v0.19.0

[0.19.0] -- 2026-06-02

Fixed

• Live transcription text duplication (Issue #2) — Two-buffer model in TranscriptStore (_words + _live_phrase_words) replaces wholesale on each re-transcription pass instead of appending, eliminating duplicate text from sliding window overlap. set_live_phrase_words / commit_live_phrase provide a unified replace path for both is_final and re-transcription segments
• Post-processing and scrub broken (Issue #11) — M019 changed transcribe_chunk() to return TranscriptionSuccess | TranscriptionError but post_processor, scrub, and benchmark still iterated the raw return. All callers now unwrap the typed result
• Speaker identity matching not resolving (Issue #12) — Post-processing diarization runs via subprocess; JSON round-trip produces int speaker labels in segments but string keys in matches dict. speaker_label_for() now tries both exact match and str() coercion before falling back to SPK_N default
• Post-processor speaker_matches metadata — Now built from the diarization result's VoiceSignatureStore identity matches instead of carrying forward stale realtime transcript data
• Transcript save missing live buffer — _get_segments_internal() and finalizer now include live phrase buffer so saved transcripts contain full text
• run.bat Windows Store python stub — Switched python → py launcher to bypass Windows Store AppInstaller redirector

Changed

• Code Review Audit Remediation (Issue #8) — 46 verified findings from GPT-5.5 code review triaged and fixed: atomic_write() utility for crash-safe file operations, TranscriptionResult typed return from transcribe_chunk(), thread safety fixes in TranscriptStore, resource lifecycle cleanup, exception handling hardening, and lint cleanup across 8 modules