- BackgroundDataService: the session adapter retried connection errors 3x
inside each attempt of the service's own retry loop (up to 16 connection
attempts per request on a dead network). The adapter no longer retries;
ESPN date chunks, which bypass the loop and skip a failed chunk, get a
small connection retry of their own (_ConnectionRetryingSession).
- CI installs web_interface/requirements.txt. The brotli header test now
checks its intent (core never hand-sets br; requests may advertise it when
a decoder is installed) instead of failing whenever brotli is present.
- Every Discord link uses the LEDMatrix server's invite (RdrC37rEag).
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
