feat(web): add Admin module frontend — dashboard, users, moderation, KYC

Build the complete admin panel UI at apps/web/app/(admin)/:
- Admin layout with sidebar navigation and ADMIN role guard
- Dashboard page with stats cards and revenue chart
- User management with search, filters, pagination, detail panel, ban/unban
- Listings moderation queue with approve/reject/bulk actions
- KYC review page with document viewer and approve/reject flow
- New reusable UI components: Dialog, Table

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/web/components/ui/dialog.tsx

@@ -0,0 +1,84 @@
+'use client';
+
+import * as React from 'react';
+import { cn } from '@/lib/utils';
+
+interface DialogProps {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  children: React.ReactNode;
+}
+
+function Dialog({ open, onOpenChange, children }: DialogProps) {
+  React.useEffect(() => {
+    if (open) {
+      document.body.style.overflow = 'hidden';
+    } else {
+      document.body.style.overflow = '';
+    }
+    return () => {
+      document.body.style.overflow = '';
+    };
+  }, [open]);
+
+  if (!open) return null;
+
+  return (
+    <div className="fixed inset-0 z-50">
+      <div
+        className="fixed inset-0 bg-black/80 animate-in fade-in-0"
+        onClick={() => onOpenChange(false)}
+      />
+      <div className="fixed inset-0 flex items-center justify-center p-4">
+        {children}
+      </div>
+    </div>
+  );
+}
+
+const DialogContent = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, children, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn(
+      'relative z-50 w-full max-w-lg rounded-lg border bg-background p-6 shadow-lg animate-in fade-in-0 zoom-in-95',
+      className,
+    )}
+    onClick={(e) => e.stopPropagation()}
+    {...props}
+  >
+    {children}
+  </div>
+));
+DialogContent.displayName = 'DialogContent';
+
+function DialogHeader({ className, ...props }: React.HTMLAttributes<HTMLDivElement>) {
+  return (
+    <div className={cn('flex flex-col space-y-1.5 text-center sm:text-left', className)} {...props} />
+  );
+}
+
+function DialogTitle({ className, ...props }: React.HTMLAttributes<HTMLHeadingElement>) {
+  return (
+    <h2 className={cn('text-lg font-semibold leading-none tracking-tight', className)} {...props} />
+  );
+}
+
+function DialogDescription({ className, ...props }: React.HTMLAttributes<HTMLParagraphElement>) {
+  return (
+    <p className={cn('text-sm text-muted-foreground', className)} {...props} />
+  );
+}
+
+function DialogFooter({ className, ...props }: React.HTMLAttributes<HTMLDivElement>) {
+  return (
+    <div
+      className={cn('flex flex-col-reverse sm:flex-row sm:justify-end sm:space-x-2 mt-4', className)}
+      {...props}
+    />
+  );
+}
+
+export { Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription, DialogFooter };

apps/web/components/ui/table.tsx

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+import * as React from 'react';
+import { cn } from '@/lib/utils';
+
+const Table = React.forwardRef<HTMLTableElement, React.HTMLAttributes<HTMLTableElement>>(
+  ({ className, ...props }, ref) => (
+    <div className="relative w-full overflow-auto">
+      <table
+        ref={ref}
+        className={cn('w-full caption-bottom text-sm', className)}
+        {...props}
+      />
+    </div>
+  ),
+);
+Table.displayName = 'Table';
+
+const TableHeader = React.forwardRef<
+  HTMLTableSectionElement,
+  React.HTMLAttributes<HTMLTableSectionElement>
+>(({ className, ...props }, ref) => (
+  <thead ref={ref} className={cn('[&_tr]:border-b', className)} {...props} />
+));
+TableHeader.displayName = 'TableHeader';
+
+const TableBody = React.forwardRef<
+  HTMLTableSectionElement,
+  React.HTMLAttributes<HTMLTableSectionElement>
+>(({ className, ...props }, ref) => (
+  <tbody ref={ref} className={cn('[&_tr:last-child]:border-0', className)} {...props} />
+));
+TableBody.displayName = 'TableBody';
+
+const TableRow = React.forwardRef<HTMLTableRowElement, React.HTMLAttributes<HTMLTableRowElement>>(
+  ({ className, ...props }, ref) => (
+    <tr
+      ref={ref}
+      className={cn(
+        'border-b transition-colors hover:bg-muted/50 data-[state=selected]:bg-muted',
+        className,
+      )}
+      {...props}
+    />
+  ),
+);
+TableRow.displayName = 'TableRow';
+
+const TableHead = React.forwardRef<
+  HTMLTableCellElement,
+  React.ThHTMLAttributes<HTMLTableCellElement>
+>(({ className, ...props }, ref) => (
+  <th
+    ref={ref}
+    className={cn(
+      'h-12 px-4 text-left align-middle font-medium text-muted-foreground [&:has([role=checkbox])]:pr-0',
+      className,
+    )}
+    {...props}
+  />
+));
+TableHead.displayName = 'TableHead';
+
+const TableCell = React.forwardRef<
+  HTMLTableCellElement,
+  React.TdHTMLAttributes<HTMLTableCellElement>
+>(({ className, ...props }, ref) => (
+  <td
+    ref={ref}
+    className={cn('p-4 align-middle [&:has([role=checkbox])]:pr-0', className)}
+    {...props}
+  />
+));
+TableCell.displayName = 'TableCell';
+
+export { Table, TableHeader, TableBody, TableRow, TableHead, TableCell };