Plans 05-01..05-08 cover all CLOUD-01..07 requirements plus SEC-09
(cloud credential cleanup on account deletion). Key design decisions:
API layer owns D-05 token refresh + DB update via _call_cloud_op helper;
backends are stateless signal-raisers. Vitest tests added for frontend
store and SettingsCloudTab. RESEARCH.md open questions resolved.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
curo1305