test(10-05): bring every SPA module, composable and component under Vitest

- 41 unit and component suites under admin/tests/{app,state,shell,list,form,relation,views,ui}
  covering states and a11y roles; every src module is imported by a test
- typed fixture helper assigns each JSON fixture to its generated OpenAPI type
- fix: iconFor ignores inherited object members such as "constructor"
- fix: field controls import ./control instead of the registry (import cycle
  left a renderer unregistered depending on module load order)
- fix: dropdown shows the placeholder for an unknown stored value next to an emptyOption
- fix: list announces a failed schema load even when the rows arrive after it
- tailwind no longer scans admin/tests; boardwalk/dist rebuilt

admin/tests/views/App.test.ts

@@ -0,0 +1,54 @@
+import { afterEach, beforeEach, describe, expect, it } from 'vitest'
+import { enableAutoUnmount, flushPromises, mount } from '@vue/test-utils'
+import App from '../../src/App.vue'
+import NotFoundView from '../../src/views/NotFoundView.vue'
+import { setNavigation } from '../../src/state/useNavigation'
+import { navigationFixture } from '../fixtures/typed'
+import { resetState, routerAt, signIn } from '../helpers'
+
+async function mountAt(path: string) {
+  const router = await routerAt(path)
+  const wrapper = mount(App, { global: { plugins: [router] } })
+  await flushPromises()
+  return { wrapper, router }
+}
+
+beforeEach(() => {
+  resetState()
+})
+
+afterEach(() => {
+  document.body.innerHTML = ''
+})
+
+enableAutoUnmount(afterEach)
+
+describe('app root', () => {
+  it('renders the login route outside the shell', async () => {
+    const { wrapper } = await mountAt('/login')
+    expect(wrapper.find('nav[aria-label="Wtyczki"]').exists()).toBe(false)
+    expect(wrapper.find('form').exists()).toBe(true)
+  })
+
+  it('renders shell routes inside the shell and an unknown path as not found', async () => {
+    await signIn()
+    setNavigation(navigationFixture.data)
+    const { wrapper } = await mountAt('/nowhere')
+    expect(wrapper.find('nav[aria-label="Wtyczki"]').exists()).toBe(true)
+    expect(wrapper.findComponent(NotFoundView).exists()).toBe(true)
+    expect(wrapper.find('main h1').text()).toBe('Nie znaleziono strony.')
+  })
+
+  it('says so when the admin may open no plugin', async () => {
+    await signIn()
+    const { wrapper } = await mountAt('/')
+    expect(wrapper.find('main h1').text()).toBe('Brak dostępnych sekcji.')
+  })
+})
+
+describe('not found view', () => {
+  it('switches its message by the home prop', () => {
+    expect(mount(NotFoundView).find('h1').text()).toBe('Nie znaleziono strony.')
+    expect(mount(NotFoundView, { props: { home: true } }).find('h1').text()).toBe('Brak dostępnych sekcji.')
+  })
+})