docs: gokapi RedirectUrl + default_creds follow-ups

REPORT.md

@@ -41,7 +41,14 @@ fix is impossible on this version, so this seed mechanism is the equivalent that
 
 Final demo: 25 containers, 0 unhealthy; gokapi healthy. Admin credentials stored out-of-band.
 
-## Known minor / optional follow-ups
-- Gokapi's `RedirectUrl` (bare `/`) is the upstream default (Gokapi's GitHub); could be set to the
-  app's own `/login` for nicer customer UX (one-line seed change; future deploys only).
+## Follow-ups applied
+- Gokapi's `RedirectUrl` repointed from the upstream default (Gokapi's GitHub) → `https://${SUBDOMAIN}.${DOMAIN}/admin`,
+  so the bare root and the controller's "Megnyitás" link reach the Gokapi login instead of GitHub
+  (applied to live + seed; verified in-browser: `/` → `/admin` → login).
+- `app_info.default_creds` added (shows admin username on the app-info page); `first_steps` updated for
+  the headless flow.
+
+## Known minor / optional
 - Seed is tied to Gokapi v1.9.6's `config.json` schema — re-capture if the image is bumped.
+- The controller's "Megnyitás" link is always the bare subdomain root (no per-app path support); apps
+  whose UI isn't at `/` are handled by pointing their index redirect at the right path (as done here).