fix: console only deploys changed devices; wizard shows display names and pre-checks features

internal/web/ui.go

@@ -1276,14 +1276,22 @@ func (u *UI) actionConsoleSave(w http.ResponseWriter, r *http.Request) {
         }
     }
 
-    // Step 2: build requests using form features (user intent) and
-    // existing recognition unit video sources.
+    // Step 2: build requests only for devices whose features actually changed.
     var requests []service.AutoConfigRequest
     for _, dev := range devices {
         if dev == nil || dev.DeviceID == "" {
             continue
         }
         features := formFeatures[dev.DeviceID]
+        if len(features) == 0 {
+            continue
+        }
+        // Skip if features haven't changed from what's already saved.
+        if saved, err := u.preview.GetDeviceFeatures(dev.DeviceID); err == nil {
+            if stringSlicesEqual(sortedCopy(features), sortedCopy(saved)) {
+                continue
+            }
+        }
         var sources []string
         if assignment, err := u.preview.GetDeviceAssignment(dev.DeviceID); err == nil && assignment != nil {
             for _, ref := range assignment.RecognitionUnits {
@@ -1451,15 +1459,56 @@ func (u *UI) apiWizardDeviceInfo(w http.ResponseWriter, r *http.Request) {
     }
 
     if u.agent != nil && dev.Online {
-        channels := queryAgentChannels(u.agent, dev)
+        // Channels: use management DB for friendly names and RTSP URLs
+        channels := queryDeviceChannelsFromDB(u.preview, deviceID)
         resp["channels"] = channels
 
         caps := queryAgentCapabilities(u.agent, dev)
         resp["capabilities"] = caps
+
+        // Include currently enabled features from management DB
+        if u.preview != nil {
+            if enabled, err := u.preview.GetDeviceFeatures(deviceID); err == nil {
+                resp["enabled_features"] = enabled
+            }
+        }
     }
     json.NewEncoder(w).Encode(resp)
 }
 
+func queryDeviceChannelsFromDB(preview *service.ConfigPreviewService, deviceID string) []map[string]string {
+    if preview == nil {
+        return nil
+    }
+    assignment, err := preview.GetDeviceAssignment(deviceID)
+    if err != nil || assignment == nil {
+        return nil
+    }
+    var channels []map[string]string
+    for _, ref := range assignment.RecognitionUnits {
+        unit, err := preview.GetRecognitionUnit(ref)
+        if err != nil || unit == nil {
+            continue
+        }
+        ch := map[string]string{
+            "name": unit.Name,
+        }
+        if unit.DisplayName != "" {
+            ch["display"] = unit.DisplayName
+        } else {
+            ch["display"] = unit.Name
+        }
+        if unit.VideoSourceRef != "" {
+            src, err := preview.GetVideoSource(unit.VideoSourceRef)
+            if err == nil && src != nil && src.Config.URL != "" {
+                ch["rtsp_url"] = src.Config.URL
+            }
+        }
+        channels = append(channels, ch)
+    }
+    return channels
+}
+
 func queryAgentChannels(agent *service.AgentClient, dev *models.Device) []map[string]string {
     body, code, err := agent.Do("GET", dev.IP, dev.AgentPort, "/v1/preview/channels", nil)
     if err != nil || code != 200 {
@@ -4488,6 +4537,28 @@ func cleanFormList(values []string) []string {
     return out
 }
 
+func sortedCopy(s []string) []string {
+    if s == nil {
+        return nil
+    }
+    c := make([]string, len(s))
+    copy(c, s)
+    sort.Strings(c)
+    return c
+}
+
+func stringSlicesEqual(a, b []string) bool {
+    if len(a) != len(b) {
+        return false
+    }
+    for i := range a {
+        if a[i] != b[i] {
+            return false
+        }
+    }
+    return true
+}
+
 func parseDeviceAssignmentBoardState(raw string) (map[string][]string, error) {
     raw = strings.TrimSpace(raw)
     if raw == "" {

internal/web/ui/templates/wizard.html

@@ -200,11 +200,14 @@
       .then(function(r){return r.json()})
       .then(function(info){
         var channels = info.channels || [];
-        step2Assigned = channels.map(function(ch){return {name: ch.name, url: ch.hls_url || ""}});
+        step2Assigned = channels.map(function(ch){return {name: ch.display || ch.name, url: ch.rtsp_url || ""}});
         renderAssignedSources();
 
         step2Features = [];
         var caps = (info.capabilities || []).filter(function(c){return c.available});
+        // Pre-check features already enabled on this device
+        var enabled = info.enabled_features || [];
+        caps.forEach(function(c){ if (enabled.indexOf(c.key) >= 0) step2Features.push(c.key); });
         document.getElementById("feature-placeholder").style.display = "none";
         renderFeatures(caps);
       })
@@ -360,8 +363,7 @@
       } else {
         resultDiv.innerHTML = '<div class="card" style="border-left:3px solid var(--green)"><div class="metric-label">'+
           '<span class="status-dot ok"></span><strong>部署成功</strong></div>'+
-          '<div class="muted small" style="margin-top:6px">模板：'+result.template_name+' | 检测通道：'+result.units_created+' 个</div>'+
-          '<a href="/alarms" class="btn primary" style="margin-top:8px;font-size:11px">查看告警</a></div>';
+          '<div class="muted small" style="margin-top:6px">模板：'+result.template_name+' | 检测通道：'+result.units_created+' 个</div></div>';
         btn.style.display = "none";
         currentStep = 3;
         document.querySelectorAll(".wizard-step").forEach(function(el){el.classList.add("done")});