feat: 优化过滤主题功能，支持下拉选择

app/src/renderer/src/views/Messages.vue

@@ -1,14 +1,14 @@
 <script setup>
 import { ref, computed } from 'vue';
 import { useMqttStore } from '../stores/mqtt.js';
-import { NCard, NSpace, NInput, NButton, NEmpty, useMessage } from 'naive-ui';
+import { NCard, NSelect, NButton, NEmpty, useMessage } from 'naive-ui';
 
 // 全局状态与消息 API
 const store = useMqttStore();
 const message = useMessage();
 
-// 主题过滤关键字
-const filter = ref('');
+// 已选中的过滤主题列表
+const filter = ref([]);
 
 /**
  * 复制主题到剪贴板
@@ -24,22 +24,65 @@ async function copyTopic(topic) {
 }
 
 /**
- * 根据过滤关键字筛选后的消息列表
+ * 可过滤的主题选项（来自已配置主题和已接收消息）
+ * @type {import('vue').ComputedRef<Array<{label: string, value: string}>>}
+ */
+const topicOptions = computed(() => {
+
+  let server = store.activeServer.value;
+  let serverTopics = server?.topics?.map((t) => t.topic) || [];
+  let messageTopics = store.messages.value.map((m) => m.topic);
+  let all = [...new Set([...serverTopics, ...messageTopics])];
+
+  all.sort((a, b) => a.localeCompare(b));
+
+  return all.map((topic) => ({ label: topic, value: topic }));
+
+});
+
+/**
+ * 判断消息主题是否匹配指定的过滤主题（支持 + 单层通配符与 # 多层通配符）
+ * @param {string} filterTopic - 过滤主题，可包含 + 或 #
+ * @param {string} messageTopic - 消息主题
+ * @returns {boolean} 是否匹配
+ */
+function topicMatchesFilter(filterTopic, messageTopic) {
+
+  if (filterTopic === '#') {
+    return true;
+  }
+
+  if (filterTopic.endsWith('/#')) {
+    let prefix = filterTopic.slice(0, -2);
+    return messageTopic === prefix || messageTopic.startsWith(prefix + '/');
+  }
+
+  let filterParts = filterTopic.split('/');
+  let messageParts = messageTopic.split('/');
+
+  if (filterParts.length !== messageParts.length) {
+    return false;
+  }
+
+  return filterParts.every((part, index) => part === '+' || part === messageParts[index]);
+
+}
+
+/**
+ * 根据选中主题筛选后的消息列表（支持 + / # 通配符）
  * @type {import('vue').ComputedRef<Array<Object>>}
  */
 const filteredMessages = computed(() => {
 
-  if (!filter.value.trim()) {
+  if (!filter.value || filter.value.length === 0) {
     return store.messages.value;
   }
 
-  let f = filter.value.trim().toLowerCase();
+  return store.messages.value.filter((m) =>
+    filter.value.some((f) => topicMatchesFilter(f, m.topic))
+  );
 
-  return store.messages.value.filter((m) => {
-    return  m.topic.toLowerCase().includes(f);
-  });
-
-})
+});
 
 /**
  * 清空当前活动服务器的消息列表
@@ -79,10 +122,8 @@ function formatPayload(payload) {
       }"
     >
       <template #header>
-        <n-space
-          align="center"
-          justify="space-between"
-          style="width: 100%"
+        <div
+          style="display: flex; flex-direction: column; gap: 8px; width: 100%"
         >
           <div>
             <span>消息监控</span>
@@ -90,20 +131,26 @@ function formatPayload(payload) {
               style="font-size: 12px; opacity: 0.55; margin-left: 8px"
             >实时查看接收和发送的 MQTT 消息</span>
           </div>
-          <n-space>
-            <n-input
+          <div
+            style="display: flex; align-items: center; gap: 8px; width: 100%"
+          >
+            <n-select
               v-model:value="filter"
               size="small"
               placeholder="过滤主题..."
-              style="width: 180px"
+              style="flex: 1 1 auto; max-width: 480px; min-width: 0"
+              multiple
+              filterable
               clearable
+              max-tag-count="responsive"
+              :options="topicOptions"
             />
             <n-button
               size="small"
               @click="handleClear"
             >清空消息</n-button>
-          </n-space>
-        </n-space>
+          </div>
+        </div>
       </template>
       <n-empty
         v-if="filteredMessages.length === 0"