OPDS servers that allow anonymous access (e.g. Calibre-Web) return 200
without a WWW-Authenticate challenge. `fetchWithAuth` only attached
credentials on a 401/403 retry, so a user who configured valid login
details kept seeing guest-only content (own shelves missing).
Send a Basic Authorization header on the first request whenever
credentials are available. Digest auth still falls through to the
challenge-driven retry since it can't be sent preemptively, and the
retry is skipped when it would just repeat the preemptive Basic header.
Fixes#4202
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Huang Xin
83607d14ea