Adds power_hal_pwr_long_pressed() and power_hal_pwr_released() to the HAL
contract so shared code can implement a hold-to-pair gesture board-agnostically.
- 216: enable the AXP2101 PKEY LONG + POSITIVE IRQs; bump press-off to 8s so a
~3-6s pair hold doesn't trip the hardware shutdown.
- 1.8": synthesize the same long/release edges in software from the polled
XCA9554 EXIO4 level (short-press now fires on release-if-short).
- template: stub the two new functions (no gesture) for new ports.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
