K3 GET /api/security/configure/lookup — departments with root-to-leaf paths, job titles with their own archetype, teams with member counts, roles, SI-eligible supervisors with whether their applied rights cover the placement's grants (PlacementGrants, PlacementGrantsLoader: team-member role, department, job title, teams as one peer level, closure, never-grantable floor), and colleagues (KamoCollab CP10 Task 6)