.env.example

# Copy to .env for local dev. Never commit .env (gitignored).
# On the HF Space, set these in Settings > Variables and secrets.

# --- App ---
APP_ENV=dev                      # dev | prod
LOG_LEVEL=INFO

# --- Languages (per-learner override comes in M3) ---
DEFAULT_SOURCE_LANG=fr
DEFAULT_TARGET_LANG=en

# --- LLM (provider-agnostic via OpenAI-compatible endpoints, see ADR 0002) ---
LLM_PROVIDER=fake                # fake | gemini | openai | mistral | ollama
LLM_MODEL=gemini-2.5-flash       # safe default; check AI Studio for the current free-tier flash (e.g. gemini-3-flash)
LLM_API_KEY=                     # Gemini: https://aistudio.google.com/apikey
                                 # NB: Gemini free tier => prompts may be used for training. Demo data only.
# LLM_BASE_URL=                  # override the per-provider preset endpoint if needed
LLM_TIMEOUT_S=30

# --- CEFR classifier (M1) ---
# CEFR_MODEL_PATH=models/cefr/en_chunked_weighted/onnx-int8   # local dev
# CEFR_MODEL_ID=<hf-username>/polyglot-tutor-cefr-onnx        # Space (HF_TOKEN if private)
# CACHE_DIR=.cache/tutor                                      # LLM-product cache

# --- ASR / TTS / storage (real implementations land in M2 / M3) ---
ASR_PROVIDER=fake
TTS_PROVIDER=fake
STORAGE_BACKEND=memory

# --- Gradio ---
HOST=0.0.0.0
PORT=7860
GRADIO_AUTH_USERNAME=            # set both to enable basic auth (recruiter demo account)
GRADIO_AUTH_PASSWORD=