Query\Builder only produces an aggregation when groupBy or an aggregate function is set. The Filament hooks need to add $lookup, $addFields and $match stages, plus a sort on a computed field, to an otherwise ordinary Eloquent query that Filament later paginates.

Add to Query\Builder:

• storage for extra pipeline stages, a computed-field sort, and temporary fields to $unset
• in toMql(), when stages are present, fold the find command into aggregate ($match wheres, stages, $sort with computed sorts first, $skip/$limit, projection, $unset)
• the same for countDocuments (ending in $count) so paginate() totals include a $match added by a hook
• insert the stages after the leading $match of an existing aggregate command

No public API change for users; only the hooks call this.

Filament features this enables: relationship column sorting, aggregate column sorting, aggregate filtering and table pagination on the resulting queries. Reference implementation: the demo's ZooMongoQueryBuilder (Pauline has the demo).