Add comprehensive suffix reference (diminutives, augmentatives, verb
endings, noun/adjective-forming, adverbs, pejoratives) as grammar note
#21 under Word Building category.
Refactor grammar detail rendering to group paragraphs with their
examples into visual cards, replacing the flat wall-of-text layout.
Suffix entries get pill-styled labels with compact inline examples.
Bump courseDataVersion to 5.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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