feat: conversation selector selects tapped item and highlights it (per-row no-arg methods)

src/pages/index/index.ux

@@ -3,17 +3,38 @@
     <swiper class="swiper" index="{{currentIndex}}" indicator="false" loop="false"
             previousmargin="0px" nextmargin="0px" onchange="onSwipeChange">
 
-      <!-- 最左页：选择对话 / 工作区 -->
+      <!-- 最左页：选择对话 / 工作区（每条会话独立选择，选中高亮） -->
       <div class="page-item left-page">
         <text class="page-title">选择对话</text>
         <input class="new-session" type="button" value="＋ 新会话" onclick="newSession" />
         <text class="page-title small">工作区</text>
-        <div class="ws-group" for="{{workTree}}">
-          <text class="ws-name">📁 {{$item.name}}</text>
-          <div class="sel-conv {{$item.title === currentConv ? 'sel-active' : ''}}" for="{{$item.convs}}">
-            <text class="sel-title fl{{fontLevel}}" onclick="cycleConv">{{$item.title}}</text>
-            <text class="sel-time" onclick="cycleConv">{{$item.time}}</text>
-          </div>
+        <text class="ws-name">📁 DeepSeek_Harness_Watch</text>
+        <div class="sel-conv {{currentConv === '小米手环10 Pro远程控制' ? 'sel-active' : ''}}">
+          <text class="sel-title fl{{fontLevel}}" onclick="pickConv0">小米手环10 Pro远程控制</text>
+          <text class="sel-time">刚刚</text>
+        </div>
+        <div class="sel-conv {{currentConv === 'DSHWatch 验收' ? 'sel-active' : ''}}">
+          <text class="sel-title fl{{fontLevel}}" onclick="pickConv1">DSHWatch 验收</text>
+          <text class="sel-time">1小时</text>
+        </div>
+        <text class="ws-name">📁 reactor</text>
+        <div class="sel-conv {{currentConv === '排查Git文件乱码问题' ? 'sel-active' : ''}}">
+          <text class="sel-title fl{{fontLevel}}" onclick="pickConv2">排查Git文件乱码问题</text>
+          <text class="sel-time">15天</text>
+        </div>
+        <text class="ws-name">📁 project</text>
+        <div class="sel-conv {{currentConv === '修改API配置为固定密钥' ? 'sel-active' : ''}}">
+          <text class="sel-title fl{{fontLevel}}" onclick="pickConv3">修改API配置为固定密钥</text>
+          <text class="sel-time">8天</text>
+        </div>
+        <div class="sel-conv {{currentConv === '检测DeepSeek API可用性' ? 'sel-active' : ''}}">
+          <text class="sel-title fl{{fontLevel}}" onclick="pickConv4">检测DeepSeek API可用性</text>
+          <text class="sel-time">9天</text>
+        </div>
+        <text class="ws-name">📁 truestudio.online</text>
+        <div class="sel-conv {{currentConv === '评估一下项目状态' ? 'sel-active' : ''}}">
+          <text class="sel-title fl{{fontLevel}}" onclick="pickConv5">评估一下项目状态</text>
+          <text class="sel-time">9天</text>
         </div>
       </div>
 
@@ -362,14 +383,12 @@ export default {
     this.showOptionPicker = true
   },
 
-  cycleConv() {
-    const titles = []
-    for (const ws of this.workTree) {
-      for (const c of ws.convs) titles.push(c.title)
-    }
-    const idx = titles.indexOf(this.currentConv)
-    this.currentConv = titles[(idx + 1) % titles.length]
-  },
+  pickConv0() { this.currentConv = '小米手环10 Pro远程控制'; this.currentIndex = 1 },
+  pickConv1() { this.currentConv = 'DSHWatch 验收'; this.currentIndex = 1 },
+  pickConv2() { this.currentConv = '排查Git文件乱码问题'; this.currentIndex = 1 },
+  pickConv3() { this.currentConv = '修改API配置为固定密钥'; this.currentIndex = 1 },
+  pickConv4() { this.currentConv = '检测DeepSeek API可用性'; this.currentIndex = 1 },
+  pickConv5() { this.currentConv = '评估一下项目状态'; this.currentIndex = 1 },
 
   toggleThink(index) {
     const m = this.messages[index]