Remove screen override timeout to allow drawing to persist indefinitely

main.py

@@ -103,12 +103,7 @@ def main():
         # A. Handle non-blocking MCP client connection updates
         mcp.update()
         
-        # B. Check if custom draw text override has expired
-        if mcp.override_active and time.ticks_diff(now, mcp.override_timeout) > 0:
-            print("MCP Screen override expired. Returning to status dashboard...")
-            mcp.override_active = False
-            force_dashboard_redraw = True
-            
+
         # C. Draw local dashboard (if not overridden by MCP draw text commands)
         if not mcp.override_active:
             if force_dashboard_redraw or time.ticks_diff(now, last_dashboard_update) >= dashboard_update_interval_ms: