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/atoms/status-badge/status-badge.component.ts

@@ -0,0 +1,36 @@
+import { Component, input } from '@angular/core';
+
+// CIBG-GAP EXTENSION: n/a — deliberate custom surface, not Bootstrap's `.badge`
+// (whose pill padding/colour don't fit a status dot); see cibg-gaps.mdx.
+/** Atom: a coloured dot + label. Purely presentational and domain-free — the
+    caller decides what colour and label mean (e.g. via registration.policy).
+    This keeps the shared UI kernel free of any domain knowledge. */
+@Component({
+  selector: 'app-status-badge',
+  // Local class is NOT Bootstrap's .badge (which would add pill padding/colour) — hence .status-badge.
+  styles: [
+    `
+      .status-badge {
+        display: inline-flex;
+        align-items: center;
+        gap: var(--rhc-space-max-md);
+      }
+      .dot {
+        inline-size: 0.75rem;
+        block-size: 0.75rem;
+        border-radius: var(--rhc-border-radius-round);
+        flex: none;
+      }
+    `,
+  ],
+  template: `
+    <span class="status-badge">
+      <span class="dot" [style.background-color]="color()" aria-hidden="true"></span>
+      <span>{{ label() }}</span>
+    </span>
+  `,
+})
+export class StatusBadgeComponent {
+  label = input.required<string>();
+  color = input.required<string>();
+}