añadido componente para crear posts y modificado menu auth

src/lib/components/ui/kbd/kbd.svelte

@@ -0,0 +1,25 @@
+<script lang="ts">
+	import { cn, type WithElementRef } from "$lib/utils.js";
+	import type { HTMLAttributes } from "svelte/elements";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLElement>> = $props();
+</script>
+
+<kbd
+	bind:this={ref}
+	data-slot="kbd"
+	class={cn(
+		"bg-muted text-muted-foreground pointer-events-none inline-flex h-5 w-fit min-w-5 select-none items-center justify-center gap-1 rounded-sm px-1 font-sans text-xs font-medium",
+		"[&_svg:not([class*='size-'])]:size-3",
+		"[[data-slot=tooltip-content]_&]:bg-background/20 [[data-slot=tooltip-content]_&]:text-background dark:[[data-slot=tooltip-content]_&]:bg-background/10",
+		className
+	)}
+	{...restProps}
+>
+	{@render children?.()}
+</kbd>