- Change default OPENVIKING_ACCOUNT from 'root' to 'default'
- Add account and user config options to get_config_schema()
- Add session creation in initialize()
- Add reset_session() method
- Update docstring to reflect new default
This is a breaking change: existing users who relied on the 'root' account will need to either:
1. Set OPENVIKING_ACCOUNT=root in their environment, or
2. Migrate their data to the 'default' account
Future release will add support for OPENVIKING_ACCOUNT and OPENVIKING_USER in setup when API key is provided.
update desc for key setup