Wire the host side of the new advertisement observer (continuous scan,
bounded staleness map, ingestion filter) and add a BLETemp app that
decodes ATC_MiThermometer adverts (service data 0x181A, ATC1441 and pvvx
formats) from ble.observed(). Migrate the Settings/Ble picker off the
removed blocking scan onto observe()/observed().
Remove the Hello and Scroll demo apps; BLETemp now serves as the
tree-owned-scrolling example in the docs.
AGENTS.md gains a Design Stance: this is pre-release firmware, so a wrong
abstraction gets redesigned, not extended with a compat shim.
BLE cannot run in the emulator, so the app logic is covered by host tests
(test/bletemp.lua) against fake_device.
evan
96c1a68ee0