test(auth): update api_host test for new q.{region}.amazonaws.com endpoint

feat: add Enterprise Kiro IDE support with unified AWS SSO OIDC format (#43, #45, #48)

fix(auth): use correct AWS SSO OIDC CreateToken API format (#43)

feat(auth): add support for social login SQLite credentials

fix(auth): persist refreshed AWS SSO OIDC tokens back to SQLite (#43)

fix(auth): add graceful degradation for SQLite mode (#14)

refactor: update kiro_gateway naming to kiro

fix(auth): retry SQLite reload on 400 for container token refresh (#14)

fix(auth): reload SQLite credentials before AWS SSO OIDC token refresh (#22)

fix(auth): separate SSO region from API region for AWS SSO OIDC (#16)

fix(auth): don't send scope in AWS SSO OIDC refresh (#14)

feat(auth): add AWS SSO OIDC support for kiro-cli credentials (#12)

feat: Complete Kiro OpenAI Gateway implementation