diff --git a/frontend/src/pages/chat/search.vue b/frontend/src/pages/chat/search.vue
new file mode 100644
index 0000000..53e37d9
--- /dev/null
+++ b/frontend/src/pages/chat/search.vue
@@ -0,0 +1,217 @@
+<!--
+  消息搜索页
+
+  设计系统：design-system/echochat/MASTER.md
+  功能：全局消息搜索，结果按会话分组，点击跳转到聊天页
+-->
+<template>
+  <view class="page-wrapper">
+    <!-- 搜索栏 -->
+    <view class="search-bar">
+      <view class="search-input-wrap">
+        <text class="search-icon">&#128269;</text>
+        <input
+          class="search-input"
+          v-model="keyword"
+          placeholder="搜索聊天记录"
+          placeholder-style="color: #94A3B8"
+          confirm-type="search"
+          focus
+          @confirm="onSearch"
+        />
+      </view>
+      <text class="search-cancel" @tap="goBack">取消</text>
+    </view>
+
+    <!-- 搜索结果 -->
+    <scroll-view scroll-y class="result-list">
+      <!-- 空状态 -->
+      <view v-if="searched && results.length === 0" class="empty-state">
+        <text class="empty-text">未找到相关消息</text>
+      </view>
+
+      <!-- 结果列表 -->
+      <view
+        v-for="item in results"
+        :key="item.id"
+        class="result-item"
+        @tap="openChat(item)"
+      >
+        <view class="result-avatar-wrap">
+          <image v-if="item.sender_avatar" class="result-avatar" :src="item.sender_avatar" mode="aspectFill" />
+          <view v-else class="result-avatar result-avatar-placeholder">
+            <text class="avatar-text">{{ (item.sender_nickname || '?')[0] }}</text>
+          </view>
+        </view>
+        <view class="result-info">
+          <text class="result-name">{{ item.sender_nickname || '未知用户' }}</text>
+          <text class="result-content">{{ item.content }}</text>
+          <text class="result-time">{{ item.created_at }}</text>
+        </view>
+      </view>
+    </scroll-view>
+  </view>
+</template>
+
+<script>
+import { ref } from 'vue'
+import imApi from '@/api/im'
+
+export default {
+  name: 'ChatSearch',
+  setup() {
+    const keyword = ref('')
+    const results = ref([])
+    const searched = ref(false)
+
+    const onSearch = async () => {
+      const kw = keyword.value.trim()
+      if (!kw) return
+
+      searched.value = true
+      try {
+        const res = await imApi.searchMessages(kw)
+        results.value = (res.data && res.data.list) || []
+      } catch {
+        results.value = []
+      }
+    }
+
+    const openChat = (item) => {
+      uni.navigateTo({
+        url: `/pages/chat/conversation?conversationId=${item.conversation_id}&peerId=${item.sender_id}&peerName=${encodeURIComponent(item.sender_nickname || '')}&peerAvatar=${encodeURIComponent(item.sender_avatar || '')}`
+      })
+    }
+
+    const goBack = () => {
+      uni.navigateBack()
+    }
+
+    return {
+      keyword,
+      results,
+      searched,
+      onSearch,
+      openChat,
+      goBack
+    }
+  }
+}
+</script>
+
+<style scoped>
+.page-wrapper {
+  min-height: 100vh;
+  background-color: #F8FAFC;
+}
+
+.search-bar {
+  display: flex;
+  align-items: center;
+  padding: 16rpx 24rpx;
+  background-color: #FFFFFF;
+  border-bottom: 1rpx solid #E2E8F0;
+}
+
+.search-input-wrap {
+  flex: 1;
+  display: flex;
+  align-items: center;
+  background-color: #F1F5F9;
+  border-radius: 36rpx;
+  padding: 0 24rpx;
+  height: 68rpx;
+}
+
+.search-icon {
+  font-size: 28rpx;
+  margin-right: 12rpx;
+  color: #94A3B8;
+}
+
+.search-input {
+  flex: 1;
+  font-size: 28rpx;
+  color: #1E293B;
+}
+
+.search-cancel {
+  margin-left: 20rpx;
+  font-size: 28rpx;
+  color: #2563EB;
+}
+
+.result-list {
+  height: calc(100vh - 100rpx);
+}
+
+.result-item {
+  display: flex;
+  align-items: center;
+  padding: 24rpx 32rpx;
+  background-color: #FFFFFF;
+  border-bottom: 1rpx solid #F1F5F9;
+}
+
+.result-avatar-wrap {
+  flex-shrink: 0;
+  margin-right: 20rpx;
+}
+
+.result-avatar {
+  width: 80rpx;
+  height: 80rpx;
+  border-radius: 20rpx;
+}
+
+.result-avatar-placeholder {
+  background-color: #2563EB;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.avatar-text {
+  color: #FFFFFF;
+  font-size: 28rpx;
+  font-weight: 600;
+}
+
+.result-info {
+  flex: 1;
+  overflow: hidden;
+}
+
+.result-name {
+  font-size: 28rpx;
+  font-weight: 500;
+  color: #1E293B;
+  margin-bottom: 4rpx;
+}
+
+.result-content {
+  font-size: 26rpx;
+  color: #64748B;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  margin-bottom: 4rpx;
+}
+
+.result-time {
+  font-size: 22rpx;
+  color: #94A3B8;
+}
+
+.empty-state {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding-top: 200rpx;
+}
+
+.empty-text {
+  font-size: 28rpx;
+  color: #94A3B8;
+}
+</style>
diff --git a/frontend/src/pages/chat/settings.vue b/frontend/src/pages/chat/settings.vue
new file mode 100644
index 0000000..f053f99
--- /dev/null
+++ b/frontend/src/pages/chat/settings.vue
@@ -0,0 +1,186 @@
+<!--
+  聊天设置页
+
+  设计系统：design-system/echochat/MASTER.md
+  功能：对方信息展示、置顶、清空聊天记录、删除会话
+-->
+<template>
+  <view class="page-wrapper">
+    <!-- 对方信息 -->
+    <view class="user-card">
+      <view class="user-avatar-wrap">
+        <image v-if="peerAvatar" class="user-avatar" :src="peerAvatar" mode="aspectFill" />
+        <view v-else class="user-avatar user-avatar-placeholder">
+          <text class="avatar-text">{{ (peerName || '?')[0] }}</text>
+        </view>
+      </view>
+      <text class="user-name">{{ peerName || '未知用户' }}</text>
+    </view>
+
+    <!-- 操作项 -->
+    <view class="settings-group">
+      <view class="settings-item" @tap="togglePin">
+        <text class="settings-label">{{ isPinned ? '取消置顶' : '置顶聊天' }}</text>
+        <text class="settings-value">{{ isPinned ? '已置顶' : '' }}</text>
+      </view>
+    </view>
+
+    <view class="settings-group">
+      <view class="settings-item settings-danger" @tap="onClearHistory">
+        <text class="settings-label-danger">清空聊天记录</text>
+      </view>
+      <view class="settings-item settings-danger" @tap="onDeleteConversation">
+        <text class="settings-label-danger">删除会话</text>
+      </view>
+    </view>
+  </view>
+</template>
+
+<script>
+import { onLoad } from '@dcloudio/uni-app'
+import { ref } from 'vue'
+import { useChatStore } from '@/store/chat'
+
+export default {
+  name: 'ChatSettings',
+  setup() {
+    const chatStore = useChatStore()
+    const conversationId = ref(0)
+    const peerId = ref(0)
+    const peerName = ref('')
+    const peerAvatar = ref('')
+    const isPinned = ref(false)
+
+    onLoad((query) => {
+      conversationId.value = parseInt(query.conversationId) || 0
+      peerId.value = parseInt(query.peerId) || 0
+      peerName.value = decodeURIComponent(query.peerName || '')
+      peerAvatar.value = decodeURIComponent(query.peerAvatar || '')
+
+      const conv = chatStore.conversationList.find(c => c.id === conversationId.value)
+      if (conv) {
+        isPinned.value = conv.is_pinned
+      }
+    })
+
+    const togglePin = async () => {
+      const newVal = !isPinned.value
+      await chatStore.pinConversation(conversationId.value, newVal)
+      isPinned.value = newVal
+      uni.showToast({ title: newVal ? '已置顶' : '已取消置顶', icon: 'none' })
+    }
+
+    const onClearHistory = () => {
+      uni.showModal({
+        title: '提示',
+        content: '确定清空聊天记录？此操作不可恢复',
+        success: async (res) => {
+          if (res.confirm) {
+            await chatStore.clearHistory(conversationId.value)
+            uni.showToast({ title: '已清空', icon: 'none' })
+          }
+        }
+      })
+    }
+
+    const onDeleteConversation = () => {
+      uni.showModal({
+        title: '提示',
+        content: '确定删除该会话？',
+        success: async (res) => {
+          if (res.confirm) {
+            await chatStore.deleteConversation(conversationId.value)
+            uni.navigateBack({ delta: 2 })
+          }
+        }
+      })
+    }
+
+    return {
+      peerName,
+      peerAvatar,
+      isPinned,
+      togglePin,
+      onClearHistory,
+      onDeleteConversation
+    }
+  }
+}
+</script>
+
+<style scoped>
+.page-wrapper {
+  min-height: 100vh;
+  background-color: #F1F5F9;
+}
+
+.user-card {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  padding: 48rpx 32rpx;
+  background-color: #FFFFFF;
+  margin-bottom: 16rpx;
+}
+
+.user-avatar-wrap {
+  margin-bottom: 20rpx;
+}
+
+.user-avatar {
+  width: 120rpx;
+  height: 120rpx;
+  border-radius: 30rpx;
+}
+
+.user-avatar-placeholder {
+  background-color: #2563EB;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.avatar-text {
+  color: #FFFFFF;
+  font-size: 48rpx;
+  font-weight: 600;
+}
+
+.user-name {
+  font-size: 34rpx;
+  font-weight: 600;
+  color: #1E293B;
+}
+
+.settings-group {
+  background-color: #FFFFFF;
+  margin-bottom: 16rpx;
+}
+
+.settings-item {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 32rpx;
+  border-bottom: 1rpx solid #F1F5F9;
+}
+
+.settings-item:last-child {
+  border-bottom: none;
+}
+
+.settings-label {
+  font-size: 30rpx;
+  color: #1E293B;
+}
+
+.settings-value {
+  font-size: 26rpx;
+  color: #94A3B8;
+}
+
+.settings-label-danger {
+  font-size: 30rpx;
+  color: #EF4444;
+}
+</style>
diff --git a/frontend/src/pages/contact/detail.vue b/frontend/src/pages/contact/detail.vue
index e4619a0..d652596 100644
--- a/frontend/src/pages/contact/detail.vue
+++ b/frontend/src/pages/contact/detail.vue
@@ -136,7 +136,11 @@ const selectGroup = () => {
 }
 
 const sendMessage = () => {
-  uni.showToast({ title: '聊天功能开发中', icon: 'none' })
+  const f = friend.value
+  if (!f) return
+  uni.navigateTo({
+    url: `/pages/chat/conversation?conversationId=0&peerId=${f.user_id}&peerName=${encodeURIComponent(f.remark || f.nickname || f.username)}&peerAvatar=${encodeURIComponent(f.avatar || '')}`
+  })
 }
 
 const handleBlock = () => {