feat(station): add visible build version reporting

Add a station build version counter, show it on the monitor and terminal header, log it at startup, and report it to the server during register and heartbeat so deployed client versions are visible during troubleshooting.

station_broadcast.lua

@@ -2,6 +2,9 @@
 -- ============================================================================
 -- 1. Configuration & Constants
 -- ============================================================================
+local APP_VERSION = 1
+local APP_VERSION_TEXT = "v" .. tostring(APP_VERSION)
+
 local CONFIG = {
     CLOUD_URL = "ws://stabadmin.fse-media.group",
     API_URL = "http://stabadmin.fse-media.group",
@@ -1108,7 +1111,8 @@ function Network.register()
         type = "station_register",
         stationName = State.stationName,
         stationCode = State.stationCode,
-        stationPlatform = State.stationPlatform
+        stationPlatform = State.stationPlatform,
+        stationVersion = APP_VERSION_TEXT
     })
 end
 
@@ -1291,7 +1295,8 @@ function Network.heartbeat()
                 type = "heartbeat",
                 stationName = State.stationName,
                 stationCode = State.stationCode,
-                stationPlatform = State.stationPlatform
+                stationPlatform = State.stationPlatform,
+                stationVersion = APP_VERSION_TEXT
             })
         end
         os.sleep(10)
@@ -1309,7 +1314,7 @@ function Display.render()
     mon.clear()
     mon.setCursorPos(1,1)
     mon.setTextColor(COLORS.INFO)
-    mon.write("STATION: " .. State.stationName)
+    mon.write("STATION: " .. State.stationName .. " " .. APP_VERSION_TEXT)
     mon.setCursorPos(1,2)
     mon.write("TIME: " .. os.date("%H:%M:%S"))
 
@@ -1397,7 +1402,7 @@ function Display.renderTerminal()
     term.setBackgroundColor(colors.gray)
     term.setTextColor(colors.white)
     term.clearLine()
-    local title = " Station Broadcast Console (" .. State.stationName .. ") "
+    local title = " Station Broadcast Console (" .. State.stationName .. " / " .. APP_VERSION_TEXT .. ") "
     term.setCursorPos(math.floor((w - #title)/2) + 1, 1)
     term.write(title)
     term.setBackgroundColor(colors.black)
@@ -1542,6 +1547,7 @@ end
 -- ============================================================================
 Peripherals.init()
 Audio.loadStationList()
+Utils.log("INFO", "StationBroadcast version " .. APP_VERSION_TEXT)
 
 parallel.waitForAny(
     function()