The comment block rewritten by the last commit claimed the options flow
validates that a saved token is non-empty (the user-facing guard). That
is false: options_flow.py treats an EMPTY token as valid ("not configured
yet") and only rejects malformed values (padded / whitespace-only /
non-string), pinned by test_options_flow.py
(test_options_flow_api_section_defaults_saved asserts a bare submit saves
CONF_PANEL_TOKEN == ""; test_options_flow_panel_token_validation
documents the empty-token-is-valid contract).
Comment-only correction, no code or test changes: the clause now says the
options flow accepts an empty token and the actual non-emptiness guard is
enforced at NestQuestApiClient construction.