`list_meta` orders by `(name, environment_scope)` — a group secret name
can carry several env-scoped rows — but the cursor encoded only `name`
and paginated with `name > $cursor`. When a name's scopes straddled a
page boundary, the remaining scope rows were silently skipped from the
admin listing. Switch to a composite `(name, environment_scope)` keyset
(base64url of `name \x1f scope`) and a Postgres row-comparison predicate.
App secrets (single `*` scope per name) were unaffected; group secrets
with multi-scope names now page completely. Found in final branch review.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>