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/app/icons.test.ts

@@ -0,0 +1,34 @@
+import { describe, expect, it } from 'vitest'
+import { Archive, Disc3, Settings, Square, Tags } from '@lucide/vue'
+import { fallbackIcon, iconFor, icons, winterIcons } from '../../src/app/icons'
+
+describe('iconFor', () => {
+  it('resolves lucide names', () => {
+    expect(iconFor('disc-3')).toBe(Disc3)
+    expect(iconFor('tags')).toBe(Tags)
+    expect(iconFor('  tags  ')).toBe(Tags)
+  })
+
+  it('resolves Winter icon aliases', () => {
+    expect(iconFor('icon-archive')).toBe(Archive)
+    expect(iconFor('icon-cog')).toBe(Settings)
+  })
+
+  it('falls back to the neutral square for unknown, empty or missing names', () => {
+    expect(fallbackIcon).toBe(Square)
+    expect(iconFor('unknown-icon-name')).toBe(Square)
+    expect(iconFor('icon-unknown')).toBe(Square)
+    expect(iconFor('')).toBe(Square)
+    expect(iconFor(null)).toBe(Square)
+    expect(iconFor(undefined)).toBe(Square)
+    expect(iconFor('constructor')).toBe(Square)
+    expect(iconFor('toString')).toBe(Square)
+    expect(iconFor('__proto__')).toBe(Square)
+  })
+
+  it('maps every Winter alias onto a registered lucide icon', () => {
+    for (const [alias, name] of Object.entries(winterIcons)) {
+      expect(icons[name], alias).toBeDefined()
+    }
+  })
+})