Wires capture -> apply -> cleanup into cycle(cfg): per-file capture and
cleanup each wrapped in try/except + log.exception so one file's failure
does not abort the cycle; apply failure does not block cleanup; writer is
always closed in finally. run(cfg) loops cycle with sleep; main() loads
config from argv. logging_setup uses RotatingFileHandler 10MBx5 + console.
Unit tests cover all three error-isolation branches via mocks (no real
end-to-end smoke; integration deferred to Task 9 pilot).
Co-Authored-By: Claude <noreply@anthropic.com>
3a3d3d0292