SnowflakeAuthUtils

Create JWT token for REST API authentication.

Get REST API headers with authentication.

Supports multiple authentication methods in priority order:

1. Personal Access Token (PAT)
2. Key-pair authentication (JWT)
3. Session-based token extraction (fallback)

Build the REST API URL for Snowflake Cortex Complete.

Get effective timeout respecting Snowflake parameter hierarchy.

This follows Snowflake's official parameter management best practices:

1. Check session STATEMENT_TIMEOUT_IN_SECONDS parameter first
2. Fall back to tool-specific request_timeout