Benjamin Admin 0f0bbc3dc0 Switch AudioButton to Piper TTS (Thorsten/Lessac voices) ...

AudioButton now tries Piper TTS via /api/vocabulary/tts endpoint
first, falls back to Browser Web Speech API if unavailable.

Backend: New GET /api/vocabulary/tts?text=...&lang=de endpoint.
audio_service.py: Fixed presigned URL flow for MinIO download.

This gives the same high-quality voice as the Investor Agent
in the pitch deck (Thorsten DE / Lessac EN, MIT license).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-26 23:17:39 +02:00

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