fix(ui): improve admin layout, comment section, article list, and article detail

- CommentSection: auto-fill username/email when logged in, readonly fields, dashed dividers
- SongInput: add disabled/readonly props with visual styling
- AdminLayout: restore sticky topbar with page title, remove sidebar title/foot, full-height sidebar
- App.vue: sticky header, page title, wave decoration, fix dark mode toggle label (日/夜)
- ArticleListView: adjust column widths (status 80px, actions 160px), replace text buttons with SVG icons
- ArticleDetailView: import github-markdown-css, use markdown-body class, DOMPurify for HTML, Noto Serif SC headings

src/App.vue

@@ -1,12 +1,21 @@
 <script setup lang="ts">
+import { computed } from 'vue'
+import { useRoute, useRouter } from 'vue-router'
 import { useAuthStore } from '@/stores/auth'
-import { useRouter } from 'vue-router'
 import { useTheme } from '@/composables/useTheme'
 
 const auth = useAuthStore()
 const router = useRouter()
+const route = useRoute()
 const theme = useTheme()
 
+const pageTitle = computed(() => {
+  const t = route.meta.title as string | undefined
+  return t || ''
+})
+
+const isAdminRoute = computed(() => route.path.startsWith('/admin'))
+
 async function handleLogout() {
   try {
     await auth.logout()
@@ -21,10 +30,12 @@ async function handleLogout() {
   <div>
     <header class="app-header">
       <router-link to="/" class="brand">Mach-CMS</router-link>
+      <span v-if="pageTitle && !isAdminRoute" class="header-page-title">{{ pageTitle }}</span>
       <nav class="nav-links">
         <router-link to="/">首页</router-link>
         <router-link to="/search">搜索</router-link>
         <router-link v-if="auth.isLoggedIn" to="/admin">管理后台</router-link>
+        <router-link v-if="auth.isAdmin" to="/admin/comments">评论审核</router-link>
         <span v-if="auth.username" class="username">{{ auth.username }}</span>
         <a v-if="auth.isLoggedIn" href="#" @click.prevent="handleLogout">退出</a>
         <router-link v-else to="/login">登录</router-link>
@@ -34,15 +45,20 @@ async function handleLogout() {
         type="button"
         :title="theme.isDark ? '切至天青昼' : '切至黛墨夜'"
         @click="theme.toggle()"
-      >{{ theme.isDark ? '昼' : '夜' }}</button>
+      >{{ theme.isDark ? '日' : '夜' }}</button>
     </header>
-    <main class="app-main">
+    <main class="app-main" :class="{ 'app-main--admin': isAdminRoute }">
       <router-view v-slot="{ Component }">
         <transition name="page" mode="out-in">
           <component :is="Component" />
         </transition>
       </router-view>
     </main>
+    <footer class="wave-decoration" aria-hidden="true">
+      <svg viewBox="0 0 1440 80" preserveAspectRatio="none" xmlns="http://www.w3.org/2000/svg">
+        <path d="M0 40c240 40 480-40 720 0s480 40 720 0v40H0z" fill="currentColor"/>
+      </svg>
+    </footer>
   </div>
 </template>
 
@@ -52,6 +68,9 @@ async function handleLogout() {
 }
 
 .app-header {
+  position: sticky;
+  top: 0;
+  z-index: 1000;
   display: flex;
   align-items: center;
   gap: 20px;
@@ -63,6 +82,13 @@ async function handleLogout() {
   transition: background-color var(--song-dur-2) var(--song-ease), color var(--song-dur-2) var(--song-ease);
 }
 
+.header-page-title {
+  font-family: var(--song-font-serif);
+  font-size: 16px;
+  font-weight: 600;
+  color: var(--ac-header-text);
+}
+
 .app-header .brand {
   display: flex;
   align-items: center;
@@ -133,8 +159,33 @@ async function handleLogout() {
 }
 
 .app-main {
-  max-width: 960px;
   margin: 24px auto;
   padding: 0 16px;
+  min-height: calc(100vh - 60px - 80px);
+  max-width: 960px;
+}
+
+.app-main--admin {
+  max-width: none;
+  margin: 0;
+  padding: 0;
+  min-height: calc(100vh - 60px);
+}
+
+.wave-decoration {
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  width: 100%;
+  height: 80px;
+  pointer-events: none;
+  z-index: -1;
+  color: var(--ac-primary);
+  opacity: 0.08;
+}
+
+.wave-decoration svg {
+  width: 100%;
+  height: 100%;
 }
 </style>

src/components/CommentSection.vue

@@ -2,6 +2,7 @@
 import { ref, computed, onMounted } from 'vue'
 import { commentApi } from '@/api/client'
 import type { CommentResponse } from '@/generated/api'
+import { useAuthStore } from '@/stores/auth'
 import SongButton from '@/components/SongButton.vue'
 import SongInput from '@/components/SongInput.vue'
 
@@ -16,6 +17,17 @@ const error = ref<string | null>(null)
 const submitMessage = ref<string | null>(null)
 const formOpen = ref(false)
 
+const authStore = useAuthStore()
+const isLoggedIn = computed(() => authStore.isLoggedIn)
+
+function autoFillUser() {
+  if (isLoggedIn.value && authStore.username) {
+    authorName.value = authStore.username
+  }
+}
+
+const readonlyFields = computed(() => isLoggedIn.value)
+
 const authorName = ref('')
 const authorEmail = ref('')
 const content = ref('')
@@ -78,6 +90,7 @@ async function onSubmit() {
 
 function openForm() {
   error.value = null
+  autoFillUser()
   formOpen.value = true
 }
 
@@ -110,7 +123,10 @@ async function toggleCommentStar(comment: CommentResponse) {
   }
 }
 
-onMounted(load)
+onMounted(() => {
+  autoFillUser()
+  load()
+})
 </script>
 
 <template>
@@ -143,8 +159,8 @@ onMounted(load)
       <transition name="form-fade">
         <form v-if="formOpen" class="comment-form" @submit.prevent="onSubmit">
           <p v-if="error" class="error-text">{{ error }}</p>
-          <SongInput v-model="authorName" label="昵称" required placeholder="你的署名" :maxlength="100" />
-          <SongInput v-model="authorEmail" label="邮箱（可选）" type="email" placeholder="用于联系，不公开" />
+          <SongInput v-model="authorName" label="昵称" required placeholder="你的署名" :maxlength="100" :readonly="readonlyFields" :disabled="readonlyFields" />
+          <SongInput v-model="authorEmail" label="邮箱（可选）" type="email" placeholder="用于联系，不公开" :readonly="readonlyFields" :disabled="readonlyFields" />
           <SongInput v-model="content" label="内容" textarea :rows="4" required placeholder="写下你的评语..." :maxlength="2000" />
           <div class="comment-form-actions">
             <SongButton type="text" size="small" @click="formOpen = false">止</SongButton>
@@ -191,6 +207,11 @@ onMounted(load)
   gap: 16px;
 }
 
+.comment-item:not(:last-child) .comment-card {
+  border-bottom: 1px dashed #d4c4b0;
+  padding-bottom: 18px;
+}
+
 .comment-node {
   width: 11px;
   height: 11px;

src/components/SongInput.vue

@@ -9,8 +9,10 @@ withDefaults(
     rows?: number
     textarea?: boolean
     maxlength?: number
+    disabled?: boolean
+    readonly?: boolean
   }>(),
-  { label: '', modelValue: '', placeholder: '', type: 'text', required: false, rows: 3, textarea: false, maxlength: undefined }
+  { label: '', modelValue: '', placeholder: '', type: 'text', required: false, rows: 3, textarea: false, maxlength: undefined, disabled: false, readonly: false }
 )
 defineEmits<{ 'update:modelValue': [value: string] }>()
 defineOptions({ name: 'SongInput' })
@@ -28,6 +30,8 @@ defineOptions({ name: 'SongInput' })
       :placeholder="placeholder"
       :rows="rows"
       :maxlength="maxlength"
+      :disabled="disabled"
+      :readonly="readonly"
       @input="$emit('update:modelValue', ($event.target as HTMLTextAreaElement).value)"
     />
     <input
@@ -37,6 +41,8 @@ defineOptions({ name: 'SongInput' })
       :value="modelValue"
       :placeholder="placeholder"
       :maxlength="maxlength"
+      :disabled="disabled"
+      :readonly="readonly"
       @input="$emit('update:modelValue', ($event.target as HTMLInputElement).value)"
     />
   </label>
@@ -91,4 +97,11 @@ defineOptions({ name: 'SongInput' })
   outline: none;
   border-color: var(--song-primary);
 }
+
+.song-field__input:disabled,
+.song-field__input[readonly] {
+  background: var(--ac-surface);
+  color: var(--ac-text-secondary);
+  cursor: not-allowed;
+}
 </style>

src/views/ArticleDetailView.vue

@@ -3,11 +3,13 @@ import { ref, computed, watch } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 import { articleApi } from '@/api/client'
 import { renderMarkdown } from '@/utils/markdown'
+import DOMPurify from 'dompurify'
 import { setPageMeta } from '@/utils/seo'
 import { useApi } from '@/composables/useApi'
 import CommentSection from '@/components/CommentSection.vue'
 import ArticleMetaBar from '@/components/ArticleMetaBar.vue'
 import type { ArticleDetail, ResponseArticleDetail } from '@/generated/api'
+import 'github-markdown-css/github-markdown-light.css'
 
 const route = useRoute()
 const router = useRouter()
@@ -23,8 +25,17 @@ const starred = ref(false)
 const starCount = ref(0)
 const starBusy = ref(false)
 
+const isHtmlContent = computed(() => {
+  const c = article.value?.content
+  if (!c) return false
+  return /<[a-z][\s\S]*>/i.test(c)
+})
+
 const renderedContent = computed(() => {
   if (!article.value?.content) return ''
+  if (isHtmlContent.value) {
+    return DOMPurify.sanitize(article.value.content)
+  }
   return renderMarkdown(article.value.content)
 })
 
@@ -100,7 +111,7 @@ watch(slug, load, { immediate: true })
     <div class="detail-tags">
       <span v-for="tag in article.tagNames" :key="tag" class="tag">{{ tag }}</span>
     </div>
-    <div class="article-content" v-html="renderedContent"></div>
+    <div class="article-content markdown-body" v-html="renderedContent"></div>
     <CommentSection :slug="slug" />
   </article>
 </template>
@@ -119,6 +130,7 @@ watch(slug, load, { immediate: true })
   letter-spacing: 0.02em;
   margin: 0 0 12px;
   font-size: 28px;
+  line-height: 1.5;
 }
 
 .detail-summary {
@@ -152,6 +164,16 @@ watch(slug, load, { immediate: true })
   border-top: 1px solid var(--ac-border);
   padding-top: 20px;
   word-break: break-word;
+  background: transparent;
+  color: var(--ac-text);
+  font-family: var(--song-font-sans), system-ui, sans-serif;
+}
+
+:deep(.markdown-body h1),
+:deep(.markdown-body h2),
+:deep(.markdown-body h3),
+:deep(.markdown-body h4) {
+  font-family: 'Noto Serif SC', 'SimSun', 'STSong', serif;
 }
 
 .hint-text {

src/views/admin/AdminLayout.vue

@@ -1,45 +1,27 @@
 <script setup lang="ts">
+import { computed } from 'vue'
+import { useRoute } from 'vue-router'
 import { useAuthStore } from '@/stores/auth'
-import { useRouter } from 'vue-router'
-import { useTheme } from '@/composables/useTheme'
 
 const auth = useAuthStore()
-const router = useRouter()
-const theme = useTheme()
+const route = useRoute()
 
-async function handleLogout() {
-  try {
-    await auth.logout()
-  } catch (e) {
-    console.error(e)
-  }
-  router.push('/login')
-}
+const pageTitle = computed(() => (route.meta.title as string) || '')
 </script>
 
 <template>
   <div class="admin-layout">
     <aside class="sidebar">
-      <h2 class="sidebar-title">管理后台</h2>
       <nav class="sidebar-nav">
         <router-link to="/admin/articles">文章管理</router-link>
         <router-link to="/admin/tags">标签管理</router-link>
         <router-link v-if="auth.isAdmin" to="/admin/users">用户管理</router-link>
         <router-link v-if="auth.isAdmin" to="/admin/comments">评论审核</router-link>
       </nav>
-      <div class="sidebar-foot">
-        <button
-          class="theme-toggle"
-          type="button"
-          :title="theme.isDark ? '切至天青昼' : '切至黛墨夜'"
-          @click="theme.toggle()"
-        >{{ theme.isDark ? '昼' : '夜' }}</button>
-      </div>
     </aside>
     <div class="content-wrap">
       <header class="topbar">
-        <span class="current-user">{{ auth.username || '管理员' }}</span>
-        <a href="#" class="logout-link" @click.prevent="handleLogout">退出</a>
+        <span class="topbar-title">{{ pageTitle }}</span>
       </header>
       <main class="content">
         <router-view v-slot="{ Component }">
@@ -63,19 +45,9 @@ async function handleLogout() {
   flex-shrink: 0;
   background: var(--ac-header-bg);
   padding: 20px 12px;
-  display: flex;
-  flex-direction: column;
   transition: background-color var(--song-dur-2) var(--song-ease);
 }
 
-.sidebar-title {
-  color: var(--ac-header-text);
-  font-size: 15px;
-  font-weight: 400;
-  margin: 0 0 16px;
-  padding-left: 8px;
-}
-
 .sidebar-nav {
   display: flex;
   flex-direction: column;
@@ -98,31 +70,6 @@ async function handleLogout() {
   color: var(--ac-header-text);
 }
 
-.sidebar-foot {
-  margin-top: auto;
-  padding: 12px 8px 0;
-}
-
-.theme-toggle {
-  width: 100%;
-  height: 34px;
-  border: 1px solid var(--ac-border);
-  border-radius: var(--song-radius-m);
-  background: transparent;
-  color: var(--ac-header-muted);
-  font-family: var(--song-font-serif);
-  font-size: 15px;
-  letter-spacing: 0.1em;
-  cursor: pointer;
-  transition: color var(--song-dur-1) var(--song-ease), border-color var(--song-dur-1) var(--song-ease), background var(--song-dur-1) var(--song-ease);
-}
-
-.theme-toggle:hover {
-  color: var(--ac-header-text);
-  border-color: var(--ac-header-muted);
-  background: var(--ac-header-active-bg);
-}
-
 .content-wrap {
   flex: 1;
   display: flex;
@@ -131,25 +78,22 @@ async function handleLogout() {
 }
 
 .topbar {
+  position: sticky;
+  top: 0;
+  z-index: 1000;
   display: flex;
   align-items: center;
-  justify-content: flex-end;
-  gap: 16px;
-  height: 52px;
   padding: 0 20px;
+  height: 52px;
   background: var(--ac-bg-card);
   border-bottom: 1px solid var(--ac-border);
 }
 
-.current-user {
-  color: var(--ac-text-secondary);
-  font-size: 14px;
-}
-
-.logout-link {
-  color: var(--ac-danger);
-  text-decoration: none;
-  font-size: 14px;
+.topbar-title {
+  font-family: var(--song-font-serif);
+  font-size: 16px;
+  font-weight: 600;
+  color: var(--ac-text);
 }
 
 .content {

src/views/admin/ArticleListView.vue

@@ -140,7 +140,7 @@ onMounted(load)
       <tbody>
         <tr v-for="article in articles" :key="article.id">
           <td class="title-cell">{{ article.title }}</td>
-          <td>
+          <td class="status-cell">
             <span
               class="status-badge"
               :class="{
@@ -152,17 +152,32 @@ onMounted(load)
               {{ statusLabel(article.status) }}
             </span>
           </td>
-          <td>{{ formatDate(article.publishedAt || article.createdAt) }}</td>
-          <td>
+          <td class="date-cell">{{ formatDate(article.publishedAt || article.createdAt) }}</td>
+          <td class="actions-cell">
             <div class="actions">
-              <button class="btn-link" @click="onEdit(article)">编辑</button>
-              <button v-if="article.status === ArticleStatus.Draft" class="btn-link" @click="onPublish(article)">
-                发布
+              <button class="icon-btn" type="button" title="编辑" @click="onEdit(article)">
+                <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="16" height="16" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+                  <path d="M17 3a2.828 2.828 0 1 1 4 4L7.5 20.5 2 22l1.5-5.5L17 3z" />
+                </svg>
               </button>
-              <button v-if="article.status === ArticleStatus.Published" class="btn-link" @click="onArchive(article)">
-                归档
+              <button v-if="article.status === ArticleStatus.Draft" class="icon-btn" type="button" title="发布" @click="onPublish(article)">
+                <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="16" height="16" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+                  <path d="M5 12l5 5L20 7" />
+                </svg>
+              </button>
+              <button v-if="article.status === ArticleStatus.Published" class="icon-btn" type="button" title="归档" @click="onArchive(article)">
+                <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="16" height="16" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+                  <path d="M22 8L12 3 2 8v10a2 2 0 0 0 2 2h16a2 2 0 0 0 2-2V8z" />
+                  <path d="M2 8l10 5 10-5" />
+                </svg>
+              </button>
+              <button class="icon-btn icon-btn--danger" type="button" title="删除" @click="onDelete(article)">
+                <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="16" height="16" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+                  <path d="M3 6h18" />
+                  <path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6" />
+                  <path d="M8 6V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2" />
+                </svg>
               </button>
-              <button class="btn-link danger" @click="onDelete(article)">删除</button>
             </div>
           </td>
         </tr>
@@ -207,6 +222,7 @@ onMounted(load)
 
 .article-table {
   width: 100%;
+  table-layout: fixed;
   border-collapse: collapse;
   background: var(--ac-bg-card);
   border: 1px solid var(--ac-border);
@@ -227,6 +243,23 @@ onMounted(load)
   color: var(--ac-text-secondary);
 }
 
+.status-cell {
+  width: 80px;
+  min-width: 80px;
+  white-space: nowrap;
+}
+
+.date-cell {
+  width: 200px;
+  white-space: nowrap;
+}
+
+.actions-cell {
+  width: 160px;
+  min-width: 160px;
+  white-space: nowrap;
+}
+
 .title-cell {
   font-family: 'Noto Serif SC', 'SimSun', 'STSong', serif;
   font-weight: 600;
@@ -255,22 +288,36 @@ onMounted(load)
 
 .actions {
   display: flex;
-  gap: 10px;
+  align-items: center;
+  gap: 8px;
 }
 
-.btn-link {
+.icon-btn {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 28px;
+  height: 28px;
   border: none;
+  border-radius: var(--song-radius-s);
   background: none;
   color: var(--ac-primary-ink);
   cursor: pointer;
-  font-size: 13px;
-  padding: 0;
+  transition: background var(--song-dur-1) var(--song-ease), color var(--song-dur-1) var(--song-ease);
 }
 
-.btn-link.danger {
+.icon-btn:hover {
+  background: var(--ac-active);
+}
+
+.icon-btn--danger {
   color: var(--ac-danger-ink);
 }
 
+.icon-btn--danger:hover {
+  background: var(--ac-danger-bg);
+}
+
 .error-text {
   color: var(--ac-danger);
 }