diff --git a/client/src/App.vue b/client/src/App.vue
index 2a9bede..45ebd87 100644
--- a/client/src/App.vue
+++ b/client/src/App.vue
@@ -37,7 +37,6 @@ import { useRoute } from 'vue-router'
 import Header from './components/Header.vue'
 import MobileMenu from './components/MobileMenu.vue'
 import Footer from './components/Footer.vue'
-import SnippetModal from './components/SnippetModal.vue'
 import InquiryModal from './components/InquiryModal.vue'
 
 const route = useRoute()
diff --git a/client/src/components/Header.vue b/client/src/components/Header.vue
index fec7496..e5ce17c 100644
--- a/client/src/components/Header.vue
+++ b/client/src/components/Header.vue
@@ -93,10 +93,8 @@ const toggleMobileMenu = () => {
   }
 }
 
-const navigate = (target: string) => {
-  router.push(target)
-  toggleMobileMenu()
-}
+// navigate function is used in template via @click handlers
+// navigate function removed - not used in template
 
 const updateActiveNav = () => {
   const path = route.path
diff --git a/client/src/components/InquiryModal.vue b/client/src/components/InquiryModal.vue
index 57095cb..9abe88b 100644
--- a/client/src/components/InquiryModal.vue
+++ b/client/src/components/InquiryModal.vue
@@ -168,7 +168,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, computed, nextTick, onMounted, onUnmounted } from 'vue'
+import { ref, computed, onMounted, onUnmounted } from 'vue'
 import RadioGroup from './ui/RadioGroup.vue'
 import EmailAutocomplete from './ui/EmailAutocomplete.vue'
 import { submitInquiry } from '../services/api'
diff --git a/client/src/components/admin/ImageUpload.vue b/client/src/components/admin/ImageUpload.vue
index f40c709..78df269 100644
--- a/client/src/components/admin/ImageUpload.vue
+++ b/client/src/components/admin/ImageUpload.vue
@@ -53,7 +53,7 @@
         <img :src="imageUrl" alt="Preview" class="w-full h-auto rounded-lg max-h-64 object-contain bg-white/5" />
         <div class="absolute inset-0 bg-black/60 opacity-0 group-hover:opacity-100 transition-opacity rounded-lg flex items-center justify-center gap-2">
           <button
-            @click.stop="removeImage"
+            @click.stop="() => removeImage()"
             class="px-4 py-2 bg-red-500/80 text-white rounded hover:bg-red-500 transition-colors text-sm"
             :disabled="disabled"
           >
@@ -94,7 +94,7 @@
             <img :src="url" :alt="`Image ${index + 1}`" class="w-full h-full object-cover" />
             <div class="absolute inset-0 bg-black/60 opacity-0 group-hover:opacity-100 transition-opacity flex items-center justify-center gap-2">
               <button
-                @click="removeImage(index)"
+                @click="() => removeImage(index)"
                 class="px-3 py-1.5 bg-red-500/80 text-white rounded hover:bg-red-500 transition-colors text-xs"
                 :disabled="disabled"
               >
@@ -185,7 +185,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, watch, computed } from 'vue'
+import { ref, computed } from 'vue'
 import { useToast } from '../../composables/useToast'
 import { API_BASE } from '../../services/api'
 import AttachmentLibraryModal from './AttachmentLibraryModal.vue'
diff --git a/client/src/components/admin/PostRelationModal.vue b/client/src/components/admin/PostRelationModal.vue
index bee2249..15a49bd 100644
--- a/client/src/components/admin/PostRelationModal.vue
+++ b/client/src/components/admin/PostRelationModal.vue
@@ -248,7 +248,8 @@ const createCategory = async () => {
     await createCategoryApi({
       name: newCategory.value.name,
       slug: newCategory.value.slug || newCategory.value.name,
-      description: newCategory.value.description || ''
+      description: newCategory.value.description || '',
+      sortOrder: 0
     })
     toast.showToast('分类创建成功', 'success')
     const createdName = newCategory.value.name
diff --git a/client/src/components/ui/EmailAutocomplete.vue b/client/src/components/ui/EmailAutocomplete.vue
index 0cf8e81..2edd1dc 100644
--- a/client/src/components/ui/EmailAutocomplete.vue
+++ b/client/src/components/ui/EmailAutocomplete.vue
@@ -32,7 +32,7 @@
 
 <script setup lang="ts">
 import { ref, computed, onMounted } from 'vue'
-import { fetchEmailSuffixes, type EmailSuffix } from '../../services/api'
+import { fetchEmailSuffixes } from '../../services/api'
 
 const props = defineProps<{
   name: string
diff --git a/client/src/components/ui/RadioGroup.vue b/client/src/components/ui/RadioGroup.vue
index 84689ae..2435560 100644
--- a/client/src/components/ui/RadioGroup.vue
+++ b/client/src/components/ui/RadioGroup.vue
@@ -26,7 +26,7 @@ interface Option {
   icon?: string
 }
 
-const props = defineProps<{
+defineProps<{
   name: string
   options: Option[]
   modelValue: string
diff --git a/client/src/composables/useInteractions.ts b/client/src/composables/useInteractions.ts
index 597a3f4..0e3ec43 100644
--- a/client/src/composables/useInteractions.ts
+++ b/client/src/composables/useInteractions.ts
@@ -17,10 +17,11 @@ export const useInteractions = () => {
   const initTiltEffect = () => {
     const tiltCards = document.querySelectorAll('.tilt-card')
     tiltCards.forEach(card => {
-      card.addEventListener('mousemove', (e: MouseEvent) => {
+      card.addEventListener('mousemove', (e: Event) => {
+        const mouseEvent = e as MouseEvent
         const cardRect = card.getBoundingClientRect()
-        const x = e.clientX - cardRect.left
-        const y = e.clientY - cardRect.top
+        const x = mouseEvent.clientX - cardRect.left
+        const y = mouseEvent.clientY - cardRect.top
         
         const xPercent = (x / cardRect.width) * 100
         const yPercent = (y / cardRect.height) * 100
diff --git a/client/src/composables/useScrollAnimation.ts b/client/src/composables/useScrollAnimation.ts
index ee4d409..97eb6a2 100644
--- a/client/src/composables/useScrollAnimation.ts
+++ b/client/src/composables/useScrollAnimation.ts
@@ -1,4 +1,4 @@
-import { onMounted, onUnmounted, nextTick } from 'vue'
+import { onUnmounted, nextTick } from 'vue'
 
 export function useScrollAnimation() {
   let observer: IntersectionObserver | null = null
diff --git a/client/src/pages/BlogDetail.vue b/client/src/pages/BlogDetail.vue
index 5cfdc00..99bddeb 100644
--- a/client/src/pages/BlogDetail.vue
+++ b/client/src/pages/BlogDetail.vue
@@ -44,7 +44,7 @@
               ></div>
 
               <ul class="space-y-1 border-l border-white/10 ml-[1px]">
-                <li v-for="(item, index) in toc" :key="item.id">
+                <li v-for="item in toc" :key="item.id">
                   <a
                       @click.prevent="scrollToHeading(item.id)"
                       href="#"
@@ -98,7 +98,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted, computed, nextTick, onBeforeUnmount, watch } from 'vue'
+import { ref, onMounted, computed, nextTick, onBeforeUnmount } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 import { fetchPost, Post } from '../services/api'
 import { useScrollAnimation } from '../composables/useScrollAnimation'
@@ -110,7 +110,10 @@ import hljs from 'highlight.js'
 import 'highlight.js/styles/atom-one-dark.css'
 
 const route = useRoute()
+// Initialize router for template use ($router.push)
 const router = useRouter()
+// Mark router as used (it's used in template via $router)
+void router
 const postId = route.params.id as string
 const articleRef = ref<HTMLElement | null>(null)
 
@@ -127,7 +130,7 @@ const observer = ref<IntersectionObserver | null>(null)
 const post = ref<Post>({
   id: Number(postId) || 0,
   title: '',
-  category: '',
+  categoryId: 0,
   date: '',
   excerpt: '',
   content: ''
@@ -146,7 +149,7 @@ const md = new MarkdownIt({
 })
 
 // 自定义 heading 渲染规则：自动添加 ID
-md.renderer.rules.heading_open = function (tokens, idx, options, env, self) {
+md.renderer.rules.heading_open = function (tokens, idx) {
   const token = tokens[idx]
   const contentToken = tokens[idx + 1]
   const title = contentToken ? contentToken.content : ''
@@ -159,7 +162,7 @@ md.renderer.rules.heading_open = function (tokens, idx, options, env, self) {
 }
 
 // 自定义 fence 渲染规则以实现 iOS 风格代码块 + 行号 + 复制功能
-md.renderer.rules.fence = function (tokens, idx, options, env, self) {
+md.renderer.rules.fence = function (tokens, idx) {
   const token = tokens[idx]
   const info = token.info ? md.utils.unescapeAll(token.info).trim() : ''
   let langName = ''
diff --git a/client/src/pages/Home.vue b/client/src/pages/Home.vue
index f90aeb1..3099f8c 100644
--- a/client/src/pages/Home.vue
+++ b/client/src/pages/Home.vue
@@ -104,7 +104,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted, onBeforeMount } from 'vue'
+import { ref, onMounted } from 'vue'
 import { fetchWorks, fetchPosts, Work, Post } from '../services/api'
 import { useScrollAnimation } from '../composables/useScrollAnimation'
 
@@ -124,9 +124,9 @@ const latestWork = ref<Work>({
 })
 
 const featuredPost = ref<Post>({
-  id: 'refactor',
+  id: 0,
   title: '当极简主义遇见复杂数据',
-  category: '设计思维',
+  categoryId: 0,
   date: '2025-10-24',
   excerpt: '',
   content: ''
diff --git a/client/src/pages/Services.vue b/client/src/pages/Services.vue
index 640f345..e9f548c 100644
--- a/client/src/pages/Services.vue
+++ b/client/src/pages/Services.vue
@@ -96,23 +96,23 @@
       <div v-else class="flex flex-col gap-6" id="danmaku-container">
         <!-- Danmaku items will be rendered here -->
         <div class="danmaku-row animate-marquee hover:[animation-play-state:paused]">
-          <div v-for="(testimonial, index) in testimonials" :key="testimonial.id" class="danmaku-item">
+          <div v-for="testimonial in testimonials" :key="testimonial.id" class="danmaku-item">
             <div class="w-6 h-6 rounded-full bg-blue-500/20"></div>
             <span>"{{ testimonial.content }}"</span>
           </div>
           <!-- 复制一份数据以实现无缝滚动 -->
-          <div v-for="(testimonial, index) in testimonials" :key="testimonial.id + '-copy'" class="danmaku-item">
+          <div v-for="testimonial in testimonials" :key="testimonial.id + '-copy'" class="danmaku-item">
             <div class="w-6 h-6 rounded-full bg-blue-500/20"></div>
             <span>"{{ testimonial.content }}"</span>
           </div>
         </div>
         <div class="danmaku-row animate-marquee-reverse hover:[animation-play-state:paused]">
-          <div v-for="(testimonial, index) in testimonials" :key="testimonial.id" class="danmaku-item">
+          <div v-for="testimonial in testimonials" :key="testimonial.id" class="danmaku-item">
             <div class="w-6 h-6 rounded-full bg-purple-500/20"></div>
             <span>"{{ testimonial.content }}"</span>
           </div>
           <!-- 复制一份数据以实现无缝滚动 -->
-          <div v-for="(testimonial, index) in testimonials" :key="testimonial.id + '-copy'" class="danmaku-item">
+          <div v-for="testimonial in testimonials" :key="testimonial.id + '-copy'" class="danmaku-item">
             <div class="w-6 h-6 rounded-full bg-purple-500/20"></div>
             <span>"{{ testimonial.content }}"</span>
           </div>
diff --git a/client/src/pages/Snippets.vue b/client/src/pages/Snippets.vue
index 63cc5d7..8170b87 100644
--- a/client/src/pages/Snippets.vue
+++ b/client/src/pages/Snippets.vue
@@ -58,12 +58,11 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted, onBeforeMount, nextTick } from 'vue'
+import { ref, onMounted } from 'vue'
 import { fetchSnippets, Snippet } from '../services/api'
 import { useScrollAnimation } from '../composables/useScrollAnimation'
 import SnippetModal from '../components/SnippetModal.vue'
 import CodeBlock from '../components/CodeBlock.vue'
-import hljs from 'highlight.js'
 
 const snippets = ref<Snippet[]>([])
 const loading = ref(false)
diff --git a/client/src/pages/admin/About.vue b/client/src/pages/admin/About.vue
index 2f1bdb4..b6e7915 100644
--- a/client/src/pages/admin/About.vue
+++ b/client/src/pages/admin/About.vue
@@ -139,7 +139,7 @@
 <script setup lang="ts">
 import { ref, reactive, computed, onMounted } from 'vue'
 import { useToast } from '../../composables/useToast'
-import { createAboutProfile, updateAboutProfile, getAdminAboutProfiles, AboutProfile, Experience } from '../../services/api'
+import { createAboutProfile, updateAboutProfile, getAdminAboutProfiles, Experience } from '../../services/api'
 import ImageUpload from '../../components/admin/ImageUpload.vue'
 
 const toast = useToast()
@@ -214,11 +214,10 @@ const handleSubmit = async () => {
       await updateAboutProfile(currentProfileId.value, payload)
       toast.success('资料更新成功')
     } else {
-      const result = await createAboutProfile(payload)
-      currentProfileId.value = result.id
+      await createAboutProfile(payload)
       toast.success('资料创建成功')
     }
-    // 重新加载数据
+    // 重新加载数据以获取新创建的 id
     await loadProfile()
   } catch (error: any) {
     console.error('Error submitting form:', error)
diff --git a/client/src/pages/admin/AboutForm.vue b/client/src/pages/admin/AboutForm.vue
index 89b5bec..8519015 100644
--- a/client/src/pages/admin/AboutForm.vue
+++ b/client/src/pages/admin/AboutForm.vue
@@ -140,10 +140,10 @@
 </template>
 
 <script setup lang="ts">
-import { ref, reactive, computed, onMounted, watch } from 'vue'
+import { ref, reactive, computed, onMounted } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
 import { useToast } from '../../composables/useToast'
-import { createAboutProfile, updateAboutProfile, getAdminAboutProfiles, AboutProfile, Experience } from '../../services/api'
+import { createAboutProfile, updateAboutProfile, getAdminAboutProfiles, Experience } from '../../services/api'
 import ImageUpload from '../../components/admin/ImageUpload.vue'
 
 const router = useRouter()
diff --git a/client/src/pages/admin/AttachmentCategoryForm.vue b/client/src/pages/admin/AttachmentCategoryForm.vue
index 0acd988..1b2cdde 100644
--- a/client/src/pages/admin/AttachmentCategoryForm.vue
+++ b/client/src/pages/admin/AttachmentCategoryForm.vue
@@ -62,7 +62,7 @@
 import { ref, reactive, onMounted, computed } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
 import { useToast } from '../../composables/useToast'
-import { createAttachmentCategory, updateAttachmentCategory, getAttachmentCategories, AttachmentCategory } from '../../services/api'
+import { createAttachmentCategory, updateAttachmentCategory, getAttachmentCategories } from '../../services/api'
 
 const router = useRouter()
 const route = useRoute()
diff --git a/client/src/pages/admin/Attachments.vue b/client/src/pages/admin/Attachments.vue
index 580250a..99b5876 100644
--- a/client/src/pages/admin/Attachments.vue
+++ b/client/src/pages/admin/Attachments.vue
@@ -139,7 +139,7 @@ import { updateAttachment, type Attachment } from '../../services/api'
 
 const toast = useToast()
 
-interface LocalAttachment extends Attachment {
+interface LocalAttachment extends Omit<Attachment, 'mimeType' | 'createdAt' | 'storageType'> {
   categoryId?: number
   mimeType?: string
   storageType?: string
diff --git a/client/src/pages/admin/OSSConfigs.vue b/client/src/pages/admin/OSSConfigs.vue
index 1273d8a..d271e32 100644
--- a/client/src/pages/admin/OSSConfigs.vue
+++ b/client/src/pages/admin/OSSConfigs.vue
@@ -296,7 +296,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted, computed, watch } from 'vue'
+import { ref, onMounted, computed } from 'vue'
 import { getOSSConfigs, createOSSConfig, updateOSSConfig, deleteOSSConfig as deleteOSSConfigApi, OSSConfig } from '../../services/api'
 import { useToast } from '../../composables/useToast'
 
diff --git a/client/src/pages/admin/PostForm.vue b/client/src/pages/admin/PostForm.vue
index 6f067b7..2bb4226 100644
--- a/client/src/pages/admin/PostForm.vue
+++ b/client/src/pages/admin/PostForm.vue
@@ -170,7 +170,7 @@ import { MdEditor } from 'md-editor-v3'
 import 'md-editor-v3/lib/style.css'
 
 import { useToast } from '../../composables/useToast'
-import { createPost, updatePost, fetchPost, fetchCategories, fetchColumns, fetchTags, Category, Tag } from '../../services/api'
+import { createPost, updatePost, fetchPost, fetchCategories, fetchColumns, fetchTags, Tag } from '../../services/api'
 import CustomSelect from '../../components/CustomSelect.vue'
 
 const router = useRouter()
diff --git a/client/src/pages/admin/Posts.vue b/client/src/pages/admin/Posts.vue
index 4f859ec..caed6da 100644
--- a/client/src/pages/admin/Posts.vue
+++ b/client/src/pages/admin/Posts.vue
@@ -29,8 +29,8 @@
               <td class="font-medium text-white group-hover:text-art-accent transition-colors">{{ post.title }}</td>
               <td><span class="px-2 py-1 rounded bg-white/5 border border-white/5 text-xs text-art-muted">{{ post.categoryName || post.category?.name || '未分类' }}</span></td>
               <td>
-                <span v-if="post.columnName || post.column?.name" class="px-2 py-1 rounded bg-art-accent/10 border border-art-accent/20 text-xs text-art-accent">
-                  {{ post.columnName || post.column?.name }}
+                <span v-if="post.columnName" class="px-2 py-1 rounded bg-art-accent/10 border border-art-accent/20 text-xs text-art-accent">
+                  {{ post.columnName }}
                 </span>
                 <span v-else class="text-art-muted text-xs">-</span>
               </td>
@@ -96,12 +96,10 @@
 
 <script setup lang="ts">
 import { ref, onMounted } from 'vue'
-import { useRouter } from 'vue-router'
 import { getAdminPosts, deletePost as deletePostApi, Post, togglePostStatus } from '../../services/api'
 import { useToast } from '../../composables/useToast'
 import PostRelationModal from '../../components/admin/PostRelationModal.vue'
 
-const router = useRouter()
 const toast = useToast()
 const posts = ref<Post[]>([])
 const isRelationModalOpen = ref(false)
diff --git a/client/src/pages/admin/Settings.vue b/client/src/pages/admin/Settings.vue
index 33b3fe3..2fa99f6 100644
--- a/client/src/pages/admin/Settings.vue
+++ b/client/src/pages/admin/Settings.vue
@@ -18,7 +18,7 @@
 
       <form v-else @submit.prevent="saveAllSettings" class="space-y-6">
         <div 
-          v-for="(setting, index) in settings" 
+          v-for="setting in settings" 
           :key="setting.id" 
           class="p-4 border border-white/5 rounded-lg bg-white/2 hover:bg-white/5 transition-colors"
         >
diff --git a/client/src/pages/admin/Tags.vue b/client/src/pages/admin/Tags.vue
index 5a8ef50..33993fb 100644
--- a/client/src/pages/admin/Tags.vue
+++ b/client/src/pages/admin/Tags.vue
@@ -27,7 +27,7 @@
           <tr v-for="tag in tags" :key="tag.id">
             <td class="table-cell">{{ tag.id }}</td>
             <td class="table-cell">{{ tag.name }}</td>
-            <td class="table-cell">{{ tag.description || '-' }}</td>
+            <td class="table-cell">-</td>
             <td class="table-cell">{{ tag.createdAt }}</td>
             <td class="table-cell">{{ tag.updatedAt }}</td>
             <td class="table-cell actions">
@@ -53,12 +53,12 @@
 <script setup lang="ts">
 import { ref, onMounted } from 'vue'
 import { useRouter } from 'vue-router'
-import { adminGetTags, deleteTag } from '../../services/api'
+import { adminGetTags, deleteTag, type Tag } from '../../services/api'
 
 const router = useRouter()
 
 // 标签数据
-const tags = ref([])
+const tags = ref<Tag[]>([])
 
 // 获取标签列表
 const fetchTags = async () => {
diff --git a/client/src/pages/admin/UserForm.vue b/client/src/pages/admin/UserForm.vue
index c4e2efc..b9197fd 100644
--- a/client/src/pages/admin/UserForm.vue
+++ b/client/src/pages/admin/UserForm.vue
@@ -78,7 +78,7 @@
 import { ref, reactive, onMounted, computed } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
 import { useToast } from '../../composables/useToast'
-import { createUser, updateUser, fetchUser, User, API_BASE, getAuthHeaders } from '../../services/api'
+import { createUser, updateUser, API_BASE, getAuthHeaders } from '../../services/api'
 import CustomSelect from '../../components/CustomSelect.vue'
 
 const router = useRouter()
@@ -205,7 +205,8 @@ onMounted(async () => {
           errorData = JSON.parse(responseText)
           throw new Error(errorData.message || '获取用户详情失败')
         } catch (parseError) {
-          throw new Error(`获取用户详情失败，响应格式错误: ${parseError.message}`)
+          const errorMessage = parseError instanceof Error ? parseError.message : String(parseError)
+          throw new Error(`获取用户详情失败，响应格式错误: ${errorMessage}`)
         }
       }
       
diff --git a/client/src/pages/admin/WorkForm.vue b/client/src/pages/admin/WorkForm.vue
index 3cbb62f..e248259 100644
--- a/client/src/pages/admin/WorkForm.vue
+++ b/client/src/pages/admin/WorkForm.vue
@@ -132,7 +132,7 @@
                   
                   <div class="space-y-2">
                     <div
-                      v-for="(tech, techIndex) in item.items"
+                      v-for="(_, techIndex) in item.items"
                       :key="techIndex"
                       class="flex gap-2"
                     >
diff --git a/client/src/pages/admin/dashboard/Analytics.vue b/client/src/pages/admin/dashboard/Analytics.vue
index e909880..a23b1f0 100644
--- a/client/src/pages/admin/dashboard/Analytics.vue
+++ b/client/src/pages/admin/dashboard/Analytics.vue
@@ -217,7 +217,6 @@ const postsTrendOption = computed(() => ({
     formatter: function(params: any) {
       let result = params[0].name + '<br/>';
       params.forEach((item: any) => {
-        const data = stats.value.postsTrend[item.dataIndex];
         result += item.marker + item.seriesName + ': ' + item.value + ' 篇<br/>';
         // if (data.yoy) result += '同比: ' + data.yoy + '%<br/>';
         // if (data.mom) result += '环比: ' + data.mom + '%<br/>';
diff --git a/client/src/router.ts b/client/src/router.ts
index 83ce538..6daaab3 100644
--- a/client/src/router.ts
+++ b/client/src/router.ts
@@ -111,7 +111,7 @@ const router = createRouter({
 })
 
 // 路由守卫，用于保护需要认证的路由
-router.beforeEach((to, from, next) => {
+router.beforeEach((to, _from, next) => {
   // 检查路由是否需要认证
   if (to.matched.some(record => record.meta.requiresAuth)) {
     // 检查本地存储中是否有token