/handlers/snippet.go
@@ -79,6 +79,8 @@ func AdminCreateSnippet(c *gin.Context) {
 		return
 	}
 
+	syncSnippetTypeFromCodeType(&snippet)
+
 	if err := repositories.CreateSnippet(&snippet); err != nil {
 		utils.ServerError(c, err)
 		return
@@ -98,6 +100,7 @@ func AdminUpdateSnippet(c *gin.Context) {
 	}
 
 	snippet.ID = idStr
+	syncSnippetTypeFromCodeType(&snippet)
 
 	if err := repositories.UpdateSnippet(&snippet); err != nil {
 		utils.ServerError(c, err)
@@ -107,6 +110,16 @@ func AdminUpdateSnippet(c *gin.Context) {
 	utils.SuccessWithMsg(c, "Snippet updated successfully", nil)
 }
 
+func syncSnippetTypeFromCodeType(snippet *models.Snippet) {
+	if snippet.CodeTypeID == 0 {
+		return
+	}
+	ct, err := repositories.GetCodeTypeByID(snippet.CodeTypeID)
+	if err == nil && ct != nil {
+		snippet.Type = ct.Name
+	}
+}
+
 // AdminDeleteSnippet 删除代码片段
 func AdminDeleteSnippet(c *gin.Context) {
 	idStr := c.Param("id")
diff --git a/server/handlers/user.go b/server/handlers/user.go
index 1d64c8d..d2bc01a 100644
--- a/server/handlers/user.go
+++ b/server/handlers/user.go
@@ -15,7 +15,12 @@ func AdminGetUsers(c *gin.Context) {
 	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
 	pageSize, _ := strconv.Atoi(c.DefaultQuery("pageSize", "10"))
 
-	users, total, err := repositories.GetUsers(page, pageSize)
+	keyword := c.Query("keyword")
+	if keyword == "" {
+		keyword = c.Query("q")
+	}
+
+	users, total, err := repositories.GetUsers(page, pageSize, keyword)
 	if err != nil {
 		utils.ServerError(c, err)
 		return
diff --git a/server/main.go b/server/main.go
index 4e60188..a5b636b 100644
--- a/server/main.go
+++ b/server/main.go
@@ -71,6 +71,7 @@ func main() {
 		// 代码片段路由
 		api.GET("/snippets", handlers.GetSnippets)
 		api.GET("/snippets/:id", handlers.GetSnippet)
+		api.GET("/code-types", handlers.GetCodeTypes)
 
 		// 标签路由
 		api.GET("/tags", handlers.GetTags)
@@ -135,6 +136,12 @@ func main() {
 			authAdmin.PUT("/snippets/:id", middleware.PermissionMiddleware("snippets", "update"), handlers.AdminUpdateSnippet)
 			authAdmin.DELETE("/snippets/:id", middleware.PermissionMiddleware("snippets", "delete"), handlers.AdminDeleteSnippet)
 
+			// 代码类型管理
+			authAdmin.GET("/code-types", middleware.PermissionMiddleware("snippets", "read"), handlers.AdminGetCodeTypes)
+			authAdmin.POST("/code-types", middleware.PermissionMiddleware("snippets", "create"), handlers.AdminCreateCodeType)
+			authAdmin.PUT("/code-types/:id", middleware.PermissionMiddleware("snippets", "update"), handlers.AdminUpdateCodeType)
+			authAdmin.DELETE("/code-types/:id", middleware.PermissionMiddleware("snippets", "delete"), handlers.AdminDeleteCodeType)
+
 			// 系统配置管理
 			authAdmin.GET("/settings", middleware.PermissionMiddleware("settings", "read"), handlers.AdminGetSettings)
 			authAdmin.POST("/settings", middleware.PermissionMiddleware("settings", "create"), handlers.AdminCreateSetting)
diff --git a/server/middleware/log.go b/server/middleware/log.go
index ef87fad..3d2655e 100644
--- a/server/middleware/log.go
+++ b/server/middleware/log.go
@@ -70,13 +70,16 @@ func OperationLogMiddleware() gin.HandlerFunc {
 		log.Printf("Creating operation log: UserID=%d, IP=%s, Region=%s, Path=%s", userID.(uint), ip, region, c.Request.URL.Path)
 
 		// 构建操作日志
+		path := c.Request.URL.Path
+		method := c.Request.Method
 		operationLog := &models.OperationLog{
 			UserID:   userID.(uint),
 			Username: username.(string),
 			IP:       ip,
 			Region:   region,
-			Path:     c.Request.URL.Path,
-			Method:   c.Request.Method,
+			Path:     path,
+			Method:   method,
+			Action:   utils.GetOperationAction(path, method),
 			Params:   string(requestBody),
 			Status:   c.Writer.Status(),
 			Duration: duration,
diff --git a/server/models/code_type.go b/server/models/code_type.go
new file mode 100644
index 0000000..e5a73bb
--- /dev/null
+++ b/server/models/code_type.go
@@ -0,0 +1,43 @@
+package models
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+// CodeType 代码类型
+type CodeType struct {
+	ID        uint   `json:"id" gorm:"primaryKey;column:id"`
+	Name      string `json:"name" gorm:"column:name"`
+	Category  int    `json:"category" gorm:"column:category"` // 0前端 1后端 2其他
+	CreatedAt int64  `json:"createdAt" gorm:"column:created_at"`
+	UpdatedAt int64  `json:"updatedAt" gorm:"column:updated_at"`
+	DeletedAt int64  `json:"deletedAt" gorm:"column:deleted_at;default:0"`
+}
+
+func (CodeType) TableName() string {
+	return "code_types"
+}
+
+func (c *CodeType) BeforeCreate(tx *gorm.DB) error {
+	now := time.Now().Unix()
+	if c.CreatedAt == 0 {
+		c.CreatedAt = now
+	}
+	if c.UpdatedAt == 0 {
+		c.UpdatedAt = now
+	}
+	return nil
+}
+
+func (c *CodeType) BeforeUpdate(tx *gorm.DB) error {
+	c.UpdatedAt = time.Now().Unix()
+	return nil
+}
+
+type CodeTypeResponse struct {
+	ID       uint   `json:"id"`
+	Name     string `json:"name"`
+	Category int    `json:"category"`
+}
diff --git a/server/models/operation_log.go b/server/models/operation_log.go
index ea62b22..d25d1bb 100644
--- a/server/models/operation_log.go
+++ b/server/models/operation_log.go
@@ -15,6 +15,7 @@ type OperationLog struct {
 	Region    string `json:"region" gorm:"column:region"` // IP归属地
 	Path      string `json:"path" gorm:"column:path;index"`
 	Method    string `json:"method" gorm:"column:method"`
+	Action    string `json:"action" gorm:"column:action;index"`
 	Params    string `json:"params" gorm:"column:params;type:text"`
 	Status    int    `json:"status" gorm:"column:status"`
 	Duration  int    `json:"duration" gorm:"column:duration"`
diff --git a/server/models/post.go b/server/models/post.go
index 920402f..bc7584c 100644
--- a/server/models/post.go
+++ b/server/models/post.go
@@ -118,21 +118,24 @@ func (ph *PostHistory) BeforeCreate(tx *gorm.DB) error {
 
 // PostHistoryResponse 文章历史记录响应模型
 type PostHistoryResponse struct {
-	ID           uint   `json:"id"`
-	PostID       uint   `json:"postId"`
-	Version      int    `json:"version"`
-	Title        string `json:"title"`
-	CategoryID   uint   `json:"categoryId"`
-	CategoryName string `json:"categoryName,omitempty"`
-	ColumnID     *uint  `json:"columnId,omitempty"`
-	TagIDs       []uint `json:"tagIds,omitempty"`
-	Excerpt      string `json:"excerpt,omitempty"`
-	Content      string `json:"content,omitempty"`
-	Date         string `json:"date"`
-	IsPublished  int    `json:"isPublished"`
-	ModifiedBy   uint   `json:"modifiedBy"`
-	ModifiedAt   string `json:"modifiedAt"`
-	CreatedAt    string `json:"createdAt"`
+	ID             uint     `json:"id"`
+	PostID         uint     `json:"postId"`
+	Version        int      `json:"version"`
+	Title          string   `json:"title"`
+	CategoryID     uint     `json:"categoryId"`
+	CategoryName   string   `json:"categoryName,omitempty"`
+	ColumnID       *uint    `json:"columnId,omitempty"`
+	TagIDs         []uint   `json:"tagIds,omitempty"`
+	Excerpt        string   `json:"excerpt,omitempty"`
+	Content        string   `json:"content,omitempty"`
+	Date           string   `json:"date"`
+	IsPublished    int      `json:"isPublished"`
+	ModifiedBy     uint     `json:"modifiedBy"`
+	ModifiedByName string   `json:"modifiedByName,omitempty"`
+	ColumnName     string   `json:"columnName,omitempty"`
+	TagNames       []string `json:"tagNames,omitempty"`
+	ModifiedAt     string   `json:"modifiedAt"`
+	CreatedAt      string   `json:"createdAt"`
 }
 
 // PostHistoryFieldDiff 字段对比结果
diff --git a/server/models/snippet.go b/server/models/snippet.go
index 9ff1d16..18b4fd2 100644
--- a/server/models/snippet.go
+++ b/server/models/snippet.go
@@ -12,6 +12,7 @@ type Snippet struct {
 	Title       string `json:"title" gorm:"column:title"`
 	Code        string `json:"code" gorm:"column:code;type:text"`
 	Type        string `json:"type" gorm:"column:type"`
+	CodeTypeID  uint   `json:"codeTypeId" gorm:"column:code_type_id"`
 	Description string `json:"description" gorm:"column:description;type:text"`
 	ViewCount   uint   `json:"viewCount" gorm:"column:view_count;default:0"`
 	CreatedAt   int64  `json:"createdAt" gorm:"column:created_at"`
@@ -47,8 +48,12 @@ func (s *Snippet) BeforeUpdate(tx *gorm.DB) error {
 
 // SnippetResponse 代码片段响应模型
 type SnippetResponse struct {
-	ID    string `json:"id"`
-	Title string `json:"title"`
-	Code  string `json:"code"`
-	Type  string `json:"type"`
+	ID          string            `json:"id"`
+	Title       string            `json:"title"`
+	Code        string            `json:"code"`
+	Type        string            `json:"type"`
+	CodeTypeID  uint              `json:"codeTypeId,omitempty"`
+	CodeType    *CodeTypeResponse `json:"codeType,omitempty"`
+	Description string            `json:"description,omitempty"`
+	ViewCount   uint              `json:"viewCount,omitempty"`
 }
diff --git a/server/nl_blog.sql b/server/nl_blog.sql
index 6437352..5cf8622 100644
--- a/server/nl_blog.sql
+++ b/server/nl_blog.sql
@@ -1,17 +1,17 @@
 /*
  Navicat Premium Dump SQL
 
- Source Server         : 我的mysql8
+ Source Server         : 开发环境-本地
  Source Server Type    : MySQL
- Source Server Version : 80407 (8.4.7)
- Source Host           : 101.43.12.11:3306
+ Source Server Version : 80408 (8.4.8)
+ Source Host           : localhost:3306
  Source Schema         : nl_blog
 
  Target Server Type    : MySQL
- Target Server Version : 80407 (8.4.7)
+ Target Server Version : 80408 (8.4.8)
  File Encoding         : 65001
 
- Date: 24/06/2026 16:07:16
+ Date: 24/06/2026 16:52:32
 */
 
 SET NAMES utf8mb4;
@@ -36,7 +36,7 @@ CREATE TABLE `about_profiles`  (
   `updated_at` bigint NOT NULL DEFAULT 0,
   `deleted_at` bigint NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 4 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 4 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for access_logs
@@ -56,7 +56,7 @@ CREATE TABLE `access_logs`  (
   PRIMARY KEY (`id`) USING BTREE,
   INDEX `idx_path`(`path` ASC) USING BTREE COMMENT '按访问路径查询索引',
   INDEX `idx_status_code`(`status_code` ASC) USING BTREE COMMENT '按状态码查询索引'
-) ENGINE = InnoDB AUTO_INCREMENT = 25100 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '访问日志表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 27003 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '访问日志表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for attachment_categories
@@ -72,7 +72,7 @@ CREATE TABLE `attachment_categories`  (
   `updated_at` bigint NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`) USING BTREE,
   INDEX `idx_sort_order`(`sort_order` ASC) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 2 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '附件分类表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 2 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '附件分类表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for attachments
@@ -98,7 +98,7 @@ CREATE TABLE `attachments`  (
   INDEX `idx_storage_type`(`storage_type` ASC) USING BTREE,
   INDEX `idx_file_type`(`file_type` ASC) USING BTREE,
   INDEX `idx_created_at`(`created_at` ASC) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 74 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '附件表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 76 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '附件表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for categories
@@ -116,7 +116,7 @@ CREATE TABLE `categories`  (
   PRIMARY KEY (`id`) USING BTREE,
   UNIQUE INDEX `uk_slug`(`slug` ASC) USING BTREE,
   INDEX `idx_sort_order`(`sort_order` ASC) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 7 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '文章分类表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 7 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '文章分类表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for column_posts
@@ -129,7 +129,7 @@ CREATE TABLE `column_posts`  (
   `created_at` bigint NOT NULL DEFAULT 0,
   PRIMARY KEY (`column_id`, `post_id`) USING BTREE,
   INDEX `idx_post_id`(`post_id` ASC) USING BTREE
-) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '专栏文章关联表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '专栏文章关联表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for columns
@@ -147,7 +147,7 @@ CREATE TABLE `columns`  (
   `updated_at` bigint NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`) USING BTREE,
   INDEX `idx_sort_order`(`sort_order` ASC) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 4 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '专栏表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 4 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '专栏表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for email_suffixes
@@ -163,7 +163,7 @@ CREATE TABLE `email_suffixes`  (
   `updated_at` bigint NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`) USING BTREE,
   UNIQUE INDEX `uk_suffix`(`suffix` ASC) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 15 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '邮箱后缀配置表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 15 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '邮箱后缀配置表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for inquiries
@@ -182,7 +182,7 @@ CREATE TABLE `inquiries`  (
   `created_at` bigint NOT NULL DEFAULT 0,
   `updated_at` bigint NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 2 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '合作咨询表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 2 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '合作咨询表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for operation_logs
@@ -196,14 +196,16 @@ CREATE TABLE `operation_logs`  (
   `region` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL DEFAULT NULL COMMENT 'IP归属地',
   `path` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '操作路径',
   `method` varchar(10) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'HTTP方法',
+  `action` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL DEFAULT NULL COMMENT '操作描述',
   `params` text CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL COMMENT '请求参数',
   `status` int NOT NULL COMMENT '响应状态码',
   `duration` int NOT NULL COMMENT '响应时间（毫秒）',
   `deleted_at` bigint NOT NULL DEFAULT 0,
   `created_at` bigint NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`) USING BTREE,
-  INDEX `idx_user_id`(`user_id` ASC) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 487 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '操作日志表' ROW_FORMAT = Dynamic;
+  INDEX `idx_user_id`(`user_id` ASC) USING BTREE,
+  INDEX `idx_action`(`action` ASC) USING BTREE
+) ENGINE = InnoDB AUTO_INCREMENT = 678 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '操作日志表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for oss_configs
@@ -225,7 +227,7 @@ CREATE TABLE `oss_configs`  (
   PRIMARY KEY (`id`) USING BTREE,
   INDEX `idx_storage_type`(`storage_type` ASC) USING BTREE,
   INDEX `idx_is_active`(`is_active` ASC) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 5 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = 'OSS配置表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 5 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = 'OSS配置表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for partners
@@ -242,7 +244,7 @@ CREATE TABLE `partners`  (
   `created_at` bigint NOT NULL DEFAULT 0,
   `updated_at` bigint NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 6 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '合作伙伴表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 6 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '合作伙伴表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for permissions
@@ -258,7 +260,7 @@ CREATE TABLE `permissions`  (
   `updated_at` bigint NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`) USING BTREE,
   UNIQUE INDEX `unique_resource_action`(`resource` ASC, `action` ASC) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 31 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '权限表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 31 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '权限表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for post_history
@@ -270,7 +272,7 @@ CREATE TABLE `post_history`  (
   `version` int UNSIGNED NOT NULL DEFAULT 1 COMMENT '版本号',
   `title` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '文章标题',
   `category_id` int UNSIGNED NOT NULL DEFAULT 0 COMMENT '文章分类ID',
-  `column_id` int UNSIGNED NULL DEFAULT NULL COMMENT '专栏ID',
+  `column_id` int UNSIGNED NULL DEFAULT NULL COMMENT '专栏ID快照',
   `tag_ids` json NULL COMMENT '标签ID快照',
   `excerpt` text CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL COMMENT '文章摘要',
   `content` longtext CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '文章内容',
@@ -282,7 +284,7 @@ CREATE TABLE `post_history`  (
   PRIMARY KEY (`id`) USING BTREE,
   INDEX `idx_post_id`(`post_id` ASC) USING BTREE,
   INDEX `idx_version`(`version` ASC) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 60 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '文章历史记录表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 60 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '文章历史记录表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for post_tags
@@ -294,7 +296,7 @@ CREATE TABLE `post_tags`  (
   `created_at` bigint NOT NULL DEFAULT 0,
   PRIMARY KEY (`post_id`, `tag_id`) USING BTREE,
   INDEX `idx_tag_id`(`tag_id` ASC) USING BTREE
-) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '文章标签关联表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '文章标签关联表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for posts
@@ -319,7 +321,7 @@ CREATE TABLE `posts`  (
   INDEX `idx_is_published`(`is_published` ASC) USING BTREE COMMENT '按发布状态查询索引',
   INDEX `idx_original_id`(`original_id` ASC) USING BTREE,
   FULLTEXT INDEX `idx_title_content`(`title`, `content`) COMMENT '标题和内容全文索引，用于搜索'
-) ENGINE = InnoDB AUTO_INCREMENT = 36 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '博客文章表（新结构）' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 36 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '博客文章表（新结构）' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for role_permissions
@@ -330,7 +332,7 @@ CREATE TABLE `role_permissions`  (
   `permission_id` bigint UNSIGNED NOT NULL COMMENT '权限ID',
   PRIMARY KEY (`role_id`, `permission_id`) USING BTREE,
   INDEX `role_permissions_ibfk_2`(`permission_id` ASC) USING BTREE
-) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '角色权限关联表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '角色权限关联表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for roles
@@ -345,7 +347,7 @@ CREATE TABLE `roles`  (
   `updated_at` bigint NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`) USING BTREE,
   UNIQUE INDEX `name`(`name` ASC) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 4 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '角色表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 4 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '角色表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for search_logs
@@ -362,7 +364,7 @@ CREATE TABLE `search_logs`  (
   PRIMARY KEY (`id`) USING BTREE,
   INDEX `idx_search_type`(`search_type` ASC) USING BTREE,
   INDEX `idx_created_at`(`created_at` ASC) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 22 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '搜索记录表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 25 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '搜索记录表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for settings
@@ -379,7 +381,22 @@ CREATE TABLE `settings`  (
   PRIMARY KEY (`id`) USING BTREE,
   UNIQUE INDEX `key_name`(`key_name` ASC) USING BTREE,
   INDEX `idx_key_name`(`key_name` ASC) USING BTREE COMMENT '按键名查询索引'
-) ENGINE = InnoDB AUTO_INCREMENT = 16 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '网站配置表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 16 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '网站配置表' ROW_FORMAT = DYNAMIC;
+
+-- ----------------------------
+-- Table structure for code_types
+-- ----------------------------
+DROP TABLE IF EXISTS `code_types`;
+CREATE TABLE `code_types`  (
+  `id` bigint UNSIGNED NOT NULL AUTO_INCREMENT,
+  `name` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '类型名称',
+  `category` tinyint NOT NULL DEFAULT 0 COMMENT '0前端 1后端 2其他',
+  `deleted_at` bigint NOT NULL DEFAULT 0,
+  `created_at` bigint NOT NULL DEFAULT 0,
+  `updated_at` bigint NOT NULL DEFAULT 0,
+  PRIMARY KEY (`id`) USING BTREE,
+  UNIQUE INDEX `uk_name`(`name` ASC, `deleted_at` ASC) USING BTREE
+) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '代码类型表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for snippets
@@ -390,6 +407,7 @@ CREATE TABLE `snippets`  (
   `title` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '代码片段标题',
   `code` text CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '代码内容',
   `type` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL COMMENT '代码类型（如：javascript、css、html等）',
+  `code_type_id` bigint UNSIGNED NULL DEFAULT NULL COMMENT '代码类型ID',
   `description` text CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL COMMENT '代码片段描述',
   `view_count` int UNSIGNED NULL DEFAULT 0 COMMENT '查看次数',
   `deleted_at` bigint NOT NULL DEFAULT 0,
@@ -398,7 +416,7 @@ CREATE TABLE `snippets`  (
   PRIMARY KEY (`id`) USING BTREE,
   INDEX `idx_type`(`type` ASC) USING BTREE COMMENT '按代码类型查询索引',
   INDEX `idx_view_count`(`view_count` ASC) USING BTREE COMMENT '按查看次数查询索引'
-) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '代码片段表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '代码片段表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for tags
@@ -415,7 +433,7 @@ CREATE TABLE `tags`  (
   UNIQUE INDEX `name`(`name` ASC) USING BTREE,
   UNIQUE INDEX `slug`(`slug` ASC) USING BTREE,
   INDEX `idx_slug`(`slug` ASC) USING BTREE COMMENT '按别名查询索引'
-) ENGINE = InnoDB AUTO_INCREMENT = 15 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '标签表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 15 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '标签表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for testimonials
@@ -433,7 +451,7 @@ CREATE TABLE `testimonials`  (
   `created_at` bigint NOT NULL DEFAULT 0,
   `updated_at` bigint NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 7 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '客户评价表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 7 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '客户评价表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for user_access_logs
@@ -445,15 +463,12 @@ CREATE TABLE `user_access_logs`  (
   `user_ip` varchar(45) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '用户IP地址',
   `user_location` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '用户归属地',
   `article_id` int NOT NULL COMMENT '访问的文章ID',
-  `visitor_key` varchar(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT '匿名访客标识',
   `deleted_at` bigint NOT NULL DEFAULT 0,
   `access_time` bigint NOT NULL DEFAULT 0,
   PRIMARY KEY (`id`) USING BTREE,
   INDEX `idx_user_id`(`user_id` ASC) USING BTREE,
-  INDEX `idx_article_id`(`article_id` ASC) USING BTREE,
-  INDEX `idx_dedup_hour`(`article_id` ASC, `visitor_key` ASC, `access_time` ASC) USING BTREE,
-  INDEX `idx_dedup_user_hour`(`article_id` ASC, `user_id` ASC, `access_time` ASC) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 298 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci COMMENT = '用户访问记录表' ROW_FORMAT = Dynamic;
+  INDEX `idx_article_id`(`article_id` ASC) USING BTREE
+) ENGINE = InnoDB AUTO_INCREMENT = 298 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci COMMENT = '用户访问记录表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for users
@@ -477,7 +492,7 @@ CREATE TABLE `users`  (
   INDEX `idx_email`(`email` ASC) USING BTREE COMMENT '按邮箱查询索引',
   INDEX `idx_role`(`role` ASC) USING BTREE COMMENT '按角色查询索引',
   INDEX `users_ibfk_1`(`role_id` ASC) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 6 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '用户表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 6 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '用户表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for work_gallery
@@ -494,7 +509,7 @@ CREATE TABLE `work_gallery`  (
   PRIMARY KEY (`id`) USING BTREE,
   INDEX `idx_work_id`(`work_id` ASC) USING BTREE,
   INDEX `idx_sort_order`(`sort_order` ASC) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 30 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '作品图库表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 30 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '作品图库表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for work_tech_stack
@@ -510,7 +525,7 @@ CREATE TABLE `work_tech_stack`  (
   PRIMARY KEY (`id`) USING BTREE,
   INDEX `idx_work_id`(`work_id` ASC) USING BTREE,
   INDEX `idx_category`(`category` ASC) USING BTREE
-) ENGINE = InnoDB AUTO_INCREMENT = 28 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '作品技术栈表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB AUTO_INCREMENT = 28 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '作品技术栈表' ROW_FORMAT = DYNAMIC;
 
 -- ----------------------------
 -- Table structure for works
@@ -532,6 +547,6 @@ CREATE TABLE `works`  (
   INDEX `idx_category`(`category` ASC) USING BTREE COMMENT '按分类查询索引',
   INDEX `idx_year`(`year` ASC) USING BTREE COMMENT '按年份查询索引',
   INDEX `idx_is_featured`(`is_featured` ASC) USING BTREE COMMENT '按精选状态查询索引'
-) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '作品表' ROW_FORMAT = Dynamic;
+) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '作品表' ROW_FORMAT = DYNAMIC;
 
 SET FOREIGN_KEY_CHECKS = 1;
diff --git a/server/repositories/access_log_filter.go b/server/repositories/access_log_filter.go
new file mode 100644
index 0000000..09947a5
--- /dev/null
+++ b/server/repositories/access_log_filter.go
@@ -0,0 +1,9 @@
+package repositories
+
+// AccessLogFilter 访问日志筛选条件
+type AccessLogFilter struct {
+	Path      string
+	Region    string
+	StartDate string
+	EndDate   string
+}
diff --git a/server/repositories/code_type_repository.go b/server/repositories/code_type_repository.go
new file mode 100644
index 0000000..bfeb727
--- /dev/null
+++ b/server/repositories/code_type_repository.go
@@ -0,0 +1,89 @@
+package repositories
+
+import (
+	"log"
+	"time"
+
+	"github.com/niangaodev/art-code/config"
+	"github.com/niangaodev/art-code/models"
+	"gorm.io/gorm"
+)
+
+func GetCodeTypes() ([]models.CodeType, error) {
+	var list []models.CodeType
+	err := config.DB.Model(&models.CodeType{}).
+		Where("deleted_at = ?", 0).
+		Order("category ASC, name ASC").
+		Find(&list).Error
+	return list, err
+}
+
+func GetCodeTypeByID(id uint) (*models.CodeType, error) {
+	var ct models.CodeType
+	err := config.DB.Model(&models.CodeType{}).
+		Where("id = ? AND deleted_at = ?", id, 0).
+		First(&ct).Error
+	if err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return nil, nil
+		}
+		return nil, err
+	}
+	return &ct, nil
+}
+
+func CreateCodeType(ct *models.CodeType) error {
+	return config.DB.Create(ct).Error
+}
+
+func UpdateCodeType(ct *models.CodeType) error {
+	return config.DB.Model(&models.CodeType{}).
+		Where("id = ? AND deleted_at = ?", ct.ID, 0).
+		Updates(map[string]interface{}{
+			"name":       ct.Name,
+			"category":   ct.Category,
+			"updated_at": time.Now().Unix(),
+		}).Error
+}
+
+func DeleteCodeType(id uint) error {
+	return config.DB.Model(&models.CodeType{}).
+		Where("id = ?", id).
+		Update("deleted_at", time.Now().Unix()).Error
+}
+
+func CountSnippetsByCodeTypeID(id uint) (int64, error) {
+	var count int64
+	err := config.DB.Model(&models.Snippet{}).
+		Where("code_type_id = ? AND deleted_at = ?", id, 0).
+		Count(&count).Error
+	return count, err
+}
+
+func BuildCodeTypeResponse(ct *models.CodeType) models.CodeTypeResponse {
+	return models.CodeTypeResponse{
+		ID:       ct.ID,
+		Name:     ct.Name,
+		Category: ct.Category,
+	}
+}
+
+func BuildCodeTypesResponse(list []models.CodeType) []models.CodeTypeResponse {
+	res := make([]models.CodeTypeResponse, 0, len(list))
+	for _, ct := range list {
+		res = append(res, BuildCodeTypeResponse(&ct))
+	}
+	return res
+}
+
+func GetCodeTypeForSnippet(snippet *models.Snippet) *models.CodeType {
+	if snippet.CodeTypeID == 0 {
+		return nil
+	}
+	ct, err := GetCodeTypeByID(snippet.CodeTypeID)
+	if err != nil {
+		log.Printf("Error loading code type %d: %v", snippet.CodeTypeID, err)
+		return nil
+	}
+	return ct
+}
diff --git a/server/repositories/log_repository.go b/server/repositories/log_repository.go
index e018215..d025999 100644
--- a/server/repositories/log_repository.go
+++ b/server/repositories/log_repository.go
@@ -129,7 +129,7 @@ func GetDailyUV(startDate, endDate string) ([]UVTrendData, error) {
 }
 
 // GetAccessLogs 获取访问日志列表（支持分页和筛选）
-func GetAccessLogs(page, pageSize int, postID *int) ([]models.AccessLog, int64, error) {
+func GetAccessLogs(page, pageSize int, postID *int, filter AccessLogFilter) ([]models.AccessLog, int64, error) {
 	query := config.DB.Model(&models.AccessLog{}).
 		Where("deleted_at = ?", 0)
 
@@ -168,6 +168,25 @@ func GetAccessLogs(page, pageSize int, postID *int) ([]models.AccessLog, int64,
 		)
 	}
 
+	if filter.Path != "" {
+		query = query.Where("path LIKE ?", "%"+filter.Path+"%")
+	}
+	if filter.Region != "" {
+		query = query.Where("region LIKE ?", "%"+filter.Region+"%")
+	}
+	if filter.StartDate != "" {
+		startUnix := parseDateToUnix(filter.StartDate, false)
+		if startUnix > 0 {
+			query = query.Where("created_at >= ?", startUnix)
+		}
+	}
+	if filter.EndDate != "" {
+		endUnix := parseDateToUnix(filter.EndDate, true)
+		if endUnix > 0 {
+			query = query.Where("created_at <= ?", endUnix)
+		}
+	}
+
 	var total int64
 	if err := query.Count(&total).Error; err != nil {
 		return nil, 0, err
@@ -186,7 +205,7 @@ func GetAccessLogs(page, pageSize int, postID *int) ([]models.AccessLog, int64,
 // GetPostAccessLogsFromAccessLogs 从 access_logs 表获取指定文章的访问记录（已废弃，应使用 user_access_logs）
 // 保留此函数以保持向后兼容，但建议使用 user_access_log_repository.GetPostAccessLogs
 func GetPostAccessLogsFromAccessLogs(postID int, page, pageSize int) ([]models.AccessLog, int64, error) {
-	return GetAccessLogs(page, pageSize, &postID)
+	return GetAccessLogs(page, pageSize, &postID, AccessLogFilter{})
 }
 
 // ExtractProvinceFromRegion 从归属地字符串中提取省份信息
diff --git a/server/repositories/migration.go b/server/repositories/migration.go
index 96bccb9..eaac09a 100644
--- a/server/repositories/migration.go
+++ b/server/repositories/migration.go
@@ -14,7 +14,7 @@ func MigrateToBigInt() {
 		"about_profiles", "partners", "testimonials", "inquiries",
 		"email_suffixes", "access_logs", "user_access_logs",
 		"operation_logs", "permissions", "roles",
-		"work_tech_stack", "work_gallery", "post_tags", "post_history",
+		"work_tech_stack", "work_gallery", "post_tags", "post_history", "code_types",
 	}
 
 	for _, table := range tables {
diff --git a/server/repositories/operation_log_filter.go b/server/repositories/operation_log_filter.go
new file mode 100644
index 0000000..133748c
--- /dev/null
+++ b/server/repositories/operation_log_filter.go
@@ -0,0 +1,11 @@
+package repositories
+
+// OperationLogFilter 操作日志筛选条件
+type OperationLogFilter struct {
+	Action    string
+	Method    string
+	Status    int // 0 表示不筛选
+	UserID    uint
+	StartDate string
+	EndDate   string
+}
diff --git a/server/repositories/operation_log_repository.go b/server/repositories/operation_log_repository.go
index ed25116..523a1bc 100644
--- a/server/repositories/operation_log_repository.go
+++ b/server/repositories/operation_log_repository.go
@@ -20,25 +20,45 @@ func CreateOperationLog(operationLog *models.OperationLog) error {
 }
 
 // GetOperationLogs 获取操作日志列表
-func GetOperationLogs(page, pageSize int) ([]models.OperationLog, int64, error) {
+func GetOperationLogs(page, pageSize int, filter OperationLogFilter) ([]models.OperationLog, int64, error) {
 	offset := (page - 1) * pageSize
 
-	var logs []models.OperationLog
-	var total int64
+	query := config.DB.Model(&models.OperationLog{}).
+		Where("deleted_at = ?", 0)
 
-	// 获取总记录数
-	err := config.DB.Model(&models.OperationLog{}).
-		Where("deleted_at = ?", 0).
-		Count(&total).Error
-	if err != nil {
+	if filter.Action != "" {
+		query = query.Where("action LIKE ?", "%"+filter.Action+"%")
+	}
+	if filter.Method != "" {
+		query = query.Where("method = ?", filter.Method)
+	}
+	if filter.Status > 0 {
+		query = query.Where("status = ?", filter.Status)
+	}
+	if filter.UserID > 0 {
+		query = query.Where("user_id = ?", filter.UserID)
+	}
+	if filter.StartDate != "" {
+		startUnix := parseDateToUnix(filter.StartDate, false)
+		if startUnix > 0 {
+			query = query.Where("created_at >= ?", startUnix)
+		}
+	}
+	if filter.EndDate != "" {
+		endUnix := parseDateToUnix(filter.EndDate, true)
+		if endUnix > 0 {
+			query = query.Where("created_at <= ?", endUnix)
+		}
+	}
+
+	var total int64
+	if err := query.Count(&total).Error; err != nil {
 		log.Printf("Error counting operation logs: %v", err)
 		return nil, 0, err
 	}
 
-	// 获取分页数据
-	err = config.DB.Model(&models.OperationLog{}).
-		Where("deleted_at = ?", 0).
-		Order("created_at DESC").
+	var logs []models.OperationLog
+	err := query.Order("created_at DESC").
 		Limit(pageSize).
 		Offset(offset).
 		Find(&logs).Error
@@ -52,8 +72,10 @@ func GetOperationLogs(page, pageSize int) ([]models.OperationLog, int64, error)
 
 // BuildOperationLogResponse 构建操作日志响应
 func BuildOperationLogResponse(log *models.OperationLog) *models.OperationLogResponse {
-	// 生成操作描述
-	action := utils.GetOperationAction(log.Path, log.Method)
+	action := log.Action
+	if action == "" {
+		action = utils.GetOperationAction(log.Path, log.Method)
+	}
 
 	return &models.OperationLogResponse{
 		ID:        log.ID,
diff --git a/server/repositories/post_repository.go b/server/repositories/post_repository.go
index 82a2926..011eb81 100644
--- a/server/repositories/post_repository.go
+++ b/server/repositories/post_repository.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"log"
 	"strconv"
+	"strings"
 	"time"
 
 	"github.com/niangaodev/art-code/config"
@@ -558,18 +559,22 @@ func GetPostHistoryByVersion(postID uint, version uint) (*models.PostHistory, er
 // BuildPostHistoryResponse 构建历史记录响应
 func BuildPostHistoryResponse(h *models.PostHistory, includeFull bool) *models.PostHistoryResponse {
 	resp := &models.PostHistoryResponse{
-		ID:          h.ID,
-		PostID:      h.PostID,
-		Version:     h.Version,
-		Title:       h.Title,
-		CategoryID:  h.CategoryID,
-		ColumnID:    h.ColumnID,
-		TagIDs:      h.GetTagIDList(),
-		Date:        time.Unix(h.CreatedAt, 0).Format("2006-01-02"),
-		IsPublished: h.IsPublished,
-		ModifiedBy:  h.ModifiedBy,
-		ModifiedAt:  time.Unix(h.ModifiedAt, 0).Format("2006-01-02 15:04:05"),
-		CreatedAt:   time.Unix(h.CreatedAt, 0).Format("2006-01-02 15:04:05"),
+		ID:             h.ID,
+		PostID:         h.PostID,
+		Version:        h.Version,
+		Title:          h.Title,
+		CategoryID:     h.CategoryID,
+		CategoryName:   lookupCategoryName(h.CategoryID),
+		ColumnID:       h.ColumnID,
+		ColumnName:     lookupColumnName(h.ColumnID),
+		TagIDs:         h.GetTagIDList(),
+		TagNames:       lookupTagNames(h.GetTagIDList()),
+		Date:           time.Unix(h.CreatedAt, 0).Format("2006-01-02"),
+		IsPublished:    h.IsPublished,
+		ModifiedBy:     h.ModifiedBy,
+		ModifiedByName: lookupUsername(h.ModifiedBy),
+		ModifiedAt:     time.Unix(h.ModifiedAt, 0).Format("2006-01-02 15:04:05"),
+		CreatedAt:      time.Unix(h.CreatedAt, 0).Format("2006-01-02 15:04:05"),
 	}
 
 	if includeFull {
@@ -580,6 +585,53 @@ func BuildPostHistoryResponse(h *models.PostHistory, includeFull bool) *models.P
 	return resp
 }
 
+func lookupCategoryName(id uint) string {
+	if id == 0 {
+		return ""
+	}
+	var name string
+	config.DB.Model(&models.Category{}).Where("id = ?", id).Pluck("name", &name)
+	return name
+}
+
+func lookupColumnName(id *uint) string {
+	if id == nil || *id == 0 {
+		return ""
+	}
+	var name string
+	config.DB.Model(&models.Column{}).Where("id = ?", *id).Pluck("name", &name)
+	return name
+}
+
+func lookupTagNames(ids []uint) []string {
+	if len(ids) == 0 {
+		return nil
+	}
+	var tags []models.Tag
+	config.DB.Model(&models.Tag{}).Where("id IN ?", ids).Find(&tags)
+	names := make([]string, 0, len(tags))
+	for _, t := range tags {
+		names = append(names, t.Name)
+	}
+	return names
+}
+
+func lookupUsername(id uint) string {
+	if id == 0 {
+		return ""
+	}
+	var username string
+	config.DB.Model(&models.User{}).Where("id = ?", id).Pluck("username", &username)
+	return username
+}
+
+func formatPublishedLabel(v int) string {
+	if v == 1 {
+		return "已发布"
+	}
+	return "草稿"
+}
+
 // BuildPostHistoryResponses 构建历史记录列表响应
 func BuildPostHistoryResponses(history []models.PostHistory) []models.PostHistoryResponse {
 	var responses []models.PostHistoryResponse
@@ -621,17 +673,14 @@ func GetPostHistoryDiff(postID uint, fromVersion, toVersion uint) (*models.PostH
 		return nil, fmt.Errorf("to version not found")
 	}
 
-	fromTags, _ := json.Marshal(fromHistory.GetTagIDList())
-	toTags, _ := json.Marshal(toHistory.GetTagIDList())
-
 	fields := map[string]models.PostHistoryFieldDiff{
 		"title":       buildFieldDiff(fromHistory.Title, toHistory.Title, false),
 		"excerpt":     buildFieldDiff(fromHistory.Excerpt, toHistory.Excerpt, false),
 		"content":     buildFieldDiff(fromHistory.Content, toHistory.Content, true),
-		"categoryId":  buildFieldDiff(strconv.FormatUint(uint64(fromHistory.CategoryID), 10), strconv.FormatUint(uint64(toHistory.CategoryID), 10), false),
-		"columnId":    buildFieldDiff(formatOptionalUint(fromHistory.ColumnID), formatOptionalUint(toHistory.ColumnID), false),
-		"tagIds":      buildFieldDiff(string(fromTags), string(toTags), false),
-		"isPublished": buildFieldDiff(strconv.Itoa(fromHistory.IsPublished), strconv.Itoa(toHistory.IsPublished), false),
+		"category":    buildFieldDiff(lookupCategoryName(fromHistory.CategoryID), lookupCategoryName(toHistory.CategoryID), false),
+		"column":      buildFieldDiff(lookupColumnName(fromHistory.ColumnID), lookupColumnName(toHistory.ColumnID), false),
+		"tags":        buildFieldDiff(strings.Join(lookupTagNames(fromHistory.GetTagIDList()), ", "), strings.Join(lookupTagNames(toHistory.GetTagIDList()), ", "), false),
+		"isPublished": buildFieldDiff(formatPublishedLabel(fromHistory.IsPublished), formatPublishedLabel(toHistory.IsPublished), false),
 	}
 
 	return &models.PostHistoryDiffResponse{
diff --git a/server/repositories/snippet_repository.go b/server/repositories/snippet_repository.go
index 8b9a726..8e7fc18 100644
--- a/server/repositories/snippet_repository.go
+++ b/server/repositories/snippet_repository.go
@@ -47,12 +47,23 @@ func GetSnippetByID(id string) (*models.Snippet, error) {
 
 // BuildSnippetResponse 构建代码片段响应
 func BuildSnippetResponse(snippet *models.Snippet) *models.SnippetResponse {
-	return &models.SnippetResponse{
-		ID:    snippet.ID,
-		Title: snippet.Title,
-		Code:  snippet.Code,
-		Type:  snippet.Type,
+	resp := &models.SnippetResponse{
+		ID:          snippet.ID,
+		Title:       snippet.Title,
+		Code:        snippet.Code,
+		Type:        snippet.Type,
+		CodeTypeID:  snippet.CodeTypeID,
+		Description: snippet.Description,
+		ViewCount:   snippet.ViewCount,
 	}
+	if ct := GetCodeTypeForSnippet(snippet); ct != nil {
+		r := BuildCodeTypeResponse(ct)
+		resp.CodeType = &r
+		if resp.Type == "" {
+			resp.Type = ct.Name
+		}
+	}
+	return resp
 }
 
 // BuildSnippetsResponse 构建代码片段列表响应
@@ -79,11 +90,12 @@ func UpdateSnippet(snippet *models.Snippet) error {
 	err := config.DB.Model(&models.Snippet{}).
 		Where("id = ? AND deleted_at = ?", snippet.ID, 0).
 		Updates(map[string]interface{}{
-			"title":       snippet.Title,
-			"code":        snippet.Code,
-			"type":        snippet.Type,
-			"description": snippet.Description,
-			"updated_at":  time.Now().Unix(),
+			"title":        snippet.Title,
+			"code":         snippet.Code,
+			"type":         snippet.Type,
+			"code_type_id": snippet.CodeTypeID,
+			"description":  snippet.Description,
+			"updated_at":   time.Now().Unix(),
 		}).Error
 	if err != nil {
 		log.Printf("Error updating snippet: %v", err)
diff --git a/server/repositories/user_repository.go b/server/repositories/user_repository.go
index 97bd156..02d8a4c 100644
--- a/server/repositories/user_repository.go
+++ b/server/repositories/user_repository.go
@@ -49,27 +49,28 @@ func GetUserByID(id uint) (*models.User, error) {
 	return &user, nil
 }
 
-// GetUsers 获取所有用户 (分页)
-func GetUsers(page, pageSize int) ([]models.User, int, error) {
+// GetUsers 获取所有用户 (分页，支持 keyword 搜索)
+func GetUsers(page, pageSize int, keyword string) ([]models.User, int, error) {
 	offset := (page - 1) * pageSize
 
-	var users []models.User
-	var total int64
+	query := config.DB.Model(&models.User{}).
+		Where("users.deleted_at = ?", 0)
 
-	// 获取总数
-	err := config.DB.Model(&models.User{}).
-		Where("deleted_at = ?", 0).
-		Count(&total).Error
-	if err != nil {
+	if keyword != "" {
+		like := "%" + keyword + "%"
+		query = query.Where("users.username LIKE ? OR users.email LIKE ?", like, like)
+	}
+
+	var total int64
+	if err := query.Count(&total).Error; err != nil {
 		log.Printf("Error getting user count: %v", err)
 		return nil, 0, err
 	}
 
-	// 获取用户列表
-	err = config.DB.Model(&models.User{}).
+	var users []models.User
+	err := query.
 		Select("users.*, COALESCE(roles.name, users.role) as role").
 		Joins("LEFT JOIN roles ON users.role_id = roles.id").
-		Where("users.deleted_at = ?", 0).
 		Order("users.created_at DESC").
 		Limit(pageSize).
 		Offset(offset).
diff --git a/server/utils/operation_mapper.go b/server/utils/operation_mapper.go
index be44cd8..ddd1b5c 100644
--- a/server/utils/operation_mapper.go
+++ b/server/utils/operation_mapper.go
@@ -133,6 +133,22 @@ func GetOperationAction(path, method string) string {
 		}
 	}
 
+	// 代码类型管理
+	if strings.Contains(pathLower, "/api/admin/code-types") {
+		if methodUpper == "GET" {
+			return "查看代码类型列表"
+		}
+		if methodUpper == "POST" {
+			return "创建代码类型"
+		}
+		if methodUpper == "PUT" {
+			return "更新代码类型"
+		}
+		if methodUpper == "DELETE" {
+			return "删除代码类型"
+		}
+	}
+
 	// 代码片段管理
 	if strings.Contains(pathLower, "/api/admin/snippets") {
 		if methodUpper == "GET" {