[reTerminal E1002 / ESP32-S3] Buttons no longer send events after updating to firmware 2.1

[Wambo86]

Board: Seeed reTerminal E1002 (ESP32-S3), board_type 13, revision 1
Firmware: 2.1 (flashed via the web Toolbox). Buttons worked on the previously
installed version (updated from it yesterday).
Sender: Home Assistant 2026.7.1 with the OpenDisplay integration, via ESPHome
Bluetooth proxy. Signal strength is good.

Problem:
Since updating to 2.1, the three hardware buttons are completely dead:

1. Pressing a button while the device is in deep sleep no longer wakes it.
   No advertisement of any kind is sent (verified via HA Bluetooth history —
   zero BLE traffic on button press).
2. Pressing a button while the device is awake and advertising (sensor/battery
   data arrives fine in the v1 advertisement) does not change the button
   press counter either. The button bytes in the advertisement never change.

Before the update, both worked: a button press woke the device from deep sleep
and the press counter in the advertisement updated, firing the HA event
entities.

Config is intact and not the cause:

• binary_inputs packet: input_type 1, pins 3/4/5, isused 0x7, invert 0x7
• Verified via config export before and after the update.
• I also did a full re-flash of 2.1 plus fresh reconfiguration — same result.

Steps to reproduce:

1. Flash 2.1 on a reTerminal E1002, configure buttons (pins 3/4/5).
2. Press any button while the device is awake and advertising.
3. Observe the advertisement: button counters never change.

Expected: Button press updates the press counter in the advertisement
(and wakes the device from deep sleep, as in previous versions).

Happy to provide config exports, logs, or test builds.