feat: isolate all four portals with route groups + polished design system

Fix blank /org/login (and /admin/login): the guarded portal layout was
wrapping its own login route, rendering null when unauthenticated. Move
each portal's authed pages into a (authed)/(chapter) route group so login
pages live outside the guard.

Structure:
- app/(chapter)/* — chapter admin pages + guarded layout (was root-level)
- app/org/(authed)/* — org pages + guarded layout; /org/login now free
- app/admin/(authed)/* — admin pages + guarded layout; /admin/login free
- Root layout slimmed to providers only (no shared sidebar)
- Convert moved files' relative imports to @/app alias

Design system:
- PortalShell: shared sidebar shell (brand mark, themed active nav with
  accent bar, avatar dropdown user menu, loading skeletons)
- portal-theme.ts: per-portal theme tokens (violet/slate/blue/emerald)
- PortalLoginShell redesigned: two-column with gradient branding panel,
  dotted pattern, value-prop highlights, built-in back link
- New shadcn components: Avatar, DropdownMenu, Skeleton
- Move shared DraftCard to _components/draft-card.tsx (used by 2 portals)
- Portal selector: remove Super Admin card, icon tiles, hover lift
- All 4 login pages use react-hook-form + Zod + themed shell
- Member nav restored to full 11-section list with icons

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/web/app/(chapter)/search/page.test.tsx

@@ -0,0 +1,49 @@
+import { render, screen } from '@testing-library/react';
+import { SearchResults } from './page';
+
+const makeHit = (id: string, content: string) => ({
+  id,
+  content,
+  senderName: 'Alice',
+  sourceGroupName: 'UP Parivar Dallas',
+  tags: ['#important'],
+  approvedAt: 1748390400000,
+});
+
+describe('SearchResults', () => {
+  it('shows "no results" when hits array is empty', () => {
+    render(<SearchResults hits={[]} total={0} q="missing" page={1} />);
+    expect(screen.getByText(/no results/i)).toBeInTheDocument();
+  });
+
+  it('renders each hit content', () => {
+    render(
+      <SearchResults
+        hits={[makeHit('m1', 'Hello world'), makeHit('m2', 'Event tonight')]}
+        total={2}
+        q="hello"
+        page={1}
+      />,
+    );
+    expect(screen.getByText('Hello world')).toBeInTheDocument();
+    expect(screen.getByText('Event tonight')).toBeInTheDocument();
+  });
+
+  it('shows the total result count', () => {
+    render(<SearchResults hits={[makeHit('m1', 'Test')]} total={42} q="test" page={1} />);
+    expect(screen.getByText(/42/)).toBeInTheDocument();
+  });
+
+  it('shows sender name, group name, and formatted date for each hit', () => {
+    render(<SearchResults hits={[makeHit('m1', 'Test')]} total={1} q="test" page={1} />);
+    expect(screen.getByText(/alice/i)).toBeInTheDocument();
+    expect(screen.getByText(/UP Parivar Dallas/i)).toBeInTheDocument();
+    // approvedAt: 1748390400000 — verify a date string is rendered (locale-aware)
+    expect(screen.getByText(new Date(1748390400000).toLocaleDateString())).toBeInTheDocument();
+  });
+
+  it('shows tags for each hit', () => {
+    render(<SearchResults hits={[makeHit('m1', 'Test')]} total={1} q="test" page={1} />);
+    expect(screen.getByText('#important')).toBeInTheDocument();
+  });
+});