When the backend or identity provider was unreachable, a returning user with a
persisted session landed on the dashboard with an empty trip grid and no error.
That looks identical to a logged-in user who simply has no trips, so people
assumed their data had been lost.
Three client-side layers were quietly swallowing the failure: the auth check
only cleared state on a 401, so a 5xx or a network error left the stale session
in place and kept rendering the protected route; the offline-first trip repo
turned a failed fetch into the empty cache without throwing; and the dashboard
had neither an error nor an empty state, so a blank grid meant both "outage" and
"no trips".
The auth check now tells genuine offline (keep serving the cache silently, the
PWA happy path) apart from a server outage while online (keep the session but
flag it). The dashboard shows a reassuring "couldn't reach the server, your
trips are safe" banner with a retry, and a real zero-trip account finally gets a
proper empty state so the two cases never look alike. New strings added across
all locales.
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