useCompanyController.handleOnboardingDone() pre-selected the newly-created
lead agent via setSelectedAgentId(). OrganizationSections.tsx uses the same
`selectedAgentId` state as the Edit modal open flag (`open={!!selectedAgent}`),
so the first visit to the Team section after onboarding auto-opened
`Edit: CEO` with no user action.
Removed the pre-select. Roster highlight on navigation still works via
the explicit `setSelectedAgentId(entityId)` path in the navigation slice;
the Edit modal now only opens when the user clicks a roster row, matching
user expectation.
Scope note: this does not yet split `selectedAgentId` into separate
`focusedAgentId` + `editingAgentId` states; clicking a roster row still
opens the editor immediately. That UX split belongs to the Jony/Jobs
Team-page audit pass, not this single-line fix.