Summary

Make the org chart a fully interactive management interface for the company's organizational structure. Currently the org chart is read-only and renders an empty canvas when no departments exist (fix in progress on fix/fix-org-chart). This issue covers the full interactive experience.

Scope

Backend -- Department/Team CRUD endpoints

The DepartmentController is currently read-only (list_departments, get_department). Add:

• POST /departments -- create department
• PUT /departments/{name} -- update department (rename, change head, budget_percent, policies)
• DELETE /departments/{name} -- delete department (with validation: no orphaned agents)
• POST /departments/{name}/teams -- add team to department
• PUT /departments/{name}/teams/{team_name} -- update team (rename, change lead)
• DELETE /departments/{name}/teams/{team_name} -- remove team (with member reassignment)

Frontend -- Detail pages

• Department detail page (/org-chart/departments/:name) -- shows department info, teams, head, budget allocation, reporting lines, policies
• Team detail page (/org-chart/departments/:deptName/teams/:teamName) -- shows team info, lead, members with status

Frontend -- Org chart interactivity

• Context menu on right-click for all node types (department: edit/delete/add team; team: edit/delete/add member; agent: view profile/reassign)
• Double-click to open detail page
• Click navigates to detail page (department detail, team detail, or agent profile)
• "Add Department" button in PageHeader actions slot
• Drag-and-drop to reassign agents between teams (stretch goal)

Frontend -- Agents page department filtering

• Add department filter to AgentProfilesPage (query param ?department=engineering)
• Org chart department/team click navigates to filtered agents view until detail pages exist

Related

• feat: implement company builder interactive wizard (UI + API) #238 -- company builder wizard (creates initial department structure)
• fix/fix-org-chart branch -- empty state fix, fitView safety net, basic node click handling

Design Spec Reference

• Organization page: docs/design/organization.md
• Operations page (dashboard): docs/design/operations.md