OPENAI_API_KEY=sk-...
ANTHROPIC_API_KEY=sk-ant-...         # optional, for Claude as LLM
ELEVENLABS_API_KEY=sk_your_elevenlabs_key_here  # optional, enables ElevenLabs STT + TTS
GITHUB_TOKEN=ghp_...                 # optional, increases API rate limits
HUGGINGFACE_TOKEN=hf_...             # optional, for private models
UNPAYWALL_EMAIL=research@example.org # required only for unpaywall_download.py

CHROMADB_PATH=./chromadb
OPENAI_EMBEDDING_MODEL=text-embedding-3-large
LLM_MODEL=gpt-5.2-2025-12-11

# ElevenLabs TTS settings (/ws/panel)
ELEVENLABS_VOICE=Alice
ELEVENLABS_VOICE_ID=Xb7hH8MSUJpSbSDYk0k2  # overrides name lookup if set
ELEVENLABS_TTS_MODEL=eleven_turbo_v2
ELEVENLABS_TTS_SPEED=1.2

SILENCE_TIMEOUT=3.0

#   VOICES = [
#       ("Alice",   "Xb7hH8MSUJpSbSDYk0k2"),
#       ("Sarah",   "EXAVITQu4vr4xnSDxMaL"),
#       ("Matilda", "XrExE9yKIg1WjnnlVkGX"),
#       ("Laura",   "FGY2WhTYpPnrIDTdsKH5"),
#       ("Jessica", "cgSgspJ2msm6clMCkdW9"),
#       ("Lily",    "pFZP5JQG7iQjIQuC4Bku"),
#   ]