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/projects/host-projects.test.ts

@@ -9,6 +9,7 @@ import {
 
 function project(): HostProjectListItem {
   return {
+    viewKey: "view:acme/app",
     projectKey: "remote:github.com/acme/app",
     projectName: "acme/app",
     projectKind: "git",
@@ -57,7 +58,7 @@ describe("host project lookups", () => {
         sourceDirectory: "/repo/a",
       }),
     ).toMatchObject({
-      projectKey: "prj_a",
+      projectKey: null,
       hosts: [{ serverId: "host-a", projectId: "prj_a" }],
     });
   });