Squarp Hermod+ firmware

Highlights: CUSTOM SCALES — create and store up to 16 custom scales with a built-in piano editor; saved as files on SD card. MIDI OUTPUT EFFECT — sends MIDI at any point in the effect chain for split MIDI+CV workflows. BERNOULLI EFFECT — probabilistic routing between two paths. TRACK NAMING — custom names up to 12 chars, persisted across saves. USB HOST COMPATIBILITY — major improvements; Sequential Take 5, OB-X8, OP-1, ROLI Seaboard M, Roland A-88 and more now work. JITTER MONITOR — measures NOTE ON timing jitter for MIDI DIN, USB DEVICE and USB HOST. Effects: HOLD effect, EUCLID RESET param, MOD INTERPOLATION curves (OFF/LIN/S-curve/LOG/EXP), ENV release for aftertouch, GLIDE extended to 1 min, more clock divisions, SONG MODE improvements. Bug fixes: crash fixes for STEP EDIT multi-selection, USB HOST/DEVICE MIDI clock jitter during SD card operations, CV INPUT voltages above 5V now correctly read, clock output state on MIDI stop fixed.