feat(inbounds): add multi-select and bulk delete

Mirror the clients page: checkbox selection on the desktop table and on
mobile cards, with a danger Delete button in the toolbar that removes all
selected inbounds in one call.

Backend adds POST /panel/api/inbounds/bulkDel, which loops the existing
DelInbound per id (xray restarts at most once) and returns {deleted,
skipped}. Frontend shows a confirm modal plus a result toast, clears the
selection on success, adds bulk-delete i18n keys across all 13 languages,
and documents the endpoint in the in-panel API docs.

web/controller/inbound.go

@@ -69,6 +69,7 @@ func (a *InboundController) initRouter(g *gin.RouterGroup) {
 
 	g.POST("/add", a.addInbound)
 	g.POST("/del/:id", a.delInbound)
+	g.POST("/bulkDel", a.bulkDelInbounds)
 	g.POST("/update/:id", a.updateInbound)
 	g.POST("/setEnable/:id", a.setInboundEnable)
 	g.POST("/:id/resetTraffic", a.resetInboundTraffic)
@@ -179,6 +180,32 @@ func (a *InboundController) delInbound(c *gin.Context) {
 	notifyClientsChanged()
 }
 
+type bulkDelInboundsRequest struct {
+	Ids []int `json:"ids"`
+}
+
+// bulkDelInbounds deletes several inbounds in one call. Failures are
+// reported per id and the rest still proceed; xray restarts at most once.
+func (a *InboundController) bulkDelInbounds(c *gin.Context) {
+	var req bulkDelInboundsRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
+		return
+	}
+	result, needRestart, err := a.inboundService.DelInbounds(req.Ids)
+	if err != nil {
+		jsonMsg(c, I18nWeb(c, "somethingWentWrong"), err)
+		return
+	}
+	jsonObj(c, result, nil)
+	if needRestart {
+		a.xrayService.SetToNeedRestart()
+	}
+	user := session.GetLoginUser(c)
+	a.broadcastInboundsUpdate(user.Id)
+	notifyClientsChanged()
+}
+
 // updateInbound updates an existing inbound configuration.
 func (a *InboundController) updateInbound(c *gin.Context) {
 	id, err := strconv.Atoi(c.Param("id"))