feat: 告警列表显示设备名+IP和视频源，CSV时间移到首位

internal/web/ui.go

@@ -119,6 +119,9 @@ type PageData struct {
     SystemCompanyName        string
     AlarmFilterDevices       []string
     AlarmFilterRuleTypes     []string
+    AlarmDeviceNames         map[string]string
+    AlarmDeviceIPs           map[string]string
+    AlarmChannelSources      map[string]string
     SelectedAlarmDevice      string
     SelectedAlarmRuleType    string
     DeviceMetrics            []DeviceMetric
@@ -2573,6 +2576,27 @@ func (u *UI) pageAlarms(w http.ResponseWriter, r *http.Request) {
         data.AlarmFilterDevices = u.alarmCollector.GetDistinctDeviceIDs()
         data.AlarmFilterRuleTypes = u.alarmCollector.GetDistinctRuleTypes()
     }
+    // Build device name/IP maps and channel→source map for template
+    data.AlarmDeviceNames = map[string]string{}
+    data.AlarmDeviceIPs = map[string]string{}
+    data.AlarmChannelSources = map[string]string{}
+    for _, dev := range data.Devices {
+        if dev != nil {
+            data.AlarmDeviceNames[dev.DeviceID] = dev.DisplayName()
+            data.AlarmDeviceIPs[dev.DeviceID] = dev.IP
+        }
+    }
+    if u.preview != nil {
+        if assignments, err := u.preview.ListDeviceAssignments(); err == nil {
+            for _, a := range assignments {
+                for _, ref := range a.RecognitionUnits {
+                    if unit, err := u.preview.GetRecognitionUnit(ref); err == nil && unit != nil && unit.VideoSourceRef != "" {
+                        data.AlarmChannelSources[unit.Name] = unit.VideoSourceRef
+                    }
+                }
+            }
+        }
+    }
     // Calculate total pages and build page list: 1, ..., cur-2, cur-1, cur, cur+1, cur+2, ..., N
     if data.TotalAlarmCount > 0 {
         data.TotalAlarmPages = (data.TotalAlarmCount + perPage - 1) / perPage
@@ -2722,7 +2746,7 @@ func (u *UI) apiAlarmExport(w http.ResponseWriter, r *http.Request) {
     w.Header().Set("Content-Disposition", fmt.Sprintf(`attachment; filename="alarms_%s_%s.csv"`, from, to))
     w.Header().Set("Cache-Control", "no-cache")
     w.Write([]byte("\xef\xbb\xbf"))
-    w.Write([]byte("设备名,IP,视频源,规则,目标,状态,时间\n"))
+    w.Write([]byte("时间,设备名,IP,视频源,规则,目标,状态\n"))
     for _, a := range records {
         devName := a.DeviceID
         devIP := ""
@@ -2745,9 +2769,9 @@ func (u *UI) apiAlarmExport(w http.ResponseWriter, r *http.Request) {
             }
         }
         fmt.Fprintf(w, "%s,%s,%s,%s,%s,%s,%s\n",
-            escapeCSV(devName), escapeCSV(devIP), escapeCSV(sourceName),
+            escapeCSV(a.Timestamp), escapeCSV(devName), escapeCSV(devIP), escapeCSV(sourceName),
             escapeCSV(alarmRuleLabel(a.RuleName)), escapeCSV(a.ObjectLabel),
-            escapeCSV(alarmStatusLabel(a.Status)), escapeCSV(a.Timestamp))
+            escapeCSV(alarmStatusLabel(a.Status)))
     }
 }
 

internal/web/ui/templates/alarms.html

@@ -9,7 +9,7 @@
     <select name="device" onchange="this.form.submit()" style="font-size:11px;padding:2px 4px;width:130px;flex-shrink:0">
       <option value="">全部设备</option>
       {{range .AlarmFilterDevices}}
-      <option value="{{.}}" {{if eq . $.SelectedAlarmDevice}}selected{{end}}>{{shortID .}}</option>
+      <option value="{{.}}" {{if eq . $.SelectedAlarmDevice}}selected{{end}}>{{index $.AlarmDeviceNames .}}</option>
       {{end}}
     </select>
     {{end}}
@@ -59,9 +59,10 @@
         <tr id="alarm-{{.ID}}">
           <td class="mono small">{{.Timestamp}}</td>
           <td>
-            <a href="/devices/{{.DeviceID}}">{{shortID .DeviceID}}</a>
+            <a href="/devices/{{.DeviceID}}">{{index $.AlarmDeviceNames .DeviceID}}</a>
+            <div class="muted small mono">{{index $.AlarmDeviceIPs .DeviceID}}</div>
           </td>
-          <td>{{.Channel}}</td>
+          <td>{{index $.AlarmChannelSources .Channel}}</td>
           <td>
             <span class="pill warn">{{ruleLabel .RuleName}}</span>
           </td>