.env.example

# =============================================================================
# Knowledge Base Environment Configuration
# =============================================================================

# REQUIRED - Must be set in production (no defaults for security)
JWT_SECRET=your-secure-256-bit-secret-here

# AES-256 encryption key for API keys stored in the database.
# Generate with: python -c "import secrets; print(secrets.token_hex(32))"
# WARNING: changing this key will invalidate all saved API keys.
ENCRYPTION_KEY=your-64-char-hex-key-here

# Database - SQLite for development, use PostgreSQL for production
DATABASE_URL=sqlite:///data_storage/knowledge_base.db

# CORS - Comma-separated list of allowed origins (no wildcards in production)
CORS_ORIGINS=http://localhost:3000,http://localhost:5173

# Logging
LOG_LEVEL=INFO
DEBUG=false

# Rate Limiting (requests per minute per IP)
RATE_LIMIT_PER_MINUTE=60

# Groq API - Set via Settings page or here
# GROQ_API_KEY=your-groq-api-key
# GROQ_MODEL=llama-3.3-70b-versatile

# Web Search
ENABLE_WEB_SEARCH=true

# FAISS Quantization — int8 scalar quantizer (4x memory reduction, ~1% recall loss)
# Set to false to use raw float32 IndexFlatL2
FAISS_QUANTIZE=true
FAISS_QUANTIZE_TYPE=sq8   # sq8 = 8-bit (recommended) | sq4 = 4-bit (more aggressive)

# Celery — async document indexing workers
# Leave both empty to use FastAPI BackgroundTasks (no Redis needed for local dev).
# Set to enable persistent task queue with automatic retry on failure.
CELERY_BROKER_URL=redis://localhost:6379/0
CELERY_RESULT_BACKEND=redis://localhost:6379/0