Import Kiro accounts authenticated via Microsoft Entra/365 SSO using CLIProxyAPI JSON. Adds external_idp refresh path (form-encoded OAuth2, Microsoft login host allowlist), TokenType: EXTERNAL_IDP header for runtime and usage/quota requests, dashboard import UI, and unit tests. Scoped to authMethod === "external_idp"; existing Kiro auth unchanged. Co-authored-by: Cursor <cursoragent@cursor.com>