- caption_aligner: lower match ratio 0.5→0.35, widen search window 60→150, add time-based cursor fallback on miss
- gemini.py: explicit 'MUST use glossary terms' requirement in translate_vtt prompt; source_has_ad prompt now instructs not to include AD narration in captions
- ingest_and_ai: load glossary for source language and pass to extract_accessibility
- render_accessible_video: handle source_has_ad=True via caption-embed path (ffmpeg subtitle inject, no AD pipeline)
- translate_and_synthesize: track failed languages, write translation_errors to DB, add exc_info to error log
- vtt.py: expand _FILLER_PATTERNS to nl/pt/pl/uk/ru, widen EN/ES/FR/DE/IT lists
- gemini_ingestion.md: strengthen line:0% placement rule, expand disfluency examples per language
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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