TestPhase8RedLifecycleFramework drives exchange -> rotate -> replay against
the real (in-memory-backed) Server.Token and fails while rotateRefreshToken
is 08-04's invalid_grant placeholder (PHASE8_RED:lifecycle-framework,
verified fail-closed via scripts/check-phase8-red.sh). Extends the
RefreshTokenStore/AuthCodeStore interfaces with the store seams Task 2's
implementation needs (ByAPITokenIDForUpdate, MarkRotated,
DeleteExpiredCodes, DeleteExpiredRefreshTokens) and updates the framework's
in-memory test double to satisfy them.
- Server.Token: JSON rejection before ParseForm, body-over-query precedence,
Basic-over-form client auth, exact invalid_request/unsupported_grant_type/
invalid_client/invalid_grant bodies, Cache-Control/Pragma on success only
- authenticateClient: public/confidential dispatch, constant-time secret
compare (T-08-SECRET-TIMING)
- exchangeAuthorizationCode: single WithinTx lock/consume/mint/refresh-create
covering code/client/redirect/resource/PKCE binding and single-use replay
(T-08-CODE-REPLAY), sequential and concurrent proofs
- rotateRefreshToken: grant_type=refresh_token dispatches per PHP validity
but is a deliberate invalid_grant placeholder; full rotation is 08-06
- full token_test.go behavior matrix appended alongside the RED anchor
