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/utils/sidebar-project-row-model.test.ts

@@ -6,6 +6,7 @@ import type {
 import {
   buildSidebarProjectRowModel,
   resolveSidebarProjectIconTarget,
+  resolveSidebarProjectIconTargets,
   resolveSidebarProjectLocalPath,
 } from "./sidebar-project-row-model";
 
@@ -14,7 +15,7 @@ function workspace(overrides: Partial<SidebarWorkspaceEntry> = {}): SidebarWorks
     workspaceKey: "srv:ws-root",
     serverId: "srv",
     workspaceId: "ws-root",
-    projectKey: "project-1",
+    projectViewKey: "project-1",
     projectName: "paseo",
     workspaceDirectory: "/repo",
     projectKind: "git",
@@ -48,7 +49,7 @@ function project(overrides: ProjectOverrides = {}): SidebarProjectEntry {
     (host) => Object.assign({}, host, { projectId: host.projectId ?? `project-${host.serverId}` }),
   );
   return {
-    projectKey: "project-1",
+    viewKey: "project-1",
     projectName: "paseo",
     projectKind,
     iconWorkingDir: "/repo",
@@ -209,6 +210,22 @@ describe("buildSidebarProjectRowModel", () => {
     });
   });
 
+  it("keys project icon results by the rendered project view", () => {
+    const [iconTarget] = resolveSidebarProjectIconTargets([
+      project({
+        viewKey: '["placement","host-b","project-b"]',
+        hosts: [{ serverId: "host-b", iconWorkingDir: "/repo/b", canCreateWorktree: true }],
+      }),
+    ]);
+
+    expect(iconTarget).toEqual({
+      projectViewKey: '["placement","host-b","project-b"]',
+      serverId: "host-b",
+      projectId: "project-host-b",
+      iconWorkingDir: "/repo/b",
+    });
+  });
+
   it("resolves desktop file actions from the local project placement", () => {
     const groupedProject = project({
       iconWorkingDir: "/remote/repo",