## Summary - Adds a privilege check to workspace-level impersonation: non-admin users can no longer impersonate users who have `canAccessFullAdminPanel` or `canImpersonate` flags - Adds the same check in JWT token validation as defense-in-depth (invalidates existing impersonation sessions targeting admin users) - Adds 3 unit tests covering: non-admin → admin blocked, non-admin → canImpersonate blocked, admin → admin allowed ## Test plan - [x] Unit tests pass (14/14 in `impersonation.service.spec.ts`) - [x] Typecheck passes - [ ] Verify workspace-level impersonation of regular users still works normally - [ ] Verify server-level impersonation by admins is unaffected 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>