Covers weak/mixed/strong declension for accusative adjectives. Learning
record captures the two real misconceptions found: reaching for -es after
a der-word (only valid in mixed/strong declension), and E-Mail's gender
missed a second time despite an earlier correction.
Targets the top gaps from the last diagnostic session — weil/dass/ob/wenn
verb-final order, multi-verb endings (modal + infinitive, Perfekt), a
dedicated ob vs. obwohl distinction, and accusative endings woven into
every drill sentence.
