1. Added a new function `check_external_light_status` to check if the light is turned off externally.
2. Modified the condition in the `check_notification` function to correctly check if the notification contains "[1]" and the specified strings.
3. Corrected the assignment statement inside the `while` loop. Changed `first_brightness_cmason.nvimhange=false` to `first_brightness_change=false`.
