fix: split Network-listener into capture/processor to prevent modem_message loss

CC:Tweaked's parallel.waitForAny drops events when a coroutine's
filter doesn't match. The old Network-listener processed commands
inline, causing it to yield with filter 'task_complete' during
peripheral calls (pushItems, list, etc). Any modem_message arriving
during that window was consumed by the scheduler and lost.

Split into two coroutines:
- Network-capture: only ever yields for 'modem_message', inserts
  into a shared networkQueue table, queues 'network_queued' event
- Network-processor: drains the queue and runs all handler logic,
  safe to yield for peripheral calls without losing messages

This fixes the ~80% message loss rate on dispense requests.

inventoryManager.lua

@@ -383,6 +383,11 @@ local function main()
     -- Parallel tasks
     -----------------------------------------------
 
+    -- Shared queue: capture task writes here, processor task reads.
+    -- This ensures modem_message events are never lost while the
+    -- processor yields for peripheral calls (pushItems, list, etc).
+    local networkQueue = {}
+
     parallel.waitForAny(
         -- Task 1: Background inventory scanner
         resilient("Scanner", function()
@@ -630,14 +635,36 @@ local function main()
             end
         end),
 
-        -- Task 13: Network order/command listener
+        -- Task 13a: Network message capture (fast — never yields to peripheral calls)
-        resilient("Network-listener", function()
+        -- This coroutine's filter is ALWAYS "modem_message", so it can never
+        -- miss events while other tasks yield for "task_complete" etc.
+        resilient("Network-capture", function()
             if not ctx.networkModem then
                 while true do sleep(3600) end
             end
             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 })
+                    os.queueEvent("network_queued")
+                end
+            end
+        end),
+
+        -- Task 13b: Network message processor (drains queue — safe to yield)
+        resilient("Network-processor", function()
+            if not ctx.networkModem then
+                while true do sleep(3600) end
+            end
+            while true do
+                if #networkQueue == 0 then
+                    os.pullEvent("network_queued")
+                end
+                while #networkQueue > 0 do
+                    local entry = table.remove(networkQueue, 1)
+                    local message = entry.message
+                    local replyChannel = entry.replyChannel
+
                     if isCommandDuplicate(message.commandId) then
                         log.debug("NET", "Duplicate command skipped: %s", tostring(message.commandId))
                     else
@@ -888,7 +915,7 @@ local function main()
                             log.error("NET", "Handler error: %s", tostring(handlerErr))
                         end
                     end -- idempotency else
-                end
+                end -- queue loop
             end
         end)
     )