WP-11: contract and failing tests for package upgrades

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

frontend/src/components/PackageTable.test.ts

@@ -35,3 +35,15 @@ describe('PackageTable', () => {
     expect(rows(w)[0]).toContain('microk8s')
   })
 })
+
+describe('PackageTable selection', () => {
+  it('lets the user select upgradable packages and emits the names', async () => {
+    const w = mount(PackageTable, { props: { packages: pkgs, selectable: true } })
+    const boxes = w.findAll('input[name=select]')
+    expect(boxes).toHaveLength(2) // only upgradable rows get a checkbox
+    await boxes[0].setValue(true)
+    expect(w.emitted('update:selected')!.at(-1)![0]).toEqual(['openssl'])
+    await boxes[1].setValue(true)
+    expect(w.emitted('update:selected')!.at(-1)![0]).toEqual(['openssl', 'curl'])
+  })
+})