Three small defects found underneath error clusters that are themselves benign.
bounceToAuth returned a bare NextResponse.redirect and never copied the cookies
off supabaseResponse, so the Set-Cookie headers that clear a dead session were
thrown away on the first bounce and the browser replayed the dead refresh token
once more on /login. That doubled both the GoTrue 400s and the log volume. The
AuthApiError itself is left alone: it is correct session-expiry handling that
auth-js logs from inside node_modules, and getUser() returns it as a value.
"The destination stream closed early." is a client disconnecting mid-stream,
produced inside React's Flight server. Next's own isAbortError filter does not
recognise React's cancel error, so instrumentation.ts reported it to PostHog
Error Tracking as a real exception against real users' session replays and paid
an awaited flush on an otherwise-healthy request. A narrow predicate now
early-returns before PostHog is touched. This cannot remove the line from
Vercel's runtime-error table, which is fed by Next's stderr.
other-account-hint.ts issued an unfiltered journal_entries probe on the
blocking Hem render path, inside a render Promise.all: roughly 1 in 20 Hem
loads waited an extra 2.5 s for an advisory nudge. An unfiltered probe on a
multi-tenant table is also a correctness smell. It is now company-scoped and
off the blocking path.
Claude-Session: https://claude.ai/code/session_016ifKg6Ec67A39oxfGPU1yc
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Jakob Wennberg
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