feat(ticketmachine, gate): 新增单程票购票功能并优化自动更新逻辑

- 新增完整的单程票购票流程，包含线路票价数据构建、选择页面与订单适配逻辑
- 将版本检查间隔从60秒调整为5秒，新增版本不匹配时自动运行对应更新脚本并重启的逻辑
- 修正列车类型标签格式，将'single'统一为'Single'
- 优化主页按钮布局，新增单程票购票入口
- 完善终端显示与订单成本计算逻辑，适配单程票场景
- 调整gate.lua的终端标题文字显示位置

gate.lua

@@ -2,7 +2,7 @@ local DEFAULT_SERVER_BASE = "http://ticket.fse-media.group"
 local DEFAULT_SERVER_PATH = "/api/tickets/check"
 local GATE_OPEN_SECONDS = 2
 local VERSION = "v1.5.8"
-local VERSION_CHECK_INTERVAL = 60
+local VERSION_CHECK_INTERVAL = 5
 
 local CONFIG_PATH = "gate_config.json"
 
@@ -158,7 +158,7 @@ end
 local function draw(statusLine1, statusLine2, statusColor)
   clear()
   local w, h = termDev.getSize()
-  centerText(1, "GATE", colors.cyan)
+  centerText(2, "GATE", colors.cyan)
   drawVersionIndicator(w)
   drawServerStatusIndicator(w)
   if statusLine1 and #statusLine1 > 0 then
@@ -1352,6 +1352,21 @@ while true do
     pcall(function()
       refreshRemoteLuaVersion(guessBaseFromStatusURL(serverURL))
     end)
+    if versionMismatch == true then
+      pcall(function()
+        clear()
+        local w, h = termDev.getSize()
+        centerText(math.floor(h / 2), "Auto Updating...", colors.yellow)
+      end)
+      pcall(function()
+        if shell and type(shell.run) == "function" then
+          shell.run("update_gate.lua")
+        else
+          os.run(getfenv and getfenv() or _ENV, "update_gate.lua")
+        end
+      end)
+      os.reboot()
+    end
     drawReadyScreen()
     versionTimer = os.startTimer(VERSION_CHECK_INTERVAL)
   end

ticketmachine.lua

@@ -251,7 +251,7 @@ local function normalizeTrainTypeLabel(v)
     return 'Express'
   end
   if s == 'single' then
-    return 'single'
+    return 'Single'
   end
   return 'Local'
 end
@@ -657,6 +657,20 @@ local function backgroundSyncTask()
   while true do
     sleep(5)
     pcall(refreshConfigOnce)
+    if versionMismatch == true then
+      pcall(function()
+        clear()
+        centerText(math.floor(h/2), "Auto Updating...", colors.yellow)
+      end)
+      pcall(function()
+        if shell and type(shell.run) == "function" then
+          shell.run("update_machine.lua")
+        else
+          os.run(getfenv and getfenv() or _ENV, "update_machine.lua")
+        end
+      end)
+      os.reboot()
+    end
   end
 end
 
@@ -1075,6 +1089,7 @@ end
 local function stationDisplay(code)
   code = normalizeCode(code)
   if #code == 0 then return '' end
+  if code == 'SINGLE_SEGMENT' then return 'Any 1 Segment' end
   local st = stationByCode[code]
   if st then return tostring(st.en_name or st.name or code) .. ' ' .. code end
   return code
@@ -1153,43 +1168,152 @@ local function addCancelButton()
   addButton(2, h, 'CANCEL', 8, 1, {colors.red, colors.white}, function() ui_cancel_request = true end)
 end
 
+local singleSegments = nil
+local singleSegmentScroll = 0
+
+local function buildSingleSegments()
+  local segments = {}
+  local fares = CFG.fares or {}
+  for _, line in ipairs(CFG.lines or {}) do
+    local stops = line.stops or line['站点列表'] or {}
+    local lineFares = {}
+    for i = 1, #stops - 1 do
+      local a, b = stops[i], stops[i+1]
+      local f = nil
+      for _, fx in ipairs(fares) do
+        if (fx.from == a and fx.to == b) or (fx.from == b and fx.to == a) then
+          f = fx
+          break
+        end
+      end
+      if f then
+        local cost = tonumber(f.cost_regular or f.cost) or 0
+        lineFares[cost] = true
+      end
+    end
+    for cost, _ in pairs(lineFares) do
+      table.insert(segments, {
+        lineName = line.name or line['线路名称'] or 'Unknown',
+        color = line.color or line['颜色'],
+        cost = cost
+      })
+    end
+  end
+  return segments
+end
+
+local function showSingleSegmentSelection()
+  if not singleSegments then
+    singleSegments = buildSingleSegments()
+  end
+  while state.page == 'single_segment' do
+    drawHeader('Select Single Segment', 'Select a line and fare')
+    Buttons = {}
+    local itemsPerPage = math.floor((h - 10) / 4) * 2
+    if itemsPerPage < 2 then itemsPerPage = 2 end
+    local maxScroll = math.ceil(#singleSegments / itemsPerPage) - 1
+    if maxScroll < 0 then maxScroll = 0 end
+    if singleSegmentScroll > maxScroll then singleSegmentScroll = maxScroll end
+    if singleSegmentScroll < 0 then singleSegmentScroll = 0 end
+    
+    local startIdx = singleSegmentScroll * itemsPerPage + 1
+    local endIdx = math.min(startIdx + itemsPerPage - 1, #singleSegments)
+    
+    local bw = math.floor((w - 6) / 2)
+    local bx1, bx2 = 2, w - bw - 1
+    local by = 5
+    for i = startIdx, endIdx do
+      local seg = singleSegments[i]
+      local colIdx = (i - startIdx) % 2
+      local rowIdx = math.floor((i - startIdx) / 2)
+      local x = colIdx == 0 and bx1 or bx2
+      local y = by + rowIdx * 4
+      
+      local label = seg.lineName .. ' $' .. tostring(seg.cost)
+      if #label > bw then label = label:sub(1, bw) end
+      local isSelected = (state.singleSegment == seg)
+      addButton(x, y, label, bw, 3, {isSelected and colors.green or colors.blue, colors.white}, function()
+        state.singleSegment = seg
+      end)
+    end
+    
+    if singleSegmentScroll > 0 then
+      addButton(w-8, 2, 'UP', 6, 1, {colors.gray, colors.white}, function() singleSegmentScroll = singleSegmentScroll - 1 end)
+    end
+    if singleSegmentScroll < maxScroll then
+      addButton(w-8, h-5, 'DN', 6, 1, {colors.gray, colors.white}, function() singleSegmentScroll = singleSegmentScroll + 1 end)
+    end
+    
+    addCancelButton()
+    addButton(2, h-3, '<-back', 8, 3, {colors.black, colors.red}, function() state.page = 'home' end)
+    if state.singleSegment then
+      addButton(w-9, h-3, 'NEXT->', 8, 3, {colors.black, colors.green}, function() 
+        state.departure = state.singleSegment.lineName
+        state.terminal = 'SINGLE_SEGMENT'
+        state.trainType = 'single'
+        state.trips = 1
+        state.cost = state.singleSegment.cost
+        state.page = 'order' 
+      end)
+    end
+    waitButtons()
+    if ui_cancel_request then
+      renderConfirmCancel()
+      waitButtons()
+      if ui_cancel_confirmed then stopAudio(); state.page = 'home'; ui_cancel_confirmed = false end
+      ui_cancel_request = false
+    end
+  end
+end
+
 local function showHome()
   state.stationName = (CFG.current_station and (CFG.current_station.en_name or CFG.current_station.name)) or 'Station'
   state.stationCode = (CFG.current_station and CFG.current_station.code) or CURRENT_STATION_CODE
   drawHeader('FSE Ticket Machine', 'Select Mode', true)
   Buttons = {}
   local btnW, btnH = 12, 3
-  local y = math.floor(h/2) - 2
+  local y = math.floor(h/2) - 3
   local x1, x2, x3 = math.floor(w/2) - btnW - 2, math.floor(w/2) + 3, math.floor(w/2) - math.floor(btnW / 2)
   if x1 < 2 or (x2 + btnW) > w-1 then
     local cx = math.floor((w - btnW) / 2) + 1
-    addButton(cx, y-2, 'NEW', btnW, btnH, {colors.green, colors.white}, function()
+    addButton(cx, y-4, 'NEW', btnW, btnH, {colors.green, colors.white}, function()
       resetTicketFlow()
       stopAudio(); playAudioFile('Audio/welcome.wav'); waitAudioComplete()
       state.page = 'departure'
     end)
-    addButton(cx, y+2, 'CARD', btnW, btnH, {colors.orange, colors.white}, function()
+    addButton(cx, y, 'SINGLE', btnW, btnH, {colors.blue, colors.white}, function()
+      resetTicketFlow()
+      stopAudio(); playAudioFile('Audio/welcome.wav'); waitAudioComplete()
+      state.page = 'single_segment'
+    end)
+    addButton(cx, y+4, 'CARD', btnW, btnH, {colors.orange, colors.white}, function()
       resetCardFlow('open')
       stopAudio(); state.page = 'card_home'
     end)
-    addButton(cx, y+6, 'ONLINE', btnW, btnH, {colors.cyan, colors.white}, function()
+    addButton(cx, y+8, 'ONLINE', btnW, btnH, {colors.cyan, colors.white}, function()
       resetTicketFlow()
       stopAudio(); state.page = 'online'
     end)
   else
-    addButton(x1, y, 'NEW', btnW, btnH, {colors.green, colors.white}, function()
+    local cx = math.floor((w - btnW) / 2) + 1
+    addButton(x1, y-2, 'NEW', btnW, btnH, {colors.green, colors.white}, function()
       resetTicketFlow()
       stopAudio(); playAudioFile('Audio/welcome.wav'); waitAudioComplete()
       state.page = 'departure'
     end)
-    addButton(x2, y, 'ONLINE', btnW, btnH, {colors.cyan, colors.white}, function()
+    addButton(x2, y-2, 'SINGLE', btnW, btnH, {colors.blue, colors.white}, function()
       resetTicketFlow()
-      stopAudio(); state.page = 'online'
+      stopAudio(); playAudioFile('Audio/welcome.wav'); waitAudioComplete()
+      state.page = 'single_segment'
     end)
-    addButton(x3, y+4, 'CARD', btnW, btnH, {colors.orange, colors.white}, function()
+    addButton(x1, y+2, 'CARD', btnW, btnH, {colors.orange, colors.white}, function()
       resetCardFlow('open')
       stopAudio(); state.page = 'card_home'
     end)
+    addButton(x2, y+2, 'ONLINE', btnW, btnH, {colors.cyan, colors.white}, function()
+      resetTicketFlow()
+      stopAudio(); state.page = 'online'
+    end)
   end
   waitButtons()
 end
@@ -1692,8 +1816,8 @@ local function drawOrder()
     local cardSub = (state.cardMode == 'redeem') and 'Redeem IC card order' or 'Open new stored-value card'
     drawHeader('Confirm Card', cardSub)
   else
-    local depLine = stationDisplay(state.departure)
+    local depLine = (state.trainType == 'single') and state.departure or stationDisplay(state.departure)
-    local terLine = stationDisplay(state.terminal)
+    local terLine = (state.trainType == 'single') and 'Any 1 Segment' or stationDisplay(state.terminal)
     drawHeader('Confirm Order', 'From: ' .. depLine .. '  To: ' .. terLine)
   end
   local y = 5
@@ -1726,9 +1850,11 @@ local function drawOrder()
     L('Type', state.trainType or 'N/A', colors.lightBlue)
     local rides = tonumber(state.trips) or 1
     if cost == nil then
+      if state.trainType ~= 'single' then
         local unit = computeCost(state.departure or '', state.terminal or '', state.trainType or 'Local')
         cost = unit and (unit * rides) or nil
       end
+    end
     L('Trips', rides)
     L('Cost', cost, colors.red)
     if state.voucher_code then
@@ -1784,6 +1910,10 @@ local function showOrderAndAudio()
       state.cost = 0
     end
   elseif not state.voucher_code then
+    if state.trainType == 'single' then
+      -- Cost is already set in showSingleSegmentSelection
+      if state.cost == nil then state.cost = 0 end
+    else
       local unit = computeCost(state.departure or '', state.terminal or '', state.trainType or 'Local')
       if not unit then
         showAlert('No route')
@@ -1791,11 +1921,12 @@ local function showOrderAndAudio()
         return
       end
       state.cost = unit * (state.trips or 1)
+    end
   else
     if state.cost == nil then state.cost = 0 end
   end
 
-  if state.productMode ~= 'card' and sameLogicalStation(state.departure, state.terminal) then
+  if state.productMode ~= 'card' and state.trainType ~= 'single' and sameLogicalStation(state.departure, state.terminal) then
     showAlert('Same station')
     state.page = state.voucher_code and 'online' or 'terminal'
     return
@@ -2324,6 +2455,7 @@ end
 local function mainPageLoop()
   while true do
     if state.page == 'home' then showHome()
+    elseif state.page == 'single_segment' then showSingleSegmentSelection()
     elseif state.page == 'card_home' then showCardHome()
     elseif state.page == 'card_name' then showCardNameInput()
     elseif state.page == 'card_topup' then showCardTopup()