The admin log viewer only ever showed exceptions from device.py, not
successful requests -- no way to see a request that was slow-but-200,
or a device probing with a stale/wrong token. Adds a middleware that
logs method, path, device id (never the token), status, and wall time
for every /frame/* request.
The root logger previously had no handler at all, so every module's
logger.info() call (user creation, claims, password resets, ...) was
silently dropped, not just unviewable. Adds a RotatingFileHandler
writing into the existing /data volume so log content also survives
container restarts/redeploys, plus /admin/logs (tail + line-count
picker + full-file download) alongside the existing Users & Frames
admin page.
tfaour