Shared helpers for table sorting, pagination, and basic search filters across web UIs.

This namespace centralizes parsing of table-related query parameters so that
all modules use the same semantics for sorting and paging. It also provides
small helpers for generic search/filter parameters that feature modules can
interpret according to their own needs.

TableQuery shape:
{:sort      :name        ; keyword column identifier (or default)
 :dir       :asc         ; :asc or :desc
 :page      1            ; 1-based page index
 :page-size 20           ; items per page
 :offset    0            ; derived from page/page-size
 :limit     20}         ; derived from page-size