feat: 新增设备位置追踪与网页管理页面

- 更新服务端默认Lua版本与客户端程序版本至 v1.5.16
- 新增后端API接口用于提交和查询设备位置数据
- 为售票机和检票机添加后台GPS位置同步任务，定期上报设备坐标
- 服务端新增设备位置缓存，并自动清理超过5分钟未更新的过期数据
- 新增网页端设备位置地图页面，支持实时展示、点击查看详情与每分钟自动刷新

gate.lua

@@ -1,7 +1,7 @@
 local DEFAULT_SERVER_BASE = "http://ticket.fse-media.group"
 local DEFAULT_SERVER_PATH = "/api/tickets/check"
 local GATE_OPEN_SECONDS = 2
-local VERSION = "v1.5.15"
+local VERSION = "v1.5.16"
 local VERSION_CHECK_INTERVAL = 5
 
 local CONFIG_PATH = "gate_config.json"
@@ -1498,21 +1498,49 @@ local function processInspectionEvent(eventName, ev)
   end
 end
 
-local versionTimer = os.startTimer(VERSION_CHECK_INTERVAL)
+local function mainLoop()
+  while true do
+    local ev = pack(os.pullEvent())
+    if ev[1] == "ticket_scanned" or ev[1] == "ic_card_scanned" then
+      processInspectionEvent(ev[1], ev)
+      os.sleep(0.35)
+      drawReadyScreen()
+    end
+  end
+end
 
-
-
-while true do
-  local ev = pack(os.pullEvent())
-  if ev[1] == "ticket_scanned" or ev[1] == "ic_card_scanned" then
-    processInspectionEvent(ev[1], ev)
-    os.sleep(0.35)
-    drawReadyScreen()
-  elseif ev[1] == "timer" and ev[2] == versionTimer then
+local function backgroundSyncTask()
+  while true do
+    sleep(VERSION_CHECK_INTERVAL)
     pcall(function()
       refreshRemoteLuaVersion(guessBaseFromStatusURL(serverURL))
     end)
     pcall(checkAndApplyUpdate)
-    versionTimer = os.startTimer(VERSION_CHECK_INTERVAL)
   end
 end
+
+local function backgroundLocationSyncTask()
+  while true do
+    if gps and type(gps.locate) == "function" then
+      local x, y, z = gps.locate(2)
+      if x and y and z then
+        local label = os.getComputerLabel()
+        if not label or label == "" then label = "#" .. tostring(os.getComputerID()) end
+        local payload = {
+          device_id = label,
+          type = "Gate",
+          gate_mode = modeBySide and "bidirectional" or mode,
+          station_code = stationCodeForSide(nil) or "",
+          x = x,
+          y = y,
+          z = z
+        }
+        local serverBase = guessBaseFromStatusURL(serverURL)
+        pcall(postCheck, serverBase .. '/api/machine-location', payload)
+      end
+    end
+    sleep(60)
+  end
+end
+
+parallel.waitForAny(mainLoop, backgroundSyncTask, backgroundLocationSyncTask)