_CHAR_CONFUSION_RULES: standalone "1" → "I" now skips "1." and "1," Cross-language fallback rule: same lookahead (?![\d.,]) added Fixes: "cross = 1. Kreuz" being converted to "cross = I. Kreuz" in Step 1 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>