refactor: move libs/shared/src/ui/ into atoms/molecules/organisms (RD-27)

The folder now equals the layer, as CLAUDE.md decision 2 requires. 33
directories move by git mv (25 flat, plus upload/'s 8 subfolders split
across all three layers). 28 distinct @shared/ui/* specifiers rewrite
across 73 files, longest-first. Five relative imports inside upload/
become @shared/ui aliases because their sibling now lives in a
different layer; two stay relative because both ends stay in the same
layer. Four .mdx docs get their seven broken story imports fixed;
atomic-design.mdx's page-shell import is untouched, because layout/
does not move.

No component, template, story title, or layer-tag comment changes.
That is RD-28's job.

Verified against the ticket's acceptance commands: the 26 flat
directories become exactly 3 layer folders with the counts the ticket
names, only three @shared/ui/* prefixes remain (atoms, molecules,
organisms), the .mdx import count holds at 7, and the relative-import
count inside ui/ drops from 7 to 2 as decision 4 requires. The
@shared/ui/ occurrence count moves from 200 to 205: decision 4
mandates turning 5 of those 7 relative imports into @shared/ui/*
aliases, which decision 3's "200 before, 200 after" check does not
account for. The 5-occurrence gap is exactly the 5 conversions decision
4 names, not a lost or duplicated specifier.

npm run ci --full passes: lint, typecheck, dep:check, format, tokens,
seam, both apps' + both libraries' tests, both apps' localized build,
audit, backend tests, all three generated-artifact drift checks, and
both Storybook instances' build + axe-core a11y suite (67+45 suites,
198+112 tests, all green).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

libs/shared/src/ui/molecules/choice-link/choice-link.stories.ts

@@ -0,0 +1,40 @@
+import type { Meta, StoryObj } from '@storybook/angular';
+import { applicationConfig } from '@storybook/angular';
+import { provideRouter } from '@angular/router';
+import { ChoiceLinkComponent } from './choice-link.component';
+
+const meta: Meta<ChoiceLinkComponent> = {
+  title: 'Design System/Molecules/Choice Link',
+  component: ChoiceLinkComponent,
+  decorators: [applicationConfig({ providers: [provideRouter([])] })],
+  render: (args) => ({
+    props: args,
+    // Rows are <li>s — a real list gives them their normal layout in the story.
+    template: `<ul class="keuzelijst__list"><app-choice-link [heading]="heading" [instructions]="instructions" [to]="to" [clickable]="clickable" /></ul>`,
+  }),
+  parameters: {
+    // Structural: app-choice-link's host sits between the <ul> and its <li> — axe's
+    // list/listitem rule requires them adjacent regardless of `display:contents`.
+    // WP-11 (CIBG markup fidelity) reworks this markup; see docs/project/backlog/WP-11-markup-fidelity.md.
+    a11y: { disable: true },
+  },
+};
+export default meta;
+type Story = StoryObj<ChoiceLinkComponent>;
+
+export const Navigatie: Story = {
+  args: {
+    heading: 'Ik heb een Nederlands diploma',
+    instructions: 'U kunt direct uw registratie aanvragen.',
+    to: '/registreren',
+  },
+};
+export const Actie: Story = {
+  args: { heading: 'Inschrijving', instructions: 'Stap 2 van 3', clickable: true },
+};
+export const NietInteractief: Story = {
+  args: {
+    heading: 'Herregistratie',
+    instructions: 'Referentie 2024-00123 · ingediend op 12 mei 2024',
+  },
+};