- docs/casdoor-auth.md: addresses and credentials (Casdoor console
admin/123, seeded users), in-page login flow, status-code table, the
User/Organization/Role/Permission/Application model, the 9 failure
scenarios with debug steps, Test 1-6 results, 23-item checklist, and how
to manage Casdoor (console, seeding, first-admin bootstrap)
- README: replace the 'no authentication' and 'Casdoor not seeded' notes
with the current login flow, developer-mode toggle and a link to the
auth guide
