Verification: Legacy Cleanup

Traceability matrix for Part 1 of Component Preparation. Requirements are defined in requirements.md.

Traceability Matrix

Requirement	Test / Verification Method	Status
REQ-LC-001	`ls src/app/items/ItemTable.tsx` returns “No such file”	pending
REQ-LC-002	`ls src/tests/itemTable.test.tsx` returns “No such file”	pending
REQ-LC-003	`grep -r 'ItemTable' src/tests/items.test.tsx` returns no matches	pending
REQ-LC-004	`grep '@tanstack/react-table' package.json` returns no matches; `grep -r '@tanstack/react-table' src/` returns no matches	pending
REQ-LC-005	Existing `ItemTableAGGrid` tests pass; `grep 'ItemTableAGGrid' src/app/items/page.tsx` confirms import	pending
REQ-LC-006	`npm run lint` exits 0; `npx tsc --noEmit` exits 0; `npx jest --no-coverage --watchAll=false --forceExit` exits 0; `npm run build` exits 0	pending
REQ-LC-007	`grep -A2 'Removed' CHANGELOG.md` shows ItemTable and @tanstack/react-table entries	pending