feat(nodes): add Dev channel option to node panel updates

The node update confirm dialog now offers a 'Dev channel (latest commit)' choice. The dev flag threads master -> nodes/updatePanel -> UpdatePanels -> remote.UpdatePanel -> the node's updatePanel endpoint, which calls StartUpdateChannel(dev) to install the rolling dev-latest build. With no dev flag the node keeps following its own channel setting.

internal/web/controller/node.go

@@ -318,6 +318,7 @@ func (a *NodeController) probe(c *gin.Context) {
 func (a *NodeController) updatePanel(c *gin.Context) {
 	var req struct {
 		Ids []int `json:"ids"`
+		Dev bool  `json:"dev"`
 	}
 	if err := c.ShouldBindJSON(&req); err != nil {
 		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
@@ -327,7 +328,7 @@ func (a *NodeController) updatePanel(c *gin.Context) {
 		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), fmt.Errorf("no nodes selected"))
 		return
 	}
-	results, err := a.nodeService.UpdatePanels(req.Ids)
+	results, err := a.nodeService.UpdatePanels(req.Ids, req.Dev)
 	jsonMsgObj(c, I18nWeb(c, "pages.nodes.toasts.updateStarted"), results, err)
 }
 

internal/web/controller/server.go

@@ -206,9 +206,22 @@ func (a *ServerController) installXray(c *gin.Context) {
 	jsonMsg(c, I18nWeb(c, "pages.index.xraySwitchVersionPopover"), err)
 }
 
-// updatePanel starts a panel self-update to the latest release.
+// updatePanel starts a panel self-update. With no "dev" form value it follows
+// this panel's own channel setting; an explicit "dev" (sent by the master node
+// updater) overrides it for this run.
 func (a *ServerController) updatePanel(c *gin.Context) {
-	err := a.panelService.StartUpdate()
+	devParam := c.PostForm("dev")
+	var err error
+	if devParam == "" {
+		err = a.panelService.StartUpdate()
+	} else {
+		dev, perr := strconv.ParseBool(devParam)
+		if perr != nil {
+			jsonMsg(c, "invalid data", perr)
+			return
+		}
+		err = a.panelService.StartUpdateChannel(dev)
+	}
 	jsonMsg(c, I18nWeb(c, "pages.index.panelUpdateStartedPopover"), err)
 }
 

internal/web/runtime/remote.go

@@ -538,9 +538,14 @@ func (r *Remote) RestartXray(ctx context.Context) error {
 
 // UpdatePanel asks the node to run its own official self-updater (update.sh)
 // and restart onto the latest release. The node returns as soon as the job is
-// launched; the new version surfaces on the next heartbeat.
-func (r *Remote) UpdatePanel(ctx context.Context) error {
-	_, err := r.do(ctx, http.MethodPost, "panel/api/server/updatePanel", nil)
+// launched; the new version surfaces on the next heartbeat. When dev is true the
+// node is moved to the rolling dev channel instead of the latest stable release.
+func (r *Remote) UpdatePanel(ctx context.Context, dev bool) error {
+	var body any
+	if dev {
+		body = url.Values{"dev": {"true"}}
+	}
+	_, err := r.do(ctx, http.MethodPost, "panel/api/server/updatePanel", body)
 	return err
 }
 

internal/web/service/node.go

@@ -637,7 +637,7 @@ type NodeUpdateResult struct {
 // UpdatePanels triggers the official self-updater on each given node. Only
 // enabled, online nodes are eligible — an offline node can't be reached, so it
 // is reported as skipped rather than silently dropped.
-func (s *NodeService) UpdatePanels(ids []int) ([]NodeUpdateResult, error) {
+func (s *NodeService) UpdatePanels(ids []int, dev bool) ([]NodeUpdateResult, error) {
 	mgr := runtime.GetManager()
 	if mgr == nil {
 		return nil, fmt.Errorf("runtime manager unavailable")
@@ -662,7 +662,7 @@ func (s *NodeService) UpdatePanels(ids []int) ([]NodeUpdateResult, error) {
 				break
 			}
 			ctx, cancel := context.WithTimeout(context.Background(), 20*time.Second)
-			updErr := remote.UpdatePanel(ctx)
+			updErr := remote.UpdatePanel(ctx, dev)
 			cancel()
 			if updErr != nil {
 				res.Error = updErr.Error()

internal/web/service/panel/panel.go

@@ -122,8 +122,19 @@ func getDevUpdateInfo() (*PanelUpdateInfo, error) {
 	}, nil
 }
 
-// StartUpdate starts the official updater outside of the current web request.
+// StartUpdate starts the official updater using this panel's own channel setting.
 func (s *PanelService) StartUpdate() error {
+	return s.startUpdate(devChannelActive())
+}
+
+// StartUpdateChannel runs the updater against an explicitly chosen channel,
+// overriding the local dev-channel setting. Used by the master node updater so
+// a node can be moved to the dev channel from the central panel.
+func (s *PanelService) StartUpdateChannel(dev bool) error {
+	return s.startUpdate(dev)
+}
+
+func (s *PanelService) startUpdate(useDev bool) error {
 	if runtime.GOOS != "linux" {
 		return fmt.Errorf("panel web update is supported only on Linux installations")
 	}
@@ -140,7 +151,7 @@ func (s *PanelService) StartUpdate() error {
 
 	mainFolder, serviceFolder := resolveUpdateFolders()
 	updateTag := ""
-	if devChannelActive() {
+	if useDev {
 		updateTag = devReleaseTag
 	}
 	updateScript := fmt.Sprintf("set -e; trap 'rm -f %s' EXIT; %s %s", shellQuote(scriptPath), shellQuote(bash), shellQuote(scriptPath))

internal/web/translation/ar-EG.json

@@ -979,6 +979,7 @@
       "upToDate": "محدّث",
       "updateConfirmTitle": "تحديث {count} عقدة إلى أحدث إصدار؟",
       "updateConfirmContent": "كل عقدة محددة ستنزّل أحدث إصدار وتعيد التشغيل عليه. يتم تحديث العقد المفعّلة والمتصلة فقط.",
+      "updateDevChannel": "التحديث إلى قناة التطوير (أحدث كومِت)",
       "testConnection": "اختبار الاتصال",
       "connectionOk": "الاتصال شغال ({ms} ms)",
       "connectionFailed": "فشل الاتصال",

internal/web/translation/en-US.json

@@ -1098,6 +1098,7 @@
       "upToDate": "Up to date",
       "updateConfirmTitle": "Update {count} node(s) to the latest version?",
       "updateConfirmContent": "Each selected node downloads the latest release and restarts onto it. Only enabled, online nodes are updated.",
+      "updateDevChannel": "Update to Dev channel (latest commit)",
       "testConnection": "Test Connection",
       "connectionOk": "Connection OK ({ms} ms)",
       "connectionFailed": "Connection failed",

internal/web/translation/es-ES.json

@@ -979,6 +979,7 @@
       "upToDate": "Actualizado",
       "updateConfirmTitle": "¿Actualizar {count} nodo(s) a la última versión?",
       "updateConfirmContent": "Cada nodo seleccionado descarga la última versión y se reinicia con ella. Solo se actualizan los nodos habilitados y en línea.",
+      "updateDevChannel": "Actualizar al canal de desarrollo (último commit)",
       "testConnection": "Probar conexión",
       "connectionOk": "Conexión correcta ({ms} ms)",
       "connectionFailed": "Conexión fallida",

internal/web/translation/fa-IR.json

@@ -979,6 +979,7 @@
       "upToDate": "به‌روز",
       "updateConfirmTitle": "{count} نود به آخرین نسخه به‌روزرسانی شوند؟",
       "updateConfirmContent": "هر نود انتخاب‌شده آخرین نسخه را دانلود و روی آن ری‌استارت می‌شود. فقط نودهای فعال و آنلاین به‌روزرسانی می‌شوند.",
+      "updateDevChannel": "به‌روزرسانی به کانال دِو (آخرین کامیت)",
       "testConnection": "تست اتصال",
       "connectionOk": "اتصال موفق ({ms} میلی‌ثانیه)",
       "connectionFailed": "اتصال ناموفق",

internal/web/translation/id-ID.json

@@ -979,6 +979,7 @@
       "upToDate": "Terbaru",
       "updateConfirmTitle": "Perbarui {count} node ke versi terbaru?",
       "updateConfirmContent": "Setiap node terpilih mengunduh rilis terbaru dan memulai ulang. Hanya node aktif dan online yang diperbarui.",
+      "updateDevChannel": "Perbarui ke kanal dev (commit terbaru)",
       "testConnection": "Tes Koneksi",
       "connectionOk": "Koneksi OK ({ms} ms)",
       "connectionFailed": "Koneksi gagal",

internal/web/translation/ja-JP.json

@@ -979,6 +979,7 @@
       "upToDate": "最新",
       "updateConfirmTitle": "{count} 個のノードを最新バージョンに更新しますか？",
       "updateConfirmContent": "選択した各ノードは最新リリースをダウンロードして再起動します。有効かつオンラインのノードのみが更新されます。",
+      "updateDevChannel": "開発チャンネルに更新（最新コミット）",
       "testConnection": "接続テスト",
       "connectionOk": "接続OK ({ms} ms)",
       "connectionFailed": "接続に失敗しました",

internal/web/translation/pt-BR.json

@@ -979,6 +979,7 @@
       "upToDate": "Atualizado",
       "updateConfirmTitle": "Atualizar {count} nó(s) para a versão mais recente?",
       "updateConfirmContent": "Cada nó selecionado baixa a versão mais recente e reinicia nela. Apenas nós ativos e online são atualizados.",
+      "updateDevChannel": "Atualizar para o canal de desenvolvimento (último commit)",
       "testConnection": "Testar conexão",
       "connectionOk": "Conexão OK ({ms} ms)",
       "connectionFailed": "Falha na conexão",

internal/web/translation/ru-RU.json

@@ -979,6 +979,7 @@
       "upToDate": "Актуально",
       "updateConfirmTitle": "Обновить {count} узлов до последней версии?",
       "updateConfirmContent": "Каждый выбранный узел загрузит последний релиз и перезапустится. Обновляются только включённые узлы в сети.",
+      "updateDevChannel": "Обновить до канала разработки (последний коммит)",
       "testConnection": "Проверить соединение",
       "connectionOk": "Соединение в порядке ({ms} мс)",
       "connectionFailed": "Не удалось подключиться",

internal/web/translation/tr-TR.json

@@ -979,6 +979,7 @@
       "upToDate": "Güncel",
       "updateConfirmTitle": "{count} düğüm en son sürüme güncellensin mi?",
       "updateConfirmContent": "Seçilen her düğüm en son sürümü indirir ve yeniden başlatılır. Yalnızca etkin ve çevrimiçi düğümler güncellenir.",
+      "updateDevChannel": "Dev kanalına güncelle (son commit)",
       "testConnection": "Bağlantıyı Test Et",
       "connectionOk": "Bağlantı tamam ({ms} ms)",
       "connectionFailed": "Bağlantı başarısız",

internal/web/translation/uk-UA.json

@@ -979,6 +979,7 @@
       "upToDate": "Актуально",
       "updateConfirmTitle": "Оновити {count} вузлів до останньої версії?",
       "updateConfirmContent": "Кожен вибраний вузол завантажить останній реліз і перезапуститься. Оновлюються лише увімкнені вузли в мережі.",
+      "updateDevChannel": "Оновити до каналу розробки (останній коміт)",
       "testConnection": "Перевірити з'єднання",
       "connectionOk": "З'єднання в порядку ({ms} мс)",
       "connectionFailed": "Помилка з'єднання",

internal/web/translation/vi-VN.json

@@ -979,6 +979,7 @@
       "upToDate": "Mới nhất",
       "updateConfirmTitle": "Cập nhật {count} node lên phiên bản mới nhất?",
       "updateConfirmContent": "Mỗi node đã chọn sẽ tải bản phát hành mới nhất và khởi động lại. Chỉ các node đang bật và trực tuyến được cập nhật.",
+      "updateDevChannel": "Cập nhật lên kênh phát triển (commit mới nhất)",
       "testConnection": "Kiểm tra kết nối",
       "connectionOk": "Kết nối OK ({ms} ms)",
       "connectionFailed": "Kết nối thất bại",

internal/web/translation/zh-CN.json

@@ -979,6 +979,7 @@
       "upToDate": "已是最新",
       "updateConfirmTitle": "将 {count} 个节点更新到最新版本？",
       "updateConfirmContent": "每个所选节点会下载最新版本并重启。仅更新已启用且在线的节点。",
+      "updateDevChannel": "更新到开发通道（最新提交）",
       "testConnection": "测试连接",
       "connectionOk": "连接正常 ({ms} ms)",
       "connectionFailed": "连接失败",

internal/web/translation/zh-TW.json

@@ -979,6 +979,7 @@
       "upToDate": "已是最新",
       "updateConfirmTitle": "將 {count} 個節點更新到最新版本？",
       "updateConfirmContent": "每個所選節點會下載最新版本並重新啟動。僅更新已啟用且在線的節點。",
+      "updateDevChannel": "更新到開發通道（最新提交）",
       "testConnection": "測試連線",
       "connectionOk": "連線正常 ({ms} ms)",
       "connectionFailed": "連線失敗",