Watch recordings arrived on the phone as 28-byte header-only m4a files
(record() reported success but no audio was ever captured). Activate the
audio session via watchOS's async activate(options:), drop the .spokenAudio
mode experiment, match the phone recorder's proven AAC settings
(44.1 kHz / 48 kbps), and surface silent failures: an AVAudioRecorderDelegate
catches encode errors mid-take, and a stop-time guard detects a dead
header-only file, deletes it, and shows the failure on the watch instead of
shipping an unplayable note to the phone.
Claude-Session: https://claude.ai/code/session_014esDWi42URLEC6Cj17hGQ3
rzen
c29d25748a