feat: promote tasks as batch execution domain

internal/web/ui/templates/task.html

@@ -6,7 +6,7 @@
 </div>
 
 <div class="card">
-  <h2>任务详情</h2>
+  <h2>任务概览</h2>
   <div class="summary-strip control-summary" style="margin-top:10px">
     <div class="summary-chip">
       <div class="summary-chip-label">任务标识</div>
@@ -33,7 +33,7 @@
 </div>
 
 <div class="card">
-  <h2>设备结果表</h2>
+  <h2>设备结果</h2>
   <div class="table-wrap" style="margin-top:10px">
     <table>
       <thead>
@@ -67,7 +67,7 @@
 </div>
 
 <div class="card">
-  <h2>实时进度</h2>
+  <h2>执行进度</h2>
   <div class="muted small">任务执行过程中会持续推送每台设备的状态变化。</div>
   <div class="actions compact" style="margin-top:8px">
     <button type="button" onclick="startSSE()">连接</button>

internal/web/ui_test.go

@@ -2171,3 +2171,18 @@ func TestUI_DeviceWorkspaceContainsSingleDeviceOperations(t *testing.T) {
 		}
 	}
 }
+
+func TestUI_TaskDetailPresentsExecutionSections(t *testing.T) {
+	ui := newTestUI(t)
+	task, err := ui.tasks.CreateTask("config_apply", []string{"edge-01"}, map[string]any{"config": map[string]any{}})
+	if err != nil {
+		t.Fatalf("create task: %v", err)
+	}
+
+	html := renderPage(t, ui, "/ui/tasks/"+task.ID)
+	for _, text := range []string{"任务概览", "执行进度", "设备结果"} {
+		if !strings.Contains(html, text) {
+			t.Fatalf("expected task detail section %q in html: %s", text, html)
+		}
+	}
+}