refactor(wells, contacts): move list pages onto shadcn DataTable - #347

Stacked on #344 — targets BDMS-1133, so the diff here is only the Wells/Contacts refactor.

Replaces the MUI DataGrid on the Wells and Contacts lists with a shared shadcn table built on TanStack Table, following the denser table style #344 introduced for Projects.

What's here

New src/components/DataTable (TanStack Table v8 over shadcn ui/table)

• DataTable — rows, loading skeletons, empty state, row href with modifier-click new-window, selected-row state
• DataTableColumnHeader — tri-state sort plus a filter popover: text, single-select, and numeric/date comparisons (= ≥ ≤ > <)
• DataTableViewOptions — column visibility menu (replaces the DataGrid "Columns" button)
• DataTableToolbar — search input, dismissible filter chips, record count
• DataTablePagination — page size select and pager
• useRefineDataTable — bridges Refine's useTable server state (paging, sorting, filtering) to TanStack's manual mode, hides permanent filters from the chips, and keeps the PostHog event names the DataGrid pages emitted (<prefix>_sorted, _filter_applied, _column_visibility_changed)

Pages

• Wells — same columns, header tooltips, project filter chip, server search, Batch Field Sheets and CSV export. Now defaults to newest first.
• Contacts — rows select instead of navigating, so the email, phone and address cards open below the table; the name cell links through to the contact page.

Supporting

• ui/popover.tsx added from the shadcn registry
• ListPageShell holds the breadcrumb/title/header-button chrome the DataTable pages share
• Row navigation helpers moved next to the DataTable and re-exported from ListPage
• New dependency: @tanstack/react-table@^8.21.3

Notes for review

• Default sort is created_at desc. The ask was "last updated first", but ThingResponse exposes no update timestamp — created_at is the closest field. Easy to switch if the API accepts sort=updated_at.
• Density toggle is not carried over — the shadcn table is already compact.
• Sorting or changing a filter resets to page 1 (the DataGrid kept the page).
• useListPageDataGridAnalytics is now unused. Left in place rather than editing src/hooks/index.ts, which has unrelated in-flight work; worth deleting in a follow-up.

Verification

Against the dev API: wells list loads newest-first (GET /thing/water-well?...&sort=created_at&order=desc), a name filter narrows to 2 records and shows a dismissible chip, contacts paginate server-side through 2,273 records, header clicks issue sorted requests, and the contact detail cards populate on row select. No console errors.

tsc and biome check are clean. 14 new tests cover the DataTable renderer and the Refine/TanStack bridge; the pre-existing contract-test failures need the prism mock server on :4010.

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