Epic: Organizations — member search and LinkedIn org integration

[Adron]

Summary

Views/OrganizationsView.xaml covers browse, create, get, update, delete and full member management (list/add/change-role/remove). Five operations remain.

Unimplemented endpoints

Method	Path	Feature
GET	/api/organizations/{id}/users	"Search for users to add as members"
GET	/api/organizations/{id}/linkedin/status	org LinkedIn link state
POST	/api/organizations/{id}/linkedin/sync-pages	sync the org's LinkedIn pages
PUT	/api/organizations/{id}/linkedin/assignments	assign pages
DELETE	/api/organizations/{id}/linkedin/credential	unlink the org credential

Creating an organization is a Subscriber feature; joining one is free (/help/account).

Repo conventions to follow

• Service: one partial class InterlinedApiClient file per domain in InterlinedList/Services/.
• Wire types in InterlinedList/Models/ matching real API JSON.
• ViewModel per view in InterlinedList/ViewModels/ (CommunityToolkit.Mvvm ObservableObject + [RelayCommand]).
• View is a self-contained UserControl in InterlinedList/Views/ that news up its own VM from AppServices.Session.
• Strata tokens only — no colors/fonts/radii outside Resources/Palette.xaml + Theme.*.xaml.
• Read-after-write for any mutating endpoint whose response envelope has not been live-verified.