1. Semantic example matching: instead of attaching example sentences
to the immediately preceding entry, find the vocab entry whose
English word(s) appear in the example. "a broken arm" → matches
"broken" via word overlap, not "egg/Ei". Uses stem matching for
word form variants (break/broken share stem "bro").
2. Cell padding: add 8px padding to each cell region so words at
column/row edges don't get clipped by OCR (fixes "er wollte"
missing at cell boundaries).
3. Treat very short DE text (≤2 chars) as OCR noise, not real
translation — prevents false positives in example detection.
All fixes are generic and deterministic.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
010616be5a