Keep selected projects when switching hosts (#2700)

* fix(app): preserve project selection across hosts

Rendered project identity and persisted equivalence were conflated after duplicate-project handling. Keep them separate so host changes resolve selectable equivalents deterministically without resetting legacy sidebar identity.

* fix(app): restore selected clone after host round trip

Keep manual origin and current destination placements separately so switching back restores the chosen checkout while archive gaps preserve the active host selection.

* fix(app): key status icons by project view

* fix(app): preserve origin during archive gaps

packages/app/src/screens/new-workspace-initial-context.test.ts

@@ -8,6 +8,7 @@ import {
 
 function projectFor(serverId: string, key = "project"): HostProjectListItem {
   return {
+    viewKey: `view:${serverId}:${key}`,
     projectKey: key,
     projectName: key,
     projectKind: "git",