fix: 确保在站列车（包括终点站列车）始终显示在预测列表中

- 当 State.currentTrain 存在时，手动将其信息插入 upcomingTrains 列表头部
- 解决终点站列车被 CRN 导航系统从 TrainStops 提前移除导致预测区无显示的问题
- 使用 normalizeUpcomingKey 去重，避免重复条目
- 版本号 v1.0.68 -> v1.0.69

station_broadcast.lua

@@ -1,6 +1,6 @@
 
 -- 1. Configuration & Constants
-local APP_VERSION_TEXT = "v1.0.68"
+local APP_VERSION_TEXT = "v1.0.69"
 
 local CONFIG = {
     CLOUD_URL = "ws://stabadmin.fse-media.group",
@@ -3480,6 +3480,34 @@ function Main.loop()
                 State.currentTrain = nil
             end
         end
+
+        if State.currentTrain then
+            local ctKey = normalizeUpcomingKey(State.currentTrain.id, State.currentTrain.dest)
+            local alreadyInUpcoming = false
+            for _, ut in ipairs(State.upcomingTrains) do
+                local utKey = normalizeUpcomingKey(ut.trainName, ut.dest)
+                if utKey == ctKey then
+                    alreadyInUpcoming = true
+                    break
+                end
+            end
+            if not alreadyInUpcoming then
+                local nowSec = os.epoch("utc") / 1000
+                local remaining = State.currentTrain.departureTime and math.max(0, State.currentTrain.departureTime - nowSec) or 0
+                table.insert(State.upcomingTrains, 1, {
+                    trainName = State.currentTrain.id,
+                    dest = State.currentTrain.dest,
+                    platform = State.currentTrain.platform or State.stationPlatform or "1",
+                    eta = 0,
+                    etaLabel = buildEtaLabel(0, nil),
+                    delay = 0,
+                    cancelled = false,
+                    reason = nil,
+                    _atStation = true,
+                    _departingIn = remaining
+                })
+            end
+        end
         
         Display.render()
         Display.renderTerminal()