Add AETHERA_ prefixed env vars for server configuration: - AETHERA_DATA_DIR: data directory path - AETHERA_LISTEN: listen address - AETHERA_PORT: listen port Env vars take precedence over defaults but CLI flags override both.
Add AETHERA_ prefixed env vars for server configuration: - AETHERA_DATA_DIR: data directory path - AETHERA_LISTEN: listen address - AETHERA_PORT: listen port Env vars take precedence over defaults but CLI flags override both.