fix(plugins): close R2 workspace gaps

tests/unit/plugin-workspace-controller.test.ts

@@ -23,6 +23,7 @@ function dependencies() {
     project: {
       setEnabled: vi.fn().mockResolvedValue(undefined),
     },
+    loginReturnPath: '/plugins?scope=all&source=official&state=available',
     navigate: vi.fn(),
     openSettings: vi.fn(),
   } satisfies PluginWorkspaceDispatchDependencies;
@@ -63,7 +64,10 @@ describe('plugin workspace controller', () => {
     ]);
     expect(deps.device.setEnabled.mock.calls).toEqual([['j', true], ['k', false]]);
     expect(deps.device.uninstall).toHaveBeenCalledExactlyOnceWith('l');
-    expect(deps.navigate.mock.calls).toEqual([['/login'], ['/project-config']]);
+    expect(deps.navigate.mock.calls).toEqual([
+      ['/login', { state: { from: '/plugins?scope=all&source=official&state=available' } }],
+      ['/project-config'],
+    ]);
     expect(deps.openSettings).toHaveBeenCalledExactlyOnceWith();
   });