fix: replace sleep(0) with os.pullEvent() + add diagnostic logging

sleep(0) wakes the processor only on timer ticks, causing a
1-tick delay. os.pullEvent() with no filter wakes the processor
on ANY event — including the modem_message that triggered the
capture — so items are processed in the same event cycle.

Added logging to capture and processor tasks:
- NET-CAP: logs each queued message with type and queue depth
- NET-PROC: logs each message being processed
- Both log on startup to confirm they're running

inventoryManager.lua

@@ -640,12 +640,15 @@ local function main()
         -- miss events while other tasks yield for "task_complete" etc.
         resilient("Network-capture", function()
             if not ctx.networkModem then
+                log.warn("NET-CAP", "No modem — capture task idle")
                 while true do sleep(3600) end
             end
+            log.info("NET-CAP", "Capture task started, listening on ch %d", cfg.ORDER_CHANNEL)
             while true do
                 local event, side, channel, replyChannel, message, distance = os.pullEvent("modem_message")
                 if channel == cfg.ORDER_CHANNEL and type(message) == "table" then
                     table.insert(networkQueue, { replyChannel = replyChannel, message = message })
+                    log.info("NET-CAP", "Queued: type=%s queue=%d", tostring(message.type), #networkQueue)
                 end
             end
         end),
@@ -653,16 +656,20 @@ local function main()
         -- Task 13b: Network message processor (drains queue — safe to yield)
         resilient("Network-processor", function()
             if not ctx.networkModem then
+                log.warn("NET-PROC", "No modem — processor task idle")
                 while true do sleep(3600) end
             end
+            log.info("NET-PROC", "Processor task started")
             while true do
                 if #networkQueue == 0 then
-                    sleep(0)
+                    os.pullEvent()
                 end
                 while #networkQueue > 0 do
                     local entry = table.remove(networkQueue, 1)
                     local message = entry.message
                     local replyChannel = entry.replyChannel
+                    log.info("NET-PROC", "Processing: type=%s id=%s queue=%d",
+                        tostring(message.type), tostring(message.commandId), #networkQueue)
 
                     if isCommandDuplicate(message.commandId) then
                         log.debug("NET", "Duplicate command skipped: %s", tostring(message.commandId))