- Remove the Nominativ level and drop nominative-case testing from mixed/
possessive/pronoun levels (nominative kept only in reference charts)
- Add persistent hide/show toggles on the two giveaway hint lines in
practice (noun gender, case/preposition info); state persists in localStorage
- De-spoil "Wechsel im Kontext": remove motion/location hint from answer
buttons; put sentence translation + preposition meaning behind a toggle
- Add a 7-day practice-history dot strip beside the streak counter
- Extend engine + tests (61 vitest tests)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>