feat: Implement new settings pages and refactor application layout and navigation with new components and hooks.

web/src/components/layout/main-layout.tsx

@@ -0,0 +1,56 @@
+import { SidebarProvider, SidebarInset, SidebarTrigger } from "@/components/ui/sidebar"
+import { AppSidebar } from "./app-sidebar"
+import { MobileNav } from "@/components/navigation/mobile-nav"
+import { useIsMobile } from "@/hooks/use-mobile"
+import { Separator } from "@/components/ui/separator"
+import { useNavigation } from "@/contexts/navigation-context"
+
+interface MainLayoutProps {
+  children: React.ReactNode
+}
+
+export function MainLayout({ children }: MainLayoutProps) {
+  const isMobile = useIsMobile()
+  const { breadcrumbs, currentTitle } = useNavigation()
+
+  return (
+    <SidebarProvider>
+      <AppSidebar />
+      <SidebarInset>
+        {/* Header with breadcrumbs */}
+        <header className="flex h-16 shrink-0 items-center gap-2 border-b border-border/50 bg-background/60 backdrop-blur-xl supports-backdrop-filter:bg-background/60 transition-all duration-300 ease-in-out">
+          <div className="flex items-center gap-2 px-4 w-full">
+            <SidebarTrigger className="-ml-1 text-muted-foreground hover:text-primary transition-colors" />
+            <Separator orientation="vertical" className="mr-2 h-4 bg-border/50" />
+            <nav aria-label="Breadcrumb" className="flex items-center gap-1 text-sm bg-muted/30 px-3 py-1.5 rounded-full border border-border/30">
+              {breadcrumbs.length === 0 ? (
+                <span className="text-sm font-medium text-primary px-1">{currentTitle}</span>
+              ) : (
+                breadcrumbs.map((crumb, index) => (
+                  <span key={crumb.url} className="flex items-center gap-1">
+                    {index > 0 && (
+                      <span className="text-muted-foreground/50">/</span>
+                    )}
+                    {index === breadcrumbs.length - 1 ? (
+                      <span className="text-sm font-medium text-primary px-1">{crumb.title}</span>
+                    ) : (
+                      <span className="text-sm text-muted-foreground hover:text-foreground transition-colors px-1">{crumb.title}</span>
+                    )}
+                  </span>
+                ))
+              )}
+            </nav>
+          </div>
+        </header>
+
+        {/* Main content */}
+        <div className="flex-1 overflow-auto">
+          {children}
+        </div>
+
+        {/* Mobile bottom navigation */}
+        {isMobile && <MobileNav />}
+      </SidebarInset>
+    </SidebarProvider>
+  )
+}