fix: avoid monitor log overlap and show upcoming status

station_broadcast.lua

@@ -2,7 +2,7 @@
 -- ============================================================================
 -- 1. Configuration & Constants
 -- ============================================================================
-local APP_VERSION_TEXT = "v1.0.26"
+local APP_VERSION_TEXT = "v1.0.27"
 
 local CONFIG = {
     CLOUD_URL = "ws://stabadmin.fse-media.group",
@@ -2025,6 +2025,7 @@ function Display.render()
     local mon = Peripherals.primaryMonitor
     if not mon then return end
     local w, h = mon.getSize()
+    local contentBottom = 4
     mon.clear()
     mon.setCursorPos(1,1)
     mon.setTextColor(COLORS.INFO)
@@ -2090,6 +2091,9 @@ function Display.render()
                 mon.setTextColor(COLORS.ERROR)
                 mon.write("Departing...")
             end
+            contentBottom = 9
+        else
+            contentBottom = 7
         end
     else
         mon.setCursorPos(1,5)
@@ -2099,32 +2103,49 @@ function Display.render()
         else
             mon.write("SLAVE NODE MODE")
         end
+        contentBottom = 5
     end
     
     -- Upcoming Trains
-    if State.upcomingTrains and #State.upcomingTrains > 0 then
+    local logsStartY = h
-        local startY = State.currentTrain and 10 or 7
+    local upcomingStartY = contentBottom + 1
-        mon.setCursorPos(1, startY)
+    if Peripherals.blockReader or Peripherals.createTarget then
+        local hasUpcoming = State.upcomingTrains and #State.upcomingTrains > 0
+        local maxUpcomingRows = math.max(0, h - upcomingStartY)
         mon.setTextColor(COLORS.DEBUG)
+        mon.setCursorPos(1, upcomingStartY)
         mon.write("UPCOMING TRAINS:")
-        mon.setTextColor(COLORS.INFO)
+        if hasUpcoming then
-        for i = 1, math.min(3, #State.upcomingTrains) do
+            mon.setTextColor(COLORS.INFO)
-            local t = State.upcomingTrains[i]
+            local visibleCount = math.min(3, #State.upcomingTrains, math.max(0, maxUpcomingRows - 1))
-            mon.setCursorPos(1, startY + i)
+            for i = 1, visibleCount do
-            local delayStr = t.delay > 0 and (" [+" .. t.delay .. "m]") or ""
+                local t = State.upcomingTrains[i]
-            local lineText = string.format("%s->%s ETA:%ds%s", t.trainName, t.dest, t.eta, delayStr)
+                mon.setCursorPos(1, upcomingStartY + i)
-            if #lineText > w then lineText = lineText:sub(1, w) end
+                local delayStr = t.delay > 0 and (" [+" .. t.delay .. "m]") or ""
-            mon.write(lineText)
+                local lineText = string.format("%s->%s ETA:%ds%s", t.trainName, t.dest, t.eta, delayStr)
+                if #lineText > w then lineText = lineText:sub(1, w) end
+                mon.write(lineText)
+            end
+            logsStartY = upcomingStartY + visibleCount + 1
+        else
+            mon.setTextColor(COLORS.WARNING)
+            if upcomingStartY + 1 <= h then
+                mon.setCursorPos(1, upcomingStartY + 1)
+                mon.write("NONE / WAITING DATA")
+                logsStartY = upcomingStartY + 2
+            else
+                logsStartY = upcomingStartY + 1
+            end
         end
     end
     
     -- Logs
-    local y = h - 3
+    local maxLogLines = math.min(3, math.max(0, h - logsStartY + 1))
-    for i = 1, 3 do
+    for i = 1, maxLogLines do
         local logIdx = i + State.logScrollOffset
         local entry = State.logs[logIdx]
         if entry then
-            mon.setCursorPos(1, y + i - 1)
+            mon.setCursorPos(1, logsStartY + i - 1)
             mon.setTextColor(COLORS[entry.level] or colors.white)
             mon.write(entry.text:sub(1, w)) 
         end