- Created validateEnv utility for comprehensive environment validation
- Validates required variables: JWT_SECRET, COUCHDB_URL, COUCHDB_DB_NAME
- Validates optional variables with defaults: NODE_ENV, PORT, FRONTEND_URL
- Enforces JWT_SECRET minimum length of 32 characters for security
- Validates URL formats for COUCHDB_URL and FRONTEND_URL
- Validates CouchDB database name format
- Warns about missing optional services in production
- Integrated validation into server startup
- Server exits with clear error messages if configuration is invalid
- Logs environment configuration on startup (masks sensitive values)
- Updated test setup
- Set proper 32+ character JWT_SECRET for tests
- Added all required environment variables for validation
Security Benefits:
- Prevents server from starting with weak or missing credentials
- Catches configuration errors early before database connections
- Provides clear guidance on required variables
- Protects against default/example credentials in production
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Co-Authored-By: AI Assistant <noreply@ai-assistant.com>
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