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Characters not in the alignment model's vocabulary (digits, symbols, foreign script) were excluded from CTC alignment and got no timestamps. Fix: extend the emission matrix with a wildcard column (max non-blank score per frame) so unknown chars participate in alignment via the existing get_trellis/backtrack — no changes to the CTC internals. Interpolation fallback fills any remaining gaps as a safety net. Unlike PR #986, this does not rewrite get_trellis or backtrack, so it avoids the regression that caused #1220. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Reproduces the exact reported bug: '4,9' embedded in text gets no start/end/score because digits and commas are not in the alignment model dictionary. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add pytest to optional dev dependencies and create a dedicated tests.yml workflow to run pytest across Python 3.10-3.13. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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