Consolidate progress bar logic into missile widget

Remove unnecessary separate helper widget. Handle progress bar updates directly
in the missile widget's Update function. Simplifies codebase without losing functionality.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GiaPfKSj8kGFjaUPyxYYHd

Author: claude

LuaUI/Widgets/gui_missile_progress.lua

@@ -537,16 +537,13 @@ function widget:Update(dt)
   end
   timer = 0
 
-  WG.missileProgress = WG.missileProgress or {}
+  local integralMenu = widgetHandler:FindWidget("Chili Integral Menu")
 
   for _, command in pairs(commands) do
     local count = command:getCount()
     local buildProgress = command:getMaxBuildProgress()
     local customCommands = widgetHandler.customCommands
 
-    -- Export progress data for other widgets
-    WG.missileProgress[command.cmd] = buildProgress
-
     for i = 1, #customCommands do
       if customCommands[i].id == command.cmd then
         local displayName = ""
@@ -562,6 +559,11 @@ function widget:Update(dt)
           end
         end
         customCommands[i].name = displayName
+
+        -- Update visual progress bar on integral menu button if available
+        if integralMenu and integralMenu.SetCmdButtonProgress and buildProgress > 0 then
+          integralMenu:SetCmdButtonProgress(command.cmd, buildProgress)
+        end
         break
       end
     end