fix: 终点站到达时下一站广播播放异常 + getNextStation 不回绕起点

1. Utils.getNextStation: 移除终点站回绕到起点的逻辑（非环线）
   - 此前当前站是 END 时会从 schedule.entries 开头再找，把起点当下一站
   - 修复后在终点站返回 nil，明确表示无后续站

2. 服务端 handleTrainArrival: 智能区分普通站/终点站广播序列
   - 新增 hasNextStation / finalNextCode 判断：只有当下一站有效时
     才在 seq 中插入 ch-nextsta + ch- 片段
   - 终点站（finalNextCode 为 null）：直接删除 nextsta 和下一站代码，
     仅保留 站台-站台-线路-方向-终点站-警示 片段
   - 避免 ch-UNK 等无效资源或回绕起点站名被播放

3. 日志增强：arrival 处理时额外打印 nextStation 和 nextCode，
   便于快速确认服务端是否收到正确的下一站信息

版本号 v1.0.69 -> v1.0.70

CloudServer/server.js

@@ -2139,7 +2139,10 @@ function handleTrainArrival(ws, data) {
     
     const lineCode = data.lineCode || (stationCode ? stationCode.split('-')[0] : 'UNK');
     const destCode = data.destCode || getStationCodeFromName(data.destination) || 'UNK';
-    const nextCode = data.nextCode || getStationCodeFromName(data.nextStation) || 'UNK';
+    const nextStationRaw = data.nextStation ? String(data.nextStation).trim() : '';
+    const nextCodeRaw = data.nextCode ? String(data.nextCode).trim() : (nextStationRaw ? getStationCodeFromName(nextStationRaw) : '');
+    const hasNextStation = nextStationRaw && nextStationRaw !== '' && nextCodeRaw && nextCodeRaw !== 'UNK' && nextCodeRaw !== '';
+    const finalNextCode = hasNextStation ? nextCodeRaw : null;
 
     const existingIndex = activeTrains.findIndex(t => t.trainId === trainId);  
     const trainData = {
@@ -2155,7 +2158,7 @@ function handleTrainArrival(ws, data) {
         activeTrains.push(trainData);
     }
 
-    log('INFO', `Train ${trainId} arrived at ${stationName}. Broadcasting...`);
+    log('INFO', `Train ${trainId} arrived at ${stationName}. Broadcasting... nextStation=${nextStationRaw || '(none/terminal)'} nextCode=${finalNextCode || '(none)'}`);
     saveData();
     broadcastUpdate();
 
@@ -2173,11 +2176,18 @@ function handleTrainArrival(ws, data) {
     }));
 
     // Broadcast Audio Logic
-    const seq = [
-        'ksts',
-        `ja-${finalPlatform}`, 'ja-zt', `ja-${lineCode}`, `ja-${destCode}`, 'ja-to', 'ja-nextsta', `ja-${nextCode}`, 'ja-warn',
-        `ch-${finalPlatform}`, 'ch-zt', `ch-${lineCode}`, 'ch-to', `ch-${destCode}`, 'ch-nextsta', `ch-${nextCode}`, 'ch-warn'
-    ];
+    const seq = ['ksts'];
+    if (finalNextCode) {
+        seq.push(
+            `ja-${finalPlatform}`, 'ja-zt', `ja-${lineCode}`, `ja-${destCode}`, 'ja-to', 'ja-nextsta', `ja-${finalNextCode}`, 'ja-warn',
+            `ch-${finalPlatform}`, 'ch-zt', `ch-${lineCode}`, 'ch-to', `ch-${destCode}`, 'ch-nextsta', `ch-${finalNextCode}`, 'ch-warn'
+        );
+    } else {
+        seq.push(
+            `ja-${finalPlatform}`, 'ja-zt', `ja-${lineCode}`, `ja-${destCode}`, 'ja-warn',
+            `ch-${finalPlatform}`, 'ch-zt', `ch-${lineCode}`, 'ch-to', `ch-${destCode}`, 'ch-warn'
+        );
+    }
     
     enqueueHlsPush(stationName, seq);
     

station_broadcast.lua

@@ -1,6 +1,6 @@
 
 -- 1. Configuration & Constants
-local APP_VERSION_TEXT = "v1.0.69"
+local APP_VERSION_TEXT = "v1.0.70"
 
 local CONFIG = {
     CLOUD_URL = "ws://stabadmin.fse-media.group",
@@ -975,7 +975,6 @@ function Utils.getNextStation(schedule, currentStationName)
     end
 
     if matchFoundIndex then
-        -- Search forward
         for i = matchFoundIndex + 1, maxIdx do
             local entry = schedule.entries[i]
             if entry and entry.instruction then
@@ -985,16 +984,6 @@ function Utils.getNextStation(schedule, currentStationName)
                 end
             end
         end
-        -- Loop around to beginning
-        for i = 1, matchFoundIndex - 1 do
-            local entry = schedule.entries[i]
-            if entry and entry.instruction then
-                local inst = entry.instruction
-                if inst.id == "create:station" or inst.id == "create:destination" then
-                    return (inst.data and inst.data.text) or inst.text
-                end
-            end
-        end
     end
 
     return nil
@@ -3053,6 +3042,99 @@ local function isStationDestination(destName)
     return true
 end
 
+local function looksLikeValidDestinationText(text)
+    if not text then return false end
+    local s = tostring(text)
+    if s == "" then return false end
+    local lower = string.lower(s)
+    if lower == "unknown" then return false end
+    local questionMarkCount = 0
+    for i = 1, #s do
+        local c = string.sub(s, i, i)
+        if c == "?" then questionMarkCount = questionMarkCount + 1 end
+    end
+    if #s > 0 and questionMarkCount / #s >= 0.5 then return false end
+    local hasRealChar = false
+    for i = 1, #s do
+        local b = string.byte(s, i)
+        if b and b >= 48 and b <= 57 then hasRealChar = true break end
+        if b and b >= 65 and b <= 90 then hasRealChar = true break end
+        if b and b >= 97 and b <= 122 then hasRealChar = true break end
+        if b and b >= 128 then hasRealChar = true break end
+    end
+    if not hasRealChar then return false end
+    return isStationDestination(s)
+end
+
+local function tryCorrectUpcomingEntryWithCurrentTrain(entry)
+    if not State.currentTrain or not entry then return entry end
+    local ctId = State.currentTrain.id
+    local ctDest = State.currentTrain.dest
+    local ctPlatform = tostring(State.stationPlatform or State.currentTrain.platform or "1")
+    local entryPlatform = tostring(entry.platform or "1")
+    local samePlatform = (entryPlatform == ctPlatform)
+    local sameTrain = false
+    if ctId and entry.trainName then
+        sameTrain = Utils.isSameTrain(ctId, entry.trainName)
+    end
+    if not sameTrain and not samePlatform then return entry end
+    local validId = looksLikeValidDestinationText(entry.trainName)
+    local validDest = looksLikeValidDestinationText(entry.dest)
+    if not validId and ctId and ctId ~= "" then
+        entry.trainName = ctId
+    end
+    if not validDest and ctDest and ctDest ~= "" then
+        entry.dest = ctDest
+    elseif sameTrain and ctDest and ctDest ~= "" then
+        if not Utils.isFuzzyMatch(entry.dest or "", ctDest) then
+            local entryDestValid = looksLikeValidDestinationText(entry.dest)
+            if not entryDestValid then
+                entry.dest = ctDest
+            end
+        end
+    end
+    return entry
+end
+
+local function checkIsAtStationWithCurrentTrain(trainName, destination, platform)
+    if not State.currentTrain then return false end
+    local ctId = State.currentTrain.id
+    local ctDest = State.currentTrain.dest
+    local ctPlatform = tostring(State.stationPlatform or State.currentTrain.platform or "1")
+    local trainPlatform = tostring(platform or "1")
+    if trainPlatform == ctPlatform then
+        return true
+    end
+    local sameTrain = false
+    if ctId and trainName then
+        if ctId == trainName then
+            sameTrain = true
+        else
+            local validCT = looksLikeValidDestinationText(ctId)
+            local validEntry = looksLikeValidDestinationText(trainName)
+            if validCT and validEntry then
+                sameTrain = Utils.isSameTrain(ctId, trainName)
+            elseif (not validEntry) and validCT then
+                sameTrain = Utils.isFuzzyMatch(ctDest or "", destination or "")
+            end
+        end
+    end
+    if sameTrain then
+        local entryIdValid = looksLikeValidDestinationText(trainName)
+        if entryIdValid then
+            return true
+        else
+            if Utils.isFuzzyMatch(ctDest or "", destination or "") then
+                return true
+            end
+            if not looksLikeValidDestinationText(destination) then
+                return true
+            end
+        end
+    end
+    return false
+end
+
 function Main.loop()
     while true do
         local now = os.epoch("utc")
@@ -3204,23 +3286,7 @@ function Main.loop()
                             end
                         end
                         
-                        local isAtStation = false
-                        local trainPlatform = tostring(platform or State.stationPlatform or "1")
-                        local currentPlatform = tostring(State.stationPlatform or "1")
-
-                        if State.currentTrain then
-                            if trainPlatform == currentPlatform then
-                                isAtStation = true
-                            elseif State.currentTrain.id == trainName then
-                                if trainName == "???" or trainName == "Unknown" or trainName == "" then
-                                    if Utils.isFuzzyMatch(State.currentTrain.dest, destination) then
-                                        isAtStation = true
-                                    end
-                                else
-                                    isAtStation = true
-                                end
-                            end
-                        end
+                        local isAtStation = checkIsAtStationWithCurrentTrain(trainName, destination, platform)
                         if not isAtStation and etaSeconds > 0 and etaSeconds <= 45 then
                             if not seenApproachKeys[announceKey] then
                                 seenApproachKeys[announceKey] = true
@@ -3358,23 +3424,7 @@ function Main.loop()
                             end
                         end
 
-                        local isAtStation = false
-                        local trainPlatform = tostring(platform or State.stationPlatform or "1")
-                        local currentPlatform = tostring(State.stationPlatform or "1")
-
-                        if State.currentTrain then
-                            if trainPlatform == currentPlatform then
-                                isAtStation = true
-                            elseif State.currentTrain.id == tName then
-                                if tName == "???" or tName == "Unknown" or tName == "" then
-                                    if Utils.isFuzzyMatch(State.currentTrain.dest, dest) then
-                                        isAtStation = true
-                                    end
-                                else
-                                    isAtStation = true
-                                end
-                            end
-                        end
+                        local isAtStation = checkIsAtStationWithCurrentTrain(tName, dest, platform or State.stationPlatform or "1")
                         if not isAtStation and etaSeconds > 0 and etaSeconds <= 45 then
                             if not seenApproachKeys[announceKey] then
                                 seenApproachKeys[announceKey] = true
@@ -3424,6 +3474,10 @@ function Main.loop()
         end
 
 
+        for _, entry in ipairs(newUpcoming) do
+            tryCorrectUpcomingEntryWithCurrentTrain(entry)
+        end
+
         State.upcomingTrains = newUpcoming
 
         if not Peripherals.station then