Fix: 3 pre-existing TaskCard Jest test failures on main

[manucompiles]

Found during #79: 3 of 17 TaskCard.test.tsx tests fail on main (verified on main, unrelated to the journaling branch). getByRole lookups fail (multiple elements / missing role) around 'buy groceries' rows - likely drifted after a TaskCard markup change.

Repro: npx jest src/tests/TaskCard.test.tsx on main.