Components: Listing pages (tables, filters, pagination) #17

REQUIREMENTS §22 (Listing pages), §25.6, §25.7, R16.4.

• Table (DataTable, TanStack Table v9; mobile cards)
• Editable data grid
• List view
• Grid view
• Kanban board
• Tree view (React Aria)
• Sortable list
• View switcher
• Column visibility
• Filter panel (§25.7)
• Active filter chips
• Filter submit
• Filter tabs
• Search box
• Search results
• Per page
• Bulk actions bar
• Export menu
• Pagination (Laravel shapes)
• Load more
• Empty state
• Row actions
• Record actions menu
• Filter condition builder (@javaabu/onu/query-builder)
• Drag-and-drop row reordering
• URL-state helper (useListingState)

Also ListingPage, the full §25.6 index page. Merged into claude/amazing-cerf-htnpm8. 179 tests; ~99% lines / 93% branches.

Follow-ups:

• Figma components + Code Connect (Figma kit & token sync #29)
• RecordActionsMenu uses a media query; switch to a container query
• Editable grid: hide the active-cell ring when the grid isn't focused