Server.PendingRequest/IssueCode/DenyPending port PHP
OAuthConsentController::pendingFor/OAuthCodeManager::issueCode as
app-agnostic protocol operations (08-CONTEXT.md D-08): every missing,
foreign-owner, used, expired, or already-issued pending row collapses to
the identical ErrPendingNotFound (T-08-CROSS-USER/T-08-REQUEST-LEAK).
IssueCode trusts the caller's already-computed granted scopes/collection
ids and returns the ordered redirect_to URL built through the existing
RFC 3986 encoder.
AuthCodeStore.MarkIssued gains scopes/collectionIDs/expiresAt parameters
(PHP's issueCode overwrites all three, not just code_hash/user_id) and
ClientStore gains MarkConsented, both required for D-08's consented_at
stamping and server-derived grant persistence. Options gains CodeTTL
(600s PHP-parity default) following the established Options-extension
pattern.
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