## Problem
On a record **show page**, prev/next navigation fails with toasts like:
```
Invalid filter : Operator "lt" is not valid for this "severity" SELECT field
```
…but only when the record is reached via in-app navigation from an index
view sorted by a SELECT field (a hard reload is clean).
## Root cause
The record show page paginates with **keyset (cursor) pagination**.
`useRecordShowPagePagination` builds `before`/`after` filters via
`computeCursorArgFilter`, which emits `{ field: { gt|lt: value } }` for
**every** field in the parent view's `orderBy`, regardless of type.
When a view is sorted by a **SELECT** field (e.g. the *All Bugs* view
sorts by `severity`), the keyset filter becomes `{ severity: { gt:
"HIGH" } }` / `{ severity: { lt: "HIGH" } }`. SELECT/RATING fields use
`ENUM_FILTER_OPERATORS` (`eq, neq, in, containsAny, is, isEmptyArray`) —
no ordering operators — so filter validation rejects them, breaking both
the neighbour queries and the rank-in-view ("X of Y") count query. A
hard reload has no parent-view `orderBy`, so neighbour queries are
skipped → no error.
This isn't a technical limitation: the column is comparable, `ORDER BY
severity` works, and the backend already emits the same comparison for
its own cursor path (`buildCursorWhereCondition`) — that path just
bypasses the user-filter allowlist. Ordering operators were omitted from
`ENUM_FILTER_OPERATORS` because they aren't meaningful *user* filters
for categorical fields, but keyset pagination legitimately needs them.
## Fix
Add `gt/gte/lt/lte` to `ENUM_FILTER_OPERATORS`, so SELECT/RATING keyset
filters are accepted — exactly as `UUID_FILTER_OPERATORS` already
carries these operators for the `id` cursor tiebreaker. The filter UI
never offers these operands for SELECT, so this only enables the
keyset/cursor use case.
## Tests
- `get-operators-for-field-type.util.spec.ts`: SELECT/RATING now include
`gt/gte/lt/lte`.
- `validate-operator-for-field-type-or-throw.util.spec.ts`: regression —
ordering operators on a SELECT field no longer throw.
Charles Bochet
050f7dcf85