The superadmin panel had backend CRUD for users/orgs (internal/api/users.go,
orgs.go) but no UI. Add two tabs to panel/src/App.vue:
- Users: create form (email/password/role/org), list with role + org badges,
inline editor (email/role/org/verified/password reset), and delete. Self-role
change and self-delete are suppressed to mirror the server-side guards.
- Organizations: create, inline rename, and delete, with client-derived member
counts; delete is disabled while an org still has members.
PocketBase validation errors are unwrapped into a readable line via a shared
apiError() helper. Rebuilds the embedded panel bundle (dist).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
