Fix mapper JavaScript lint errors

[CaseyLabs]

Summary

• Fix mapper JavaScript lint violations in admin static assets.
• Keep this cleanup separate from the admin user API hardening stack.

Stack

1. This PR: mapper JavaScript lint cleanup
2. security/user-admin-clone-helpers: domain clone helpers
3. security/user-admin-api: admin user mutation hardening

Validation

• Not run after branch split; changes were cherry-picked from the existing draft branch.