# OpenRouter API key (REQUIRED)
OPENROUTER_API_KEY=your_api_key_here

# Server configuration
PORT=3002
NODE_ENV=production

# Optional: Override default models
# HIGH_COST_MODELS=perplexity/sonar-deep-research,perplexity/sonar-pro,perplexity/sonar-reasoning-pro,openai/gpt-4o-search-preview
# LOW_COST_MODELS=perplexity/sonar-reasoning,openai/gpt-4o-mini-search-preview,google/gemini-2.0-flash-001

# Database and caching configuration
# PGLITE_DATA_DIR=./researchAgentDB      # Directory for PGLite database files in Node.js
# CACHE_TTL_SECONDS=3600                 # Cache time-to-live in seconds (default: 1 hour)
# PGLITE_DATABASE_URL=idb://my-database  # Override auto-detected database URL (idb:// for browser, file:// for Node.js)
# PGLITE_RELAXED_DURABILITY=true         # Enable relaxed durability for better performance
# PGLITE_MAX_RETRY_ATTEMPTS=3            # Maximum retry attempts for database operations 
# PGLITE_RETRY_DELAY_BASE_MS=200         # Base delay (ms) for exponential backoff during retries
# PGLITE_ALLOW_IN_MEMORY_FALLBACK=true   # Allow fallback to in-memory database if persistent storage fails