fix: chatmix direction display, mock battery walkdown, mock chatmix, sendCommand guard

headsetcontrol/lib/hsc.luau

@@ -92,12 +92,18 @@ end
 
 -- Mock battery walks down 88 -> 10 then resets, exercising all color bands + warning.
 local mockBattery = 88
+local function mockChatmix()
+  if mockBattery > 60 then return 40 end
+  if mockBattery > 30 then return -40 end
+  return 0
+end
 local function nextMockStatus()
-  mockBattery = mockBattery - 1
   if mockBattery < 10 then mockBattery = 88 end
+  local level = mockBattery
+  mockBattery = mockBattery - 1
   return {
-    battery = { status = "BATTERY_NORMAL", level = mockBattery },
-    chatmix = 0,
+    battery = { status = "BATTERY_NORMAL", level = level },
+    chatmix = mockChatmix(),
   }
 end
 
@@ -136,6 +142,7 @@ function M.fetchStatus(cb)
 end
 
 -- Runs a command as an argv array: sendCommand({"-s", "64"}, cb).
+-- cb(result) receives { exitCode, stdout, stderr, ... }; callers must check result.exitCode.
 function M.sendCommand(args, cb)
   if config.mock then
     if cb then cb({ exitCode = 0, stdout = "", stderr = "" }) end
@@ -143,14 +150,19 @@ function M.sendCommand(args, cb)
   end
   local argv = { "headsetcontrol" }
   for _, a in ipairs(deviceArgs()) do table.insert(argv, a) end
-  for _, a in ipairs(args) do table.insert(argv, a) end
+  if args ~= nil then
+    for _, a in ipairs(args) do table.insert(argv, a) end
+  end
   noctalia.runAsync(argv, cb or function() end)
 end
 
+-- chatmix direction is device-ambiguous. Negative = game side on signed-convention
+-- devices; positive is shown raw because center/direction conventions vary by device
+-- (e.g. Maxwell uses unsigned 0-128 centered at 64).
 function M.chatmixText(value)
-  if value == 0 then return "0" end
   if value < 0 then return tostring(value) .. " \194\183 " .. noctalia.tr("chatmix.game") end
-  return tostring(value) .. " \194\183 " .. noctalia.tr("chatmix.chat")
+  if value == 0 then return "0" end
+  return tostring(value)
 end
 
 return M