Fiat eDoblo: add passive lock status

[strangesource]

Problem

The Fiat e-Doblo / Stellantis EMP2 module did not map the validated passive lock-state frame to the standard OVMS lock metric.

Validated passive signal:

• CAN ID 0x612
• Byte 1 bit 0x02 means unlocked
• OVMS mapping: v.e.locked = !(d[1] & 0x02)

Validated payloads:

• locked: 612 00 20 01 00 07 fe 00 10
• unlocked: 612 00 22 01 00 07 fe 00 10

Root cause / code path

OvmsVehicleFiatEDoblo::IncomingFrameCan1() is the passive CAN decode path for the FTDO BSI CAN bus. It already decodes related body/status frames such as 0x412 door state, but had no case for the validated 0x612 lock-state frame.

Fix

Add a case 0x612 passive decode in vehicle_fiatedoblo.cpp and set:

StandardMetrics.ms_v_env_locked->SetValue((d[1] & 0x02) == 0);

Also update the FTDO user docs and changelog to mention passive lock status.

Validation performed

Runtime validation on an OVMS module configured as FTDO on Citroen e Berlingo

Notes:

• Unlocking mechanically with the key while the car remains asleep did not emit 0x612; the metric remains the last observed passive CAN state until the BSI wakes and sends the frame.