ORBIT 0.9.B — Bluetooth MIDI sound variant

Download orbit-ble.fwsc for the M-VAVE FM-1. This is the separate
Bluetooth MIDI variant of ORBIT 0.9.0, not a replacement for
the default sample-based build. Both use the FM-1_900 installation identity.

• Turn the radio on with MENU > SYSTEM > BLUETOOTH. It starts off
  after reboot and advertises as ORBIT FM-1.
• To follow an external BLE MIDI clock, choose GLO > SYSTEM > SYNC = USB;
  BLE input shares the USB clock-input route.
• Hold ENV + LFO for 2 seconds for controller mode. Keys send notes,
  knobs send assignable CCs, and the sequencer keeps playing.
• Melodic built-in samples become same-named FM voices. The original PERC
  drum samples and user-sample playback remain available. See the
  complete sound list.
• The delay line is shorter: about 0.74 seconds, or 0.37 seconds per side
  in PING mode.
• Writes to FM6/USR4 sectors containing stock radio calibration are refused.
  Radio startup needs valid original calibration or its retained device-local copy.
• MIDI clock generation and outgoing SysEx over BLE are not implemented.

The installed device reported FELUCCA ORBIT 0.9.B. The device owner
confirmed BLE pairing and external-clock synchronization. Hardware timing,
worst-case radio/audio load and stack high-water remain unmeasured.
The default SAMPLE/GRAIN static-cost baselines are exceeded by this variant;
the measured values and host checks are recorded in
VALIDATION.

Compare the two sound builds in the
web emulator.
Browser audio uses the firmware C engine, not a JavaScript approximation.
The browser does not emulate Bluetooth.

Bluetooth integration is ported from Hortator 4e40f27 by DEADACTIVE,
with felucca-ble/Felucca credits and SHA-256-pinned JieLi SDK inputs.
See LICENSING. The SLOOP 2.8.4 fixes and unchanged
ORP8/OPB3 storage contracts are described in the shared notes.