feat(frontend): Complete shadcn/ui migration with dark mode support and analytics updates.

- Convert all analytics components to use shadcn Card and semantic colors
- Update RawTransactionModal with proper shadcn styling and theme support
- Fix all remaining hardcoded colors to use CSS variables (bg-card, text-foreground, etc.)
- Ensure consistent theming across light/dark modes for all components
- Add custom tooltips with semantic colors for chart components

🤖 Generated with [Claude Code](https://claude.ai/code)

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

frontend/src/components/ui/pagination.tsx

@@ -0,0 +1,118 @@
+import * as React from "react";
+import { ChevronLeft, ChevronRight, MoreHorizontal } from "lucide-react";
+
+import { cn } from "@/lib/utils";
+import { buttonVariants } from "@/components/ui/button";
+import type { ButtonProps } from "@/components/ui/button";
+
+const Pagination = ({ className, ...props }: React.ComponentProps<"nav">) => (
+  <nav
+    role="navigation"
+    aria-label="pagination"
+    className={cn("mx-auto flex w-full justify-center", className)}
+    {...props}
+  />
+);
+Pagination.displayName = "Pagination";
+
+const PaginationContent = React.forwardRef<
+  HTMLUListElement,
+  React.ComponentProps<"ul">
+>(({ className, ...props }, ref) => (
+  <ul
+    ref={ref}
+    className={cn("flex flex-row items-center gap-1", className)}
+    {...props}
+  />
+));
+PaginationContent.displayName = "PaginationContent";
+
+const PaginationItem = React.forwardRef<
+  HTMLLIElement,
+  React.ComponentProps<"li">
+>(({ className, ...props }, ref) => (
+  <li ref={ref} className={cn("", className)} {...props} />
+));
+PaginationItem.displayName = "PaginationItem";
+
+type PaginationLinkProps = {
+  isActive?: boolean;
+} & Pick<ButtonProps, "size"> &
+  React.ComponentProps<"a">;
+
+const PaginationLink = ({
+  className,
+  isActive,
+  size = "icon",
+  ...props
+}: PaginationLinkProps) => (
+  <a
+    aria-current={isActive ? "page" : undefined}
+    className={cn(
+      buttonVariants({
+        variant: isActive ? "outline" : "ghost",
+        size,
+      }),
+      className,
+    )}
+    {...props}
+  />
+);
+PaginationLink.displayName = "PaginationLink";
+
+const PaginationPrevious = ({
+  className,
+  ...props
+}: React.ComponentProps<typeof PaginationLink>) => (
+  <PaginationLink
+    aria-label="Go to previous page"
+    size="default"
+    className={cn("gap-1 pl-2.5", className)}
+    {...props}
+  >
+    <ChevronLeft className="h-4 w-4" />
+    <span>Previous</span>
+  </PaginationLink>
+);
+PaginationPrevious.displayName = "PaginationPrevious";
+
+const PaginationNext = ({
+  className,
+  ...props
+}: React.ComponentProps<typeof PaginationLink>) => (
+  <PaginationLink
+    aria-label="Go to next page"
+    size="default"
+    className={cn("gap-1 pr-2.5", className)}
+    {...props}
+  >
+    <span>Next</span>
+    <ChevronRight className="h-4 w-4" />
+  </PaginationLink>
+);
+PaginationNext.displayName = "PaginationNext";
+
+const PaginationEllipsis = ({
+  className,
+  ...props
+}: React.ComponentProps<"span">) => (
+  <span
+    aria-hidden
+    className={cn("flex h-9 w-9 items-center justify-center", className)}
+    {...props}
+  >
+    <MoreHorizontal className="h-4 w-4" />
+    <span className="sr-only">More pages</span>
+  </span>
+);
+PaginationEllipsis.displayName = "PaginationEllipsis";
+
+export {
+  Pagination,
+  PaginationContent,
+  PaginationEllipsis,
+  PaginationItem,
+  PaginationLink,
+  PaginationNext,
+  PaginationPrevious,
+};