Renders large editor lists 200 rows at a time so they stay responsive on big maps. The States editor in particular was effectively unusable at 1k+ states because it renders a coat-of-arms per row; it now renders the COA only for the current page.

What changed

• Shared pagination/sort helpers in editors.js: getActiveSort, sortDataByActiveHeader, getEditorPage, renderEditorPagination, bindEditorSortReset.
• Pagination added to the Burgs, States, Cultures, Religions, Rivers, and Routes overviews/editors.
• Each one sorts the full filtered set (so sorting spans all pages, an upgrade over the old DOM-only applySorting), computes footer totals/averages over the full set, then renders only the current page and draws Page n of N controls in the footer.
• CSV exports operate over the full set (some previously read the rendered DOM, which would now be only the visible page).
• Search and state/culture filters (burgs) and column sort reset to page 1 and filter/sort across all pages; lazily-computed route name/length are populated for the full set so sort/footer/CSV stay correct.
• Manual re-assignment map-clicks, the culture-center hover, and randomizeStatesExpansion are guarded against rows that aren't on the current page.
• The footer pager fills the table-driven width without contributing to the dialog's fit-content width, so narrow dialogs (e.g. Rivers) don't get an empty gutter.

Notes

• No new HTML or CSS — the pager UI is created entirely in JS (page size 200).
• Seven files touched; all were identical to current master before this change.

Test plan

• Open each editor on a 1k+ map: paginates at 200; prev/next/jump/clamp work; pager hidden when the list fits one page.
• Column sort resets to page 1 and orders the full set (top of page 1 is the global max/min).
• Footer totals/averages stable across pages; percentage mode (states/cultures/religions) correct on a later page.
• Burgs: state/culture filters + search reset to page 1 and apply across all pages; "regenerate names" applies to the full filtered set.
• CSV export from a non-first page contains all rows.
• States manual re-assignment + randomize produce no console errors.