v0.10.0 - Transcription Resumability

Added

• Transcription resumability: Pipeline now tracks per-part transcription in SQLite, enabling resumption after partial failures without re-transcribing completed parts.
• Transcripts table: New database table stores transcription segments per audio part.
• StateManager methods: Added store_transcript(), get_transcripts(), and get_transcribed_part_indices() methods.

Benefits

• Saves money: If transcription fails at part 8/10, next run skips parts 1-7 and only transcribes 8-10, saving Groq/STT budget.
• Enables re-chunking: Raw transcript storage infrastructure ready for future re-chunking without re-STT.
• Resilient: Each part is persisted immediately after successful transcription.

Fixed

• Timestamp alignment: Stored timestamps are now adjusted with cumulative offset to ensure correct time alignment after resume.