Enhance state management: implement version tracking and conditional broadcasting for configuration updates

inventoryManager.lua

@@ -681,6 +681,18 @@ local LOW_STOCK_ALERTS = {
 -- Active alerts (populated by checkAlerts)
 local activeAlerts = {}
 
+-------------------------------------------------
+-- State version tracking (for delta broadcasting)
+-------------------------------------------------
+
+local stateVersion = 0
+local lastBroadcastVersion = -1
+local configDirty = true
+
+local function bumpStateVersion()
+    stateVersion = stateVersion + 1
+end
+
 -------------------------------------------------
 -- Cached data (updated by background scanner)
 -------------------------------------------------
@@ -769,6 +781,9 @@ local function adjustCache(itemName, chestName, delta)
 
     -- 3) Update grandTotal incrementally
     cache.grandTotal = cache.grandTotal + delta
+
+    -- 4) Bump state version for delta broadcasting
+    bumpStateVersion()
 end
 
 --- Rebuild itemList from catalogue if dirty (lazy rebuild)
@@ -3065,9 +3080,11 @@ end
 -- Network broadcast (sends state to client displays)
 -------------------------------------------------
 
-local function broadcastState()
+local function broadcastState(force)
     if not networkModem then return end
     ensureItemList()
+
+    -- Build dynamic state (always included)
     local state = {
         type            = "state",
         cache           = {
@@ -3088,11 +3105,18 @@ local function broadcastState()
         alerts          = activeAlerts,
         smeltingPaused  = smeltingPaused,
         disabledRecipes = disabledRecipes,
-        smeltable       = SMELTABLE,
-        craftable       = CRAFTABLE,
         craftTurtleOk   = craftTurtleName and peripheral.isPresent(craftTurtleName),
     }
+
+    -- Include static config only when dirty (startup, scan, recipe toggles)
+    if configDirty then
+        state.smeltable = SMELTABLE
+        state.craftable = CRAFTABLE
+        configDirty = false
+    end
+
     networkModem.transmit(BROADCAST_CHANNEL, ORDER_CHANNEL, state)
+    lastBroadcastVersion = stateVersion
 end
 
 -------------------------------------------------