classifyPolarError now lifts a 400 carrying invalid_grant on the token
endpoint from persistent to reauth_required, mirroring Oura via the shared
isOAuthInvalidGrant helper. A stale or replayed authorization code at connect
time now surfaces the reconnect prompt instead of silently parking after 24 h.
The BYO-credentials DELETE now audit-logs and parks the integration ledger at
disconnected for parity with the dedicated disconnect route, and the PUT
audit-logs the credential write. Refresh the connect-route comment that still
described Polar as env-only OAuth; it has resolved BYO-first since v1.17.1.
Add the invalid_grant classification test plus the previously-missing
callback (happy path, CSRF mismatch, cross-user, off-spec token), connect, and
credentials route tests.
Polar and Oura resolved their OAuth client id/secret from the server
environment only, forcing every user on a deploy to share one app. Both
now read per-user BYO keys first, falling back to the shared env app when
unset, mirroring the WHOOP and Fitbit model.
- Add DB-first-then-env resolvers in src/lib/{polar,oura}/credentials.ts,
encrypting the client id/secret at rest on User.
- Repoint the connect, callback, status routes and the Oura refresh path
to the user-scoped resolver.
- Add /api/{polar,oura}/credentials (GET/PUT/DELETE) with Zod-validated
input and userId narrowed from the session.
- Render an optional 'your OAuth app credentials' form on the Polar and
Oura cards; the status read exposes hasOwnCredentials for the saved
placeholder. Existing env-only deploys keep working unchanged.
- Cover both resolvers (DB hit, env fallback, no creds) and the card form
with unit tests; add the new strings across all six locales.
Marc-André Bombeck