Refactor monitor setup functions to use shared UI helpers

inventoryManager.lua

@@ -148,6 +148,12 @@ end
 -- Crafting grid-to-slot mapping
 local GRID_TO_SLOT = {1, 2, 3, 5, 6, 7, 9, 10, 11}
 
+-------------------------------------------------
+-- Shared UI helpers (drawing, zones, craft math)
+-------------------------------------------------
+
+local ui = dofile("lib/ui.lua")
+
 -- Active alerts (populated by checkAlerts)
 local activeAlerts = {}
 
@@ -580,49 +586,13 @@ local networkModemName = nil
 local craftTurtleName = nil
 
 local function setupMonitor()
-    mon = peripheral.wrap(MONITOR_SIDE)
-    if mon and mon.setTextScale then
-        monName = MONITOR_SIDE
-    else
-        mon = nil
-    end
-    if not mon then
-        -- Search for a monitor on the network (skip smelter side)
-        for _, name in ipairs(peripheral.getNames()) do
-            if peripheral.getType(name) == "monitor" and name ~= SMELTER_MONITOR_SIDE then
-                mon = peripheral.wrap(name)
-                monName = name
-                break
-            end
-        end
-    end
-    if not mon then return false end
-    mon.setTextScale(0.5)
-    mon.clear()
-    return true
+    mon, monName = ui.setupMonitor(MONITOR_SIDE, SMELTER_MONITOR_SIDE)
+    return mon ~= nil
 end
 
 local function setupSmelterMonitor()
-    smelterMon = peripheral.wrap(SMELTER_MONITOR_SIDE)
-    if smelterMon and smelterMon.setTextScale then
-        smelterMonName = SMELTER_MONITOR_SIDE
-    else
-        smelterMon = nil
-    end
-    if not smelterMon then
-        -- Search for a second monitor on the network
-        for _, name in ipairs(peripheral.getNames()) do
-            if peripheral.getType(name) == "monitor" and name ~= monName then
-                smelterMon = peripheral.wrap(name)
-                smelterMonName = name
-                break
-            end
-        end
-    end
-    if not smelterMon then return false end
-    smelterMon.setTextScale(0.5)
-    smelterMon.clear()
-    return true
+    smelterMon, smelterMonName = ui.setupSmelterMonitor(SMELTER_MONITOR_SIDE, monName)
+    return smelterMon ~= nil
 end
 
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