Lower the default and minimum snapshot interval (10s/2s -> 2s/1s) and
refresh the selected device's thumbnail on its own 1s timer instead of
waiting for the 5s device-list poll, so the preview updates fast
enough to feel close to live video without building an actual
streaming pipeline.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
IPTV.py now writes logs to a rotating file and forwards critical VLC
playback errors (start timeout, MediaPlayerEncounteredError) to the
server instead of losing everything to unredirected print() calls.
The web UI's device menu gets a working Terminal (to run diagnostic
commands like tail on the log) and a Recent errors view backed by a
capped last_errors list on each device document, keeping DB volume
bounded to the last 5 entries per device.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
