Update frontend-web dependencies and implement routing structure

- Added new dependencies: @fontsource-variable/geist, @radix-ui/react-separator, @radix-ui/react-tooltip, date-fns, react-router-dom, and recharts.
- Updated index.html to set the HTML class to "dark" for dark mode support.
- Refactored App component to implement routing with React Router, replacing the previous UI structure with a layout and multiple pages (NetWorth, Debts, Invoices, Clients).
- Enhanced CSS for dark mode and added depth utilities for improved UI aesthetics.
- Expanded Redux store to include net worth, debts, and invoices slices for comprehensive state management.

frontend-web/src/components/Layout.tsx

@@ -0,0 +1,53 @@
+import {NavLink, Outlet} from 'react-router-dom';
+import {Tooltip, TooltipContent, TooltipProvider, TooltipTrigger} from '@/components/ui/tooltip';
+
+const navItems = [
+  {to: '/', label: 'Net Worth', icon: '◈'},
+  {to: '/debts', label: 'Debts', icon: '◇'},
+  {to: '/invoices', label: 'Invoices', icon: '▤'},
+  {to: '/clients', label: 'Clients', icon: '◉'},
+];
+
+export default function Layout() {
+  return (
+    <TooltipProvider delayDuration={0}>
+      <div className="flex min-h-screen">
+        {/* Sidebar */}
+        <aside className="fixed left-0 top-0 z-40 flex h-screen w-16 flex-col border-r border-border bg-sidebar">
+          <div className="flex h-16 items-center justify-center border-b border-border">
+            <span className="text-xl font-semibold text-foreground">W</span>
+          </div>
+          <nav className="flex flex-1 flex-col items-center gap-2 py-4">
+            {navItems.map(item => (
+              <Tooltip key={item.to}>
+                <TooltipTrigger asChild>
+                  <NavLink
+                    to={item.to}
+                    className={({isActive}) =>
+                      `flex h-10 w-10 items-center justify-center rounded-lg text-lg transition-colors ${
+                        isActive
+                          ? 'bg-accent text-foreground'
+                          : 'text-muted-foreground hover:bg-accent/50 hover:text-foreground'
+                      }`
+                    }
+                  >
+                    {item.icon}
+                  </NavLink>
+                </TooltipTrigger>
+                <TooltipContent side="right" sideOffset={8}>
+                  {item.label}
+                </TooltipContent>
+              </Tooltip>
+            ))}
+          </nav>
+        </aside>
+
+        {/* Main content */}
+        <main className="ml-16 flex-1">
+          <Outlet />
+        </main>
+      </div>
+    </TooltipProvider>
+  );
+}
+

frontend-web/src/components/ui/separator.tsx

@@ -0,0 +1,26 @@
+import * as React from "react"
+import * as SeparatorPrimitive from "@radix-ui/react-separator"
+
+import { cn } from "@/lib/utils"
+
+function Separator({
+  className,
+  orientation = "horizontal",
+  decorative = true,
+  ...props
+}: React.ComponentProps<typeof SeparatorPrimitive.Root>) {
+  return (
+    <SeparatorPrimitive.Root
+      data-slot="separator"
+      decorative={decorative}
+      orientation={orientation}
+      className={cn(
+        "bg-border shrink-0 data-[orientation=horizontal]:h-px data-[orientation=horizontal]:w-full data-[orientation=vertical]:h-full data-[orientation=vertical]:w-px",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+export { Separator }

frontend-web/src/components/ui/tooltip.tsx

@@ -0,0 +1,61 @@
+"use client"
+
+import * as React from "react"
+import * as TooltipPrimitive from "@radix-ui/react-tooltip"
+
+import { cn } from "@/lib/utils"
+
+function TooltipProvider({
+  delayDuration = 0,
+  ...props
+}: React.ComponentProps<typeof TooltipPrimitive.Provider>) {
+  return (
+    <TooltipPrimitive.Provider
+      data-slot="tooltip-provider"
+      delayDuration={delayDuration}
+      {...props}
+    />
+  )
+}
+
+function Tooltip({
+  ...props
+}: React.ComponentProps<typeof TooltipPrimitive.Root>) {
+  return (
+    <TooltipProvider>
+      <TooltipPrimitive.Root data-slot="tooltip" {...props} />
+    </TooltipProvider>
+  )
+}
+
+function TooltipTrigger({
+  ...props
+}: React.ComponentProps<typeof TooltipPrimitive.Trigger>) {
+  return <TooltipPrimitive.Trigger data-slot="tooltip-trigger" {...props} />
+}
+
+function TooltipContent({
+  className,
+  sideOffset = 0,
+  children,
+  ...props
+}: React.ComponentProps<typeof TooltipPrimitive.Content>) {
+  return (
+    <TooltipPrimitive.Portal>
+      <TooltipPrimitive.Content
+        data-slot="tooltip-content"
+        sideOffset={sideOffset}
+        className={cn(
+          "bg-foreground text-background animate-in fade-in-0 zoom-in-95 data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=closed]:zoom-out-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 z-50 w-fit origin-(--radix-tooltip-content-transform-origin) rounded-md px-3 py-1.5 text-xs text-balance",
+          className
+        )}
+        {...props}
+      >
+        {children}
+        <TooltipPrimitive.Arrow className="bg-foreground fill-foreground z-50 size-2.5 translate-y-[calc(-50%_-_2px)] rotate-45 rounded-[2px]" />
+      </TooltipPrimitive.Content>
+    </TooltipPrimitive.Portal>
+  )
+}
+
+export { Tooltip, TooltipTrigger, TooltipContent, TooltipProvider }