- Add project_manager to all role dropdowns (UserList filter, create modal, UserDetail edit form)
- Add indigo badge color for project_manager in user list table
- Expose pm_client_ids in UserResponse schema and all admin user endpoints
- Add pm_client_ids to frontend User type
- Add UserAssignmentsPanel to UserDetail sidebar: PM users see client toggle list; other roles see client → team membership picker
- Add flexible hooks (useTeamsForClient, useAssignPMAny, useRemovePMAny, useAddTeamMemberAny, useRemoveTeamMemberAny)
- Fix useClient guard against literal "undefined" string causing 404 requests
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
