Changelog

v1.1.2...v1.2.0

Add voice selection and per-chapter 30s preview to TTS page (4c5cb0d)
Add ElevenLabs and OpenAI TTS provider support (e24f974)
Add listModels/listVoices to TTS provider interface (f5b724d)
Add download concurrency limit with DB-based queue and auto-resume (7219c29)
Enhance downloader with pause/resume, speed/ETA, batch mode, and converting status (b0a8eb8)
Redesign downloads page with card layout, filters, and fix global border color (a0e6705)
Add confirmation dialogs with file deletion option for download delete/clear (e336e50)

Remove unused imports flagged by eslint (bf6aeaa)
Persist service changes to electron-store immediately on save/remove (de272ee)
Include empty options object when constructing service for TTS preview (7f1b231)
Display TTS preview error message in UI instead of only logging to console (750fdfd)
Refetch downloads from DB when progress reaches 100% to get final status (9632dde)

Redesign episode creation flow with unified entry point (0a1be66)
Introduce Service abstraction for TTS and transcription (80b9229)
Separate provider/engine in ServiceConfig and centralize engine metadata (3a043e4)
Make tts.preview accept engine+credentials instead of serviceId (ca4d6e9)