📖About

Leo and Noah (and their teams) still show flat under Transformation. Add a sub_department field to agents, assign Migration (Noah/Gimli/Thorin) and Strategy (Leo/Bilbo/Obi-Wan); Odin stays dept-level. Reflect sub_department in the org chart node tag and group agents under their sub-department in the Departments tab.

✅Success criteria

• Leo shows under Strategy and Noah under Migration in both the chart tag and Departments tab (must_have)