feat(admin-users): dedicated admin profile drawer with own tabs

The first pass had admin/users sharing the address book profile partial,
which surfaced Contact/Address/Organization/About tabs that ignored the
admin-specific context. Separates the admin quick-view so it mirrors the
edit-page tab structure while staying read-only.

- `UserProfileViewService::buildAdminProfile()` extends the base profile
  with `admin_extras` (active, email_verified_at, last_login_at,
  last_login_provider, created, modified).
- `templates/partials/app-admin-user-profile.phtml` is the admin-only
  render path: Master data · Organization · Security · About. Status
  badge under the name; timestamps locale-formatted.
- `pages/admin/users/view-fragment($id).php` / `(none).phtml` switched
  to the admin service method + partial.
- Drawer CSS aligns the aside with the main section's inline padding so
  the content strip does not visually step in/out.

Address book is unchanged — still uses `buildProfile()` + the base
partial. Two i18n keys added (`Login provider`).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

i18n/default_de.json

@@ -1,6 +1,7 @@
 {
   "Login": "Login",
   "Login credentials": "Mit Zugangsdaten oder SSO anmelden",
+  "Login provider": "Login-Anbieter",
   "Register": "Registrieren",
   "Password": "Passwort",
   "Or": "Oder",

i18n/default_en.json

@@ -1,6 +1,7 @@
 {
   "Login": "Login",
   "Login credentials": "Login credentials",
+  "Login provider": "Login provider",
   "Register": "Register",
   "Password": "Password",
   "Or": "Or",