feat: comprehensive frontend polish - UI/UX improvements across all pages

Public Pages:
- Landing page with server/client split and metadata export
- Cart page with ARIA accessibility and loading states
- Checkout page with form accessibility and proper design system
- Contact page with SEO metadata and improved accessibility
- Pricing page with enhanced FAQ accessibility
- Login page with Suspense boundaries and secure patterns

Brand Storefronts:
- Premium loading skeletons for Tuxedo and Indian River Direct
- Branded error boundaries with animations
- Loading.tsx for about, contact, FAQ, stops pages
- Error.tsx for all storefront subpages

Admin Dashboard:
- AdminSidebar: ARIA labels, keyboard navigation, mobile improvements
- DashboardClient: Stats cards, quick actions, usage progress
- Admin layout: Toast provider integration

Admin Orders/Products/Stops:
- Toast notification system with auto-dismiss
- Skeleton loading components (Table, Card, Stats, Form)
- Bulk actions (mark picked up, publish stops)
- Form validation with error styling

Admin Communications:
- AnalyticsDashboard: sparklines, stat cards, engagement badges
- CampaignComposerPage: step wizard, template selection, email preview
- SegmentBuilderPage: empty state, active segment handling
- ContactListPanel: loading skeletons, professional empty states
- MessageLogPanel: stats cards, engagement indicators
- HarvestReachNav: branded tab navigation
- All pages: metadata exports and loading.tsx

Admin Settings:
- SquareSyncSettingsClient: design system colors, save/cancel UX
- ShippingSettingsForm: validation, dirty state tracking
- Integrations page: proper layout with AI and communications sections
- Billing: improved plan comparison, add-on cards
- PaymentSettings: toggle components, validation

Wholesale Portal:
- Portal: loading skeletons, quantity stepper, search/filter
- Login/Register: FormField validation, success states
- Success/Cancel pages: animated checkmarks
- Employee portal: skeletons, empty states, mobile responsive

Water Log:
- FieldClient: loading step, progress indicator, spinner
- AdminClient: loading skeletons
- Admin pages: loading.tsx files

New Components:
- Toast.tsx/ToastContainer.tsx: comprehensive notification system
- Skeleton.tsx: shimmer loading components
- AdminToggle.tsx: consistent toggle/switch
- CommunicationsLoading.tsx: loading skeleton for comms
- ToastExport.ts: exports

CSS Improvements:
- Shimmer animation keyframes
- Toast slide-in animation

Accessibility:
- ARIA labels throughout
- Keyboard navigation
- Focus states
- Semantic HTML
- Screen reader support

src/app/admin/water-log/page.tsx

@@ -8,6 +8,51 @@ const TUXEDO_BRAND_ID = "64294306-5f42-463d-a5e8-2ad6c81a96de";
 
 export const dynamic = "force-dynamic";
 
+// ── Skeleton Loading ──────────────────────────────────────────────────────────
+function WaterLogLoadingSkeleton() {
+  return (
+    <div className="space-y-6 px-6 pb-8">
+      {/* Navigation skeleton */}
+      <div className="flex gap-2">
+        {[1, 2, 3].map(i => (
+          <div key={i} className="h-10 w-28 rounded-xl bg-slate-200 animate-pulse" />
+        ))}
+      </div>
+
+      {/* Summary skeleton */}
+      <div className="rounded-xl border border-slate-200 bg-white p-5 animate-pulse">
+        <div className="flex items-start justify-between mb-4">
+          <div className="h-5 w-32 bg-slate-200 rounded" />
+          <div className="h-8 w-48 bg-slate-100 rounded" />
+        </div>
+        <div className="grid grid-cols-3 gap-4">
+          {[1, 2, 3].map(i => (
+            <div key={i} className="space-y-1">
+              <div className="h-3 w-20 bg-slate-100 rounded" />
+              <div className="h-6 w-16 bg-slate-200 rounded" />
+            </div>
+          ))}
+        </div>
+      </div>
+
+      {/* Table skeletons */}
+      <div className="rounded-xl border border-slate-200 bg-white p-4 animate-pulse">
+        <div className="h-5 w-28 bg-slate-200 rounded mb-4" />
+        <div className="space-y-2">
+          {[1, 2, 3].map(i => (
+            <div key={i} className="flex items-center gap-4 py-3 border-b border-slate-50 last:border-0">
+              <div className="h-4 w-20 bg-slate-100 rounded" />
+              <div className="h-4 w-16 bg-slate-100 rounded" />
+              <div className="h-4 w-14 bg-slate-100 rounded ml-auto" />
+              <div className="h-4 w-12 bg-slate-100 rounded" />
+            </div>
+          ))}
+        </div>
+      </div>
+    </div>
+  );
+}
+
 export default async function AdminWaterLogPage() {
   const adminUser = await getAdminUser();