Fix strict handwriting scoring

Complete KK phonetics for all teaching words

Fix English word quality and KK phonetics

Correct English meanings and validate quiz content

Make handwriting scoring evidence based

Add automatic MOE dictionary sync and multi-character lookup

Improve Chinese dictionary illustrations and graded idioms

Fix grade sync, dictionary, OCR build, and route stability

Keep Chinese learning inside Chenguang

Optimize Chinese learning for grades one through six

Optimize English learning zones and static navigation

Improve English topic learning flow

Privacy-safe anonymous release