añadido componente para crear posts y modificado menu auth

src/lib/components/ui/input-group/index.ts

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+import Root from "./input-group.svelte";
+import Addon from "./input-group-addon.svelte";
+import Button from "./input-group-button.svelte";
+import Input from "./input-group-input.svelte";
+import Text from "./input-group-text.svelte";
+import Textarea from "./input-group-textarea.svelte";
+
+export {
+	Root,
+	Addon,
+	Button,
+	Input,
+	Text,
+	Textarea,
+	//
+	Root as InputGroup,
+	Addon as InputGroupAddon,
+	Button as InputGroupButton,
+	Input as InputGroupInput,
+	Text as InputGroupText,
+	Textarea as InputGroupTextarea,
+};

src/lib/components/ui/input-group/input-group-addon.svelte

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+<script lang="ts" module>
+	import { tv, type VariantProps } from "tailwind-variants";
+	export const inputGroupAddonVariants = tv({
+		base: "text-muted-foreground flex h-auto cursor-text select-none items-center justify-center gap-2 py-1.5 text-sm font-medium group-data-[disabled=true]/input-group:opacity-50 [&>kbd]:rounded-[calc(var(--radius)-5px)] [&>svg:not([class*='size-'])]:size-4",
+		variants: {
+			align: {
+				"inline-start":
+					"order-first ps-3 has-[>button]:ms-[-0.45rem] has-[>kbd]:ms-[-0.35rem]",
+				"inline-end":
+					"order-last pe-3 has-[>button]:me-[-0.45rem] has-[>kbd]:me-[-0.35rem]",
+				"block-start":
+					"[.border-b]:pb-3 order-first w-full justify-start px-3 pt-3 group-has-[>input]/input-group:pt-2.5",
+				"block-end":
+					"[.border-t]:pt-3 order-last w-full justify-start px-3 pb-3 group-has-[>input]/input-group:pb-2.5",
+			},
+		},
+		defaultVariants: {
+			align: "inline-start",
+		},
+	});
+
+	export type InputGroupAddonAlign = VariantProps<typeof inputGroupAddonVariants>["align"];
+</script>
+
+<script lang="ts">
+	import { cn, type WithElementRef } from "$lib/utils.js";
+	import type { HTMLAttributes } from "svelte/elements";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		align = "inline-start",
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLDivElement>> & {
+		align?: InputGroupAddonAlign;
+	} = $props();
+</script>
+
+<div
+	bind:this={ref}
+	role="group"
+	data-slot="input-group-addon"
+	data-align={align}
+	class={cn(inputGroupAddonVariants({ align }), className)}
+	onclick={(e) => {
+		if ((e.target as HTMLElement).closest("button")) {
+			return;
+		}
+		e.currentTarget.parentElement?.querySelector("input")?.focus();
+	}}
+	{...restProps}
+>
+	{@render children?.()}
+</div>

src/lib/components/ui/input-group/input-group-button.svelte

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+<script lang="ts" module>
+	import { tv, type VariantProps } from "tailwind-variants";
+
+	const inputGroupButtonVariants = tv({
+		base: "flex items-center gap-2 text-sm shadow-none",
+		variants: {
+			size: {
+				xs: "h-6 gap-1 rounded-[calc(var(--radius)-5px)] px-2 has-[>svg]:px-2 [&>svg:not([class*='size-'])]:size-3.5",
+				sm: "h-8 gap-1.5 rounded-md px-2.5 has-[>svg]:px-2.5",
+				"icon-xs": "size-6 rounded-[calc(var(--radius)-5px)] p-0 has-[>svg]:p-0",
+				"icon-sm": "size-8 p-0 has-[>svg]:p-0",
+			},
+		},
+		defaultVariants: {
+			size: "xs",
+		},
+	});
+
+	export type InputGroupButtonSize = VariantProps<typeof inputGroupButtonVariants>["size"];
+</script>
+
+<script lang="ts">
+	import { cn } from "$lib/utils.js";
+	import type { ComponentProps } from "svelte";
+	import { Button } from "$lib/components/ui/button/index.js";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		type = "button",
+		variant = "ghost",
+		size = "xs",
+		...restProps
+	}: Omit<ComponentProps<typeof Button>, "href" | "size"> & {
+		size?: InputGroupButtonSize;
+	} = $props();
+</script>
+
+<Button
+	bind:ref
+	{type}
+	data-size={size}
+	{variant}
+	class={cn(inputGroupButtonVariants({ size }), className)}
+	{...restProps}
+>
+	{@render children?.()}
+</Button>

src/lib/components/ui/input-group/input-group-input.svelte

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+<script lang="ts">
+	import { cn } from "$lib/utils.js";
+	import type { ComponentProps } from "svelte";
+	import { Input } from "$lib/components/ui/input/index.js";
+
+	let {
+		ref = $bindable(null),
+		value = $bindable(),
+		class: className,
+		...props
+	}: ComponentProps<typeof Input> = $props();
+</script>
+
+<Input
+	bind:ref
+	data-slot="input-group-control"
+	class={cn(
+		"flex-1 rounded-none border-0 bg-transparent shadow-none focus-visible:ring-0 dark:bg-transparent",
+		className
+	)}
+	bind:value
+	{...props}
+/>

src/lib/components/ui/input-group/input-group-text.svelte

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+<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<HTMLSpanElement>> = $props();
+</script>
+
+<span
+	bind:this={ref}
+	class={cn(
+		"text-muted-foreground flex items-center gap-2 text-sm [&_svg:not([class*='size-'])]:size-4 [&_svg]:pointer-events-none",
+		className
+	)}
+	{...restProps}
+>
+	{@render children?.()}
+</span>

src/lib/components/ui/input-group/input-group-textarea.svelte

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+<script lang="ts">
+	import { cn } from "$lib/utils.js";
+	import { Textarea } from "$lib/components/ui/textarea/index.js";
+	import type { ComponentProps } from "svelte";
+
+	let {
+		ref = $bindable(null),
+		value = $bindable(),
+		class: className,
+		...props
+	}: ComponentProps<typeof Textarea> = $props();
+</script>
+
+<Textarea
+	bind:ref
+	data-slot="input-group-control"
+	class={cn(
+		"flex-1 resize-none rounded-none border-0 bg-transparent py-3 shadow-none focus-visible:ring-0 dark:bg-transparent",
+		className
+	)}
+	bind:value
+	{...props}
+/>

src/lib/components/ui/input-group/input-group.svelte

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+<script lang="ts">
+	import { cn, type WithElementRef } from "$lib/utils.js";
+	import type { HTMLAttributes } from "svelte/elements";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		...props
+	}: WithElementRef<HTMLAttributes<HTMLDivElement>> = $props();
+</script>
+
+<div
+	bind:this={ref}
+	data-slot="input-group"
+	role="group"
+	class={cn(
+		"group/input-group border-input dark:bg-input/30 shadow-xs relative flex w-full items-center rounded-md border outline-none transition-[color,box-shadow]",
+		"h-9 has-[>textarea]:h-auto",
+
+		// Variants based on alignment.
+		"has-[>[data-align=inline-start]]:[&>input]:ps-2",
+		"has-[>[data-align=inline-end]]:[&>input]:pe-2",
+		"has-[>[data-align=block-start]]:h-auto has-[>[data-align=block-start]]:flex-col has-[>[data-align=block-start]]:[&>input]:pb-3",
+		"has-[>[data-align=block-end]]:h-auto has-[>[data-align=block-end]]:flex-col has-[>[data-align=block-end]]:[&>input]:pt-3",
+
+		// Focus state.
+		"has-[[data-slot=input-group-control]:focus-visible]:border-ring has-[[data-slot=input-group-control]:focus-visible]:ring-ring/50 has-[[data-slot=input-group-control]:focus-visible]:ring-[3px]",
+
+		// Error state.
+		"has-[[data-slot][aria-invalid=true]]:ring-destructive/20 has-[[data-slot][aria-invalid=true]]:border-destructive dark:has-[[data-slot][aria-invalid=true]]:ring-destructive/40",
+
+		className
+	)}
+	{...props}
+>
+	{@render children?.()}
+</div>