Words like "probieren)" or "Englisch)" were incorrectly flagged as
gutter OCR errors because the closing parenthesis wasn't stripped
before dictionary lookup. The spellchecker then suggested "probierend"
(replacing ) with d, edit distance 1).
Two fixes:
1. Strip trailing/leading parentheses in _try_spell_fix before checking
if the bare word is valid — skip correction if it is
2. Add )( to the rstrip characters in the analysis phase so
"probieren)" becomes "probieren" for the known-word check
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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