fix(station_broadcast): 修复 Utils 为 nil 导致启动崩溃的前向引用问题

- 原因: Lua local 变量按声明顺序起作用域，Peripherals.init() 在 L96 定义（体内 L188 引用 Utils.log），而 local Utils={} 原本在 L195 才声明，导致函数体内引用成 _G.Utils（全局，nil）
- 修复: 在文件 L71 附近集中前向声明所有顶层模块（Peripherals / Utils / Display / Audio / Network / Main），删除各章节头部重复的 local Module = {}，保证 Lua 解析时能正确捕获 local 上值
- APP_VERSION_TEXT bump 到 v1.0.108

station_broadcast.lua

@@ -1,6 +1,6 @@
 
 -- 1. Configuration & Constants
-local APP_VERSION_TEXT = "v1.0.107"
+local APP_VERSION_TEXT = "v1.0.108"
 
 local CONFIG = {
     CLOUD_URL = "ws://stabadmin.fse-media.group",
@@ -69,6 +69,11 @@ local State = {
 -- 3. Peripherals Setup
 
 local Peripherals = {}
+local Utils = {}
+local Display = {}
+local Audio = {}
+local Network = {}
+local Main = {}
 
 function Peripherals.isTrainStationPeripheral(name)
     if not name then
@@ -190,7 +195,6 @@ end
 
 -- 4. Utility Functions
 
-local Utils = {}
 
 function Utils.log(level, message)
     if level == "DEBUG" and not CONFIG.DEBUG then return end
@@ -1106,7 +1110,6 @@ end
 
 -- 5. Audio System
 
-local Audio = {}
 
 function Audio.createStream()
     local chunks = {}
@@ -2718,7 +2721,6 @@ end
 -- ============================================================================
 -- 6. Network System
 -- ============================================================================
-local Network = {}
 
 function Network.connect()
     if State.ws then return end
@@ -3080,7 +3082,6 @@ end
 
 -- 7. Display System
 
-local Display = {}
 
 function Display.render()
     local mon = Peripherals.primaryMonitor
@@ -3490,7 +3491,7 @@ end
 
 -- 8. Main Logic
 
-local Main = {}
+
 State.announcedApproaching = {}
 State.announcedAlerts = {}
 State.pendingAlerts = {}