Sync from upstream llama.cpp repository

tools/server/webui/src/app.css

@@ -0,0 +1,138 @@
+@import 'tailwindcss';
+
+@import 'tw-animate-css';
+
+@custom-variant dark (&:is(.dark *));
+
+:root {
+	--radius: 0.625rem;
+	--background: oklch(1 0 0);
+	--foreground: oklch(0.145 0 0);
+	--card: oklch(1 0 0);
+	--card-foreground: oklch(0.145 0 0);
+	--popover: oklch(1 0 0);
+	--popover-foreground: oklch(0.145 0 0);
+	--primary: oklch(0.205 0 0);
+	--primary-foreground: oklch(0.985 0 0);
+	--secondary: oklch(0.97 0 0);
+	--secondary-foreground: oklch(0.205 0 0);
+	--muted: oklch(0.97 0 0);
+	--muted-foreground: oklch(0.556 0 0);
+	--accent: oklch(0.97 0 0);
+	--accent-foreground: oklch(0.205 0 0);
+	--destructive: oklch(0.577 0.245 27.325);
+	--border: oklch(0.875 0 0);
+	--input: oklch(0.92 0 0);
+	--ring: oklch(0.708 0 0);
+	--chart-1: oklch(0.646 0.222 41.116);
+	--chart-2: oklch(0.6 0.118 184.704);
+	--chart-3: oklch(0.398 0.07 227.392);
+	--chart-4: oklch(0.828 0.189 84.429);
+	--chart-5: oklch(0.769 0.188 70.08);
+	--sidebar: oklch(0.987 0 0);
+	--sidebar-foreground: oklch(0.145 0 0);
+	--sidebar-primary: oklch(0.205 0 0);
+	--sidebar-primary-foreground: oklch(0.985 0 0);
+	--sidebar-accent: oklch(0.97 0 0);
+	--sidebar-accent-foreground: oklch(0.205 0 0);
+	--sidebar-border: oklch(0.922 0 0);
+	--sidebar-ring: oklch(0.708 0 0);
+	--code-background: oklch(0.975 0 0);
+	--code-foreground: oklch(0.145 0 0);
+	--layer-popover: 1000000;
+}
+
+.dark {
+	--background: oklch(0.16 0 0);
+	--foreground: oklch(0.985 0 0);
+	--card: oklch(0.205 0 0);
+	--card-foreground: oklch(0.985 0 0);
+	--popover: oklch(0.205 0 0);
+	--popover-foreground: oklch(0.985 0 0);
+	--primary: oklch(0.922 0 0);
+	--primary-foreground: oklch(0.205 0 0);
+	--secondary: oklch(0.269 0 0);
+	--secondary-foreground: oklch(0.985 0 0);
+	--muted: oklch(0.269 0 0);
+	--muted-foreground: oklch(0.708 0 0);
+	--accent: oklch(0.269 0 0);
+	--accent-foreground: oklch(0.985 0 0);
+	--destructive: oklch(0.704 0.191 22.216);
+	--border: oklch(1 0 0 / 30%);
+	--input: oklch(1 0 0 / 30%);
+	--ring: oklch(0.556 0 0);
+	--chart-1: oklch(0.488 0.243 264.376);
+	--chart-2: oklch(0.696 0.17 162.48);
+	--chart-3: oklch(0.769 0.188 70.08);
+	--chart-4: oklch(0.627 0.265 303.9);
+	--chart-5: oklch(0.645 0.246 16.439);
+	--sidebar: oklch(0.19 0 0);
+	--sidebar-foreground: oklch(0.985 0 0);
+	--sidebar-primary: oklch(0.488 0.243 264.376);
+	--sidebar-primary-foreground: oklch(0.985 0 0);
+	--sidebar-accent: oklch(0.269 0 0);
+	--sidebar-accent-foreground: oklch(0.985 0 0);
+	--sidebar-border: oklch(1 0 0 / 10%);
+	--sidebar-ring: oklch(0.556 0 0);
+	--code-background: oklch(0.225 0 0);
+	--code-foreground: oklch(0.875 0 0);
+}
+
+@theme inline {
+	--radius-sm: calc(var(--radius) - 4px);
+	--radius-md: calc(var(--radius) - 2px);
+	--radius-lg: var(--radius);
+	--radius-xl: calc(var(--radius) + 4px);
+	--color-background: var(--background);
+	--color-foreground: var(--foreground);
+	--color-card: var(--card);
+	--color-card-foreground: var(--card-foreground);
+	--color-popover: var(--popover);
+	--color-popover-foreground: var(--popover-foreground);
+	--color-primary: var(--primary);
+	--color-primary-foreground: var(--primary-foreground);
+	--color-secondary: var(--secondary);
+	--color-secondary-foreground: var(--secondary-foreground);
+	--color-muted: var(--muted);
+	--color-muted-foreground: var(--muted-foreground);
+	--color-accent: var(--accent);
+	--color-accent-foreground: var(--accent-foreground);
+	--color-destructive: var(--destructive);
+	--color-border: var(--border);
+	--color-input: var(--input);
+	--color-ring: var(--ring);
+	--color-chart-1: var(--chart-1);
+	--color-chart-2: var(--chart-2);
+	--color-chart-3: var(--chart-3);
+	--color-chart-4: var(--chart-4);
+	--color-chart-5: var(--chart-5);
+	--color-sidebar: var(--sidebar);
+	--color-sidebar-foreground: var(--sidebar-foreground);
+	--color-sidebar-primary: var(--sidebar-primary);
+	--color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
+	--color-sidebar-accent: var(--sidebar-accent);
+	--color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
+	--color-sidebar-border: var(--sidebar-border);
+	--color-sidebar-ring: var(--sidebar-ring);
+}
+
+@layer base {
+	* {
+		@apply border-border outline-ring/50;
+	}
+	body {
+		@apply bg-background text-foreground;
+	}
+}
+
+@layer utilities {
+	.scrollbar-hide {
+		/* Hide scrollbar for Chrome, Safari and Opera */
+		&::-webkit-scrollbar {
+			display: none;
+		}
+		/* Hide scrollbar for IE, Edge and Firefox */
+		-ms-overflow-style: none;
+		scrollbar-width: none;
+	}
+}

tools/server/webui/src/app.d.ts

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+// See https://svelte.dev/docs/kit/types#app.d.ts
+// for information about these interfaces
+
+// Import chat types from dedicated module
+
+import type {
+	// API types
+	ApiChatCompletionRequest,
+	ApiChatCompletionResponse,
+	ApiChatCompletionStreamChunk,
+	ApiChatCompletionToolCall,
+	ApiChatCompletionToolCallDelta,
+	ApiChatMessageData,
+	ApiChatMessageContentPart,
+	ApiContextSizeError,
+	ApiErrorResponse,
+	ApiLlamaCppServerProps,
+	ApiModelDataEntry,
+	ApiModelListResponse,
+	ApiProcessingState,
+	ApiRouterModelMeta,
+	ApiRouterModelsLoadRequest,
+	ApiRouterModelsLoadResponse,
+	ApiRouterModelsStatusRequest,
+	ApiRouterModelsStatusResponse,
+	ApiRouterModelsListResponse,
+	ApiRouterModelsUnloadRequest,
+	ApiRouterModelsUnloadResponse,
+	// Chat types
+	ChatAttachmentDisplayItem,
+	ChatAttachmentPreviewItem,
+	ChatMessageType,
+	ChatRole,
+	ChatUploadedFile,
+	ChatMessageSiblingInfo,
+	ChatMessagePromptProgress,
+	ChatMessageTimings,
+	// Database types
+	DatabaseConversation,
+	DatabaseMessage,
+	DatabaseMessageExtra,
+	DatabaseMessageExtraAudioFile,
+	DatabaseMessageExtraImageFile,
+	DatabaseMessageExtraTextFile,
+	DatabaseMessageExtraPdfFile,
+	DatabaseMessageExtraLegacyContext,
+	ExportedConversation,
+	ExportedConversations,
+	// Model types
+	ModelModalities,
+	ModelOption,
+	// Settings types
+	SettingsChatServiceOptions,
+	SettingsConfigValue,
+	SettingsFieldConfig,
+	SettingsConfigType
+} from '$lib/types';
+
+import { ServerRole, ServerModelStatus, ModelModality } from '$lib/enums';
+
+declare global {
+	// namespace App {
+	// interface Error {}
+	// interface Locals {}
+	// interface PageData {}
+	// interface PageState {}
+	// interface Platform {}
+	// }
+
+	export {
+		// API types
+		ApiChatCompletionRequest,
+		ApiChatCompletionResponse,
+		ApiChatCompletionStreamChunk,
+		ApiChatCompletionToolCall,
+		ApiChatCompletionToolCallDelta,
+		ApiChatMessageData,
+		ApiChatMessageContentPart,
+		ApiContextSizeError,
+		ApiErrorResponse,
+		ApiLlamaCppServerProps,
+		ApiModelDataEntry,
+		ApiModelListResponse,
+		ApiProcessingState,
+		ApiRouterModelMeta,
+		ApiRouterModelsLoadRequest,
+		ApiRouterModelsLoadResponse,
+		ApiRouterModelsStatusRequest,
+		ApiRouterModelsStatusResponse,
+		ApiRouterModelsListResponse,
+		ApiRouterModelsUnloadRequest,
+		ApiRouterModelsUnloadResponse,
+		// Chat types
+		ChatAttachmentDisplayItem,
+		ChatAttachmentPreviewItem,
+		ChatMessagePromptProgress,
+		ChatMessageSiblingInfo,
+		ChatMessageTimings,
+		ChatMessageType,
+		ChatRole,
+		ChatUploadedFile,
+		// Database types
+		DatabaseConversation,
+		DatabaseMessage,
+		DatabaseMessageExtra,
+		DatabaseMessageExtraAudioFile,
+		DatabaseMessageExtraImageFile,
+		DatabaseMessageExtraTextFile,
+		DatabaseMessageExtraPdfFile,
+		DatabaseMessageExtraLegacyContext,
+		ExportedConversation,
+		ExportedConversations,
+		// Enum types
+		ModelModality,
+		ServerRole,
+		ServerModelStatus,
+		// Model types
+		ModelModalities,
+		ModelOption,
+		// Settings types
+		SettingsChatServiceOptions,
+		SettingsConfigValue,
+		SettingsFieldConfig,
+		SettingsConfigType
+	};
+}
+
+declare global {
+	interface Window {
+		idxThemeStyle?: number;
+		idxCodeBlock?: number;
+	}
+}

tools/server/webui/src/app.html

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+<!doctype html>
+<html lang="en">
+	<head>
+		<meta charset="utf-8" />
+		<link rel="icon" href="%sveltekit.assets%/favicon.svg" />
+		<meta name="viewport" content="width=device-width, initial-scale=1" />
+		%sveltekit.head%
+	</head>
+	<body data-sveltekit-preload-data="hover">
+		<div style="display: contents">%sveltekit.body%</div>
+	</body>
+</html>

tools/server/webui/src/lib/components/app/chat/ChatAttachments/ChatAttachmentPreview.svelte

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+<script lang="ts">
+	import { Button } from '$lib/components/ui/button';
+	import * as Alert from '$lib/components/ui/alert';
+	import { SyntaxHighlightedCode } from '$lib/components/app';
+	import { FileText, Image, Music, FileIcon, Eye, Info } from '@lucide/svelte';
+	import {
+		isTextFile,
+		isImageFile,
+		isPdfFile,
+		isAudioFile,
+		getLanguageFromFilename
+	} from '$lib/utils';
+	import { convertPDFToImage } from '$lib/utils/browser-only';
+	import { modelsStore } from '$lib/stores/models.svelte';
+
+	interface Props {
+		// Either an uploaded file or a stored attachment
+		uploadedFile?: ChatUploadedFile;
+		attachment?: DatabaseMessageExtra;
+		// For uploaded files
+		preview?: string;
+		name?: string;
+		textContent?: string;
+		// For checking vision modality
+		activeModelId?: string;
+	}
+
+	let { uploadedFile, attachment, preview, name, textContent, activeModelId }: Props = $props();
+
+	let hasVisionModality = $derived(
+		activeModelId ? modelsStore.modelSupportsVision(activeModelId) : false
+	);
+
+	let displayName = $derived(uploadedFile?.name || attachment?.name || name || 'Unknown File');
+
+	// Determine file type from uploaded file or attachment
+	let isAudio = $derived(isAudioFile(attachment, uploadedFile));
+	let isImage = $derived(isImageFile(attachment, uploadedFile));
+	let isPdf = $derived(isPdfFile(attachment, uploadedFile));
+	let isText = $derived(isTextFile(attachment, uploadedFile));
+
+	let displayPreview = $derived(
+		uploadedFile?.preview ||
+			(isImage && attachment && 'base64Url' in attachment ? attachment.base64Url : preview)
+	);
+
+	let displayTextContent = $derived(
+		uploadedFile?.textContent ||
+			(attachment && 'content' in attachment ? attachment.content : textContent)
+	);
+
+	let language = $derived(getLanguageFromFilename(displayName));
+
+	let IconComponent = $derived(() => {
+		if (isImage) return Image;
+		if (isText || isPdf) return FileText;
+		if (isAudio) return Music;
+
+		return FileIcon;
+	});
+
+	let pdfViewMode = $state<'text' | 'pages'>('pages');
+
+	let pdfImages = $state<string[]>([]);
+
+	let pdfImagesLoading = $state(false);
+
+	let pdfImagesError = $state<string | null>(null);
+
+	async function loadPdfImages() {
+		if (!isPdf || pdfImages.length > 0 || pdfImagesLoading) return;
+
+		pdfImagesLoading = true;
+		pdfImagesError = null;
+
+		try {
+			let file: File | null = null;
+
+			if (uploadedFile?.file) {
+				file = uploadedFile.file;
+			} else if (isPdf && attachment) {
+				// Check if we have pre-processed images
+				if (
+					'images' in attachment &&
+					attachment.images &&
+					Array.isArray(attachment.images) &&
+					attachment.images.length > 0
+				) {
+					pdfImages = attachment.images;
+					return;
+				}
+
+				// Convert base64 back to File for processing
+				if ('base64Data' in attachment && attachment.base64Data) {
+					const base64Data = attachment.base64Data;
+					const byteCharacters = atob(base64Data);
+					const byteNumbers = new Array(byteCharacters.length);
+					for (let i = 0; i < byteCharacters.length; i++) {
+						byteNumbers[i] = byteCharacters.charCodeAt(i);
+					}
+					const byteArray = new Uint8Array(byteNumbers);
+					file = new File([byteArray], displayName, { type: 'application/pdf' });
+				}
+			}
+
+			if (file) {
+				pdfImages = await convertPDFToImage(file);
+			} else {
+				throw new Error('No PDF file available for conversion');
+			}
+		} catch (error) {
+			pdfImagesError = error instanceof Error ? error.message : 'Failed to load PDF images';
+		} finally {
+			pdfImagesLoading = false;
+		}
+	}
+
+	export function reset() {
+		pdfImages = [];
+		pdfImagesLoading = false;
+		pdfImagesError = null;
+		pdfViewMode = 'pages';
+	}
+
+	$effect(() => {
+		if (isPdf && pdfViewMode === 'pages') {
+			loadPdfImages();
+		}
+	});
+</script>
+
+<div class="space-y-4">
+	<div class="flex items-center justify-end gap-6">
+		{#if isPdf}
+			<div class="flex items-center gap-2">
+				<Button
+					variant={pdfViewMode === 'text' ? 'default' : 'outline'}
+					size="sm"
+					onclick={() => (pdfViewMode = 'text')}
+					disabled={pdfImagesLoading}
+				>
+					<FileText class="mr-1 h-4 w-4" />
+
+					Text
+				</Button>
+
+				<Button
+					variant={pdfViewMode === 'pages' ? 'default' : 'outline'}
+					size="sm"
+					onclick={() => {
+						pdfViewMode = 'pages';
+						loadPdfImages();
+					}}
+					disabled={pdfImagesLoading}
+				>
+					{#if pdfImagesLoading}
+						<div
+							class="mr-1 h-4 w-4 animate-spin rounded-full border-2 border-current border-t-transparent"
+						></div>
+					{:else}
+						<Eye class="mr-1 h-4 w-4" />
+					{/if}
+
+					Pages
+				</Button>
+			</div>
+		{/if}
+	</div>
+
+	<div class="flex-1 overflow-auto">
+		{#if isImage && displayPreview}
+			<div class="flex items-center justify-center">
+				<img
+					src={displayPreview}
+					alt={displayName}
+					class="max-h-full rounded-lg object-contain shadow-lg"
+				/>
+			</div>
+		{:else if isPdf && pdfViewMode === 'pages'}
+			{#if !hasVisionModality && activeModelId}
+				<Alert.Root class="mb-4">
+					<Info class="h-4 w-4" />
+					<Alert.Title>Preview only</Alert.Title>
+					<Alert.Description>
+						<span class="inline-flex">
+							The selected model does not support vision. Only the extracted
+							<!-- svelte-ignore a11y_click_events_have_key_events -->
+							<!-- svelte-ignore a11y_no_static_element_interactions -->
+							<span class="mx-1 cursor-pointer underline" onclick={() => (pdfViewMode = 'text')}>
+								text
+							</span>
+							will be sent to the model.
+						</span>
+					</Alert.Description>
+				</Alert.Root>
+			{/if}
+
+			{#if pdfImagesLoading}
+				<div class="flex items-center justify-center p-8">
+					<div class="text-center">
+						<div
+							class="mx-auto mb-4 h-8 w-8 animate-spin rounded-full border-4 border-primary border-t-transparent"
+						></div>
+
+						<p class="text-muted-foreground">Converting PDF to images...</p>
+					</div>
+				</div>
+			{:else if pdfImagesError}
+				<div class="flex items-center justify-center p-8">
+					<div class="text-center">
+						<FileText class="mx-auto mb-4 h-16 w-16 text-muted-foreground" />
+
+						<p class="mb-4 text-muted-foreground">Failed to load PDF images</p>
+
+						<p class="text-sm text-muted-foreground">{pdfImagesError}</p>
+
+						<Button class="mt-4" onclick={() => (pdfViewMode = 'text')}>View as Text</Button>
+					</div>
+				</div>
+			{:else if pdfImages.length > 0}
+				<div class="max-h-[70vh] space-y-4 overflow-auto">
+					{#each pdfImages as image, index (image)}
+						<div class="text-center">
+							<p class="mb-2 text-sm text-muted-foreground">Page {index + 1}</p>
+
+							<img
+								src={image}
+								alt="PDF Page {index + 1}"
+								class="mx-auto max-w-full rounded-lg shadow-lg"
+							/>
+						</div>
+					{/each}
+				</div>
+			{:else}
+				<div class="flex items-center justify-center p-8">
+					<div class="text-center">
+						<FileText class="mx-auto mb-4 h-16 w-16 text-muted-foreground" />
+
+						<p class="mb-4 text-muted-foreground">No PDF pages available</p>
+					</div>
+				</div>
+			{/if}
+		{:else if (isText || (isPdf && pdfViewMode === 'text')) && displayTextContent}
+			<SyntaxHighlightedCode code={displayTextContent} {language} maxWidth="calc(69rem - 2rem)" />
+		{:else if isAudio}
+			<div class="flex items-center justify-center p-8">
+				<div class="w-full max-w-md text-center">
+					<Music class="mx-auto mb-4 h-16 w-16 text-muted-foreground" />
+
+					{#if uploadedFile?.preview}
+						<audio controls class="mb-4 w-full" src={uploadedFile.preview}>
+							Your browser does not support the audio element.
+						</audio>
+					{:else if isAudio && attachment && 'mimeType' in attachment && 'base64Data' in attachment}
+						<audio
+							controls
+							class="mb-4 w-full"
+							src={`data:${attachment.mimeType};base64,${attachment.base64Data}`}
+						>
+							Your browser does not support the audio element.
+						</audio>
+					{:else}
+						<p class="mb-4 text-muted-foreground">Audio preview not available</p>
+					{/if}
+
+					<p class="text-sm text-muted-foreground">
+						{displayName}
+					</p>
+				</div>
+			</div>
+		{:else}
+			<div class="flex items-center justify-center p-8">
+				<div class="text-center">
+					{#if IconComponent}
+						<IconComponent class="mx-auto mb-4 h-16 w-16 text-muted-foreground" />
+					{/if}
+
+					<p class="mb-4 text-muted-foreground">Preview not available for this file type</p>
+				</div>
+			</div>
+		{/if}
+	</div>
+</div>

tools/server/webui/src/lib/components/app/chat/ChatAttachments/ChatAttachmentThumbnailFile.svelte

@@ -0,0 +1,165 @@
+<script lang="ts">
+	import { RemoveButton } from '$lib/components/app';
+	import { formatFileSize, getFileTypeLabel, getPreviewText, isTextFile } from '$lib/utils';
+	import { AttachmentType } from '$lib/enums';
+
+	interface Props {
+		class?: string;
+		id: string;
+		onClick?: (event?: MouseEvent) => void;
+		onRemove?: (id: string) => void;
+		name: string;
+		readonly?: boolean;
+		size?: number;
+		textContent?: string;
+		// Either uploaded file or stored attachment
+		uploadedFile?: ChatUploadedFile;
+		attachment?: DatabaseMessageExtra;
+	}
+
+	let {
+		class: className = '',
+		id,
+		onClick,
+		onRemove,
+		name,
+		readonly = false,
+		size,
+		textContent,
+		uploadedFile,
+		attachment
+	}: Props = $props();
+
+	let isText = $derived(isTextFile(attachment, uploadedFile));
+
+	let fileTypeLabel = $derived.by(() => {
+		if (uploadedFile?.type) {
+			return getFileTypeLabel(uploadedFile.type);
+		}
+
+		if (attachment) {
+			if ('mimeType' in attachment && attachment.mimeType) {
+				return getFileTypeLabel(attachment.mimeType);
+			}
+
+			if (attachment.type) {
+				return getFileTypeLabel(attachment.type);
+			}
+		}
+
+		return getFileTypeLabel(name);
+	});
+
+	let pdfProcessingMode = $derived.by(() => {
+		if (attachment?.type === AttachmentType.PDF) {
+			const pdfAttachment = attachment as DatabaseMessageExtraPdfFile;
+
+			return pdfAttachment.processedAsImages ? 'Sent as Image' : 'Sent as Text';
+		}
+		return null;
+	});
+</script>
+
+{#if isText}
+	{#if readonly}
+		<!-- Readonly mode (ChatMessage) -->
+		<button
+			class="cursor-pointer rounded-lg border border-border bg-muted p-3 transition-shadow hover:shadow-md {className} w-full max-w-2xl"
+			onclick={onClick}
+			aria-label={`Preview ${name}`}
+			type="button"
+		>
+			<div class="flex items-start gap-3">
+				<div class="flex min-w-0 flex-1 flex-col items-start text-left">
+					<span class="w-full truncate text-sm font-medium text-foreground">{name}</span>
+
+					{#if size}
+						<span class="text-xs text-muted-foreground">{formatFileSize(size)}</span>
+					{/if}
+
+					{#if textContent}
+						<div class="relative mt-2 w-full">
+							<div
+								class="overflow-hidden font-mono text-xs leading-relaxed break-words whitespace-pre-wrap text-muted-foreground"
+							>
+								{getPreviewText(textContent)}
+							</div>
+
+							{#if textContent.length > 150}
+								<div
+									class="pointer-events-none absolute right-0 bottom-0 left-0 h-6 bg-gradient-to-t from-muted to-transparent"
+								></div>
+							{/if}
+						</div>
+					{/if}
+				</div>
+			</div>
+		</button>
+	{:else}
+		<!-- Non-readonly mode (ChatForm) -->
+		<button
+			class="group relative rounded-lg border border-border bg-muted p-3 {className} {textContent
+				? 'max-h-24 max-w-72'
+				: 'max-w-36'} cursor-pointer text-left"
+			onclick={onClick}
+		>
+			<div class="absolute top-2 right-2 opacity-0 transition-opacity group-hover:opacity-100">
+				<RemoveButton {id} {onRemove} />
+			</div>
+
+			<div class="pr-8">
+				<span class="mb-3 block truncate text-sm font-medium text-foreground">{name}</span>
+
+				{#if textContent}
+					<div class="relative">
+						<div
+							class="overflow-hidden font-mono text-xs leading-relaxed break-words whitespace-pre-wrap text-muted-foreground"
+							style="max-height: 3rem; line-height: 1.2em;"
+						>
+							{getPreviewText(textContent)}
+						</div>
+
+						{#if textContent.length > 150}
+							<div
+								class="pointer-events-none absolute right-0 bottom-0 left-0 h-4 bg-gradient-to-t from-muted to-transparent"
+							></div>
+						{/if}
+					</div>
+				{/if}
+			</div>
+		</button>
+	{/if}
+{:else}
+	<button
+		class="group flex items-center gap-3 rounded-lg border border-border bg-muted p-3 {className} relative"
+		onclick={onClick}
+	>
+		<div
+			class="flex h-8 w-8 items-center justify-center rounded bg-primary/10 text-xs font-medium text-primary"
+		>
+			{fileTypeLabel}
+		</div>
+
+		<div class="flex flex-col gap-0.5">
+			<span
+				class="max-w-24 truncate text-sm font-medium text-foreground {readonly
+					? ''
+					: 'group-hover:pr-6'} md:max-w-32"
+			>
+				{name}
+			</span>
+
+			{#if pdfProcessingMode}
+				<span class="text-left text-xs text-muted-foreground">{pdfProcessingMode}</span>
+			{:else if size}
+				<span class="text-left text-xs text-muted-foreground">{formatFileSize(size)}</span>
+			{/if}
+		</div>
+
+		{#if !readonly}
+			<div class="absolute top-2 right-2 opacity-0 transition-opacity group-hover:opacity-100">
+				<RemoveButton {id} {onRemove} />
+			</div>
+		{/if}
+	</button>
+{/if}

tools/server/webui/src/lib/components/app/chat/ChatAttachments/ChatAttachmentThumbnailImage.svelte

@@ -0,0 +1,64 @@
+<script lang="ts">
+	import { RemoveButton } from '$lib/components/app';
+
+	interface Props {
+		id: string;
+		name: string;
+		preview: string;
+		readonly?: boolean;
+		onRemove?: (id: string) => void;
+		onClick?: (event?: MouseEvent) => void;
+		class?: string;
+		// Customizable size props
+		width?: string;
+		height?: string;
+		imageClass?: string;
+	}
+
+	let {
+		id,
+		name,
+		preview,
+		readonly = false,
+		onRemove,
+		onClick,
+		class: className = '',
+		// Default to small size for form previews
+		width = 'w-auto',
+		height = 'h-16',
+		imageClass = ''
+	}: Props = $props();
+</script>
+
+<div
+	class="group relative overflow-hidden rounded-lg bg-muted shadow-lg dark:border dark:border-muted {className}"
+>
+	{#if onClick}
+		<button
+			type="button"
+			class="block h-full w-full rounded-lg focus:ring-2 focus:ring-primary focus:ring-offset-2 focus:outline-none"
+			onclick={onClick}
+			aria-label="Preview {name}"
+		>
+			<img
+				src={preview}
+				alt={name}
+				class="{height} {width} cursor-pointer object-cover {imageClass}"
+			/>
+		</button>
+	{:else}
+		<img
+			src={preview}
+			alt={name}
+			class="{height} {width} cursor-pointer object-cover {imageClass}"
+		/>
+	{/if}
+
+	{#if !readonly}
+		<div
+			class="absolute top-1 right-1 flex items-center justify-center opacity-0 transition-opacity group-hover:opacity-100"
+		>
+			<RemoveButton {id} {onRemove} class="text-white" />
+		</div>
+	{/if}
+</div>

tools/server/webui/src/lib/components/app/chat/ChatAttachments/ChatAttachmentsList.svelte

@@ -0,0 +1,243 @@
+<script lang="ts">
+	import { ChatAttachmentThumbnailImage, ChatAttachmentThumbnailFile } from '$lib/components/app';
+	import { Button } from '$lib/components/ui/button';
+	import { ChevronLeft, ChevronRight } from '@lucide/svelte';
+	import { DialogChatAttachmentPreview, DialogChatAttachmentsViewAll } from '$lib/components/app';
+	import { getAttachmentDisplayItems } from '$lib/utils';
+
+	interface Props {
+		class?: string;
+		style?: string;
+		// For ChatMessage - stored attachments
+		attachments?: DatabaseMessageExtra[];
+		readonly?: boolean;
+		// For ChatForm - pending uploads
+		onFileRemove?: (fileId: string) => void;
+		uploadedFiles?: ChatUploadedFile[];
+		// Image size customization
+		imageClass?: string;
+		imageHeight?: string;
+		imageWidth?: string;
+		// Limit display to single row with "+ X more" button
+		limitToSingleRow?: boolean;
+		// For vision modality check
+		activeModelId?: string;
+	}
+
+	let {
+		class: className = '',
+		style = '',
+		attachments = [],
+		readonly = false,
+		onFileRemove,
+		uploadedFiles = $bindable([]),
+		// Default to small size for form previews
+		imageClass = '',
+		imageHeight = 'h-24',
+		imageWidth = 'w-auto',
+		limitToSingleRow = false,
+		activeModelId
+	}: Props = $props();
+
+	let displayItems = $derived(getAttachmentDisplayItems({ uploadedFiles, attachments }));
+
+	let canScrollLeft = $state(false);
+	let canScrollRight = $state(false);
+	let isScrollable = $state(false);
+	let previewDialogOpen = $state(false);
+	let previewItem = $state<ChatAttachmentPreviewItem | null>(null);
+	let scrollContainer: HTMLDivElement | undefined = $state();
+	let showViewAll = $derived(limitToSingleRow && displayItems.length > 0 && isScrollable);
+	let viewAllDialogOpen = $state(false);
+
+	function openPreview(item: ChatAttachmentDisplayItem, event?: MouseEvent) {
+		event?.stopPropagation();
+		event?.preventDefault();
+
+		previewItem = {
+			uploadedFile: item.uploadedFile,
+			attachment: item.attachment,
+			preview: item.preview,
+			name: item.name,
+			size: item.size,
+			textContent: item.textContent
+		};
+		previewDialogOpen = true;
+	}
+
+	function scrollLeft(event?: MouseEvent) {
+		event?.stopPropagation();
+		event?.preventDefault();
+
+		if (!scrollContainer) return;
+
+		scrollContainer.scrollBy({ left: scrollContainer.clientWidth * -0.67, behavior: 'smooth' });
+	}
+
+	function scrollRight(event?: MouseEvent) {
+		event?.stopPropagation();
+		event?.preventDefault();
+
+		if (!scrollContainer) return;
+
+		scrollContainer.scrollBy({ left: scrollContainer.clientWidth * 0.67, behavior: 'smooth' });
+	}
+
+	function updateScrollButtons() {
+		if (!scrollContainer) return;
+
+		const { scrollLeft, scrollWidth, clientWidth } = scrollContainer;
+
+		canScrollLeft = scrollLeft > 0;
+		canScrollRight = scrollLeft < scrollWidth - clientWidth - 1;
+		isScrollable = scrollWidth > clientWidth;
+	}
+
+	$effect(() => {
+		if (scrollContainer && displayItems.length) {
+			scrollContainer.scrollLeft = 0;
+
+			setTimeout(() => {
+				updateScrollButtons();
+			}, 0);
+		}
+	});
+</script>
+
+{#if displayItems.length > 0}
+	<div class={className} {style}>
+		{#if limitToSingleRow}
+			<div class="relative">
+				<button
+					class="absolute top-1/2 left-4 z-10 flex h-6 w-6 -translate-y-1/2 items-center justify-center rounded-full bg-foreground/15 shadow-md backdrop-blur-xs transition-opacity hover:bg-foreground/35 {canScrollLeft
+						? 'opacity-100'
+						: 'pointer-events-none opacity-0'}"
+					onclick={scrollLeft}
+					aria-label="Scroll left"
+				>
+					<ChevronLeft class="h-4 w-4" />
+				</button>
+
+				<div
+					class="scrollbar-hide flex items-start gap-3 overflow-x-auto"
+					bind:this={scrollContainer}
+					onscroll={updateScrollButtons}
+				>
+					{#each displayItems as item (item.id)}
+						{#if item.isImage && item.preview}
+							<ChatAttachmentThumbnailImage
+								class="flex-shrink-0 cursor-pointer {limitToSingleRow
+									? 'first:ml-4 last:mr-4'
+									: ''}"
+								id={item.id}
+								name={item.name}
+								preview={item.preview}
+								{readonly}
+								onRemove={onFileRemove}
+								height={imageHeight}
+								width={imageWidth}
+								{imageClass}
+								onClick={(event) => openPreview(item, event)}
+							/>
+						{:else}
+							<ChatAttachmentThumbnailFile
+								class="flex-shrink-0 cursor-pointer {limitToSingleRow
+									? 'first:ml-4 last:mr-4'
+									: ''}"
+								id={item.id}
+								name={item.name}
+								size={item.size}
+								{readonly}
+								onRemove={onFileRemove}
+								textContent={item.textContent}
+								attachment={item.attachment}
+								uploadedFile={item.uploadedFile}
+								onClick={(event) => openPreview(item, event)}
+							/>
+						{/if}
+					{/each}
+				</div>
+
+				<button
+					class="absolute top-1/2 right-4 z-10 flex h-6 w-6 -translate-y-1/2 items-center justify-center rounded-full bg-foreground/15 shadow-md backdrop-blur-xs transition-opacity hover:bg-foreground/35 {canScrollRight
+						? 'opacity-100'
+						: 'pointer-events-none opacity-0'}"
+					onclick={scrollRight}
+					aria-label="Scroll right"
+				>
+					<ChevronRight class="h-4 w-4" />
+				</button>
+			</div>
+
+			{#if showViewAll}
+				<div class="mt-2 -mr-2 flex justify-end px-4">
+					<Button
+						type="button"
+						variant="ghost"
+						size="sm"
+						class="h-6 text-xs text-muted-foreground hover:text-foreground"
+						onclick={() => (viewAllDialogOpen = true)}
+					>
+						View all ({displayItems.length})
+					</Button>
+				</div>
+			{/if}
+		{:else}
+			<div class="flex flex-wrap items-start justify-end gap-3">
+				{#each displayItems as item (item.id)}
+					{#if item.isImage && item.preview}
+						<ChatAttachmentThumbnailImage
+							class="cursor-pointer"
+							id={item.id}
+							name={item.name}
+							preview={item.preview}
+							{readonly}
+							onRemove={onFileRemove}
+							height={imageHeight}
+							width={imageWidth}
+							{imageClass}
+							onClick={(event) => openPreview(item, event)}
+						/>
+					{:else}
+						<ChatAttachmentThumbnailFile
+							class="cursor-pointer"
+							id={item.id}
+							name={item.name}
+							size={item.size}
+							{readonly}
+							onRemove={onFileRemove}
+							textContent={item.textContent}
+							attachment={item.attachment}
+							uploadedFile={item.uploadedFile}
+							onClick={(event?: MouseEvent) => openPreview(item, event)}
+						/>
+					{/if}
+				{/each}
+			</div>
+		{/if}
+	</div>
+{/if}
+
+{#if previewItem}
+	<DialogChatAttachmentPreview
+		bind:open={previewDialogOpen}
+		uploadedFile={previewItem.uploadedFile}
+		attachment={previewItem.attachment}
+		preview={previewItem.preview}
+		name={previewItem.name}
+		size={previewItem.size}
+		textContent={previewItem.textContent}
+		{activeModelId}
+	/>
+{/if}
+
+<DialogChatAttachmentsViewAll
+	bind:open={viewAllDialogOpen}
+	{uploadedFiles}
+	{attachments}
+	{readonly}
+	{onFileRemove}
+	imageHeight="h-64"
+	{imageClass}
+	{activeModelId}
+/>

tools/server/webui/src/lib/components/app/chat/ChatAttachments/ChatAttachmentsViewAll.svelte

@@ -0,0 +1,117 @@
+<script lang="ts">
+	import {
+		ChatAttachmentThumbnailImage,
+		ChatAttachmentThumbnailFile,
+		DialogChatAttachmentPreview
+	} from '$lib/components/app';
+	import { getAttachmentDisplayItems } from '$lib/utils';
+
+	interface Props {
+		uploadedFiles?: ChatUploadedFile[];
+		attachments?: DatabaseMessageExtra[];
+		readonly?: boolean;
+		onFileRemove?: (fileId: string) => void;
+		imageHeight?: string;
+		imageWidth?: string;
+		imageClass?: string;
+		activeModelId?: string;
+	}
+
+	let {
+		uploadedFiles = [],
+		attachments = [],
+		readonly = false,
+		onFileRemove,
+		imageHeight = 'h-24',
+		imageWidth = 'w-auto',
+		imageClass = '',
+		activeModelId
+	}: Props = $props();
+
+	let previewDialogOpen = $state(false);
+	let previewItem = $state<ChatAttachmentPreviewItem | null>(null);
+
+	let displayItems = $derived(getAttachmentDisplayItems({ uploadedFiles, attachments }));
+	let imageItems = $derived(displayItems.filter((item) => item.isImage));
+	let fileItems = $derived(displayItems.filter((item) => !item.isImage));
+
+	function openPreview(item: (typeof displayItems)[0], event?: Event) {
+		if (event) {
+			event.preventDefault();
+			event.stopPropagation();
+		}
+
+		previewItem = {
+			uploadedFile: item.uploadedFile,
+			attachment: item.attachment,
+			preview: item.preview,
+			name: item.name,
+			size: item.size,
+			textContent: item.textContent
+		};
+		previewDialogOpen = true;
+	}
+</script>
+
+<div class="space-y-4">
+	<div class="min-h-0 flex-1 space-y-6 overflow-y-auto px-1">
+		{#if fileItems.length > 0}
+			<div>
+				<h3 class="mb-3 text-sm font-medium text-foreground">Files ({fileItems.length})</h3>
+				<div class="flex flex-wrap items-start gap-3">
+					{#each fileItems as item (item.id)}
+						<ChatAttachmentThumbnailFile
+							class="cursor-pointer"
+							id={item.id}
+							name={item.name}
+							size={item.size}
+							{readonly}
+							onRemove={onFileRemove}
+							textContent={item.textContent}
+							attachment={item.attachment}
+							uploadedFile={item.uploadedFile}
+							onClick={(event?: MouseEvent) => openPreview(item, event)}
+						/>
+					{/each}
+				</div>
+			</div>
+		{/if}
+
+		{#if imageItems.length > 0}
+			<div>
+				<h3 class="mb-3 text-sm font-medium text-foreground">Images ({imageItems.length})</h3>
+				<div class="flex flex-wrap items-start gap-3">
+					{#each imageItems as item (item.id)}
+						{#if item.preview}
+							<ChatAttachmentThumbnailImage
+								class="cursor-pointer"
+								id={item.id}
+								name={item.name}
+								preview={item.preview}
+								{readonly}
+								onRemove={onFileRemove}
+								height={imageHeight}
+								width={imageWidth}
+								{imageClass}
+								onClick={(event) => openPreview(item, event)}
+							/>
+						{/if}
+					{/each}
+				</div>
+			</div>
+		{/if}
+	</div>
+</div>
+
+{#if previewItem}
+	<DialogChatAttachmentPreview
+		bind:open={previewDialogOpen}
+		uploadedFile={previewItem.uploadedFile}
+		attachment={previewItem.attachment}
+		preview={previewItem.preview}
+		name={previewItem.name}
+		size={previewItem.size}
+		textContent={previewItem.textContent}
+		{activeModelId}
+	/>
+{/if}

tools/server/webui/src/lib/components/app/chat/ChatForm/ChatForm.svelte

@@ -0,0 +1,315 @@
+<script lang="ts">
+	import { afterNavigate } from '$app/navigation';
+	import {
+		ChatAttachmentsList,
+		ChatFormActions,
+		ChatFormFileInputInvisible,
+		ChatFormHelperText,
+		ChatFormTextarea
+	} from '$lib/components/app';
+	import { INPUT_CLASSES } from '$lib/constants/input-classes';
+	import { SETTING_CONFIG_DEFAULT } from '$lib/constants/settings-config';
+	import { config } from '$lib/stores/settings.svelte';
+	import { modelOptions, selectedModelId } from '$lib/stores/models.svelte';
+	import { isRouterMode } from '$lib/stores/server.svelte';
+	import { chatStore } from '$lib/stores/chat.svelte';
+	import { activeMessages } from '$lib/stores/conversations.svelte';
+	import { MimeTypeText } from '$lib/enums';
+	import { isIMEComposing, parseClipboardContent } from '$lib/utils';
+	import {
+		AudioRecorder,
+		convertToWav,
+		createAudioFile,
+		isAudioRecordingSupported
+	} from '$lib/utils/browser-only';
+	import { onMount } from 'svelte';
+
+	interface Props {
+		class?: string;
+		disabled?: boolean;
+		isLoading?: boolean;
+		onFileRemove?: (fileId: string) => void;
+		onFileUpload?: (files: File[]) => void;
+		onSend?: (message: string, files?: ChatUploadedFile[]) => Promise<boolean>;
+		onStop?: () => void;
+		showHelperText?: boolean;
+		uploadedFiles?: ChatUploadedFile[];
+	}
+
+	let {
+		class: className,
+		disabled = false,
+		isLoading = false,
+		onFileRemove,
+		onFileUpload,
+		onSend,
+		onStop,
+		showHelperText = true,
+		uploadedFiles = $bindable([])
+	}: Props = $props();
+
+	let audioRecorder: AudioRecorder | undefined;
+	let chatFormActionsRef: ChatFormActions | undefined = $state(undefined);
+	let currentConfig = $derived(config());
+	let fileInputRef: ChatFormFileInputInvisible | undefined = $state(undefined);
+	let isRecording = $state(false);
+	let message = $state('');
+	let pasteLongTextToFileLength = $derived.by(() => {
+		const n = Number(currentConfig.pasteLongTextToFileLen);
+		return Number.isNaN(n) ? Number(SETTING_CONFIG_DEFAULT.pasteLongTextToFileLen) : n;
+	});
+	let previousIsLoading = $state(isLoading);
+	let recordingSupported = $state(false);
+	let textareaRef: ChatFormTextarea | undefined = $state(undefined);
+
+	// Check if model is selected (in ROUTER mode)
+	let conversationModel = $derived(
+		chatStore.getConversationModel(activeMessages() as DatabaseMessage[])
+	);
+	let isRouter = $derived(isRouterMode());
+	let hasModelSelected = $derived(!isRouter || !!conversationModel || !!selectedModelId());
+
+	// Get active model ID for capability detection
+	let activeModelId = $derived.by(() => {
+		const options = modelOptions();
+
+		if (!isRouter) {
+			return options.length > 0 ? options[0].model : null;
+		}
+
+		// First try user-selected model
+		const selectedId = selectedModelId();
+		if (selectedId) {
+			const model = options.find((m) => m.id === selectedId);
+			if (model) return model.model;
+		}
+
+		// Fallback to conversation model
+		if (conversationModel) {
+			const model = options.find((m) => m.model === conversationModel);
+			if (model) return model.model;
+		}
+
+		return null;
+	});
+
+	function checkModelSelected(): boolean {
+		if (!hasModelSelected) {
+			// Open the model selector
+			chatFormActionsRef?.openModelSelector();
+			return false;
+		}
+
+		return true;
+	}
+
+	function handleFileSelect(files: File[]) {
+		onFileUpload?.(files);
+	}
+
+	function handleFileUpload() {
+		fileInputRef?.click();
+	}
+
+	async function handleKeydown(event: KeyboardEvent) {
+		if (event.key === 'Enter' && !event.shiftKey && !isIMEComposing(event)) {
+			event.preventDefault();
+
+			if ((!message.trim() && uploadedFiles.length === 0) || disabled || isLoading) return;
+
+			if (!checkModelSelected()) return;
+
+			const messageToSend = message.trim();
+			const filesToSend = [...uploadedFiles];
+
+			message = '';
+			uploadedFiles = [];
+
+			textareaRef?.resetHeight();
+
+			const success = await onSend?.(messageToSend, filesToSend);
+
+			if (!success) {
+				message = messageToSend;
+				uploadedFiles = filesToSend;
+			}
+		}
+	}
+
+	function handlePaste(event: ClipboardEvent) {
+		if (!event.clipboardData) return;
+
+		const files = Array.from(event.clipboardData.items)
+			.filter((item) => item.kind === 'file')
+			.map((item) => item.getAsFile())
+			.filter((file): file is File => file !== null);
+
+		if (files.length > 0) {
+			event.preventDefault();
+			onFileUpload?.(files);
+
+			return;
+		}
+
+		const text = event.clipboardData.getData(MimeTypeText.PLAIN);
+
+		if (text.startsWith('"')) {
+			const parsed = parseClipboardContent(text);
+
+			if (parsed.textAttachments.length > 0) {
+				event.preventDefault();
+
+				message = parsed.message;
+
+				const attachmentFiles = parsed.textAttachments.map(
+					(att) =>
+						new File([att.content], att.name, {
+							type: MimeTypeText.PLAIN
+						})
+				);
+
+				onFileUpload?.(attachmentFiles);
+
+				setTimeout(() => {
+					textareaRef?.focus();
+				}, 10);
+
+				return;
+			}
+		}
+
+		if (
+			text.length > 0 &&
+			pasteLongTextToFileLength > 0 &&
+			text.length > pasteLongTextToFileLength
+		) {
+			event.preventDefault();
+
+			const textFile = new File([text], 'Pasted', {
+				type: MimeTypeText.PLAIN
+			});
+
+			onFileUpload?.([textFile]);
+		}
+	}
+
+	async function handleMicClick() {
+		if (!audioRecorder || !recordingSupported) {
+			console.warn('Audio recording not supported');
+
+			return;
+		}
+
+		if (isRecording) {
+			try {
+				const audioBlob = await audioRecorder.stopRecording();
+				const wavBlob = await convertToWav(audioBlob);
+				const audioFile = createAudioFile(wavBlob);
+
+				onFileUpload?.([audioFile]);
+				isRecording = false;
+			} catch (error) {
+				console.error('Failed to stop recording:', error);
+				isRecording = false;
+			}
+		} else {
+			try {
+				await audioRecorder.startRecording();
+				isRecording = true;
+			} catch (error) {
+				console.error('Failed to start recording:', error);
+			}
+		}
+	}
+
+	function handleStop() {
+		onStop?.();
+	}
+
+	async function handleSubmit(event: SubmitEvent) {
+		event.preventDefault();
+		if ((!message.trim() && uploadedFiles.length === 0) || disabled || isLoading) return;
+
+		// Check if model is selected first
+		if (!checkModelSelected()) return;
+
+		const messageToSend = message.trim();
+		const filesToSend = [...uploadedFiles];
+
+		message = '';
+		uploadedFiles = [];
+
+		textareaRef?.resetHeight();
+
+		const success = await onSend?.(messageToSend, filesToSend);
+
+		if (!success) {
+			message = messageToSend;
+			uploadedFiles = filesToSend;
+		}
+	}
+
+	onMount(() => {
+		setTimeout(() => textareaRef?.focus(), 10);
+		recordingSupported = isAudioRecordingSupported();
+		audioRecorder = new AudioRecorder();
+	});
+
+	afterNavigate(() => {
+		setTimeout(() => textareaRef?.focus(), 10);
+	});
+
+	$effect(() => {
+		if (previousIsLoading && !isLoading) {
+			setTimeout(() => textareaRef?.focus(), 10);
+		}
+
+		previousIsLoading = isLoading;
+	});
+</script>
+
+<ChatFormFileInputInvisible bind:this={fileInputRef} onFileSelect={handleFileSelect} />
+
+<form
+	onsubmit={handleSubmit}
+	class="{INPUT_CLASSES} border-radius-bottom-none mx-auto max-w-[48rem] overflow-hidden rounded-3xl backdrop-blur-md {disabled
+		? 'cursor-not-allowed opacity-60'
+		: ''} {className}"
+	data-slot="chat-form"
+>
+	<ChatAttachmentsList
+		bind:uploadedFiles
+		{onFileRemove}
+		limitToSingleRow
+		class="py-5"
+		style="scroll-padding: 1rem;"
+		activeModelId={activeModelId ?? undefined}
+	/>
+
+	<div
+		class="flex-column relative min-h-[48px] items-center rounded-3xl px-5 py-3 shadow-sm transition-all focus-within:shadow-md"
+		onpaste={handlePaste}
+	>
+		<ChatFormTextarea
+			bind:this={textareaRef}
+			bind:value={message}
+			onKeydown={handleKeydown}
+			{disabled}
+		/>
+
+		<ChatFormActions
+			bind:this={chatFormActionsRef}
+			canSend={message.trim().length > 0 || uploadedFiles.length > 0}
+			hasText={message.trim().length > 0}
+			{disabled}
+			{isLoading}
+			{isRecording}
+			{uploadedFiles}
+			onFileUpload={handleFileUpload}
+			onMicClick={handleMicClick}
+			onStop={handleStop}
+		/>
+	</div>
+</form>
+
+<ChatFormHelperText show={showHelperText} />

tools/server/webui/src/lib/components/app/chat/ChatForm/ChatFormActions/ChatFormActionFileAttachments.svelte

@@ -0,0 +1,123 @@
+<script lang="ts">
+	import { Paperclip } from '@lucide/svelte';
+	import { Button } from '$lib/components/ui/button';
+	import * as DropdownMenu from '$lib/components/ui/dropdown-menu';
+	import * as Tooltip from '$lib/components/ui/tooltip';
+	import { FILE_TYPE_ICONS } from '$lib/constants/icons';
+
+	interface Props {
+		class?: string;
+		disabled?: boolean;
+		hasAudioModality?: boolean;
+		hasVisionModality?: boolean;
+		onFileUpload?: () => void;
+	}
+
+	let {
+		class: className = '',
+		disabled = false,
+		hasAudioModality = false,
+		hasVisionModality = false,
+		onFileUpload
+	}: Props = $props();
+
+	const fileUploadTooltipText = $derived.by(() => {
+		return !hasVisionModality
+			? 'Text files and PDFs supported. Images, audio, and video require vision models.'
+			: 'Attach files';
+	});
+</script>
+
+<div class="flex items-center gap-1 {className}">
+	<DropdownMenu.Root>
+		<DropdownMenu.Trigger name="Attach files" {disabled}>
+			<Tooltip.Root>
+				<Tooltip.Trigger>
+					<Button
+						class="file-upload-button h-8 w-8 rounded-full bg-transparent p-0 text-muted-foreground hover:bg-foreground/10 hover:text-foreground"
+						{disabled}
+						type="button"
+					>
+						<span class="sr-only">Attach files</span>
+
+						<Paperclip class="h-4 w-4" />
+					</Button>
+				</Tooltip.Trigger>
+
+				<Tooltip.Content>
+					<p>{fileUploadTooltipText}</p>
+				</Tooltip.Content>
+			</Tooltip.Root>
+		</DropdownMenu.Trigger>
+
+		<DropdownMenu.Content align="start" class="w-48">
+			<Tooltip.Root>
+				<Tooltip.Trigger class="w-full">
+					<DropdownMenu.Item
+						class="images-button flex cursor-pointer items-center gap-2"
+						disabled={!hasVisionModality}
+						onclick={() => onFileUpload?.()}
+					>
+						<FILE_TYPE_ICONS.image class="h-4 w-4" />
+
+						<span>Images</span>
+					</DropdownMenu.Item>
+				</Tooltip.Trigger>
+
+				{#if !hasVisionModality}
+					<Tooltip.Content>
+						<p>Images require vision models to be processed</p>
+					</Tooltip.Content>
+				{/if}
+			</Tooltip.Root>
+
+			<Tooltip.Root>
+				<Tooltip.Trigger class="w-full">
+					<DropdownMenu.Item
+						class="audio-button flex cursor-pointer items-center gap-2"
+						disabled={!hasAudioModality}
+						onclick={() => onFileUpload?.()}
+					>
+						<FILE_TYPE_ICONS.audio class="h-4 w-4" />
+
+						<span>Audio Files</span>
+					</DropdownMenu.Item>
+				</Tooltip.Trigger>
+
+				{#if !hasAudioModality}
+					<Tooltip.Content>
+						<p>Audio files require audio models to be processed</p>
+					</Tooltip.Content>
+				{/if}
+			</Tooltip.Root>
+
+			<DropdownMenu.Item
+				class="flex cursor-pointer items-center gap-2"
+				onclick={() => onFileUpload?.()}
+			>
+				<FILE_TYPE_ICONS.text class="h-4 w-4" />
+
+				<span>Text Files</span>
+			</DropdownMenu.Item>
+
+			<Tooltip.Root>
+				<Tooltip.Trigger class="w-full">
+					<DropdownMenu.Item
+						class="flex cursor-pointer items-center gap-2"
+						onclick={() => onFileUpload?.()}
+					>
+						<FILE_TYPE_ICONS.pdf class="h-4 w-4" />
+
+						<span>PDF Files</span>
+					</DropdownMenu.Item>
+				</Tooltip.Trigger>
+
+				{#if !hasVisionModality}
+					<Tooltip.Content>
+						<p>PDFs will be converted to text. Image-based PDFs may not work properly.</p>
+					</Tooltip.Content>
+				{/if}
+			</Tooltip.Root>
+		</DropdownMenu.Content>
+	</DropdownMenu.Root>
+</div>

tools/server/webui/src/lib/components/app/chat/ChatForm/ChatFormActions/ChatFormActionRecord.svelte

@@ -0,0 +1,52 @@
+<script lang="ts">
+	import { Mic, Square } from '@lucide/svelte';
+	import { Button } from '$lib/components/ui/button';
+	import * as Tooltip from '$lib/components/ui/tooltip';
+
+	interface Props {
+		class?: string;
+		disabled?: boolean;
+		hasAudioModality?: boolean;
+		isLoading?: boolean;
+		isRecording?: boolean;
+		onMicClick?: () => void;
+	}
+
+	let {
+		class: className = '',
+		disabled = false,
+		hasAudioModality = false,
+		isLoading = false,
+		isRecording = false,
+		onMicClick
+	}: Props = $props();
+</script>
+
+<div class="flex items-center gap-1 {className}">
+	<Tooltip.Root>
+		<Tooltip.Trigger>
+			<Button
+				class="h-8 w-8 rounded-full p-0 {isRecording
+					? 'animate-pulse bg-red-500 text-white hover:bg-red-600'
+					: ''}"
+				disabled={disabled || isLoading || !hasAudioModality}
+				onclick={onMicClick}
+				type="button"
+			>
+				<span class="sr-only">{isRecording ? 'Stop recording' : 'Start recording'}</span>
+
+				{#if isRecording}
+					<Square class="h-4 w-4 animate-pulse fill-white" />
+				{:else}
+					<Mic class="h-4 w-4" />
+				{/if}
+			</Button>
+		</Tooltip.Trigger>
+
+		{#if !hasAudioModality}
+			<Tooltip.Content>
+				<p>Current model does not support audio</p>
+			</Tooltip.Content>
+		{/if}
+	</Tooltip.Root>
+</div>

tools/server/webui/src/lib/components/app/chat/ChatForm/ChatFormActions/ChatFormActionSubmit.svelte

@@ -0,0 +1,55 @@
+<script lang="ts">
+	import { ArrowUp } from '@lucide/svelte';
+	import { Button } from '$lib/components/ui/button';
+	import * as Tooltip from '$lib/components/ui/tooltip';
+	import { cn } from '$lib/components/ui/utils';
+
+	interface Props {
+		canSend?: boolean;
+		disabled?: boolean;
+		isLoading?: boolean;
+		showErrorState?: boolean;
+		tooltipLabel?: string;
+	}
+
+	let {
+		canSend = false,
+		disabled = false,
+		isLoading = false,
+		showErrorState = false,
+		tooltipLabel
+	}: Props = $props();
+
+	let isDisabled = $derived(!canSend || disabled || isLoading);
+</script>
+
+{#snippet submitButton(props = {})}
+	<Button
+		type="submit"
+		disabled={isDisabled}
+		class={cn(
+			'h-8 w-8 rounded-full p-0',
+			showErrorState
+				? 'bg-red-400/10 text-red-400 hover:bg-red-400/20 hover:text-red-400 disabled:opacity-100'
+				: ''
+		)}
+		{...props}
+	>
+		<span class="sr-only">Send</span>
+		<ArrowUp class="h-12 w-12" />
+	</Button>
+{/snippet}
+
+{#if tooltipLabel}
+	<Tooltip.Root>
+		<Tooltip.Trigger>
+			{@render submitButton()}
+		</Tooltip.Trigger>
+
+		<Tooltip.Content>
+			<p>{tooltipLabel}</p>
+		</Tooltip.Content>
+	</Tooltip.Root>
+{:else}
+	{@render submitButton()}
+{/if}

tools/server/webui/src/lib/components/app/chat/ChatForm/ChatFormActions/ChatFormActions.svelte

@@ -0,0 +1,204 @@
+<script lang="ts">
+	import { Square } from '@lucide/svelte';
+	import { Button } from '$lib/components/ui/button';
+	import {
+		ChatFormActionFileAttachments,
+		ChatFormActionRecord,
+		ChatFormActionSubmit,
+		ModelsSelector
+	} from '$lib/components/app';
+	import { FileTypeCategory } from '$lib/enums';
+	import { getFileTypeCategory } from '$lib/utils';
+	import { config } from '$lib/stores/settings.svelte';
+	import { modelsStore, modelOptions, selectedModelId } from '$lib/stores/models.svelte';
+	import { isRouterMode } from '$lib/stores/server.svelte';
+	import { chatStore } from '$lib/stores/chat.svelte';
+	import { activeMessages, usedModalities } from '$lib/stores/conversations.svelte';
+	import { useModelChangeValidation } from '$lib/hooks/use-model-change-validation.svelte';
+
+	interface Props {
+		canSend?: boolean;
+		class?: string;
+		disabled?: boolean;
+		isLoading?: boolean;
+		isRecording?: boolean;
+		hasText?: boolean;
+		uploadedFiles?: ChatUploadedFile[];
+		onFileUpload?: () => void;
+		onMicClick?: () => void;
+		onStop?: () => void;
+	}
+
+	let {
+		canSend = false,
+		class: className = '',
+		disabled = false,
+		isLoading = false,
+		isRecording = false,
+		hasText = false,
+		uploadedFiles = [],
+		onFileUpload,
+		onMicClick,
+		onStop
+	}: Props = $props();
+
+	let currentConfig = $derived(config());
+	let isRouter = $derived(isRouterMode());
+
+	let conversationModel = $derived(
+		chatStore.getConversationModel(activeMessages() as DatabaseMessage[])
+	);
+
+	let previousConversationModel: string | null = null;
+
+	$effect(() => {
+		if (conversationModel && conversationModel !== previousConversationModel) {
+			previousConversationModel = conversationModel;
+			modelsStore.selectModelByName(conversationModel);
+		}
+	});
+
+	let activeModelId = $derived.by(() => {
+		const options = modelOptions();
+
+		if (!isRouter) {
+			return options.length > 0 ? options[0].model : null;
+		}
+
+		const selectedId = selectedModelId();
+		if (selectedId) {
+			const model = options.find((m) => m.id === selectedId);
+			if (model) return model.model;
+		}
+
+		if (conversationModel) {
+			const model = options.find((m) => m.model === conversationModel);
+			if (model) return model.model;
+		}
+
+		return null;
+	});
+
+	let modelPropsVersion = $state(0); // Used to trigger reactivity after fetch
+
+	$effect(() => {
+		if (activeModelId) {
+			const cached = modelsStore.getModelProps(activeModelId);
+
+			if (!cached) {
+				modelsStore.fetchModelProps(activeModelId).then(() => {
+					modelPropsVersion++;
+				});
+			}
+		}
+	});
+
+	let hasAudioModality = $derived.by(() => {
+		if (activeModelId) {
+			void modelPropsVersion;
+
+			return modelsStore.modelSupportsAudio(activeModelId);
+		}
+
+		return false;
+	});
+
+	let hasVisionModality = $derived.by(() => {
+		if (activeModelId) {
+			void modelPropsVersion;
+
+			return modelsStore.modelSupportsVision(activeModelId);
+		}
+
+		return false;
+	});
+
+	let hasAudioAttachments = $derived(
+		uploadedFiles.some((file) => getFileTypeCategory(file.type) === FileTypeCategory.AUDIO)
+	);
+	let shouldShowRecordButton = $derived(
+		hasAudioModality && !hasText && !hasAudioAttachments && currentConfig.autoMicOnEmpty
+	);
+
+	let hasModelSelected = $derived(!isRouter || !!conversationModel || !!selectedModelId());
+
+	let isSelectedModelInCache = $derived.by(() => {
+		if (!isRouter) return true;
+
+		if (conversationModel) {
+			return modelOptions().some((option) => option.model === conversationModel);
+		}
+
+		const currentModelId = selectedModelId();
+		if (!currentModelId) return false;
+
+		return modelOptions().some((option) => option.id === currentModelId);
+	});
+
+	let submitTooltip = $derived.by(() => {
+		if (!hasModelSelected) {
+			return 'Please select a model first';
+		}
+
+		if (!isSelectedModelInCache) {
+			return 'Selected model is not available, please select another';
+		}
+
+		return '';
+	});
+
+	let selectorModelRef: ModelsSelector | undefined = $state(undefined);
+
+	export function openModelSelector() {
+		selectorModelRef?.open();
+	}
+
+	const { handleModelChange } = useModelChangeValidation({
+		getRequiredModalities: () => usedModalities(),
+		onValidationFailure: async (previousModelId) => {
+			if (previousModelId) {
+				await modelsStore.selectModelById(previousModelId);
+			}
+		}
+	});
+</script>
+
+<div class="flex w-full items-center gap-3 {className}" style="container-type: inline-size">
+	<ChatFormActionFileAttachments
+		class="mr-auto"
+		{disabled}
+		{hasAudioModality}
+		{hasVisionModality}
+		{onFileUpload}
+	/>
+
+	<ModelsSelector
+		{disabled}
+		bind:this={selectorModelRef}
+		currentModel={conversationModel}
+		forceForegroundText={true}
+		useGlobalSelection={true}
+		onModelChange={handleModelChange}
+	/>
+
+	{#if isLoading}
+		<Button
+			type="button"
+			onclick={onStop}
+			class="h-8 w-8 bg-transparent p-0 hover:bg-destructive/20"
+		>
+			<span class="sr-only">Stop</span>
+			<Square class="h-8 w-8 fill-destructive stroke-destructive" />
+		</Button>
+	{:else if shouldShowRecordButton}
+		<ChatFormActionRecord {disabled} {hasAudioModality} {isLoading} {isRecording} {onMicClick} />
+	{:else}
+		<ChatFormActionSubmit
+			canSend={canSend && hasModelSelected && isSelectedModelInCache}
+			{disabled}
+			{isLoading}
+			tooltipLabel={submitTooltip}
+			showErrorState={hasModelSelected && !isSelectedModelInCache}
+		/>
+	{/if}
+</div>

tools/server/webui/src/lib/components/app/chat/ChatForm/ChatFormFileInputInvisible.svelte

@@ -0,0 +1,30 @@
+<script lang="ts">
+	interface Props {
+		class?: string;
+		multiple?: boolean;
+		onFileSelect?: (files: File[]) => void;
+	}
+
+	let { class: className = '', multiple = true, onFileSelect }: Props = $props();
+
+	let fileInputElement: HTMLInputElement | undefined;
+
+	export function click() {
+		fileInputElement?.click();
+	}
+
+	function handleFileSelect(event: Event) {
+		const input = event.target as HTMLInputElement;
+		if (input.files) {
+			onFileSelect?.(Array.from(input.files));
+		}
+	}
+</script>
+
+<input
+	bind:this={fileInputElement}
+	type="file"
+	{multiple}
+	onchange={handleFileSelect}
+	class="hidden {className}"
+/>

tools/server/webui/src/lib/components/app/chat/ChatForm/ChatFormHelperText.svelte

@@ -0,0 +1,17 @@
+<script lang="ts">
+	interface Props {
+		class?: string;
+		show?: boolean;
+	}
+
+	let { class: className = '', show = true }: Props = $props();
+</script>
+
+{#if show}
+	<div class="mt-4 flex items-center justify-center {className}">
+		<p class="text-xs text-muted-foreground">
+			Press <kbd class="rounded bg-muted px-1 py-0.5 font-mono text-xs">Enter</kbd> to send,
+			<kbd class="rounded bg-muted px-1 py-0.5 font-mono text-xs">Shift + Enter</kbd> for new line
+		</p>
+	</div>
+{/if}

tools/server/webui/src/lib/components/app/chat/ChatForm/ChatFormTextarea.svelte

@@ -0,0 +1,59 @@
+<script lang="ts">
+	import { autoResizeTextarea } from '$lib/utils';
+	import { onMount } from 'svelte';
+
+	interface Props {
+		class?: string;
+		disabled?: boolean;
+		onKeydown?: (event: KeyboardEvent) => void;
+		onPaste?: (event: ClipboardEvent) => void;
+		placeholder?: string;
+		value?: string;
+	}
+
+	let {
+		class: className = '',
+		disabled = false,
+		onKeydown,
+		onPaste,
+		placeholder = 'Ask anything...',
+		value = $bindable('')
+	}: Props = $props();
+
+	let textareaElement: HTMLTextAreaElement | undefined;
+
+	onMount(() => {
+		if (textareaElement) {
+			textareaElement.focus();
+		}
+	});
+
+	// Expose the textarea element for external access
+	export function getElement() {
+		return textareaElement;
+	}
+
+	export function focus() {
+		textareaElement?.focus();
+	}
+
+	export function resetHeight() {
+		if (textareaElement) {
+			textareaElement.style.height = '1rem';
+		}
+	}
+</script>
+
+<div class="flex-1 {className}">
+	<textarea
+		bind:this={textareaElement}
+		bind:value
+		class="text-md max-h-32 min-h-12 w-full resize-none border-0 bg-transparent p-0 leading-6 outline-none placeholder:text-muted-foreground focus-visible:ring-0 focus-visible:ring-offset-0"
+		class:cursor-not-allowed={disabled}
+		{disabled}
+		onkeydown={onKeydown}
+		oninput={(event) => autoResizeTextarea(event.currentTarget)}
+		onpaste={onPaste}
+		{placeholder}
+	></textarea>
+</div>

tools/server/webui/src/lib/components/app/chat/ChatMessages/ChatMessage.svelte

@@ -0,0 +1,286 @@
+<script lang="ts">
+	import { chatStore } from '$lib/stores/chat.svelte';
+	import { config } from '$lib/stores/settings.svelte';
+	import { copyToClipboard, isIMEComposing, formatMessageForClipboard } from '$lib/utils';
+	import ChatMessageAssistant from './ChatMessageAssistant.svelte';
+	import ChatMessageUser from './ChatMessageUser.svelte';
+	import ChatMessageSystem from './ChatMessageSystem.svelte';
+
+	interface Props {
+		class?: string;
+		message: DatabaseMessage;
+		onCopy?: (message: DatabaseMessage) => void;
+		onContinueAssistantMessage?: (message: DatabaseMessage) => void;
+		onDelete?: (message: DatabaseMessage) => void;
+		onEditWithBranching?: (
+			message: DatabaseMessage,
+			newContent: string,
+			newExtras?: DatabaseMessageExtra[]
+		) => void;
+		onEditWithReplacement?: (
+			message: DatabaseMessage,
+			newContent: string,
+			shouldBranch: boolean
+		) => void;
+		onEditUserMessagePreserveResponses?: (
+			message: DatabaseMessage,
+			newContent: string,
+			newExtras?: DatabaseMessageExtra[]
+		) => void;
+		onNavigateToSibling?: (siblingId: string) => void;
+		onRegenerateWithBranching?: (message: DatabaseMessage, modelOverride?: string) => void;
+		siblingInfo?: ChatMessageSiblingInfo | null;
+	}
+
+	let {
+		class: className = '',
+		message,
+		onCopy,
+		onContinueAssistantMessage,
+		onDelete,
+		onEditWithBranching,
+		onEditWithReplacement,
+		onEditUserMessagePreserveResponses,
+		onNavigateToSibling,
+		onRegenerateWithBranching,
+		siblingInfo = null
+	}: Props = $props();
+
+	let deletionInfo = $state<{
+		totalCount: number;
+		userMessages: number;
+		assistantMessages: number;
+		messageTypes: string[];
+	} | null>(null);
+	let editedContent = $state(message.content);
+	let editedExtras = $state<DatabaseMessageExtra[]>(message.extra ? [...message.extra] : []);
+	let editedUploadedFiles = $state<ChatUploadedFile[]>([]);
+	let isEditing = $state(false);
+	let showDeleteDialog = $state(false);
+	let shouldBranchAfterEdit = $state(false);
+	let textareaElement: HTMLTextAreaElement | undefined = $state();
+
+	let thinkingContent = $derived.by(() => {
+		if (message.role === 'assistant') {
+			const trimmedThinking = message.thinking?.trim();
+
+			return trimmedThinking ? trimmedThinking : null;
+		}
+		return null;
+	});
+
+	let toolCallContent = $derived.by((): ApiChatCompletionToolCall[] | string | null => {
+		if (message.role === 'assistant') {
+			const trimmedToolCalls = message.toolCalls?.trim();
+
+			if (!trimmedToolCalls) {
+				return null;
+			}
+
+			try {
+				const parsed = JSON.parse(trimmedToolCalls);
+
+				if (Array.isArray(parsed)) {
+					return parsed as ApiChatCompletionToolCall[];
+				}
+			} catch {
+				// Harmony-only path: fall back to the raw string so issues surface visibly.
+			}
+
+			return trimmedToolCalls;
+		}
+		return null;
+	});
+
+	function handleCancelEdit() {
+		isEditing = false;
+		editedContent = message.content;
+		editedExtras = message.extra ? [...message.extra] : [];
+		editedUploadedFiles = [];
+	}
+
+	function handleEditedExtrasChange(extras: DatabaseMessageExtra[]) {
+		editedExtras = extras;
+	}
+
+	function handleEditedUploadedFilesChange(files: ChatUploadedFile[]) {
+		editedUploadedFiles = files;
+	}
+
+	async function handleCopy() {
+		const asPlainText = Boolean(config().copyTextAttachmentsAsPlainText);
+		const clipboardContent = formatMessageForClipboard(message.content, message.extra, asPlainText);
+		await copyToClipboard(clipboardContent, 'Message copied to clipboard');
+		onCopy?.(message);
+	}
+
+	function handleConfirmDelete() {
+		onDelete?.(message);
+		showDeleteDialog = false;
+	}
+
+	async function handleDelete() {
+		deletionInfo = await chatStore.getDeletionInfo(message.id);
+		showDeleteDialog = true;
+	}
+
+	function handleEdit() {
+		isEditing = true;
+		editedContent = message.content;
+		editedExtras = message.extra ? [...message.extra] : [];
+		editedUploadedFiles = [];
+
+		setTimeout(() => {
+			if (textareaElement) {
+				textareaElement.focus();
+				textareaElement.setSelectionRange(
+					textareaElement.value.length,
+					textareaElement.value.length
+				);
+			}
+		}, 0);
+	}
+
+	function handleEditedContentChange(content: string) {
+		editedContent = content;
+	}
+
+	function handleEditKeydown(event: KeyboardEvent) {
+		// Check for IME composition using isComposing property and keyCode 229 (specifically for IME composition on Safari)
+		// This prevents saving edit when confirming IME word selection (e.g., Japanese/Chinese input)
+		if (event.key === 'Enter' && !event.shiftKey && !isIMEComposing(event)) {
+			event.preventDefault();
+			handleSaveEdit();
+		} else if (event.key === 'Escape') {
+			event.preventDefault();
+			handleCancelEdit();
+		}
+	}
+
+	function handleRegenerate(modelOverride?: string) {
+		onRegenerateWithBranching?.(message, modelOverride);
+	}
+
+	function handleContinue() {
+		onContinueAssistantMessage?.(message);
+	}
+
+	async function handleSaveEdit() {
+		if (message.role === 'user' || message.role === 'system') {
+			const finalExtras = await getMergedExtras();
+			onEditWithBranching?.(message, editedContent.trim(), finalExtras);
+		} else {
+			// For assistant messages, preserve exact content including trailing whitespace
+			// This is important for the Continue feature to work properly
+			onEditWithReplacement?.(message, editedContent, shouldBranchAfterEdit);
+		}
+
+		isEditing = false;
+		shouldBranchAfterEdit = false;
+		editedUploadedFiles = [];
+	}
+
+	async function handleSaveEditOnly() {
+		if (message.role === 'user') {
+			// For user messages, trim to avoid accidental whitespace
+			const finalExtras = await getMergedExtras();
+			onEditUserMessagePreserveResponses?.(message, editedContent.trim(), finalExtras);
+		}
+
+		isEditing = false;
+		editedUploadedFiles = [];
+	}
+
+	async function getMergedExtras(): Promise<DatabaseMessageExtra[]> {
+		if (editedUploadedFiles.length === 0) {
+			return editedExtras;
+		}
+
+		const { parseFilesToMessageExtras } = await import('$lib/utils/browser-only');
+		const result = await parseFilesToMessageExtras(editedUploadedFiles);
+		const newExtras = result?.extras || [];
+
+		return [...editedExtras, ...newExtras];
+	}
+
+	function handleShowDeleteDialogChange(show: boolean) {
+		showDeleteDialog = show;
+	}
+</script>
+
+{#if message.role === 'system'}
+	<ChatMessageSystem
+		bind:textareaElement
+		class={className}
+		{deletionInfo}
+		{editedContent}
+		{isEditing}
+		{message}
+		onCancelEdit={handleCancelEdit}
+		onConfirmDelete={handleConfirmDelete}
+		onCopy={handleCopy}
+		onDelete={handleDelete}
+		onEdit={handleEdit}
+		onEditKeydown={handleEditKeydown}
+		onEditedContentChange={handleEditedContentChange}
+		{onNavigateToSibling}
+		onSaveEdit={handleSaveEdit}
+		onShowDeleteDialogChange={handleShowDeleteDialogChange}
+		{showDeleteDialog}
+		{siblingInfo}
+	/>
+{:else if message.role === 'user'}
+	<ChatMessageUser
+		bind:textareaElement
+		class={className}
+		{deletionInfo}
+		{editedContent}
+		{editedExtras}
+		{editedUploadedFiles}
+		{isEditing}
+		{message}
+		onCancelEdit={handleCancelEdit}
+		onConfirmDelete={handleConfirmDelete}
+		onCopy={handleCopy}
+		onDelete={handleDelete}
+		onEdit={handleEdit}
+		onEditKeydown={handleEditKeydown}
+		onEditedContentChange={handleEditedContentChange}
+		onEditedExtrasChange={handleEditedExtrasChange}
+		onEditedUploadedFilesChange={handleEditedUploadedFilesChange}
+		{onNavigateToSibling}
+		onSaveEdit={handleSaveEdit}
+		onSaveEditOnly={handleSaveEditOnly}
+		onShowDeleteDialogChange={handleShowDeleteDialogChange}
+		{showDeleteDialog}
+		{siblingInfo}
+	/>
+{:else}
+	<ChatMessageAssistant
+		bind:textareaElement
+		class={className}
+		{deletionInfo}
+		{editedContent}
+		{isEditing}
+		{message}
+		messageContent={message.content}
+		onCancelEdit={handleCancelEdit}
+		onConfirmDelete={handleConfirmDelete}
+		onContinue={handleContinue}
+		onCopy={handleCopy}
+		onDelete={handleDelete}
+		onEdit={handleEdit}
+		onEditKeydown={handleEditKeydown}
+		onEditedContentChange={handleEditedContentChange}
+		{onNavigateToSibling}
+		onRegenerate={handleRegenerate}
+		onSaveEdit={handleSaveEdit}
+		onShowDeleteDialogChange={handleShowDeleteDialogChange}
+		{shouldBranchAfterEdit}
+		onShouldBranchAfterEditChange={(value) => (shouldBranchAfterEdit = value)}
+		{showDeleteDialog}
+		{siblingInfo}
+		{thinkingContent}
+		{toolCallContent}
+	/>
+{/if}

tools/server/webui/src/lib/components/app/chat/ChatMessages/ChatMessageActions.svelte

@@ -0,0 +1,100 @@
+<script lang="ts">
+	import { Edit, Copy, RefreshCw, Trash2, ArrowRight } from '@lucide/svelte';
+	import {
+		ActionButton,
+		ChatMessageBranchingControls,
+		DialogConfirmation
+	} from '$lib/components/app';
+
+	interface Props {
+		role: 'user' | 'assistant';
+		justify: 'start' | 'end';
+		actionsPosition: 'left' | 'right';
+		siblingInfo?: ChatMessageSiblingInfo | null;
+		showDeleteDialog: boolean;
+		deletionInfo: {
+			totalCount: number;
+			userMessages: number;
+			assistantMessages: number;
+			messageTypes: string[];
+		} | null;
+		onCopy: () => void;
+		onEdit?: () => void;
+		onRegenerate?: () => void;
+		onContinue?: () => void;
+		onDelete: () => void;
+		onConfirmDelete: () => void;
+		onNavigateToSibling?: (siblingId: string) => void;
+		onShowDeleteDialogChange: (show: boolean) => void;
+	}
+
+	let {
+		actionsPosition,
+		deletionInfo,
+		justify,
+		onCopy,
+		onEdit,
+		onConfirmDelete,
+		onContinue,
+		onDelete,
+		onNavigateToSibling,
+		onShowDeleteDialogChange,
+		onRegenerate,
+		role,
+		siblingInfo = null,
+		showDeleteDialog
+	}: Props = $props();
+
+	function handleConfirmDelete() {
+		onConfirmDelete();
+		onShowDeleteDialogChange(false);
+	}
+</script>
+
+<div class="relative {justify === 'start' ? 'mt-2' : ''} flex h-6 items-center justify-{justify}">
+	<div
+		class="absolute top-0 {actionsPosition === 'left'
+			? 'left-0'
+			: 'right-0'} flex items-center gap-2 opacity-100 transition-opacity"
+	>
+		{#if siblingInfo && siblingInfo.totalSiblings > 1}
+			<ChatMessageBranchingControls {siblingInfo} {onNavigateToSibling} />
+		{/if}
+
+		<div
+			class="pointer-events-auto inset-0 flex items-center gap-1 opacity-100 transition-all duration-150"
+		>
+			<ActionButton icon={Copy} tooltip="Copy" onclick={onCopy} />
+
+			{#if onEdit}
+				<ActionButton icon={Edit} tooltip="Edit" onclick={onEdit} />
+			{/if}
+
+			{#if role === 'assistant' && onRegenerate}
+				<ActionButton icon={RefreshCw} tooltip="Regenerate" onclick={() => onRegenerate()} />
+			{/if}
+
+			{#if role === 'assistant' && onContinue}
+				<ActionButton icon={ArrowRight} tooltip="Continue" onclick={onContinue} />
+			{/if}
+
+			<ActionButton icon={Trash2} tooltip="Delete" onclick={onDelete} />
+		</div>
+	</div>
+</div>
+
+<DialogConfirmation
+	bind:open={showDeleteDialog}
+	title="Delete Message"
+	description={deletionInfo && deletionInfo.totalCount > 1
+		? `This will delete ${deletionInfo.totalCount} messages including: ${deletionInfo.userMessages} user message${deletionInfo.userMessages > 1 ? 's' : ''} and ${deletionInfo.assistantMessages} assistant response${deletionInfo.assistantMessages > 1 ? 's' : ''}. All messages in this branch and their responses will be permanently removed. This action cannot be undone.`
+		: 'Are you sure you want to delete this message? This action cannot be undone.'}
+	confirmText={deletionInfo && deletionInfo.totalCount > 1
+		? `Delete ${deletionInfo.totalCount} Messages`
+		: 'Delete'}
+	cancelText="Cancel"
+	variant="destructive"
+	icon={Trash2}
+	onConfirm={handleConfirmDelete}
+	onCancel={() => onShowDeleteDialogChange(false)}
+/>

tools/server/webui/src/lib/components/app/chat/ChatMessages/ChatMessageAssistant.svelte

@@ -0,0 +1,418 @@
+<script lang="ts">
+	import {
+		ModelBadge,
+		ChatMessageActions,
+		ChatMessageStatistics,
+		ChatMessageThinkingBlock,
+		CopyToClipboardIcon,
+		MarkdownContent,
+		ModelsSelector
+	} from '$lib/components/app';
+	import { useProcessingState } from '$lib/hooks/use-processing-state.svelte';
+	import { useModelChangeValidation } from '$lib/hooks/use-model-change-validation.svelte';
+	import { isLoading } from '$lib/stores/chat.svelte';
+	import { autoResizeTextarea, copyToClipboard } from '$lib/utils';
+	import { fade } from 'svelte/transition';
+	import { Check, X, Wrench } from '@lucide/svelte';
+	import { Button } from '$lib/components/ui/button';
+	import { Checkbox } from '$lib/components/ui/checkbox';
+	import { INPUT_CLASSES } from '$lib/constants/input-classes';
+	import Label from '$lib/components/ui/label/label.svelte';
+	import { config } from '$lib/stores/settings.svelte';
+	import { conversationsStore } from '$lib/stores/conversations.svelte';
+	import { isRouterMode } from '$lib/stores/server.svelte';
+
+	interface Props {
+		class?: string;
+		deletionInfo: {
+			totalCount: number;
+			userMessages: number;
+			assistantMessages: number;
+			messageTypes: string[];
+		} | null;
+		editedContent?: string;
+		isEditing?: boolean;
+		message: DatabaseMessage;
+		messageContent: string | undefined;
+		onCancelEdit?: () => void;
+		onCopy: () => void;
+		onConfirmDelete: () => void;
+		onContinue?: () => void;
+		onDelete: () => void;
+		onEdit?: () => void;
+		onEditKeydown?: (event: KeyboardEvent) => void;
+		onEditedContentChange?: (content: string) => void;
+		onNavigateToSibling?: (siblingId: string) => void;
+		onRegenerate: (modelOverride?: string) => void;
+		onSaveEdit?: () => void;
+		onShowDeleteDialogChange: (show: boolean) => void;
+		onShouldBranchAfterEditChange?: (value: boolean) => void;
+		showDeleteDialog: boolean;
+		shouldBranchAfterEdit?: boolean;
+		siblingInfo?: ChatMessageSiblingInfo | null;
+		textareaElement?: HTMLTextAreaElement;
+		thinkingContent: string | null;
+		toolCallContent: ApiChatCompletionToolCall[] | string | null;
+	}
+
+	let {
+		class: className = '',
+		deletionInfo,
+		editedContent = '',
+		isEditing = false,
+		message,
+		messageContent,
+		onCancelEdit,
+		onConfirmDelete,
+		onContinue,
+		onCopy,
+		onDelete,
+		onEdit,
+		onEditKeydown,
+		onEditedContentChange,
+		onNavigateToSibling,
+		onRegenerate,
+		onSaveEdit,
+		onShowDeleteDialogChange,
+		onShouldBranchAfterEditChange,
+		showDeleteDialog,
+		shouldBranchAfterEdit = false,
+		siblingInfo = null,
+		textareaElement = $bindable(),
+		thinkingContent,
+		toolCallContent = null
+	}: Props = $props();
+
+	const toolCalls = $derived(
+		Array.isArray(toolCallContent) ? (toolCallContent as ApiChatCompletionToolCall[]) : null
+	);
+	const fallbackToolCalls = $derived(typeof toolCallContent === 'string' ? toolCallContent : null);
+
+	const processingState = useProcessingState();
+
+	let currentConfig = $derived(config());
+	let isRouter = $derived(isRouterMode());
+	let displayedModel = $derived((): string | null => {
+		if (message.model) {
+			return message.model;
+		}
+
+		return null;
+	});
+
+	const { handleModelChange } = useModelChangeValidation({
+		getRequiredModalities: () => conversationsStore.getModalitiesUpToMessage(message.id),
+		onSuccess: (modelName) => onRegenerate(modelName)
+	});
+
+	function handleCopyModel() {
+		const model = displayedModel();
+
+		void copyToClipboard(model ?? '');
+	}
+
+	$effect(() => {
+		if (isEditing && textareaElement) {
+			autoResizeTextarea(textareaElement);
+		}
+	});
+
+	$effect(() => {
+		if (isLoading() && !message?.content?.trim()) {
+			processingState.startMonitoring();
+		}
+	});
+
+	function formatToolCallBadge(toolCall: ApiChatCompletionToolCall, index: number) {
+		const callNumber = index + 1;
+		const functionName = toolCall.function?.name?.trim();
+		const label = functionName || `Call #${callNumber}`;
+
+		const payload: Record<string, unknown> = {};
+
+		const id = toolCall.id?.trim();
+		if (id) {
+			payload.id = id;
+		}
+
+		const type = toolCall.type?.trim();
+		if (type) {
+			payload.type = type;
+		}
+
+		if (toolCall.function) {
+			const fnPayload: Record<string, unknown> = {};
+
+			const name = toolCall.function.name?.trim();
+			if (name) {
+				fnPayload.name = name;
+			}
+
+			const rawArguments = toolCall.function.arguments?.trim();
+			if (rawArguments) {
+				try {
+					fnPayload.arguments = JSON.parse(rawArguments);
+				} catch {
+					fnPayload.arguments = rawArguments;
+				}
+			}
+
+			if (Object.keys(fnPayload).length > 0) {
+				payload.function = fnPayload;
+			}
+		}
+
+		const formattedPayload = JSON.stringify(payload, null, 2);
+
+		return {
+			label,
+			tooltip: formattedPayload,
+			copyValue: formattedPayload
+		};
+	}
+
+	function handleCopyToolCall(payload: string) {
+		void copyToClipboard(payload, 'Tool call copied to clipboard');
+	}
+</script>
+
+<div
+	class="text-md group w-full leading-7.5 {className}"
+	role="group"
+	aria-label="Assistant message with actions"
+>
+	{#if thinkingContent}
+		<ChatMessageThinkingBlock
+			reasoningContent={thinkingContent}
+			isStreaming={!message.timestamp}
+			hasRegularContent={!!messageContent?.trim()}
+		/>
+	{/if}
+
+	{#if message?.role === 'assistant' && isLoading() && !message?.content?.trim()}
+		<div class="mt-6 w-full max-w-[48rem]" in:fade>
+			<div class="processing-container">
+				<span class="processing-text">
+					{processingState.getPromptProgressText() ?? processingState.getProcessingMessage()}
+				</span>
+			</div>
+		</div>
+	{/if}
+
+	{#if isEditing}
+		<div class="w-full">
+			<textarea
+				bind:this={textareaElement}
+				bind:value={editedContent}
+				class="min-h-[50vh] w-full resize-y rounded-2xl px-3 py-2 text-sm {INPUT_CLASSES}"
+				onkeydown={onEditKeydown}
+				oninput={(e) => {
+					autoResizeTextarea(e.currentTarget);
+					onEditedContentChange?.(e.currentTarget.value);
+				}}
+				placeholder="Edit assistant message..."
+			></textarea>
+
+			<div class="mt-2 flex items-center justify-between">
+				<div class="flex items-center space-x-2">
+					<Checkbox
+						id="branch-after-edit"
+						bind:checked={shouldBranchAfterEdit}
+						onCheckedChange={(checked) => onShouldBranchAfterEditChange?.(checked === true)}
+					/>
+					<Label for="branch-after-edit" class="cursor-pointer text-sm text-muted-foreground">
+						Branch conversation after edit
+					</Label>
+				</div>
+				<div class="flex gap-2">
+					<Button class="h-8 px-3" onclick={onCancelEdit} size="sm" variant="outline">
+						<X class="mr-1 h-3 w-3" />
+						Cancel
+					</Button>
+
+					<Button class="h-8 px-3" onclick={onSaveEdit} disabled={!editedContent?.trim()} size="sm">
+						<Check class="mr-1 h-3 w-3" />
+						Save
+					</Button>
+				</div>
+			</div>
+		</div>
+	{:else if message.role === 'assistant'}
+		{#if config().disableReasoningFormat}
+			<pre class="raw-output">{messageContent || ''}</pre>
+		{:else}
+			<MarkdownContent content={messageContent || ''} />
+		{/if}
+	{:else}
+		<div class="text-sm whitespace-pre-wrap">
+			{messageContent}
+		</div>
+	{/if}
+
+	<div class="info my-6 grid gap-4">
+		{#if displayedModel()}
+			<div class="inline-flex flex-wrap items-start gap-2 text-xs text-muted-foreground">
+				{#if isRouter}
+					<ModelsSelector
+						currentModel={displayedModel()}
+						onModelChange={handleModelChange}
+						disabled={isLoading()}
+						upToMessageId={message.id}
+					/>
+				{:else}
+					<ModelBadge model={displayedModel() || undefined} onclick={handleCopyModel} />
+				{/if}
+
+				{#if currentConfig.showMessageStats && message.timings && message.timings.predicted_n && message.timings.predicted_ms}
+					<ChatMessageStatistics
+						promptTokens={message.timings.prompt_n}
+						promptMs={message.timings.prompt_ms}
+						predictedTokens={message.timings.predicted_n}
+						predictedMs={message.timings.predicted_ms}
+					/>
+				{:else if isLoading() && currentConfig.showMessageStats}
+					{@const liveStats = processingState.getLiveProcessingStats()}
+					{@const genStats = processingState.getLiveGenerationStats()}
+					{@const promptProgress = processingState.processingState?.promptProgress}
+					{@const isStillProcessingPrompt =
+						promptProgress && promptProgress.processed < promptProgress.total}
+
+					{#if liveStats || genStats}
+						<ChatMessageStatistics
+							isLive={true}
+							isProcessingPrompt={!!isStillProcessingPrompt}
+							promptTokens={liveStats?.tokensProcessed}
+							promptMs={liveStats?.timeMs}
+							predictedTokens={genStats?.tokensGenerated}
+							predictedMs={genStats?.timeMs}
+						/>
+					{/if}
+				{/if}
+			</div>
+		{/if}
+
+		{#if config().showToolCalls}
+			{#if (toolCalls && toolCalls.length > 0) || fallbackToolCalls}
+				<span class="inline-flex flex-wrap items-center gap-2 text-xs text-muted-foreground">
+					<span class="inline-flex items-center gap-1">
+						<Wrench class="h-3.5 w-3.5" />
+
+						<span>Tool calls:</span>
+					</span>
+
+					{#if toolCalls && toolCalls.length > 0}
+						{#each toolCalls as toolCall, index (toolCall.id ?? `${index}`)}
+							{@const badge = formatToolCallBadge(toolCall, index)}
+							<button
+								type="button"
+								class="tool-call-badge inline-flex cursor-pointer items-center gap-1 rounded-sm bg-muted-foreground/15 px-1.5 py-0.75"
+								title={badge.tooltip}
+								aria-label={`Copy tool call ${badge.label}`}
+								onclick={() => handleCopyToolCall(badge.copyValue)}
+							>
+								{badge.label}
+								<CopyToClipboardIcon
+									text={badge.copyValue}
+									ariaLabel={`Copy tool call ${badge.label}`}
+								/>
+							</button>
+						{/each}
+					{:else if fallbackToolCalls}
+						<button
+							type="button"
+							class="tool-call-badge tool-call-badge--fallback inline-flex cursor-pointer items-center gap-1 rounded-sm bg-muted-foreground/15 px-1.5 py-0.75"
+							title={fallbackToolCalls}
+							aria-label="Copy tool call payload"
+							onclick={() => handleCopyToolCall(fallbackToolCalls)}
+						>
+							{fallbackToolCalls}
+							<CopyToClipboardIcon text={fallbackToolCalls} ariaLabel="Copy tool call payload" />
+						</button>
+					{/if}
+				</span>
+			{/if}
+		{/if}
+	</div>
+
+	{#if message.timestamp && !isEditing}
+		<ChatMessageActions
+			role="assistant"
+			justify="start"
+			actionsPosition="left"
+			{siblingInfo}
+			{showDeleteDialog}
+			{deletionInfo}
+			{onCopy}
+			{onEdit}
+			{onRegenerate}
+			onContinue={currentConfig.enableContinueGeneration && !thinkingContent
+				? onContinue
+				: undefined}
+			{onDelete}
+			{onConfirmDelete}
+			{onNavigateToSibling}
+			{onShowDeleteDialogChange}
+		/>
+	{/if}
+</div>
+
+<style>
+	.processing-container {
+		display: flex;
+		flex-direction: column;
+		align-items: flex-start;
+		gap: 0.5rem;
+	}
+
+	.processing-text {
+		background: linear-gradient(
+			90deg,
+			var(--muted-foreground),
+			var(--foreground),
+			var(--muted-foreground)
+		);
+		background-size: 200% 100%;
+		background-clip: text;
+		-webkit-background-clip: text;
+		-webkit-text-fill-color: transparent;
+		animation: shine 1s linear infinite;
+		font-weight: 500;
+		font-size: 0.875rem;
+	}
+
+	@keyframes shine {
+		to {
+			background-position: -200% 0;
+		}
+	}
+
+	.raw-output {
+		width: 100%;
+		max-width: 48rem;
+		margin-top: 1.5rem;
+		padding: 1rem 1.25rem;
+		border-radius: 1rem;
+		background: hsl(var(--muted) / 0.3);
+		color: var(--foreground);
+		font-family:
+			ui-monospace, SFMono-Regular, 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas,
+			'Liberation Mono', Menlo, monospace;
+		font-size: 0.875rem;
+		line-height: 1.6;
+		white-space: pre-wrap;
+		word-break: break-word;
+	}
+
+	.tool-call-badge {
+		max-width: 12rem;
+		white-space: nowrap;
+		overflow: hidden;
+		text-overflow: ellipsis;
+	}
+
+	.tool-call-badge--fallback {
+		max-width: 20rem;
+		white-space: normal;
+		word-break: break-word;
+	}
+</style>

tools/server/webui/src/lib/components/app/chat/ChatMessages/ChatMessageBranchingControls.svelte

@@ -0,0 +1,84 @@
+<script lang="ts">
+	import { ChevronLeft, ChevronRight } from '@lucide/svelte';
+	import { Button } from '$lib/components/ui/button';
+	import * as Tooltip from '$lib/components/ui/tooltip';
+
+	interface Props {
+		class?: string;
+		siblingInfo: ChatMessageSiblingInfo | null;
+		onNavigateToSibling?: (siblingId: string) => void;
+	}
+
+	let { class: className = '', siblingInfo, onNavigateToSibling }: Props = $props();
+
+	let hasPrevious = $derived(siblingInfo && siblingInfo.currentIndex > 0);
+	let hasNext = $derived(siblingInfo && siblingInfo.currentIndex < siblingInfo.totalSiblings - 1);
+	let nextSiblingId = $derived(
+		hasNext ? siblingInfo!.siblingIds[siblingInfo!.currentIndex + 1] : null
+	);
+	let previousSiblingId = $derived(
+		hasPrevious ? siblingInfo!.siblingIds[siblingInfo!.currentIndex - 1] : null
+	);
+
+	function handleNext() {
+		if (nextSiblingId) {
+			onNavigateToSibling?.(nextSiblingId);
+		}
+	}
+
+	function handlePrevious() {
+		if (previousSiblingId) {
+			onNavigateToSibling?.(previousSiblingId);
+		}
+	}
+</script>
+
+{#if siblingInfo && siblingInfo.totalSiblings > 1}
+	<div
+		aria-label="Message version {siblingInfo.currentIndex + 1} of {siblingInfo.totalSiblings}"
+		class="flex items-center gap-1 text-xs text-muted-foreground {className}"
+		role="navigation"
+	>
+		<Tooltip.Root>
+			<Tooltip.Trigger>
+				<Button
+					aria-label="Previous message version"
+					class="h-5 w-5 p-0 {!hasPrevious ? 'cursor-not-allowed opacity-30' : ''}"
+					disabled={!hasPrevious}
+					onclick={handlePrevious}
+					size="sm"
+					variant="ghost"
+				>
+					<ChevronLeft class="h-3 w-3" />
+				</Button>
+			</Tooltip.Trigger>
+
+			<Tooltip.Content>
+				<p>Previous version</p>
+			</Tooltip.Content>
+		</Tooltip.Root>
+
+		<span class="px-1 font-mono text-xs">
+			{siblingInfo.currentIndex + 1}/{siblingInfo.totalSiblings}
+		</span>
+
+		<Tooltip.Root>
+			<Tooltip.Trigger>
+				<Button
+					aria-label="Next message version"
+					class="h-5 w-5 p-0 {!hasNext ? 'cursor-not-allowed opacity-30' : ''}"
+					disabled={!hasNext}
+					onclick={handleNext}
+					size="sm"
+					variant="ghost"
+				>
+					<ChevronRight class="h-3 w-3" />
+				</Button>
+			</Tooltip.Trigger>
+
+			<Tooltip.Content>
+				<p>Next version</p>
+			</Tooltip.Content>
+		</Tooltip.Root>
+	</div>
+{/if}

tools/server/webui/src/lib/components/app/chat/ChatMessages/ChatMessageEditForm.svelte

@@ -0,0 +1,391 @@
+<script lang="ts">
+	import { X, ArrowUp, Paperclip, AlertTriangle } from '@lucide/svelte';
+	import { Button } from '$lib/components/ui/button';
+	import { Switch } from '$lib/components/ui/switch';
+	import { ChatAttachmentsList, DialogConfirmation, ModelsSelector } from '$lib/components/app';
+	import { INPUT_CLASSES } from '$lib/constants/input-classes';
+	import { SETTING_CONFIG_DEFAULT } from '$lib/constants/settings-config';
+	import { AttachmentType, FileTypeCategory, MimeTypeText } from '$lib/enums';
+	import { config } from '$lib/stores/settings.svelte';
+	import { useModelChangeValidation } from '$lib/hooks/use-model-change-validation.svelte';
+	import { setEditModeActive, clearEditMode } from '$lib/stores/chat.svelte';
+	import { conversationsStore } from '$lib/stores/conversations.svelte';
+	import { modelsStore } from '$lib/stores/models.svelte';
+	import { isRouterMode } from '$lib/stores/server.svelte';
+	import {
+		autoResizeTextarea,
+		getFileTypeCategory,
+		getFileTypeCategoryByExtension,
+		parseClipboardContent
+	} from '$lib/utils';
+
+	interface Props {
+		messageId: string;
+		editedContent: string;
+		editedExtras?: DatabaseMessageExtra[];
+		editedUploadedFiles?: ChatUploadedFile[];
+		originalContent: string;
+		originalExtras?: DatabaseMessageExtra[];
+		showSaveOnlyOption?: boolean;
+		onCancelEdit: () => void;
+		onSaveEdit: () => void;
+		onSaveEditOnly?: () => void;
+		onEditKeydown: (event: KeyboardEvent) => void;
+		onEditedContentChange: (content: string) => void;
+		onEditedExtrasChange?: (extras: DatabaseMessageExtra[]) => void;
+		onEditedUploadedFilesChange?: (files: ChatUploadedFile[]) => void;
+		textareaElement?: HTMLTextAreaElement;
+	}
+
+	let {
+		messageId,
+		editedContent,
+		editedExtras = [],
+		editedUploadedFiles = [],
+		originalContent,
+		originalExtras = [],
+		showSaveOnlyOption = false,
+		onCancelEdit,
+		onSaveEdit,
+		onSaveEditOnly,
+		onEditKeydown,
+		onEditedContentChange,
+		onEditedExtrasChange,
+		onEditedUploadedFilesChange,
+		textareaElement = $bindable()
+	}: Props = $props();
+
+	let fileInputElement: HTMLInputElement | undefined = $state();
+	let saveWithoutRegenerate = $state(false);
+	let showDiscardDialog = $state(false);
+	let isRouter = $derived(isRouterMode());
+	let currentConfig = $derived(config());
+
+	let pasteLongTextToFileLength = $derived.by(() => {
+		const n = Number(currentConfig.pasteLongTextToFileLen);
+
+		return Number.isNaN(n) ? Number(SETTING_CONFIG_DEFAULT.pasteLongTextToFileLen) : n;
+	});
+
+	let hasUnsavedChanges = $derived.by(() => {
+		if (editedContent !== originalContent) return true;
+		if (editedUploadedFiles.length > 0) return true;
+
+		const extrasChanged =
+			editedExtras.length !== originalExtras.length ||
+			editedExtras.some((extra, i) => extra !== originalExtras[i]);
+
+		if (extrasChanged) return true;
+
+		return false;
+	});
+
+	let hasAttachments = $derived(
+		(editedExtras && editedExtras.length > 0) ||
+			(editedUploadedFiles && editedUploadedFiles.length > 0)
+	);
+
+	let canSubmit = $derived(editedContent.trim().length > 0 || hasAttachments);
+
+	function getEditedAttachmentsModalities(): ModelModalities {
+		const modalities: ModelModalities = { vision: false, audio: false };
+
+		for (const extra of editedExtras) {
+			if (extra.type === AttachmentType.IMAGE) {
+				modalities.vision = true;
+			}
+
+			if (
+				extra.type === AttachmentType.PDF &&
+				'processedAsImages' in extra &&
+				extra.processedAsImages
+			) {
+				modalities.vision = true;
+			}
+
+			if (extra.type === AttachmentType.AUDIO) {
+				modalities.audio = true;
+			}
+		}
+
+		for (const file of editedUploadedFiles) {
+			const category = getFileTypeCategory(file.type) || getFileTypeCategoryByExtension(file.name);
+			if (category === FileTypeCategory.IMAGE) {
+				modalities.vision = true;
+			}
+			if (category === FileTypeCategory.AUDIO) {
+				modalities.audio = true;
+			}
+		}
+
+		return modalities;
+	}
+
+	function getRequiredModalities(): ModelModalities {
+		const beforeModalities = conversationsStore.getModalitiesUpToMessage(messageId);
+		const editedModalities = getEditedAttachmentsModalities();
+
+		return {
+			vision: beforeModalities.vision || editedModalities.vision,
+			audio: beforeModalities.audio || editedModalities.audio
+		};
+	}
+
+	const { handleModelChange } = useModelChangeValidation({
+		getRequiredModalities,
+		onValidationFailure: async (previousModelId) => {
+			if (previousModelId) {
+				await modelsStore.selectModelById(previousModelId);
+			}
+		}
+	});
+
+	function handleFileInputChange(event: Event) {
+		const input = event.target as HTMLInputElement;
+		if (!input.files || input.files.length === 0) return;
+
+		const files = Array.from(input.files);
+
+		processNewFiles(files);
+		input.value = '';
+	}
+
+	function handleGlobalKeydown(event: KeyboardEvent) {
+		if (event.key === 'Escape') {
+			event.preventDefault();
+			attemptCancel();
+		}
+	}
+
+	function attemptCancel() {
+		if (hasUnsavedChanges) {
+			showDiscardDialog = true;
+		} else {
+			onCancelEdit();
+		}
+	}
+
+	function handleRemoveExistingAttachment(index: number) {
+		if (!onEditedExtrasChange) return;
+
+		const newExtras = [...editedExtras];
+
+		newExtras.splice(index, 1);
+		onEditedExtrasChange(newExtras);
+	}
+
+	function handleRemoveUploadedFile(fileId: string) {
+		if (!onEditedUploadedFilesChange) return;
+
+		const newFiles = editedUploadedFiles.filter((f) => f.id !== fileId);
+
+		onEditedUploadedFilesChange(newFiles);
+	}
+
+	function handleSubmit() {
+		if (!canSubmit) return;
+
+		if (saveWithoutRegenerate && onSaveEditOnly) {
+			onSaveEditOnly();
+		} else {
+			onSaveEdit();
+		}
+
+		saveWithoutRegenerate = false;
+	}
+
+	async function processNewFiles(files: File[]) {
+		if (!onEditedUploadedFilesChange) return;
+
+		const { processFilesToChatUploaded } = await import('$lib/utils/browser-only');
+		const processed = await processFilesToChatUploaded(files);
+
+		onEditedUploadedFilesChange([...editedUploadedFiles, ...processed]);
+	}
+
+	function handlePaste(event: ClipboardEvent) {
+		if (!event.clipboardData) return;
+
+		const files = Array.from(event.clipboardData.items)
+			.filter((item) => item.kind === 'file')
+			.map((item) => item.getAsFile())
+			.filter((file): file is File => file !== null);
+
+		if (files.length > 0) {
+			event.preventDefault();
+			processNewFiles(files);
+
+			return;
+		}
+
+		const text = event.clipboardData.getData(MimeTypeText.PLAIN);
+
+		if (text.startsWith('"')) {
+			const parsed = parseClipboardContent(text);
+
+			if (parsed.textAttachments.length > 0) {
+				event.preventDefault();
+				onEditedContentChange(parsed.message);
+
+				const attachmentFiles = parsed.textAttachments.map(
+					(att) =>
+						new File([att.content], att.name, {
+							type: MimeTypeText.PLAIN
+						})
+				);
+
+				processNewFiles(attachmentFiles);
+
+				setTimeout(() => {
+					textareaElement?.focus();
+				}, 10);
+
+				return;
+			}
+		}
+
+		if (
+			text.length > 0 &&
+			pasteLongTextToFileLength > 0 &&
+			text.length > pasteLongTextToFileLength
+		) {
+			event.preventDefault();
+
+			const textFile = new File([text], 'Pasted', {
+				type: MimeTypeText.PLAIN
+			});
+
+			processNewFiles([textFile]);
+		}
+	}
+
+	$effect(() => {
+		if (textareaElement) {
+			autoResizeTextarea(textareaElement);
+		}
+	});
+
+	$effect(() => {
+		setEditModeActive(processNewFiles);
+
+		return () => {
+			clearEditMode();
+		};
+	});
+</script>
+
+<svelte:window onkeydown={handleGlobalKeydown} />
+
+<input
+	bind:this={fileInputElement}
+	type="file"
+	multiple
+	class="hidden"
+	onchange={handleFileInputChange}
+/>
+
+<div
+	class="{INPUT_CLASSES} w-full max-w-[80%] overflow-hidden rounded-3xl backdrop-blur-md"
+	data-slot="edit-form"
+>
+	<ChatAttachmentsList
+		attachments={editedExtras}
+		uploadedFiles={editedUploadedFiles}
+		readonly={false}
+		onFileRemove={(fileId) => {
+			if (fileId.startsWith('attachment-')) {
+				const index = parseInt(fileId.replace('attachment-', ''), 10);
+				if (!isNaN(index) && index >= 0 && index < editedExtras.length) {
+					handleRemoveExistingAttachment(index);
+				}
+			} else {
+				handleRemoveUploadedFile(fileId);
+			}
+		}}
+		limitToSingleRow
+		class="py-5"
+		style="scroll-padding: 1rem;"
+	/>
+
+	<div class="relative min-h-[48px] px-5 py-3">
+		<textarea
+			bind:this={textareaElement}
+			bind:value={editedContent}
+			class="field-sizing-content max-h-80 min-h-10 w-full resize-none bg-transparent text-sm outline-none"
+			onkeydown={onEditKeydown}
+			oninput={(e) => {
+				autoResizeTextarea(e.currentTarget);
+				onEditedContentChange(e.currentTarget.value);
+			}}
+			onpaste={handlePaste}
+			placeholder="Edit your message..."
+		></textarea>
+
+		<div class="flex w-full items-center gap-3" style="container-type: inline-size">
+			<Button
+				class="h-8 w-8 shrink-0 rounded-full bg-transparent p-0 text-muted-foreground hover:bg-foreground/10 hover:text-foreground"
+				onclick={() => fileInputElement?.click()}
+				type="button"
+				title="Add attachment"
+			>
+				<span class="sr-only">Attach files</span>
+
+				<Paperclip class="h-4 w-4" />
+			</Button>
+
+			<div class="flex-1"></div>
+
+			{#if isRouter}
+				<ModelsSelector
+					forceForegroundText={true}
+					useGlobalSelection={true}
+					onModelChange={handleModelChange}
+				/>
+			{/if}
+
+			<Button
+				class="h-8 w-8 shrink-0 rounded-full p-0"
+				onclick={handleSubmit}
+				disabled={!canSubmit}
+				type="button"
+				title={saveWithoutRegenerate ? 'Save changes' : 'Send and regenerate'}
+			>
+				<span class="sr-only">{saveWithoutRegenerate ? 'Save' : 'Send'}</span>
+
+				<ArrowUp class="h-5 w-5" />
+			</Button>
+		</div>
+	</div>
+</div>
+
+<div class="mt-2 flex w-full max-w-[80%] items-center justify-between">
+	{#if showSaveOnlyOption && onSaveEditOnly}
+		<div class="flex items-center gap-2">
+			<Switch id="save-only-switch" bind:checked={saveWithoutRegenerate} class="scale-75" />
+
+			<label for="save-only-switch" class="cursor-pointer text-xs text-muted-foreground">
+				Update without re-sending
+			</label>
+		</div>
+	{:else}
+		<div></div>
+	{/if}
+
+	<Button class="h-7 px-3 text-xs" onclick={attemptCancel} size="sm" variant="ghost">
+		<X class="mr-1 h-3 w-3" />
+
+		Cancel
+	</Button>
+</div>
+
+<DialogConfirmation
+	bind:open={showDiscardDialog}
+	title="Discard changes?"
+	description="You have unsaved changes. Are you sure you want to discard them?"
+	confirmText="Discard"
+	cancelText="Keep editing"
+	variant="destructive"
+	icon={AlertTriangle}
+	onConfirm={onCancelEdit}
+	onCancel={() => (showDiscardDialog = false)}
+/>

tools/server/webui/src/lib/components/app/chat/ChatMessages/ChatMessageStatistics.svelte

@@ -0,0 +1,175 @@
+<script lang="ts">
+	import { Clock, Gauge, WholeWord, BookOpenText, Sparkles } from '@lucide/svelte';
+	import { BadgeChatStatistic } from '$lib/components/app';
+	import * as Tooltip from '$lib/components/ui/tooltip';
+	import { ChatMessageStatsView } from '$lib/enums';
+
+	interface Props {
+		predictedTokens?: number;
+		predictedMs?: number;
+		promptTokens?: number;
+		promptMs?: number;
+		// Live mode: when true, shows stats during streaming
+		isLive?: boolean;
+		// Whether prompt processing is still in progress
+		isProcessingPrompt?: boolean;
+		// Initial view to show (defaults to READING in live mode)
+		initialView?: ChatMessageStatsView;
+	}
+
+	let {
+		predictedTokens,
+		predictedMs,
+		promptTokens,
+		promptMs,
+		isLive = false,
+		isProcessingPrompt = false,
+		initialView = ChatMessageStatsView.GENERATION
+	}: Props = $props();
+
+	let activeView: ChatMessageStatsView = $state(initialView);
+	let hasAutoSwitchedToGeneration = $state(false);
+
+	// In live mode: auto-switch to GENERATION tab when prompt processing completes
+	$effect(() => {
+		if (isLive) {
+			// Auto-switch to generation tab only when prompt processing is done (once)
+			if (
+				!hasAutoSwitchedToGeneration &&
+				!isProcessingPrompt &&
+				predictedTokens &&
+				predictedTokens > 0
+			) {
+				activeView = ChatMessageStatsView.GENERATION;
+				hasAutoSwitchedToGeneration = true;
+			} else if (!hasAutoSwitchedToGeneration) {
+				// Stay on READING while prompt is still being processed
+				activeView = ChatMessageStatsView.READING;
+			}
+		}
+	});
+
+	let hasGenerationStats = $derived(
+		predictedTokens !== undefined &&
+			predictedTokens > 0 &&
+			predictedMs !== undefined &&
+			predictedMs > 0
+	);
+
+	let tokensPerSecond = $derived(hasGenerationStats ? (predictedTokens! / predictedMs!) * 1000 : 0);
+	let timeInSeconds = $derived(
+		predictedMs !== undefined ? (predictedMs / 1000).toFixed(2) : '0.00'
+	);
+
+	let promptTokensPerSecond = $derived(
+		promptTokens !== undefined && promptMs !== undefined && promptMs > 0
+			? (promptTokens / promptMs) * 1000
+			: undefined
+	);
+
+	let promptTimeInSeconds = $derived(
+		promptMs !== undefined ? (promptMs / 1000).toFixed(2) : undefined
+	);
+
+	let hasPromptStats = $derived(
+		promptTokens !== undefined &&
+			promptMs !== undefined &&
+			promptTokensPerSecond !== undefined &&
+			promptTimeInSeconds !== undefined
+	);
+
+	// In live mode, generation tab is disabled until we have generation stats
+	let isGenerationDisabled = $derived(isLive && !hasGenerationStats);
+</script>
+
+<div class="inline-flex items-center text-xs text-muted-foreground">
+	<div class="inline-flex items-center rounded-sm bg-muted-foreground/15 p-0.5">
+		{#if hasPromptStats || isLive}
+			<Tooltip.Root>
+				<Tooltip.Trigger>
+					<button
+						type="button"
+						class="inline-flex h-5 w-5 items-center justify-center rounded-sm transition-colors {activeView ===
+						ChatMessageStatsView.READING
+							? 'bg-background text-foreground shadow-sm'
+							: 'hover:text-foreground'}"
+						onclick={() => (activeView = ChatMessageStatsView.READING)}
+					>
+						<BookOpenText class="h-3 w-3" />
+						<span class="sr-only">Reading</span>
+					</button>
+				</Tooltip.Trigger>
+				<Tooltip.Content>
+					<p>Reading (prompt processing)</p>
+				</Tooltip.Content>
+			</Tooltip.Root>
+		{/if}
+		<Tooltip.Root>
+			<Tooltip.Trigger>
+				<button
+					type="button"
+					class="inline-flex h-5 w-5 items-center justify-center rounded-sm transition-colors {activeView ===
+					ChatMessageStatsView.GENERATION
+						? 'bg-background text-foreground shadow-sm'
+						: isGenerationDisabled
+							? 'cursor-not-allowed opacity-40'
+							: 'hover:text-foreground'}"
+					onclick={() => !isGenerationDisabled && (activeView = ChatMessageStatsView.GENERATION)}
+					disabled={isGenerationDisabled}
+				>
+					<Sparkles class="h-3 w-3" />
+					<span class="sr-only">Generation</span>
+				</button>
+			</Tooltip.Trigger>
+			<Tooltip.Content>
+				<p>
+					{isGenerationDisabled
+						? 'Generation (waiting for tokens...)'
+						: 'Generation (token output)'}
+				</p>
+			</Tooltip.Content>
+		</Tooltip.Root>
+	</div>
+
+	<div class="flex items-center gap-1 px-2">
+		{#if activeView === ChatMessageStatsView.GENERATION && hasGenerationStats}
+			<BadgeChatStatistic
+				class="bg-transparent"
+				icon={WholeWord}
+				value="{predictedTokens?.toLocaleString()} tokens"
+				tooltipLabel="Generated tokens"
+			/>
+			<BadgeChatStatistic
+				class="bg-transparent"
+				icon={Clock}
+				value="{timeInSeconds}s"
+				tooltipLabel="Generation time"
+			/>
+			<BadgeChatStatistic
+				class="bg-transparent"
+				icon={Gauge}
+				value="{tokensPerSecond.toFixed(2)} tokens/s"
+				tooltipLabel="Generation speed"
+			/>
+		{:else if hasPromptStats}
+			<BadgeChatStatistic
+				class="bg-transparent"
+				icon={WholeWord}
+				value="{promptTokens} tokens"
+				tooltipLabel="Prompt tokens"
+			/>
+			<BadgeChatStatistic
+				class="bg-transparent"
+				icon={Clock}
+				value="{promptTimeInSeconds}s"
+				tooltipLabel="Prompt processing time"
+			/>
+			<BadgeChatStatistic
+				class="bg-transparent"
+				icon={Gauge}
+				value="{promptTokensPerSecond!.toFixed(2)} tokens/s"
+				tooltipLabel="Prompt processing speed"
+			/>
+		{/if}
+	</div>
+</div>

tools/server/webui/src/lib/components/app/chat/ChatMessages/ChatMessageSystem.svelte

@@ -0,0 +1,216 @@
+<script lang="ts">
+	import { Check, X } from '@lucide/svelte';
+	import { Card } from '$lib/components/ui/card';
+	import { Button } from '$lib/components/ui/button';
+	import { MarkdownContent } from '$lib/components/app';
+	import { INPUT_CLASSES } from '$lib/constants/input-classes';
+	import { config } from '$lib/stores/settings.svelte';
+	import ChatMessageActions from './ChatMessageActions.svelte';
+
+	interface Props {
+		class?: string;
+		message: DatabaseMessage;
+		isEditing: boolean;
+		editedContent: string;
+		siblingInfo?: ChatMessageSiblingInfo | null;
+		showDeleteDialog: boolean;
+		deletionInfo: {
+			totalCount: number;
+			userMessages: number;
+			assistantMessages: number;
+			messageTypes: string[];
+		} | null;
+		onCancelEdit: () => void;
+		onSaveEdit: () => void;
+		onEditKeydown: (event: KeyboardEvent) => void;
+		onEditedContentChange: (content: string) => void;
+		onCopy: () => void;
+		onEdit: () => void;
+		onDelete: () => void;
+		onConfirmDelete: () => void;
+		onNavigateToSibling?: (siblingId: string) => void;
+		onShowDeleteDialogChange: (show: boolean) => void;
+		textareaElement?: HTMLTextAreaElement;
+	}
+
+	let {
+		class: className = '',
+		message,
+		isEditing,
+		editedContent,
+		siblingInfo = null,
+		showDeleteDialog,
+		deletionInfo,
+		onCancelEdit,
+		onSaveEdit,
+		onEditKeydown,
+		onEditedContentChange,
+		onCopy,
+		onEdit,
+		onDelete,
+		onConfirmDelete,
+		onNavigateToSibling,
+		onShowDeleteDialogChange,
+		textareaElement = $bindable()
+	}: Props = $props();
+
+	let isMultiline = $state(false);
+	let messageElement: HTMLElement | undefined = $state();
+	let isExpanded = $state(false);
+	let contentHeight = $state(0);
+	const MAX_HEIGHT = 200; // pixels
+	const currentConfig = config();
+
+	let showExpandButton = $derived(contentHeight > MAX_HEIGHT);
+
+	$effect(() => {
+		if (!messageElement || !message.content.trim()) return;
+
+		if (message.content.includes('\n')) {
+			isMultiline = true;
+		}
+
+		const resizeObserver = new ResizeObserver((entries) => {
+			for (const entry of entries) {
+				const element = entry.target as HTMLElement;
+				const estimatedSingleLineHeight = 24;
+
+				isMultiline = element.offsetHeight > estimatedSingleLineHeight * 1.5;
+				contentHeight = element.scrollHeight;
+			}
+		});
+
+		resizeObserver.observe(messageElement);
+
+		return () => {
+			resizeObserver.disconnect();
+		};
+	});
+
+	function toggleExpand() {
+		isExpanded = !isExpanded;
+	}
+</script>
+
+<div
+	aria-label="System message with actions"
+	class="group flex flex-col items-end gap-3 md:gap-2 {className}"
+	role="group"
+>
+	{#if isEditing}
+		<div class="w-full max-w-[80%]">
+			<textarea
+				bind:this={textareaElement}
+				bind:value={editedContent}
+				class="min-h-[60px] w-full resize-none rounded-2xl px-3 py-2 text-sm {INPUT_CLASSES}"
+				onkeydown={onEditKeydown}
+				oninput={(e) => onEditedContentChange(e.currentTarget.value)}
+				placeholder="Edit system message..."
+			></textarea>
+
+			<div class="mt-2 flex justify-end gap-2">
+				<Button class="h-8 px-3" onclick={onCancelEdit} size="sm" variant="outline">
+					<X class="mr-1 h-3 w-3" />
+					Cancel
+				</Button>
+
+				<Button class="h-8 px-3" onclick={onSaveEdit} disabled={!editedContent.trim()} size="sm">
+					<Check class="mr-1 h-3 w-3" />
+					Send
+				</Button>
+			</div>
+		</div>
+	{:else}
+		{#if message.content.trim()}
+			<div class="relative max-w-[80%]">
+				<button
+					class="group/expand w-full text-left {!isExpanded && showExpandButton
+						? 'cursor-pointer'
+						: 'cursor-auto'}"
+					onclick={showExpandButton && !isExpanded ? toggleExpand : undefined}
+					type="button"
+				>
+					<Card
+						class="rounded-[1.125rem] !border-2 !border-dashed !border-border/50 bg-muted px-3.75 py-1.5 data-[multiline]:py-2.5"
+						data-multiline={isMultiline ? '' : undefined}
+						style="border: 2px dashed hsl(var(--border));"
+					>
+						<div
+							class="relative overflow-hidden transition-all duration-300 {isExpanded
+								? 'cursor-text select-text'
+								: 'select-none'}"
+							style={!isExpanded && showExpandButton
+								? `max-height: ${MAX_HEIGHT}px;`
+								: 'max-height: none;'}
+						>
+							{#if currentConfig.renderUserContentAsMarkdown}
+								<div bind:this={messageElement} class="text-md {isExpanded ? 'cursor-text' : ''}">
+									<MarkdownContent class="markdown-system-content" content={message.content} />
+								</div>
+							{:else}
+								<span
+									bind:this={messageElement}
+									class="text-md whitespace-pre-wrap {isExpanded ? 'cursor-text' : ''}"
+								>
+									{message.content}
+								</span>
+							{/if}
+
+							{#if !isExpanded && showExpandButton}
+								<div
+									class="pointer-events-none absolute right-0 bottom-0 left-0 h-48 bg-gradient-to-t from-muted to-transparent"
+								></div>
+								<div
+									class="pointer-events-none absolute right-0 bottom-4 left-0 flex justify-center opacity-0 transition-opacity group-hover/expand:opacity-100"
+								>
+									<Button
+										class="rounded-full px-4 py-1.5 text-xs shadow-md"
+										size="sm"
+										variant="outline"
+									>
+										Show full system message
+									</Button>
+								</div>
+							{/if}
+						</div>
+
+						{#if isExpanded && showExpandButton}
+							<div class="mb-2 flex justify-center">
+								<Button
+									class="rounded-full px-4 py-1.5 text-xs"
+									onclick={(e) => {
+										e.stopPropagation();
+										toggleExpand();
+									}}
+									size="sm"
+									variant="outline"
+								>
+									Collapse System Message
+								</Button>
+							</div>
+						{/if}
+					</Card>
+				</button>
+			</div>
+		{/if}
+
+		{#if message.timestamp}
+			<div class="max-w-[80%]">
+				<ChatMessageActions
+					actionsPosition="right"
+					{deletionInfo}
+					justify="end"
+					{onConfirmDelete}
+					{onCopy}
+					{onDelete}
+					{onEdit}
+					{onNavigateToSibling}
+					{onShowDeleteDialogChange}
+					{siblingInfo}
+					{showDeleteDialog}
+					role="user"
+				/>
+			</div>
+		{/if}
+	{/if}
+</div>

tools/server/webui/src/lib/components/app/chat/ChatMessages/ChatMessageThinkingBlock.svelte

@@ -0,0 +1,68 @@
+<script lang="ts">
+	import { Brain } from '@lucide/svelte';
+	import ChevronsUpDownIcon from '@lucide/svelte/icons/chevrons-up-down';
+	import * as Collapsible from '$lib/components/ui/collapsible/index.js';
+	import { buttonVariants } from '$lib/components/ui/button/index.js';
+	import { Card } from '$lib/components/ui/card';
+	import { config } from '$lib/stores/settings.svelte';
+
+	interface Props {
+		class?: string;
+		hasRegularContent?: boolean;
+		isStreaming?: boolean;
+		reasoningContent: string | null;
+	}
+
+	let {
+		class: className = '',
+		hasRegularContent = false,
+		isStreaming = false,
+		reasoningContent
+	}: Props = $props();
+
+	const currentConfig = config();
+
+	let isExpanded = $state(currentConfig.showThoughtInProgress);
+
+	$effect(() => {
+		if (hasRegularContent && reasoningContent && currentConfig.showThoughtInProgress) {
+			isExpanded = false;
+		}
+	});
+</script>
+
+<Collapsible.Root bind:open={isExpanded} class="mb-6 {className}">
+	<Card class="gap-0 border-muted bg-muted/30 py-0">
+		<Collapsible.Trigger class="flex cursor-pointer items-center justify-between p-3">
+			<div class="flex items-center gap-2 text-muted-foreground">
+				<Brain class="h-4 w-4" />
+
+				<span class="text-sm font-medium">
+					{isStreaming ? 'Reasoning...' : 'Reasoning'}
+				</span>
+			</div>
+
+			<div
+				class={buttonVariants({
+					variant: 'ghost',
+					size: 'sm',
+					class: 'h-6 w-6 p-0 text-muted-foreground hover:text-foreground'
+				})}
+			>
+				<ChevronsUpDownIcon class="h-4 w-4" />
+
+				<span class="sr-only">Toggle reasoning content</span>
+			</div>
+		</Collapsible.Trigger>
+
+		<Collapsible.Content>
+			<div class="border-t border-muted px-3 pb-3">
+				<div class="pt-3">
+					<div class="text-xs leading-relaxed break-words whitespace-pre-wrap">
+						{reasoningContent ?? ''}
+					</div>
+				</div>
+			</div>
+		</Collapsible.Content>
+	</Card>
+</Collapsible.Root>

tools/server/webui/src/lib/components/app/chat/ChatMessages/ChatMessageUser.svelte

@@ -0,0 +1,163 @@
+<script lang="ts">
+	import { Card } from '$lib/components/ui/card';
+	import { ChatAttachmentsList, MarkdownContent } from '$lib/components/app';
+	import { config } from '$lib/stores/settings.svelte';
+	import ChatMessageActions from './ChatMessageActions.svelte';
+	import ChatMessageEditForm from './ChatMessageEditForm.svelte';
+
+	interface Props {
+		class?: string;
+		message: DatabaseMessage;
+		isEditing: boolean;
+		editedContent: string;
+		editedExtras?: DatabaseMessageExtra[];
+		editedUploadedFiles?: ChatUploadedFile[];
+		siblingInfo?: ChatMessageSiblingInfo | null;
+		showDeleteDialog: boolean;
+		deletionInfo: {
+			totalCount: number;
+			userMessages: number;
+			assistantMessages: number;
+			messageTypes: string[];
+		} | null;
+		onCancelEdit: () => void;
+		onSaveEdit: () => void;
+		onSaveEditOnly?: () => void;
+		onEditKeydown: (event: KeyboardEvent) => void;
+		onEditedContentChange: (content: string) => void;
+		onEditedExtrasChange?: (extras: DatabaseMessageExtra[]) => void;
+		onEditedUploadedFilesChange?: (files: ChatUploadedFile[]) => void;
+		onCopy: () => void;
+		onEdit: () => void;
+		onDelete: () => void;
+		onConfirmDelete: () => void;
+		onNavigateToSibling?: (siblingId: string) => void;
+		onShowDeleteDialogChange: (show: boolean) => void;
+		textareaElement?: HTMLTextAreaElement;
+	}
+
+	let {
+		class: className = '',
+		message,
+		isEditing,
+		editedContent,
+		editedExtras = [],
+		editedUploadedFiles = [],
+		siblingInfo = null,
+		showDeleteDialog,
+		deletionInfo,
+		onCancelEdit,
+		onSaveEdit,
+		onSaveEditOnly,
+		onEditKeydown,
+		onEditedContentChange,
+		onEditedExtrasChange,
+		onEditedUploadedFilesChange,
+		onCopy,
+		onEdit,
+		onDelete,
+		onConfirmDelete,
+		onNavigateToSibling,
+		onShowDeleteDialogChange,
+		textareaElement = $bindable()
+	}: Props = $props();
+
+	let isMultiline = $state(false);
+	let messageElement: HTMLElement | undefined = $state();
+	const currentConfig = config();
+
+	$effect(() => {
+		if (!messageElement || !message.content.trim()) return;
+
+		if (message.content.includes('\n')) {
+			isMultiline = true;
+			return;
+		}
+
+		const resizeObserver = new ResizeObserver((entries) => {
+			for (const entry of entries) {
+				const element = entry.target as HTMLElement;
+				const estimatedSingleLineHeight = 24; // Typical line height for text-md
+
+				isMultiline = element.offsetHeight > estimatedSingleLineHeight * 1.5;
+			}
+		});
+
+		resizeObserver.observe(messageElement);
+
+		return () => {
+			resizeObserver.disconnect();
+		};
+	});
+</script>
+
+<div
+	aria-label="User message with actions"
+	class="group flex flex-col items-end gap-3 md:gap-2 {className}"
+	role="group"
+>
+	{#if isEditing}
+		<ChatMessageEditForm
+			bind:textareaElement
+			messageId={message.id}
+			{editedContent}
+			{editedExtras}
+			{editedUploadedFiles}
+			originalContent={message.content}
+			originalExtras={message.extra}
+			showSaveOnlyOption={!!onSaveEditOnly}
+			{onCancelEdit}
+			{onSaveEdit}
+			{onSaveEditOnly}
+			{onEditKeydown}
+			{onEditedContentChange}
+			{onEditedExtrasChange}
+			{onEditedUploadedFilesChange}
+		/>
+	{:else}
+		{#if message.extra && message.extra.length > 0}
+			<div class="mb-2 max-w-[80%]">
+				<ChatAttachmentsList attachments={message.extra} readonly={true} imageHeight="h-80" />
+			</div>
+		{/if}
+
+		{#if message.content.trim()}
+			<Card
+				class="max-w-[80%] rounded-[1.125rem] border-none bg-primary px-3.75 py-1.5 text-primary-foreground data-[multiline]:py-2.5"
+				data-multiline={isMultiline ? '' : undefined}
+			>
+				{#if currentConfig.renderUserContentAsMarkdown}
+					<div bind:this={messageElement} class="text-md">
+						<MarkdownContent
+							class="markdown-user-content text-primary-foreground"
+							content={message.content}
+						/>
+					</div>
+				{:else}
+					<span bind:this={messageElement} class="text-md whitespace-pre-wrap">
+						{message.content}
+					</span>
+				{/if}
+			</Card>
+		{/if}
+
+		{#if message.timestamp}
+			<div class="max-w-[80%]">
+				<ChatMessageActions
+					actionsPosition="right"
+					{deletionInfo}
+					justify="end"
+					{onConfirmDelete}
+					{onCopy}
+					{onDelete}
+					{onEdit}
+					{onNavigateToSibling}
+					{onShowDeleteDialogChange}
+					{siblingInfo}
+					{showDeleteDialog}
+					role="user"
+				/>
+			</div>
+		{/if}
+	{/if}
+</div>

tools/server/webui/src/lib/components/app/chat/ChatMessages/ChatMessages.svelte

@@ -0,0 +1,143 @@
+<script lang="ts">
+	import { ChatMessage } from '$lib/components/app';
+	import { chatStore } from '$lib/stores/chat.svelte';
+	import { conversationsStore, activeConversation } from '$lib/stores/conversations.svelte';
+	import { config } from '$lib/stores/settings.svelte';
+	import { getMessageSiblings } from '$lib/utils';
+
+	interface Props {
+		class?: string;
+		messages?: DatabaseMessage[];
+		onUserAction?: () => void;
+	}
+
+	let { class: className, messages = [], onUserAction }: Props = $props();
+
+	let allConversationMessages = $state<DatabaseMessage[]>([]);
+	const currentConfig = config();
+
+	function refreshAllMessages() {
+		const conversation = activeConversation();
+
+		if (conversation) {
+			conversationsStore.getConversationMessages(conversation.id).then((messages) => {
+				allConversationMessages = messages;
+			});
+		} else {
+			allConversationMessages = [];
+		}
+	}
+
+	// Single effect that tracks both conversation and message changes
+	$effect(() => {
+		const conversation = activeConversation();
+
+		if (conversation) {
+			refreshAllMessages();
+		}
+	});
+
+	let displayMessages = $derived.by(() => {
+		if (!messages.length) {
+			return [];
+		}
+
+		// Filter out system messages if showSystemMessage is false
+		const filteredMessages = currentConfig.showSystemMessage
+			? messages
+			: messages.filter((msg) => msg.type !== 'system');
+
+		return filteredMessages.map((message) => {
+			const siblingInfo = getMessageSiblings(allConversationMessages, message.id);
+
+			return {
+				message,
+				siblingInfo: siblingInfo || {
+					message,
+					siblingIds: [message.id],
+					currentIndex: 0,
+					totalSiblings: 1
+				}
+			};
+		});
+	});
+
+	async function handleNavigateToSibling(siblingId: string) {
+		await conversationsStore.navigateToSibling(siblingId);
+	}
+
+	async function handleEditWithBranching(
+		message: DatabaseMessage,
+		newContent: string,
+		newExtras?: DatabaseMessageExtra[]
+	) {
+		onUserAction?.();
+
+		await chatStore.editMessageWithBranching(message.id, newContent, newExtras);
+
+		refreshAllMessages();
+	}
+
+	async function handleEditWithReplacement(
+		message: DatabaseMessage,
+		newContent: string,
+		shouldBranch: boolean
+	) {
+		onUserAction?.();
+
+		await chatStore.editAssistantMessage(message.id, newContent, shouldBranch);
+
+		refreshAllMessages();
+	}
+
+	async function handleRegenerateWithBranching(message: DatabaseMessage, modelOverride?: string) {
+		onUserAction?.();
+
+		await chatStore.regenerateMessageWithBranching(message.id, modelOverride);
+
+		refreshAllMessages();
+	}
+
+	async function handleContinueAssistantMessage(message: DatabaseMessage) {
+		onUserAction?.();
+
+		await chatStore.continueAssistantMessage(message.id);
+
+		refreshAllMessages();
+	}
+
+	async function handleEditUserMessagePreserveResponses(
+		message: DatabaseMessage,
+		newContent: string,
+		newExtras?: DatabaseMessageExtra[]
+	) {
+		onUserAction?.();
+
+		await chatStore.editUserMessagePreserveResponses(message.id, newContent, newExtras);
+
+		refreshAllMessages();
+	}
+
+	async function handleDeleteMessage(message: DatabaseMessage) {
+		await chatStore.deleteMessage(message.id);
+
+		refreshAllMessages();
+	}
+</script>
+
+<div class="flex h-full flex-col space-y-10 pt-16 md:pt-24 {className}" style="height: auto; ">
+	{#each displayMessages as { message, siblingInfo } (message.id)}
+		<ChatMessage
+			class="mx-auto w-full max-w-[48rem]"
+			{message}
+			{siblingInfo}
+			onDelete={handleDeleteMessage}
+			onNavigateToSibling={handleNavigateToSibling}
+			onEditWithBranching={handleEditWithBranching}
+			onEditWithReplacement={handleEditWithReplacement}
+			onEditUserMessagePreserveResponses={handleEditUserMessagePreserveResponses}
+			onRegenerateWithBranching={handleRegenerateWithBranching}
+			onContinueAssistantMessage={handleContinueAssistantMessage}
+		/>
+	{/each}
+</div>

tools/server/webui/src/lib/components/app/chat/ChatScreen/ChatScreen.svelte

@@ -0,0 +1,617 @@
+<script lang="ts">
+	import { afterNavigate } from '$app/navigation';
+	import {
+		ChatForm,
+		ChatScreenHeader,
+		ChatMessages,
+		ChatScreenProcessingInfo,
+		DialogEmptyFileAlert,
+		DialogChatError,
+		ServerLoadingSplash,
+		DialogConfirmation
+	} from '$lib/components/app';
+	import * as Alert from '$lib/components/ui/alert';
+	import * as AlertDialog from '$lib/components/ui/alert-dialog';
+	import {
+		AUTO_SCROLL_AT_BOTTOM_THRESHOLD,
+		AUTO_SCROLL_INTERVAL,
+		INITIAL_SCROLL_DELAY
+	} from '$lib/constants/auto-scroll';
+	import {
+		chatStore,
+		errorDialog,
+		isLoading,
+		isEditing,
+		getAddFilesHandler
+	} from '$lib/stores/chat.svelte';
+	import {
+		conversationsStore,
+		activeMessages,
+		activeConversation
+	} from '$lib/stores/conversations.svelte';
+	import { config } from '$lib/stores/settings.svelte';
+	import { serverLoading, serverError, serverStore, isRouterMode } from '$lib/stores/server.svelte';
+	import { modelsStore, modelOptions, selectedModelId } from '$lib/stores/models.svelte';
+	import { isFileTypeSupported, filterFilesByModalities } from '$lib/utils';
+	import { parseFilesToMessageExtras, processFilesToChatUploaded } from '$lib/utils/browser-only';
+	import { onMount } from 'svelte';
+	import { fade, fly, slide } from 'svelte/transition';
+	import { Trash2, AlertTriangle, RefreshCw } from '@lucide/svelte';
+	import ChatScreenDragOverlay from './ChatScreenDragOverlay.svelte';
+
+	let { showCenteredEmpty = false } = $props();
+
+	let disableAutoScroll = $derived(Boolean(config().disableAutoScroll));
+	let autoScrollEnabled = $state(true);
+	let chatScrollContainer: HTMLDivElement | undefined = $state();
+	let dragCounter = $state(0);
+	let isDragOver = $state(false);
+	let lastScrollTop = $state(0);
+	let scrollInterval: ReturnType<typeof setInterval> | undefined;
+	let scrollTimeout: ReturnType<typeof setTimeout> | undefined;
+	let showFileErrorDialog = $state(false);
+	let uploadedFiles = $state<ChatUploadedFile[]>([]);
+	let userScrolledUp = $state(false);
+
+	let fileErrorData = $state<{
+		generallyUnsupported: File[];
+		modalityUnsupported: File[];
+		modalityReasons: Record<string, string>;
+		supportedTypes: string[];
+	}>({
+		generallyUnsupported: [],
+		modalityUnsupported: [],
+		modalityReasons: {},
+		supportedTypes: []
+	});
+
+	let showDeleteDialog = $state(false);
+
+	let showEmptyFileDialog = $state(false);
+
+	let emptyFileNames = $state<string[]>([]);
+
+	let isEmpty = $derived(
+		showCenteredEmpty && !activeConversation() && activeMessages().length === 0 && !isLoading()
+	);
+
+	let activeErrorDialog = $derived(errorDialog());
+	let isServerLoading = $derived(serverLoading());
+	let hasPropsError = $derived(!!serverError());
+
+	let isCurrentConversationLoading = $derived(isLoading());
+
+	let isRouter = $derived(isRouterMode());
+
+	let conversationModel = $derived(
+		chatStore.getConversationModel(activeMessages() as DatabaseMessage[])
+	);
+
+	let activeModelId = $derived.by(() => {
+		const options = modelOptions();
+
+		if (!isRouter) {
+			return options.length > 0 ? options[0].model : null;
+		}
+
+		const selectedId = selectedModelId();
+		if (selectedId) {
+			const model = options.find((m) => m.id === selectedId);
+			if (model) return model.model;
+		}
+
+		if (conversationModel) {
+			const model = options.find((m) => m.model === conversationModel);
+			if (model) return model.model;
+		}
+
+		return null;
+	});
+
+	let modelPropsVersion = $state(0);
+
+	$effect(() => {
+		if (activeModelId) {
+			const cached = modelsStore.getModelProps(activeModelId);
+			if (!cached) {
+				modelsStore.fetchModelProps(activeModelId).then(() => {
+					modelPropsVersion++;
+				});
+			}
+		}
+	});
+
+	let hasAudioModality = $derived.by(() => {
+		if (activeModelId) {
+			void modelPropsVersion;
+			return modelsStore.modelSupportsAudio(activeModelId);
+		}
+
+		return false;
+	});
+
+	let hasVisionModality = $derived.by(() => {
+		if (activeModelId) {
+			void modelPropsVersion;
+
+			return modelsStore.modelSupportsVision(activeModelId);
+		}
+
+		return false;
+	});
+
+	async function handleDeleteConfirm() {
+		const conversation = activeConversation();
+
+		if (conversation) {
+			await conversationsStore.deleteConversation(conversation.id);
+		}
+
+		showDeleteDialog = false;
+	}
+
+	function handleDragEnter(event: DragEvent) {
+		event.preventDefault();
+
+		dragCounter++;
+
+		if (event.dataTransfer?.types.includes('Files')) {
+			isDragOver = true;
+		}
+	}
+
+	function handleDragLeave(event: DragEvent) {
+		event.preventDefault();
+
+		dragCounter--;
+
+		if (dragCounter === 0) {
+			isDragOver = false;
+		}
+	}
+
+	function handleErrorDialogOpenChange(open: boolean) {
+		if (!open) {
+			chatStore.dismissErrorDialog();
+		}
+	}
+
+	function handleDragOver(event: DragEvent) {
+		event.preventDefault();
+	}
+
+	function handleDrop(event: DragEvent) {
+		event.preventDefault();
+
+		isDragOver = false;
+		dragCounter = 0;
+
+		if (event.dataTransfer?.files) {
+			const files = Array.from(event.dataTransfer.files);
+
+			if (isEditing()) {
+				const handler = getAddFilesHandler();
+
+				if (handler) {
+					handler(files);
+					return;
+				}
+			}
+
+			processFiles(files);
+		}
+	}
+
+	function handleFileRemove(fileId: string) {
+		uploadedFiles = uploadedFiles.filter((f) => f.id !== fileId);
+	}
+
+	function handleFileUpload(files: File[]) {
+		processFiles(files);
+	}
+
+	function handleKeydown(event: KeyboardEvent) {
+		const isCtrlOrCmd = event.ctrlKey || event.metaKey;
+
+		if (isCtrlOrCmd && event.shiftKey && (event.key === 'd' || event.key === 'D')) {
+			event.preventDefault();
+			if (activeConversation()) {
+				showDeleteDialog = true;
+			}
+		}
+	}
+
+	function handleScroll() {
+		if (disableAutoScroll || !chatScrollContainer) return;
+
+		const { scrollTop, scrollHeight, clientHeight } = chatScrollContainer;
+		const distanceFromBottom = scrollHeight - scrollTop - clientHeight;
+		const isAtBottom = distanceFromBottom < AUTO_SCROLL_AT_BOTTOM_THRESHOLD;
+
+		if (scrollTop < lastScrollTop && !isAtBottom) {
+			userScrolledUp = true;
+			autoScrollEnabled = false;
+		} else if (isAtBottom && userScrolledUp) {
+			userScrolledUp = false;
+			autoScrollEnabled = true;
+		}
+
+		if (scrollTimeout) {
+			clearTimeout(scrollTimeout);
+		}
+
+		scrollTimeout = setTimeout(() => {
+			if (isAtBottom) {
+				userScrolledUp = false;
+				autoScrollEnabled = true;
+			}
+		}, AUTO_SCROLL_INTERVAL);
+
+		lastScrollTop = scrollTop;
+	}
+
+	async function handleSendMessage(message: string, files?: ChatUploadedFile[]): Promise<boolean> {
+		const result = files
+			? await parseFilesToMessageExtras(files, activeModelId ?? undefined)
+			: undefined;
+
+		if (result?.emptyFiles && result.emptyFiles.length > 0) {
+			emptyFileNames = result.emptyFiles;
+			showEmptyFileDialog = true;
+
+			if (files) {
+				const emptyFileNamesSet = new Set(result.emptyFiles);
+				uploadedFiles = uploadedFiles.filter((file) => !emptyFileNamesSet.has(file.name));
+			}
+			return false;
+		}
+
+		const extras = result?.extras;
+
+		// Enable autoscroll for user-initiated message sending
+		if (!disableAutoScroll) {
+			userScrolledUp = false;
+			autoScrollEnabled = true;
+		}
+		await chatStore.sendMessage(message, extras);
+		scrollChatToBottom();
+
+		return true;
+	}
+
+	async function processFiles(files: File[]) {
+		const generallySupported: File[] = [];
+		const generallyUnsupported: File[] = [];
+
+		for (const file of files) {
+			if (isFileTypeSupported(file.name, file.type)) {
+				generallySupported.push(file);
+			} else {
+				generallyUnsupported.push(file);
+			}
+		}
+
+		// Use model-specific capabilities for file validation
+		const capabilities = { hasVision: hasVisionModality, hasAudio: hasAudioModality };
+		const { supportedFiles, unsupportedFiles, modalityReasons } = filterFilesByModalities(
+			generallySupported,
+			capabilities
+		);
+
+		const allUnsupportedFiles = [...generallyUnsupported, ...unsupportedFiles];
+
+		if (allUnsupportedFiles.length > 0) {
+			const supportedTypes: string[] = ['text files', 'PDFs'];
+
+			if (hasVisionModality) supportedTypes.push('images');
+			if (hasAudioModality) supportedTypes.push('audio files');
+
+			fileErrorData = {
+				generallyUnsupported,
+				modalityUnsupported: unsupportedFiles,
+				modalityReasons,
+				supportedTypes
+			};
+			showFileErrorDialog = true;
+		}
+
+		if (supportedFiles.length > 0) {
+			const processed = await processFilesToChatUploaded(
+				supportedFiles,
+				activeModelId ?? undefined
+			);
+			uploadedFiles = [...uploadedFiles, ...processed];
+		}
+	}
+
+	function scrollChatToBottom(behavior: ScrollBehavior = 'smooth') {
+		if (disableAutoScroll) return;
+
+		chatScrollContainer?.scrollTo({
+			top: chatScrollContainer?.scrollHeight,
+			behavior
+		});
+	}
+
+	afterNavigate(() => {
+		if (!disableAutoScroll) {
+			setTimeout(() => scrollChatToBottom('instant'), INITIAL_SCROLL_DELAY);
+		}
+	});
+
+	onMount(() => {
+		if (!disableAutoScroll) {
+			setTimeout(() => scrollChatToBottom('instant'), INITIAL_SCROLL_DELAY);
+		}
+	});
+
+	$effect(() => {
+		if (disableAutoScroll) {
+			autoScrollEnabled = false;
+			if (scrollInterval) {
+				clearInterval(scrollInterval);
+				scrollInterval = undefined;
+			}
+			return;
+		}
+
+		if (isCurrentConversationLoading && autoScrollEnabled) {
+			scrollInterval = setInterval(scrollChatToBottom, AUTO_SCROLL_INTERVAL);
+		} else if (scrollInterval) {
+			clearInterval(scrollInterval);
+			scrollInterval = undefined;
+		}
+	});
+</script>
+
+{#if isDragOver}
+	<ChatScreenDragOverlay />
+{/if}
+
+<svelte:window onkeydown={handleKeydown} />
+
+<ChatScreenHeader />
+
+{#if !isEmpty}
+	<div
+		bind:this={chatScrollContainer}
+		aria-label="Chat interface with file drop zone"
+		class="flex h-full flex-col overflow-y-auto px-4 md:px-6"
+		ondragenter={handleDragEnter}
+		ondragleave={handleDragLeave}
+		ondragover={handleDragOver}
+		ondrop={handleDrop}
+		onscroll={handleScroll}
+		role="main"
+	>
+		<ChatMessages
+			class="mb-16 md:mb-24"
+			messages={activeMessages()}
+			onUserAction={() => {
+				if (!disableAutoScroll) {
+					userScrolledUp = false;
+					autoScrollEnabled = true;
+					scrollChatToBottom();
+				}
+			}}
+		/>
+
+		<div
+			class="pointer-events-none sticky right-0 bottom-0 left-0 mt-auto"
+			in:slide={{ duration: 150, axis: 'y' }}
+		>
+			<ChatScreenProcessingInfo />
+
+			{#if hasPropsError}
+				<div
+					class="pointer-events-auto mx-auto mb-4 max-w-[48rem] px-1"
+					in:fly={{ y: 10, duration: 250 }}
+				>
+					<Alert.Root variant="destructive">
+						<AlertTriangle class="h-4 w-4" />
+						<Alert.Title class="flex items-center justify-between">
+							<span>Server unavailable</span>
+							<button
+								onclick={() => serverStore.fetch()}
+								disabled={isServerLoading}
+								class="flex items-center gap-1.5 rounded-lg bg-destructive/20 px-2 py-1 text-xs font-medium hover:bg-destructive/30 disabled:opacity-50"
+							>
+								<RefreshCw class="h-3 w-3 {isServerLoading ? 'animate-spin' : ''}" />
+								{isServerLoading ? 'Retrying...' : 'Retry'}
+							</button>
+						</Alert.Title>
+						<Alert.Description>{serverError()}</Alert.Description>
+					</Alert.Root>
+				</div>
+			{/if}
+
+			<div class="conversation-chat-form pointer-events-auto rounded-t-3xl pb-4">
+				<ChatForm
+					disabled={hasPropsError || isEditing()}
+					isLoading={isCurrentConversationLoading}
+					onFileRemove={handleFileRemove}
+					onFileUpload={handleFileUpload}
+					onSend={handleSendMessage}
+					onStop={() => chatStore.stopGeneration()}
+					showHelperText={false}
+					bind:uploadedFiles
+				/>
+			</div>
+		</div>
+	</div>
+{:else if isServerLoading}
+	<!-- Server Loading State -->
+	<ServerLoadingSplash />
+{:else}
+	<div
+		aria-label="Welcome screen with file drop zone"
+		class="flex h-full items-center justify-center"
+		ondragenter={handleDragEnter}
+		ondragleave={handleDragLeave}
+		ondragover={handleDragOver}
+		ondrop={handleDrop}
+		role="main"
+	>
+		<div class="w-full max-w-[48rem] px-4">
+			<div class="mb-10 text-center" in:fade={{ duration: 300 }}>
+				<h1 class="mb-4 text-3xl font-semibold tracking-tight">llama.cpp</h1>
+
+				<p class="text-lg text-muted-foreground">
+					{serverStore.props?.modalities?.audio
+						? 'Record audio, type a message '
+						: 'Type a message'} or upload files to get started
+				</p>
+			</div>
+
+			{#if hasPropsError}
+				<div class="mb-4" in:fly={{ y: 10, duration: 250 }}>
+					<Alert.Root variant="destructive">
+						<AlertTriangle class="h-4 w-4" />
+						<Alert.Title class="flex items-center justify-between">
+							<span>Server unavailable</span>
+							<button
+								onclick={() => serverStore.fetch()}
+								disabled={isServerLoading}
+								class="flex items-center gap-1.5 rounded-lg bg-destructive/20 px-2 py-1 text-xs font-medium hover:bg-destructive/30 disabled:opacity-50"
+							>
+								<RefreshCw class="h-3 w-3 {isServerLoading ? 'animate-spin' : ''}" />
+								{isServerLoading ? 'Retrying...' : 'Retry'}
+							</button>
+						</Alert.Title>
+						<Alert.Description>{serverError()}</Alert.Description>
+					</Alert.Root>
+				</div>
+			{/if}
+
+			<div in:fly={{ y: 10, duration: 250, delay: hasPropsError ? 0 : 300 }}>
+				<ChatForm
+					disabled={hasPropsError}
+					isLoading={isCurrentConversationLoading}
+					onFileRemove={handleFileRemove}
+					onFileUpload={handleFileUpload}
+					onSend={handleSendMessage}
+					onStop={() => chatStore.stopGeneration()}
+					showHelperText={true}
+					bind:uploadedFiles
+				/>
+			</div>
+		</div>
+	</div>
+{/if}
+
+<!-- File Upload Error Alert Dialog -->
+<AlertDialog.Root bind:open={showFileErrorDialog}>
+	<AlertDialog.Portal>
+		<AlertDialog.Overlay />
+
+		<AlertDialog.Content class="flex max-w-md flex-col">
+			<AlertDialog.Header>
+				<AlertDialog.Title>File Upload Error</AlertDialog.Title>
+
+				<AlertDialog.Description class="text-sm text-muted-foreground">
+					Some files cannot be uploaded with the current model.
+				</AlertDialog.Description>
+			</AlertDialog.Header>
+
+			<div class="!max-h-[50vh] min-h-0 flex-1 space-y-4 overflow-y-auto">
+				{#if fileErrorData.generallyUnsupported.length > 0}
+					<div class="space-y-2">
+						<h4 class="text-sm font-medium text-destructive">Unsupported File Types</h4>
+
+						<div class="space-y-1">
+							{#each fileErrorData.generallyUnsupported as file (file.name)}
+								<div class="rounded-md bg-destructive/10 px-3 py-2">
+									<p class="font-mono text-sm break-all text-destructive">
+										{file.name}
+									</p>
+
+									<p class="mt-1 text-xs text-muted-foreground">File type not supported</p>
+								</div>
+							{/each}
+						</div>
+					</div>
+				{/if}
+
+				{#if fileErrorData.modalityUnsupported.length > 0}
+					<div class="space-y-2">
+						<div class="space-y-1">
+							{#each fileErrorData.modalityUnsupported as file (file.name)}
+								<div class="rounded-md bg-destructive/10 px-3 py-2">
+									<p class="font-mono text-sm break-all text-destructive">
+										{file.name}
+									</p>
+
+									<p class="mt-1 text-xs text-muted-foreground">
+										{fileErrorData.modalityReasons[file.name] || 'Not supported by current model'}
+									</p>
+								</div>
+							{/each}
+						</div>
+					</div>
+				{/if}
+			</div>
+
+			<div class="rounded-md bg-muted/50 p-3">
+				<h4 class="mb-2 text-sm font-medium">This model supports:</h4>
+
+				<p class="text-sm text-muted-foreground">
+					{fileErrorData.supportedTypes.join(', ')}
+				</p>
+			</div>
+
+			<AlertDialog.Footer>
+				<AlertDialog.Action onclick={() => (showFileErrorDialog = false)}>
+					Got it
+				</AlertDialog.Action>
+			</AlertDialog.Footer>
+		</AlertDialog.Content>
+	</AlertDialog.Portal>
+</AlertDialog.Root>
+
+<DialogConfirmation
+	bind:open={showDeleteDialog}
+	title="Delete Conversation"
+	description="Are you sure you want to delete this conversation? This action cannot be undone and will permanently remove all messages in this conversation."
+	confirmText="Delete"
+	cancelText="Cancel"
+	variant="destructive"
+	icon={Trash2}
+	onConfirm={handleDeleteConfirm}
+	onCancel={() => (showDeleteDialog = false)}
+/>
+
+<DialogEmptyFileAlert
+	bind:open={showEmptyFileDialog}
+	emptyFiles={emptyFileNames}
+	onOpenChange={(open) => {
+		if (!open) {
+			emptyFileNames = [];
+		}
+	}}
+/>
+
+<DialogChatError
+	message={activeErrorDialog?.message ?? ''}
+	contextInfo={activeErrorDialog?.contextInfo}
+	onOpenChange={handleErrorDialogOpenChange}
+	open={Boolean(activeErrorDialog)}
+	type={activeErrorDialog?.type ?? 'server'}
+/>
+
+<style>
+	.conversation-chat-form {
+		position: relative;
+
+		&::after {
+			content: '';
+			position: absolute;
+			bottom: 0;
+			z-index: -1;
+			left: 0;
+			right: 0;
+			width: 100%;
+			height: 2.375rem;
+			background-color: var(--background);
+		}
+	}
+</style>

tools/server/webui/src/lib/components/app/chat/ChatScreen/ChatScreenDragOverlay.svelte

@@ -0,0 +1,17 @@
+<script>
+	import { Upload } from '@lucide/svelte';
+</script>
+
+<div
+	class="pointer-events-none fixed inset-0 z-50 flex items-center justify-center bg-black/50 backdrop-blur-sm"
+>
+	<div
+		class="flex flex-col items-center justify-center rounded-2xl border-2 border-dashed border-border bg-background p-12 shadow-lg"
+	>
+		<Upload class="mb-4 h-12 w-12 text-muted-foreground" />
+
+		<p class="text-lg font-medium text-foreground">Attach a file</p>
+
+		<p class="text-sm text-muted-foreground">Drop your files here to upload</p>
+	</div>
+</div>

tools/server/webui/src/lib/components/app/chat/ChatScreen/ChatScreenHeader.svelte

@@ -0,0 +1,28 @@
+<script lang="ts">
+	import { Settings } from '@lucide/svelte';
+	import { DialogChatSettings } from '$lib/components/app';
+	import { Button } from '$lib/components/ui/button';
+	import { useSidebar } from '$lib/components/ui/sidebar';
+
+	const sidebar = useSidebar();
+
+	let settingsOpen = $state(false);
+
+	function toggleSettings() {
+		settingsOpen = true;
+	}
+</script>
+
+<header
+	class="md:background-transparent pointer-events-none fixed top-0 right-0 left-0 z-50 flex items-center justify-end bg-background/40 p-4 backdrop-blur-xl duration-200 ease-linear {sidebar.open
+		? 'md:left-[var(--sidebar-width)]'
+		: ''}"
+>
+	<div class="pointer-events-auto flex items-center space-x-2">
+		<Button variant="ghost" size="sm" onclick={toggleSettings}>
+			<Settings class="h-4 w-4" />
+		</Button>
+	</div>
+</header>
+
+<DialogChatSettings open={settingsOpen} onOpenChange={(open) => (settingsOpen = open)} />

tools/server/webui/src/lib/components/app/chat/ChatScreen/ChatScreenProcessingInfo.svelte

@@ -0,0 +1,120 @@
+<script lang="ts">
+	import { untrack } from 'svelte';
+	import { PROCESSING_INFO_TIMEOUT } from '$lib/constants/processing-info';
+	import { useProcessingState } from '$lib/hooks/use-processing-state.svelte';
+	import { chatStore, isLoading, isChatStreaming } from '$lib/stores/chat.svelte';
+	import { activeMessages, activeConversation } from '$lib/stores/conversations.svelte';
+	import { config } from '$lib/stores/settings.svelte';
+
+	const processingState = useProcessingState();
+
+	let isCurrentConversationLoading = $derived(isLoading());
+	let isStreaming = $derived(isChatStreaming());
+	let hasProcessingData = $derived(processingState.processingState !== null);
+	let processingDetails = $derived(processingState.getProcessingDetails());
+
+	let showProcessingInfo = $derived(
+		isCurrentConversationLoading || isStreaming || config().keepStatsVisible || hasProcessingData
+	);
+
+	$effect(() => {
+		const conversation = activeConversation();
+
+		untrack(() => chatStore.setActiveProcessingConversation(conversation?.id ?? null));
+	});
+
+	$effect(() => {
+		const keepStatsVisible = config().keepStatsVisible;
+		const shouldMonitor = keepStatsVisible || isCurrentConversationLoading || isStreaming;
+
+		if (shouldMonitor) {
+			processingState.startMonitoring();
+		}
+
+		if (!isCurrentConversationLoading && !isStreaming && !keepStatsVisible) {
+			const timeout = setTimeout(() => {
+				if (!config().keepStatsVisible && !isChatStreaming()) {
+					processingState.stopMonitoring();
+				}
+			}, PROCESSING_INFO_TIMEOUT);
+
+			return () => clearTimeout(timeout);
+		}
+	});
+
+	$effect(() => {
+		const conversation = activeConversation();
+		const messages = activeMessages() as DatabaseMessage[];
+		const keepStatsVisible = config().keepStatsVisible;
+
+		if (keepStatsVisible && conversation) {
+			if (messages.length === 0) {
+				untrack(() => chatStore.clearProcessingState(conversation.id));
+				return;
+			}
+
+			if (!isCurrentConversationLoading && !isStreaming) {
+				untrack(() => chatStore.restoreProcessingStateFromMessages(messages, conversation.id));
+			}
+		}
+	});
+</script>
+
+<div class="chat-processing-info-container pointer-events-none" class:visible={showProcessingInfo}>
+	<div class="chat-processing-info-content">
+		{#each processingDetails as detail (detail)}
+			<span class="chat-processing-info-detail pointer-events-auto">{detail}</span>
+		{/each}
+	</div>
+</div>
+
+<style>
+	.chat-processing-info-container {
+		position: sticky;
+		top: 0;
+		z-index: 10;
+		padding: 1.5rem 1rem;
+		opacity: 0;
+		transform: translateY(50%);
+		transition:
+			opacity 300ms ease-out,
+			transform 300ms ease-out;
+	}
+
+	.chat-processing-info-container.visible {
+		opacity: 1;
+		transform: translateY(0);
+	}
+
+	.chat-processing-info-content {
+		display: flex;
+		flex-wrap: wrap;
+		align-items: center;
+		gap: 1rem;
+		justify-content: center;
+		max-width: 48rem;
+		margin: 0 auto;
+	}
+
+	.chat-processing-info-detail {
+		color: var(--muted-foreground);
+		font-size: 0.75rem;
+		padding: 0.25rem 0.75rem;
+		background: var(--muted);
+		border-radius: 0.375rem;
+		font-family:
+			ui-monospace, SFMono-Regular, 'SF Mono', Consolas, 'Liberation Mono', Menlo, monospace;
+		white-space: nowrap;
+	}
+
+	@media (max-width: 768px) {
+		.chat-processing-info-content {
+			gap: 0.5rem;
+		}
+
+		.chat-processing-info-detail {
+			font-size: 0.7rem;
+			padding: 0.2rem 0.5rem;
+		}
+	}
+</style>

tools/server/webui/src/lib/components/app/chat/ChatSettings/ChatSettings.svelte

@@ -0,0 +1,508 @@
+<script lang="ts">
+	import {
+		Settings,
+		Funnel,
+		AlertTriangle,
+		Code,
+		Monitor,
+		Sun,
+		Moon,
+		ChevronLeft,
+		ChevronRight,
+		Database
+	} from '@lucide/svelte';
+	import {
+		ChatSettingsFooter,
+		ChatSettingsImportExportTab,
+		ChatSettingsFields
+	} from '$lib/components/app';
+	import { ScrollArea } from '$lib/components/ui/scroll-area';
+	import { config, settingsStore } from '$lib/stores/settings.svelte';
+	import { setMode } from 'mode-watcher';
+	import type { Component } from 'svelte';
+
+	interface Props {
+		onSave?: () => void;
+	}
+
+	let { onSave }: Props = $props();
+
+	const settingSections: Array<{
+		fields: SettingsFieldConfig[];
+		icon: Component;
+		title: string;
+	}> = [
+		{
+			title: 'General',
+			icon: Settings,
+			fields: [
+				{
+					key: 'theme',
+					label: 'Theme',
+					type: 'select',
+					options: [
+						{ value: 'system', label: 'System', icon: Monitor },
+						{ value: 'light', label: 'Light', icon: Sun },
+						{ value: 'dark', label: 'Dark', icon: Moon }
+					]
+				},
+				{ key: 'apiKey', label: 'API Key', type: 'input' },
+				{
+					key: 'systemMessage',
+					label: 'System Message',
+					type: 'textarea'
+				},
+				{
+					key: 'pasteLongTextToFileLen',
+					label: 'Paste long text to file length',
+					type: 'input'
+				},
+				{
+					key: 'copyTextAttachmentsAsPlainText',
+					label: 'Copy text attachments as plain text',
+					type: 'checkbox'
+				},
+				{
+					key: 'enableContinueGeneration',
+					label: 'Enable "Continue" button',
+					type: 'checkbox',
+					isExperimental: true
+				},
+				{
+					key: 'pdfAsImage',
+					label: 'Parse PDF as image',
+					type: 'checkbox'
+				},
+				{
+					key: 'askForTitleConfirmation',
+					label: 'Ask for confirmation before changing conversation title',
+					type: 'checkbox'
+				}
+			]
+		},
+		{
+			title: 'Display',
+			icon: Monitor,
+			fields: [
+				{
+					key: 'showMessageStats',
+					label: 'Show message generation statistics',
+					type: 'checkbox'
+				},
+				{
+					key: 'showThoughtInProgress',
+					label: 'Show thought in progress',
+					type: 'checkbox'
+				},
+				{
+					key: 'keepStatsVisible',
+					label: 'Keep stats visible after generation',
+					type: 'checkbox'
+				},
+				{
+					key: 'autoMicOnEmpty',
+					label: 'Show microphone on empty input',
+					type: 'checkbox',
+					isExperimental: true
+				},
+				{
+					key: 'renderUserContentAsMarkdown',
+					label: 'Render user content as Markdown',
+					type: 'checkbox'
+				},
+				{
+					key: 'disableAutoScroll',
+					label: 'Disable automatic scroll',
+					type: 'checkbox'
+				},
+				{
+					key: 'alwaysShowSidebarOnDesktop',
+					label: 'Always show sidebar on desktop',
+					type: 'checkbox'
+				},
+				{
+					key: 'autoShowSidebarOnNewChat',
+					label: 'Auto-show sidebar on new chat',
+					type: 'checkbox'
+				}
+			]
+		},
+		{
+			title: 'Sampling',
+			icon: Funnel,
+			fields: [
+				{
+					key: 'temperature',
+					label: 'Temperature',
+					type: 'input'
+				},
+				{
+					key: 'dynatemp_range',
+					label: 'Dynamic temperature range',
+					type: 'input'
+				},
+				{
+					key: 'dynatemp_exponent',
+					label: 'Dynamic temperature exponent',
+					type: 'input'
+				},
+				{
+					key: 'top_k',
+					label: 'Top K',
+					type: 'input'
+				},
+				{
+					key: 'top_p',
+					label: 'Top P',
+					type: 'input'
+				},
+				{
+					key: 'min_p',
+					label: 'Min P',
+					type: 'input'
+				},
+				{
+					key: 'xtc_probability',
+					label: 'XTC probability',
+					type: 'input'
+				},
+				{
+					key: 'xtc_threshold',
+					label: 'XTC threshold',
+					type: 'input'
+				},
+				{
+					key: 'typ_p',
+					label: 'Typical P',
+					type: 'input'
+				},
+				{
+					key: 'max_tokens',
+					label: 'Max tokens',
+					type: 'input'
+				},
+				{
+					key: 'samplers',
+					label: 'Samplers',
+					type: 'input'
+				},
+				{
+					key: 'backend_sampling',
+					label: 'Backend sampling',
+					type: 'checkbox'
+				}
+			]
+		},
+		{
+			title: 'Penalties',
+			icon: AlertTriangle,
+			fields: [
+				{
+					key: 'repeat_last_n',
+					label: 'Repeat last N',
+					type: 'input'
+				},
+				{
+					key: 'repeat_penalty',
+					label: 'Repeat penalty',
+					type: 'input'
+				},
+				{
+					key: 'presence_penalty',
+					label: 'Presence penalty',
+					type: 'input'
+				},
+				{
+					key: 'frequency_penalty',
+					label: 'Frequency penalty',
+					type: 'input'
+				},
+				{
+					key: 'dry_multiplier',
+					label: 'DRY multiplier',
+					type: 'input'
+				},
+				{
+					key: 'dry_base',
+					label: 'DRY base',
+					type: 'input'
+				},
+				{
+					key: 'dry_allowed_length',
+					label: 'DRY allowed length',
+					type: 'input'
+				},
+				{
+					key: 'dry_penalty_last_n',
+					label: 'DRY penalty last N',
+					type: 'input'
+				}
+			]
+		},
+		{
+			title: 'Import/Export',
+			icon: Database,
+			fields: []
+		},
+		{
+			title: 'Developer',
+			icon: Code,
+			fields: [
+				{
+					key: 'showToolCalls',
+					label: 'Show tool call labels',
+					type: 'checkbox'
+				},
+				{
+					key: 'disableReasoningFormat',
+					label: 'Show raw LLM output',
+					type: 'checkbox'
+				},
+				{
+					key: 'custom',
+					label: 'Custom JSON',
+					type: 'textarea'
+				}
+			]
+		}
+		// TODO: Experimental features section will be implemented after initial release
+		// This includes Python interpreter (Pyodide integration) and other experimental features
+		// {
+		// 	title: 'Experimental',
+		// 	icon: Beaker,
+		// 	fields: [
+		// 		{
+		// 			key: 'pyInterpreterEnabled',
+		// 			label: 'Enable Python interpreter',
+		// 			type: 'checkbox'
+		// 		}
+		// 	]
+		// }
+	];
+
+	let activeSection = $state('General');
+	let currentSection = $derived(
+		settingSections.find((section) => section.title === activeSection) || settingSections[0]
+	);
+	let localConfig: SettingsConfigType = $state({ ...config() });
+
+	let canScrollLeft = $state(false);
+	let canScrollRight = $state(false);
+	let scrollContainer: HTMLDivElement | undefined = $state();
+
+	function handleThemeChange(newTheme: string) {
+		localConfig.theme = newTheme;
+
+		setMode(newTheme as 'light' | 'dark' | 'system');
+	}
+
+	function handleConfigChange(key: string, value: string | boolean) {
+		localConfig[key] = value;
+	}
+
+	function handleReset() {
+		localConfig = { ...config() };
+
+		setMode(localConfig.theme as 'light' | 'dark' | 'system');
+	}
+
+	function handleSave() {
+		if (localConfig.custom && typeof localConfig.custom === 'string' && localConfig.custom.trim()) {
+			try {
+				JSON.parse(localConfig.custom);
+			} catch (error) {
+				alert('Invalid JSON in custom parameters. Please check the format and try again.');
+				console.error(error);
+				return;
+			}
+		}
+
+		// Convert numeric strings to numbers for numeric fields
+		const processedConfig = { ...localConfig };
+		const numericFields = [
+			'temperature',
+			'top_k',
+			'top_p',
+			'min_p',
+			'max_tokens',
+			'pasteLongTextToFileLen',
+			'dynatemp_range',
+			'dynatemp_exponent',
+			'typ_p',
+			'xtc_probability',
+			'xtc_threshold',
+			'repeat_last_n',
+			'repeat_penalty',
+			'presence_penalty',
+			'frequency_penalty',
+			'dry_multiplier',
+			'dry_base',
+			'dry_allowed_length',
+			'dry_penalty_last_n'
+		];
+
+		for (const field of numericFields) {
+			if (processedConfig[field] !== undefined && processedConfig[field] !== '') {
+				const numValue = Number(processedConfig[field]);
+				if (!isNaN(numValue)) {
+					processedConfig[field] = numValue;
+				} else {
+					alert(`Invalid numeric value for ${field}. Please enter a valid number.`);
+					return;
+				}
+			}
+		}
+
+		settingsStore.updateMultipleConfig(processedConfig);
+		onSave?.();
+	}
+
+	function scrollToCenter(element: HTMLElement) {
+		if (!scrollContainer) return;
+
+		const containerRect = scrollContainer.getBoundingClientRect();
+		const elementRect = element.getBoundingClientRect();
+
+		const elementCenter = elementRect.left + elementRect.width / 2;
+		const containerCenter = containerRect.left + containerRect.width / 2;
+		const scrollOffset = elementCenter - containerCenter;
+
+		scrollContainer.scrollBy({ left: scrollOffset, behavior: 'smooth' });
+	}
+
+	function scrollLeft() {
+		if (!scrollContainer) return;
+
+		scrollContainer.scrollBy({ left: -250, behavior: 'smooth' });
+	}
+
+	function scrollRight() {
+		if (!scrollContainer) return;
+
+		scrollContainer.scrollBy({ left: 250, behavior: 'smooth' });
+	}
+
+	function updateScrollButtons() {
+		if (!scrollContainer) return;
+
+		const { scrollLeft, scrollWidth, clientWidth } = scrollContainer;
+		canScrollLeft = scrollLeft > 0;
+		canScrollRight = scrollLeft < scrollWidth - clientWidth - 1; // -1 for rounding
+	}
+
+	export function reset() {
+		localConfig = { ...config() };
+
+		setTimeout(updateScrollButtons, 100);
+	}
+
+	$effect(() => {
+		if (scrollContainer) {
+			updateScrollButtons();
+		}
+	});
+</script>
+
+<div class="flex h-full flex-col overflow-hidden md:flex-row">
+	<!-- Desktop Sidebar -->
+	<div class="hidden w-64 border-r border-border/30 p-6 md:block">
+		<nav class="space-y-1 py-2">
+			{#each settingSections as section (section.title)}
+				<button
+					class="flex w-full cursor-pointer items-center gap-3 rounded-lg px-3 py-2 text-left text-sm transition-colors hover:bg-accent {activeSection ===
+					section.title
+						? 'bg-accent text-accent-foreground'
+						: 'text-muted-foreground'}"
+					onclick={() => (activeSection = section.title)}
+				>
+					<section.icon class="h-4 w-4" />
+
+					<span class="ml-2">{section.title}</span>
+				</button>
+			{/each}
+		</nav>
+	</div>
+
+	<!-- Mobile Header with Horizontal Scrollable Menu -->
+	<div class="flex flex-col pt-6 md:hidden">
+		<div class="border-b border-border/30 py-4">
+			<!-- Horizontal Scrollable Category Menu with Navigation -->
+			<div class="relative flex items-center" style="scroll-padding: 1rem;">
+				<button
+					class="absolute left-2 z-10 flex h-6 w-6 items-center justify-center rounded-full bg-muted shadow-md backdrop-blur-sm transition-opacity hover:bg-accent {canScrollLeft
+						? 'opacity-100'
+						: 'pointer-events-none opacity-0'}"
+					onclick={scrollLeft}
+					aria-label="Scroll left"
+				>
+					<ChevronLeft class="h-4 w-4" />
+				</button>
+
+				<div
+					class="scrollbar-hide overflow-x-auto py-2"
+					bind:this={scrollContainer}
+					onscroll={updateScrollButtons}
+				>
+					<div class="flex min-w-max gap-2">
+						{#each settingSections as section (section.title)}
+							<button
+								class="flex cursor-pointer items-center gap-2 rounded-lg px-3 py-2 text-sm whitespace-nowrap transition-colors first:ml-4 last:mr-4 hover:bg-accent {activeSection ===
+								section.title
+									? 'bg-accent text-accent-foreground'
+									: 'text-muted-foreground'}"
+								onclick={(e: MouseEvent) => {
+									activeSection = section.title;
+									scrollToCenter(e.currentTarget as HTMLElement);
+								}}
+							>
+								<section.icon class="h-4 w-4 flex-shrink-0" />
+								<span>{section.title}</span>
+							</button>
+						{/each}
+					</div>
+				</div>
+
+				<button
+					class="absolute right-2 z-10 flex h-6 w-6 items-center justify-center rounded-full bg-muted shadow-md backdrop-blur-sm transition-opacity hover:bg-accent {canScrollRight
+						? 'opacity-100'
+						: 'pointer-events-none opacity-0'}"
+					onclick={scrollRight}
+					aria-label="Scroll right"
+				>
+					<ChevronRight class="h-4 w-4" />
+				</button>
+			</div>
+		</div>
+	</div>
+
+	<ScrollArea class="max-h-[calc(100dvh-13.5rem)] flex-1 md:max-h-[calc(100vh-13.5rem)]">
+		<div class="space-y-6 p-4 md:p-6">
+			<div class="grid">
+				<div class="mb-6 flex hidden items-center gap-2 border-b border-border/30 pb-6 md:flex">
+					<currentSection.icon class="h-5 w-5" />
+
+					<h3 class="text-lg font-semibold">{currentSection.title}</h3>
+				</div>
+
+				{#if currentSection.title === 'Import/Export'}
+					<ChatSettingsImportExportTab />
+				{:else}
+					<div class="space-y-6">
+						<ChatSettingsFields
+							fields={currentSection.fields}
+							{localConfig}
+							onConfigChange={handleConfigChange}
+							onThemeChange={handleThemeChange}
+						/>
+					</div>
+				{/if}
+			</div>
+
+			<div class="mt-8 border-t pt-6">
+				<p class="text-xs text-muted-foreground">Settings are saved in browser's localStorage</p>
+			</div>
+		</div>
+	</ScrollArea>
+</div>
+
+<ChatSettingsFooter onReset={handleReset} onSave={handleSave} />

tools/server/webui/src/lib/components/app/chat/ChatSettings/ChatSettingsFields.svelte

@@ -0,0 +1,255 @@
+<script lang="ts">
+	import { RotateCcw, FlaskConical } from '@lucide/svelte';
+	import { Checkbox } from '$lib/components/ui/checkbox';
+	import { Input } from '$lib/components/ui/input';
+	import Label from '$lib/components/ui/label/label.svelte';
+	import * as Select from '$lib/components/ui/select';
+	import { Textarea } from '$lib/components/ui/textarea';
+	import { SETTING_CONFIG_DEFAULT, SETTING_CONFIG_INFO } from '$lib/constants/settings-config';
+	import { settingsStore } from '$lib/stores/settings.svelte';
+	import { ChatSettingsParameterSourceIndicator } from '$lib/components/app';
+	import type { Component } from 'svelte';
+
+	interface Props {
+		fields: SettingsFieldConfig[];
+		localConfig: SettingsConfigType;
+		onConfigChange: (key: string, value: string | boolean) => void;
+		onThemeChange?: (theme: string) => void;
+	}
+
+	let { fields, localConfig, onConfigChange, onThemeChange }: Props = $props();
+
+	// Helper function to get parameter source info for syncable parameters
+	function getParameterSourceInfo(key: string) {
+		if (!settingsStore.canSyncParameter(key)) {
+			return null;
+		}
+
+		return settingsStore.getParameterInfo(key);
+	}
+</script>
+
+{#each fields as field (field.key)}
+	<div class="space-y-2">
+		{#if field.type === 'input'}
+			{@const paramInfo = getParameterSourceInfo(field.key)}
+			{@const currentValue = String(localConfig[field.key] ?? '')}
+			{@const propsDefault = paramInfo?.serverDefault}
+			{@const isCustomRealTime = (() => {
+				if (!paramInfo || propsDefault === undefined) return false;
+
+				// Apply same rounding logic for real-time comparison
+				const inputValue = currentValue;
+				const numericInput = parseFloat(inputValue);
+				const normalizedInput = !isNaN(numericInput)
+					? Math.round(numericInput * 1000000) / 1000000
+					: inputValue;
+				const normalizedDefault =
+					typeof propsDefault === 'number'
+						? Math.round(propsDefault * 1000000) / 1000000
+						: propsDefault;
+
+				return normalizedInput !== normalizedDefault;
+			})()}
+
+			<div class="flex items-center gap-2">
+				<Label for={field.key} class="flex items-center gap-1.5 text-sm font-medium">
+					{field.label}
+
+					{#if field.isExperimental}
+						<FlaskConical class="h-3.5 w-3.5 text-muted-foreground" />
+					{/if}
+				</Label>
+				{#if isCustomRealTime}
+					<ChatSettingsParameterSourceIndicator />
+				{/if}
+			</div>
+
+			<div class="relative w-full md:max-w-md">
+				<Input
+					id={field.key}
+					value={currentValue}
+					oninput={(e) => {
+						// Update local config immediately for real-time badge feedback
+						onConfigChange(field.key, e.currentTarget.value);
+					}}
+					placeholder={`Default: ${SETTING_CONFIG_DEFAULT[field.key] ?? 'none'}`}
+					class="w-full {isCustomRealTime ? 'pr-8' : ''}"
+				/>
+				{#if isCustomRealTime}
+					<button
+						type="button"
+						onclick={() => {
+							settingsStore.resetParameterToServerDefault(field.key);
+							// Trigger UI update by calling onConfigChange with the default value
+							const defaultValue = propsDefault ?? SETTING_CONFIG_DEFAULT[field.key];
+							onConfigChange(field.key, String(defaultValue));
+						}}
+						class="absolute top-1/2 right-2 inline-flex h-5 w-5 -translate-y-1/2 items-center justify-center rounded transition-colors hover:bg-muted"
+						aria-label="Reset to default"
+						title="Reset to default"
+					>
+						<RotateCcw class="h-3 w-3" />
+					</button>
+				{/if}
+			</div>
+			{#if field.help || SETTING_CONFIG_INFO[field.key]}
+				<p class="mt-1 text-xs text-muted-foreground">
+					{@html field.help || SETTING_CONFIG_INFO[field.key]}
+				</p>
+			{/if}
+		{:else if field.type === 'textarea'}
+			<Label for={field.key} class="block flex items-center gap-1.5 text-sm font-medium">
+				{field.label}
+
+				{#if field.isExperimental}
+					<FlaskConical class="h-3.5 w-3.5 text-muted-foreground" />
+				{/if}
+			</Label>
+
+			<Textarea
+				id={field.key}
+				value={String(localConfig[field.key] ?? '')}
+				onchange={(e) => onConfigChange(field.key, e.currentTarget.value)}
+				placeholder={`Default: ${SETTING_CONFIG_DEFAULT[field.key] ?? 'none'}`}
+				class="min-h-[10rem] w-full md:max-w-2xl"
+			/>
+
+			{#if field.help || SETTING_CONFIG_INFO[field.key]}
+				<p class="mt-1 text-xs text-muted-foreground">
+					{field.help || SETTING_CONFIG_INFO[field.key]}
+				</p>
+			{/if}
+
+			{#if field.key === 'systemMessage'}
+				<div class="mt-3 flex items-center gap-2">
+					<Checkbox
+						id="showSystemMessage"
+						checked={Boolean(localConfig.showSystemMessage ?? true)}
+						onCheckedChange={(checked) => onConfigChange('showSystemMessage', Boolean(checked))}
+					/>
+
+					<Label for="showSystemMessage" class="cursor-pointer text-sm font-normal">
+						Show system message in conversations
+					</Label>
+				</div>
+			{/if}
+		{:else if field.type === 'select'}
+			{@const selectedOption = field.options?.find(
+				(opt: { value: string; label: string; icon?: Component }) =>
+					opt.value === localConfig[field.key]
+			)}
+			{@const paramInfo = getParameterSourceInfo(field.key)}
+			{@const currentValue = localConfig[field.key]}
+			{@const propsDefault = paramInfo?.serverDefault}
+			{@const isCustomRealTime = (() => {
+				if (!paramInfo || propsDefault === undefined) return false;
+
+				// For select fields, do direct comparison (no rounding needed)
+				return currentValue !== propsDefault;
+			})()}
+
+			<div class="flex items-center gap-2">
+				<Label for={field.key} class="flex items-center gap-1.5 text-sm font-medium">
+					{field.label}
+
+					{#if field.isExperimental}
+						<FlaskConical class="h-3.5 w-3.5 text-muted-foreground" />
+					{/if}
+				</Label>
+				{#if isCustomRealTime}
+					<ChatSettingsParameterSourceIndicator />
+				{/if}
+			</div>
+
+			<Select.Root
+				type="single"
+				value={currentValue}
+				onValueChange={(value) => {
+					if (field.key === 'theme' && value && onThemeChange) {
+						onThemeChange(value);
+					} else {
+						onConfigChange(field.key, value);
+					}
+				}}
+			>
+				<div class="relative w-full md:w-auto md:max-w-md">
+					<Select.Trigger class="w-full">
+						<div class="flex items-center gap-2">
+							{#if selectedOption?.icon}
+								{@const IconComponent = selectedOption.icon}
+								<IconComponent class="h-4 w-4" />
+							{/if}
+
+							{selectedOption?.label || `Select ${field.label.toLowerCase()}`}
+						</div>
+					</Select.Trigger>
+					{#if isCustomRealTime}
+						<button
+							type="button"
+							onclick={() => {
+								settingsStore.resetParameterToServerDefault(field.key);
+								// Trigger UI update by calling onConfigChange with the default value
+								const defaultValue = propsDefault ?? SETTING_CONFIG_DEFAULT[field.key];
+								onConfigChange(field.key, String(defaultValue));
+							}}
+							class="absolute top-1/2 right-8 inline-flex h-5 w-5 -translate-y-1/2 items-center justify-center rounded transition-colors hover:bg-muted"
+							aria-label="Reset to default"
+							title="Reset to default"
+						>
+							<RotateCcw class="h-3 w-3" />
+						</button>
+					{/if}
+				</div>
+				<Select.Content>
+					{#if field.options}
+						{#each field.options as option (option.value)}
+							<Select.Item value={option.value} label={option.label}>
+								<div class="flex items-center gap-2">
+									{#if option.icon}
+										{@const IconComponent = option.icon}
+										<IconComponent class="h-4 w-4" />
+									{/if}
+									{option.label}
+								</div>
+							</Select.Item>
+						{/each}
+					{/if}
+				</Select.Content>
+			</Select.Root>
+			{#if field.help || SETTING_CONFIG_INFO[field.key]}
+				<p class="mt-1 text-xs text-muted-foreground">
+					{field.help || SETTING_CONFIG_INFO[field.key]}
+				</p>
+			{/if}
+		{:else if field.type === 'checkbox'}
+			<div class="flex items-start space-x-3">
+				<Checkbox
+					id={field.key}
+					checked={Boolean(localConfig[field.key])}
+					onCheckedChange={(checked) => onConfigChange(field.key, checked)}
+					class="mt-1"
+				/>
+
+				<div class="space-y-1">
+					<label
+						for={field.key}
+						class="flex cursor-pointer items-center gap-1.5 pt-1 pb-0.5 text-sm leading-none font-medium"
+					>
+						{field.label}
+
+						{#if field.isExperimental}
+							<FlaskConical class="h-3.5 w-3.5 text-muted-foreground" />
+						{/if}
+					</label>
+
+					{#if field.help || SETTING_CONFIG_INFO[field.key]}
+						<p class="text-xs text-muted-foreground">
+							{field.help || SETTING_CONFIG_INFO[field.key]}
+						</p>
+					{/if}
+				</div>
+			</div>
+		{/if}
+	</div>
+{/each}

tools/server/webui/src/lib/components/app/chat/ChatSettings/ChatSettingsFooter.svelte

@@ -0,0 +1,59 @@
+<script lang="ts">
+	import { Button } from '$lib/components/ui/button';
+	import * as AlertDialog from '$lib/components/ui/alert-dialog';
+	import { settingsStore } from '$lib/stores/settings.svelte';
+	import { RotateCcw } from '@lucide/svelte';
+
+	interface Props {
+		onReset?: () => void;
+		onSave?: () => void;
+	}
+
+	let { onReset, onSave }: Props = $props();
+
+	let showResetDialog = $state(false);
+
+	function handleResetClick() {
+		showResetDialog = true;
+	}
+
+	function handleConfirmReset() {
+		settingsStore.forceSyncWithServerDefaults();
+		onReset?.();
+
+		showResetDialog = false;
+	}
+
+	function handleSave() {
+		onSave?.();
+	}
+</script>
+
+<div class="flex justify-between border-t border-border/30 p-6">
+	<div class="flex gap-2">
+		<Button variant="outline" onclick={handleResetClick}>
+			<RotateCcw class="h-3 w-3" />
+
+			Reset to default
+		</Button>
+	</div>
+
+	<Button onclick={handleSave}>Save settings</Button>
+</div>
+
+<AlertDialog.Root bind:open={showResetDialog}>
+	<AlertDialog.Content>
+		<AlertDialog.Header>
+			<AlertDialog.Title>Reset Settings to Default</AlertDialog.Title>
+			<AlertDialog.Description>
+				Are you sure you want to reset all settings to their default values? This will reset all
+				parameters to the values provided by the server's /props endpoint and remove all your custom
+				configurations.
+			</AlertDialog.Description>
+		</AlertDialog.Header>
+		<AlertDialog.Footer>
+			<AlertDialog.Cancel>Cancel</AlertDialog.Cancel>
+			<AlertDialog.Action onclick={handleConfirmReset}>Reset to Default</AlertDialog.Action>
+		</AlertDialog.Footer>
+	</AlertDialog.Content>
+</AlertDialog.Root>

tools/server/webui/src/lib/components/app/chat/ChatSettings/ChatSettingsImportExportTab.svelte

@@ -0,0 +1,317 @@
+<script lang="ts">
+	import { Download, Upload, Trash2 } from '@lucide/svelte';
+	import { Button } from '$lib/components/ui/button';
+	import { DialogConversationSelection } from '$lib/components/app';
+	import { createMessageCountMap } from '$lib/utils';
+	import { conversationsStore, conversations } from '$lib/stores/conversations.svelte';
+	import { toast } from 'svelte-sonner';
+	import DialogConfirmation from '$lib/components/app/dialogs/DialogConfirmation.svelte';
+
+	let exportedConversations = $state<DatabaseConversation[]>([]);
+	let importedConversations = $state<DatabaseConversation[]>([]);
+	let showExportSummary = $state(false);
+	let showImportSummary = $state(false);
+
+	let showExportDialog = $state(false);
+	let showImportDialog = $state(false);
+	let availableConversations = $state<DatabaseConversation[]>([]);
+	let messageCountMap = $state<Map<string, number>>(new Map());
+	let fullImportData = $state<Array<{ conv: DatabaseConversation; messages: DatabaseMessage[] }>>(
+		[]
+	);
+
+	// Delete functionality state
+	let showDeleteDialog = $state(false);
+
+	async function handleExportClick() {
+		try {
+			const allConversations = conversations();
+			if (allConversations.length === 0) {
+				toast.info('No conversations to export');
+				return;
+			}
+
+			const conversationsWithMessages = await Promise.all(
+				allConversations.map(async (conv: DatabaseConversation) => {
+					const messages = await conversationsStore.getConversationMessages(conv.id);
+					return { conv, messages };
+				})
+			);
+
+			messageCountMap = createMessageCountMap(conversationsWithMessages);
+			availableConversations = allConversations;
+			showExportDialog = true;
+		} catch (err) {
+			console.error('Failed to load conversations:', err);
+			alert('Failed to load conversations');
+		}
+	}
+
+	async function handleExportConfirm(selectedConversations: DatabaseConversation[]) {
+		try {
+			const allData: ExportedConversations = await Promise.all(
+				selectedConversations.map(async (conv) => {
+					const messages = await conversationsStore.getConversationMessages(conv.id);
+					return { conv: $state.snapshot(conv), messages: $state.snapshot(messages) };
+				})
+			);
+
+			const blob = new Blob([JSON.stringify(allData, null, 2)], {
+				type: 'application/json'
+			});
+			const url = URL.createObjectURL(blob);
+			const a = document.createElement('a');
+
+			a.href = url;
+			a.download = `conversations_${new Date().toISOString().split('T')[0]}.json`;
+			document.body.appendChild(a);
+			a.click();
+			document.body.removeChild(a);
+			URL.revokeObjectURL(url);
+
+			exportedConversations = selectedConversations;
+			showExportSummary = true;
+			showImportSummary = false;
+			showExportDialog = false;
+		} catch (err) {
+			console.error('Export failed:', err);
+			alert('Failed to export conversations');
+		}
+	}
+
+	async function handleImportClick() {
+		try {
+			const input = document.createElement('input');
+
+			input.type = 'file';
+			input.accept = '.json';
+
+			input.onchange = async (e) => {
+				const file = (e.target as HTMLInputElement)?.files?.[0];
+				if (!file) return;
+
+				try {
+					const text = await file.text();
+					const parsedData = JSON.parse(text);
+					let importedData: ExportedConversations;
+
+					if (Array.isArray(parsedData)) {
+						importedData = parsedData;
+					} else if (
+						parsedData &&
+						typeof parsedData === 'object' &&
+						'conv' in parsedData &&
+						'messages' in parsedData
+					) {
+						// Single conversation object
+						importedData = [parsedData];
+					} else {
+						throw new Error(
+							'Invalid file format: expected array of conversations or single conversation object'
+						);
+					}
+
+					fullImportData = importedData;
+					availableConversations = importedData.map(
+						(item: { conv: DatabaseConversation; messages: DatabaseMessage[] }) => item.conv
+					);
+					messageCountMap = createMessageCountMap(importedData);
+					showImportDialog = true;
+				} catch (err: unknown) {
+					const message = err instanceof Error ? err.message : 'Unknown error';
+
+					console.error('Failed to parse file:', err);
+					alert(`Failed to parse file: ${message}`);
+				}
+			};
+
+			input.click();
+		} catch (err) {
+			console.error('Import failed:', err);
+			alert('Failed to import conversations');
+		}
+	}
+
+	async function handleImportConfirm(selectedConversations: DatabaseConversation[]) {
+		try {
+			const selectedIds = new Set(selectedConversations.map((c) => c.id));
+			const selectedData = $state
+				.snapshot(fullImportData)
+				.filter((item) => selectedIds.has(item.conv.id));
+
+			await conversationsStore.importConversationsData(selectedData);
+
+			importedConversations = selectedConversations;
+			showImportSummary = true;
+			showExportSummary = false;
+			showImportDialog = false;
+		} catch (err) {
+			console.error('Import failed:', err);
+			alert('Failed to import conversations. Please check the file format.');
+		}
+	}
+
+	async function handleDeleteAllClick() {
+		try {
+			const allConversations = conversations();
+
+			if (allConversations.length === 0) {
+				toast.info('No conversations to delete');
+				return;
+			}
+
+			showDeleteDialog = true;
+		} catch (err) {
+			console.error('Failed to load conversations for deletion:', err);
+			toast.error('Failed to load conversations');
+		}
+	}
+
+	async function handleDeleteAllConfirm() {
+		try {
+			await conversationsStore.deleteAll();
+
+			showDeleteDialog = false;
+		} catch (err) {
+			console.error('Failed to delete conversations:', err);
+		}
+	}
+
+	function handleDeleteAllCancel() {
+		showDeleteDialog = false;
+	}
+</script>
+
+<div class="space-y-6">
+	<div class="space-y-4">
+		<div class="grid">
+			<h4 class="mb-2 text-sm font-medium">Export Conversations</h4>
+
+			<p class="mb-4 text-sm text-muted-foreground">
+				Download all your conversations as a JSON file. This includes all messages, attachments, and
+				conversation history.
+			</p>
+
+			<Button
+				class="w-full justify-start justify-self-start md:w-auto"
+				onclick={handleExportClick}
+				variant="outline"
+			>
+				<Download class="mr-2 h-4 w-4" />
+
+				Export conversations
+			</Button>
+
+			{#if showExportSummary && exportedConversations.length > 0}
+				<div class="mt-4 grid overflow-x-auto rounded-lg border border-border/50 bg-muted/30 p-4">
+					<h5 class="mb-2 text-sm font-medium">
+						Exported {exportedConversations.length} conversation{exportedConversations.length === 1
+							? ''
+							: 's'}
+					</h5>
+
+					<ul class="space-y-1 text-sm text-muted-foreground">
+						{#each exportedConversations.slice(0, 10) as conv (conv.id)}
+							<li class="truncate">• {conv.name || 'Untitled conversation'}</li>
+						{/each}
+
+						{#if exportedConversations.length > 10}
+							<li class="italic">
+								... and {exportedConversations.length - 10} more
+							</li>
+						{/if}
+					</ul>
+				</div>
+			{/if}
+		</div>
+
+		<div class="grid border-t border-border/30 pt-4">
+			<h4 class="mb-2 text-sm font-medium">Import Conversations</h4>
+
+			<p class="mb-4 text-sm text-muted-foreground">
+				Import one or more conversations from a previously exported JSON file. This will merge with
+				your existing conversations.
+			</p>
+
+			<Button
+				class="w-full justify-start justify-self-start md:w-auto"
+				onclick={handleImportClick}
+				variant="outline"
+			>
+				<Upload class="mr-2 h-4 w-4" />
+				Import conversations
+			</Button>
+
+			{#if showImportSummary && importedConversations.length > 0}
+				<div class="mt-4 grid overflow-x-auto rounded-lg border border-border/50 bg-muted/30 p-4">
+					<h5 class="mb-2 text-sm font-medium">
+						Imported {importedConversations.length} conversation{importedConversations.length === 1
+							? ''
+							: 's'}
+					</h5>
+
+					<ul class="space-y-1 text-sm text-muted-foreground">
+						{#each importedConversations.slice(0, 10) as conv (conv.id)}
+							<li class="truncate">• {conv.name || 'Untitled conversation'}</li>
+						{/each}
+
+						{#if importedConversations.length > 10}
+							<li class="italic">
+								... and {importedConversations.length - 10} more
+							</li>
+						{/if}
+					</ul>
+				</div>
+			{/if}
+		</div>
+
+		<div class="grid border-t border-border/30 pt-4">
+			<h4 class="mb-2 text-sm font-medium text-destructive">Delete All Conversations</h4>
+
+			<p class="mb-4 text-sm text-muted-foreground">
+				Permanently delete all conversations and their messages. This action cannot be undone.
+				Consider exporting your conversations first if you want to keep a backup.
+			</p>
+
+			<Button
+				class="text-destructive-foreground w-full justify-start justify-self-start bg-destructive hover:bg-destructive/80 md:w-auto"
+				onclick={handleDeleteAllClick}
+				variant="destructive"
+			>
+				<Trash2 class="mr-2 h-4 w-4" />
+
+				Delete all conversations
+			</Button>
+		</div>
+	</div>
+</div>
+
+<DialogConversationSelection
+	conversations={availableConversations}
+	{messageCountMap}
+	mode="export"
+	bind:open={showExportDialog}
+	onCancel={() => (showExportDialog = false)}
+	onConfirm={handleExportConfirm}
+/>
+
+<DialogConversationSelection
+	conversations={availableConversations}
+	{messageCountMap}
+	mode="import"
+	bind:open={showImportDialog}
+	onCancel={() => (showImportDialog = false)}
+	onConfirm={handleImportConfirm}
+/>
+
+<DialogConfirmation
+	bind:open={showDeleteDialog}
+	title="Delete all conversations"
+	description="Are you sure you want to delete all conversations? This action cannot be undone and will permanently remove all your conversations and messages."
+	confirmText="Delete All"
+	cancelText="Cancel"
+	variant="destructive"
+	icon={Trash2}
+	onConfirm={handleDeleteAllConfirm}
+	onCancel={handleDeleteAllCancel}
+/>

tools/server/webui/src/lib/components/app/chat/ChatSettings/ChatSettingsParameterSourceIndicator.svelte

@@ -0,0 +1,18 @@
+<script lang="ts">
+	import { Wrench } from '@lucide/svelte';
+	import { Badge } from '$lib/components/ui/badge';
+
+	interface Props {
+		class?: string;
+	}
+
+	let { class: className = '' }: Props = $props();
+</script>
+
+<Badge
+	variant="secondary"
+	class="h-5 bg-orange-100 px-1.5 py-0.5 text-xs text-orange-800 dark:bg-orange-900 dark:text-orange-200 {className}"
+>
+	<Wrench class="mr-1 h-3 w-3" />
+	Custom
+</Badge>

tools/server/webui/src/lib/components/app/chat/ChatSidebar/ChatSidebar.svelte

@@ -0,0 +1,211 @@
+<script lang="ts">
+	import { goto } from '$app/navigation';
+	import { page } from '$app/state';
+	import { Trash2 } from '@lucide/svelte';
+	import { ChatSidebarConversationItem, DialogConfirmation } from '$lib/components/app';
+	import ScrollArea from '$lib/components/ui/scroll-area/scroll-area.svelte';
+	import * as Sidebar from '$lib/components/ui/sidebar';
+	import * as AlertDialog from '$lib/components/ui/alert-dialog';
+	import Input from '$lib/components/ui/input/input.svelte';
+	import { conversationsStore, conversations } from '$lib/stores/conversations.svelte';
+	import { chatStore } from '$lib/stores/chat.svelte';
+	import { getPreviewText } from '$lib/utils/text';
+	import ChatSidebarActions from './ChatSidebarActions.svelte';
+
+	const sidebar = Sidebar.useSidebar();
+
+	let currentChatId = $derived(page.params.id);
+	let isSearchModeActive = $state(false);
+	let searchQuery = $state('');
+	let showDeleteDialog = $state(false);
+	let showEditDialog = $state(false);
+	let selectedConversation = $state<DatabaseConversation | null>(null);
+	let editedName = $state('');
+	let selectedConversationNamePreview = $derived.by(() =>
+		selectedConversation ? getPreviewText(selectedConversation.name) : ''
+	);
+
+	let filteredConversations = $derived.by(() => {
+		if (searchQuery.trim().length > 0) {
+			return conversations().filter((conversation: { name: string }) =>
+				conversation.name.toLowerCase().includes(searchQuery.toLowerCase())
+			);
+		}
+
+		return conversations();
+	});
+
+	async function handleDeleteConversation(id: string) {
+		const conversation = conversations().find((conv) => conv.id === id);
+		if (conversation) {
+			selectedConversation = conversation;
+			showDeleteDialog = true;
+		}
+	}
+
+	async function handleEditConversation(id: string) {
+		const conversation = conversations().find((conv) => conv.id === id);
+		if (conversation) {
+			selectedConversation = conversation;
+			editedName = conversation.name;
+			showEditDialog = true;
+		}
+	}
+
+	function handleConfirmDelete() {
+		if (selectedConversation) {
+			showDeleteDialog = false;
+
+			setTimeout(() => {
+				conversationsStore.deleteConversation(selectedConversation.id);
+				selectedConversation = null;
+			}, 100); // Wait for animation to finish
+		}
+	}
+
+	function handleConfirmEdit() {
+		if (!editedName.trim() || !selectedConversation) return;
+
+		showEditDialog = false;
+
+		conversationsStore.updateConversationName(selectedConversation.id, editedName);
+		selectedConversation = null;
+	}
+
+	export function handleMobileSidebarItemClick() {
+		if (sidebar.isMobile) {
+			sidebar.toggle();
+		}
+	}
+
+	export function activateSearchMode() {
+		isSearchModeActive = true;
+	}
+
+	export function editActiveConversation() {
+		if (currentChatId) {
+			const activeConversation = filteredConversations.find((conv) => conv.id === currentChatId);
+
+			if (activeConversation) {
+				const event = new CustomEvent('edit-active-conversation', {
+					detail: { conversationId: currentChatId }
+				});
+				document.dispatchEvent(event);
+			}
+		}
+	}
+
+	async function selectConversation(id: string) {
+		if (isSearchModeActive) {
+			isSearchModeActive = false;
+			searchQuery = '';
+		}
+
+		await goto(`#/chat/${id}`);
+	}
+
+	function handleStopGeneration(id: string) {
+		chatStore.stopGenerationForChat(id);
+	}
+</script>
+
+<ScrollArea class="h-[100vh]">
+	<Sidebar.Header class=" top-0 z-10 gap-6 bg-sidebar/50 px-4 py-4 pb-2 backdrop-blur-lg md:sticky">
+		<a href="#/" onclick={handleMobileSidebarItemClick}>
+			<h1 class="inline-flex items-center gap-1 px-2 text-xl font-semibold">llama.cpp</h1>
+		</a>
+
+		<ChatSidebarActions {handleMobileSidebarItemClick} bind:isSearchModeActive bind:searchQuery />
+	</Sidebar.Header>
+
+	<Sidebar.Group class="mt-4 space-y-2 p-0 px-4">
+		{#if (filteredConversations.length > 0 && isSearchModeActive) || !isSearchModeActive}
+			<Sidebar.GroupLabel>
+				{isSearchModeActive ? 'Search results' : 'Conversations'}
+			</Sidebar.GroupLabel>
+		{/if}
+
+		<Sidebar.GroupContent>
+			<Sidebar.Menu>
+				{#each filteredConversations as conversation (conversation.id)}
+					<Sidebar.MenuItem class="mb-1">
+						<ChatSidebarConversationItem
+							conversation={{
+								id: conversation.id,
+								name: conversation.name,
+								lastModified: conversation.lastModified,
+								currNode: conversation.currNode
+							}}
+							{handleMobileSidebarItemClick}
+							isActive={currentChatId === conversation.id}
+							onSelect={selectConversation}
+							onEdit={handleEditConversation}
+							onDelete={handleDeleteConversation}
+							onStop={handleStopGeneration}
+						/>
+					</Sidebar.MenuItem>
+				{/each}
+
+				{#if filteredConversations.length === 0}
+					<div class="px-2 py-4 text-center">
+						<p class="mb-4 p-4 text-sm text-muted-foreground">
+							{searchQuery.length > 0
+								? 'No results found'
+								: isSearchModeActive
+									? 'Start typing to see results'
+									: 'No conversations yet'}
+						</p>
+					</div>
+				{/if}
+			</Sidebar.Menu>
+		</Sidebar.GroupContent>
+	</Sidebar.Group>
+</ScrollArea>
+
+<DialogConfirmation
+	bind:open={showDeleteDialog}
+	title="Delete Conversation"
+	description={selectedConversation
+		? `Are you sure you want to delete "${selectedConversationNamePreview}"? This action cannot be undone and will permanently remove all messages in this conversation.`
+		: ''}
+	confirmText="Delete"
+	cancelText="Cancel"
+	variant="destructive"
+	icon={Trash2}
+	onConfirm={handleConfirmDelete}
+	onCancel={() => {
+		showDeleteDialog = false;
+		selectedConversation = null;
+	}}
+/>
+
+<AlertDialog.Root bind:open={showEditDialog}>
+	<AlertDialog.Content>
+		<AlertDialog.Header>
+			<AlertDialog.Title>Edit Conversation Name</AlertDialog.Title>
+			<AlertDialog.Description>
+				<Input
+					class="mt-4 text-foreground"
+					onkeydown={(e) => {
+						if (e.key === 'Enter') {
+							e.preventDefault();
+							handleConfirmEdit();
+						}
+					}}
+					placeholder="Enter a new name"
+					type="text"
+					bind:value={editedName}
+				/>
+			</AlertDialog.Description>
+		</AlertDialog.Header>
+		<AlertDialog.Footer>
+			<AlertDialog.Cancel
+				onclick={() => {
+					showEditDialog = false;
+					selectedConversation = null;
+				}}>Cancel</AlertDialog.Cancel
+			>
+			<AlertDialog.Action onclick={handleConfirmEdit}>Save</AlertDialog.Action>
+		</AlertDialog.Footer>
+	</AlertDialog.Content>
+</AlertDialog.Root>

tools/server/webui/src/lib/components/app/chat/ChatSidebar/ChatSidebarActions.svelte

@@ -0,0 +1,81 @@
+<script lang="ts">
+	import { Search, SquarePen, X } from '@lucide/svelte';
+	import { KeyboardShortcutInfo } from '$lib/components/app';
+	import { Button } from '$lib/components/ui/button';
+	import { Input } from '$lib/components/ui/input';
+
+	interface Props {
+		handleMobileSidebarItemClick: () => void;
+		isSearchModeActive: boolean;
+		searchQuery: string;
+	}
+
+	let {
+		handleMobileSidebarItemClick,
+		isSearchModeActive = $bindable(),
+		searchQuery = $bindable()
+	}: Props = $props();
+
+	let searchInput: HTMLInputElement | null = $state(null);
+
+	function handleSearchModeDeactivate() {
+		isSearchModeActive = false;
+		searchQuery = '';
+	}
+
+	$effect(() => {
+		if (isSearchModeActive) {
+			searchInput?.focus();
+		}
+	});
+</script>
+
+<div class="space-y-0.5">
+	{#if isSearchModeActive}
+		<div class="relative">
+			<Search class="absolute top-2.5 left-2 h-4 w-4 text-muted-foreground" />
+
+			<Input
+				bind:ref={searchInput}
+				bind:value={searchQuery}
+				onkeydown={(e) => e.key === 'Escape' && handleSearchModeDeactivate()}
+				placeholder="Search conversations..."
+				class="pl-8"
+			/>
+
+			<X
+				class="cursor-pointertext-muted-foreground absolute top-2.5 right-2 h-4 w-4"
+				onclick={handleSearchModeDeactivate}
+			/>
+		</div>
+	{:else}
+		<Button
+			class="w-full justify-between hover:[&>kbd]:opacity-100"
+			href="?new_chat=true#/"
+			onclick={handleMobileSidebarItemClick}
+			variant="ghost"
+		>
+			<div class="flex items-center gap-2">
+				<SquarePen class="h-4 w-4" />
+				New chat
+			</div>
+
+			<KeyboardShortcutInfo keys={['shift', 'cmd', 'o']} />
+		</Button>
+
+		<Button
+			class="w-full justify-between hover:[&>kbd]:opacity-100"
+			onclick={() => {
+				isSearchModeActive = true;
+			}}
+			variant="ghost"
+		>
+			<div class="flex items-center gap-2">
+				<Search class="h-4 w-4" />
+				Search conversations
+			</div>
+
+			<KeyboardShortcutInfo keys={['cmd', 'k']} />
+		</Button>
+	{/if}
+</div>

tools/server/webui/src/lib/components/app/chat/ChatSidebar/ChatSidebarConversationItem.svelte

@@ -0,0 +1,200 @@
+<script lang="ts">
+	import { Trash2, Pencil, MoreHorizontal, Download, Loader2, Square } from '@lucide/svelte';
+	import { ActionDropdown } from '$lib/components/app';
+	import * as Tooltip from '$lib/components/ui/tooltip';
+	import { getAllLoadingChats } from '$lib/stores/chat.svelte';
+	import { conversationsStore } from '$lib/stores/conversations.svelte';
+	import { onMount } from 'svelte';
+
+	interface Props {
+		isActive?: boolean;
+		conversation: DatabaseConversation;
+		handleMobileSidebarItemClick?: () => void;
+		onDelete?: (id: string) => void;
+		onEdit?: (id: string) => void;
+		onSelect?: (id: string) => void;
+		onStop?: (id: string) => void;
+	}
+
+	let {
+		conversation,
+		handleMobileSidebarItemClick,
+		onDelete,
+		onEdit,
+		onSelect,
+		onStop,
+		isActive = false
+	}: Props = $props();
+
+	let renderActionsDropdown = $state(false);
+	let dropdownOpen = $state(false);
+
+	let isLoading = $derived(getAllLoadingChats().includes(conversation.id));
+
+	function handleEdit(event: Event) {
+		event.stopPropagation();
+		onEdit?.(conversation.id);
+	}
+
+	function handleDelete(event: Event) {
+		event.stopPropagation();
+		onDelete?.(conversation.id);
+	}
+
+	function handleStop(event: Event) {
+		event.stopPropagation();
+		onStop?.(conversation.id);
+	}
+
+	function handleGlobalEditEvent(event: Event) {
+		const customEvent = event as CustomEvent<{ conversationId: string }>;
+
+		if (customEvent.detail.conversationId === conversation.id && isActive) {
+			handleEdit(event);
+		}
+	}
+
+	function handleMouseLeave() {
+		if (!dropdownOpen) {
+			renderActionsDropdown = false;
+		}
+	}
+
+	function handleMouseOver() {
+		renderActionsDropdown = true;
+	}
+
+	function handleSelect() {
+		onSelect?.(conversation.id);
+	}
+
+	$effect(() => {
+		if (!dropdownOpen) {
+			renderActionsDropdown = false;
+		}
+	});
+
+	onMount(() => {
+		document.addEventListener('edit-active-conversation', handleGlobalEditEvent as EventListener);
+
+		return () => {
+			document.removeEventListener(
+				'edit-active-conversation',
+				handleGlobalEditEvent as EventListener
+			);
+		};
+	});
+</script>
+
+<!-- svelte-ignore a11y_mouse_events_have_key_events -->
+<button
+	class="group flex min-h-9 w-full cursor-pointer items-center justify-between space-x-3 rounded-lg px-3 py-1.5 text-left transition-colors hover:bg-foreground/10 {isActive
+		? 'bg-foreground/5 text-accent-foreground'
+		: ''}"
+	onclick={handleSelect}
+	onmouseover={handleMouseOver}
+	onmouseleave={handleMouseLeave}
+>
+	<div class="flex min-w-0 flex-1 items-center gap-2">
+		{#if isLoading}
+			<Tooltip.Root>
+				<Tooltip.Trigger>
+					<div
+						class="stop-button flex h-4 w-4 shrink-0 cursor-pointer items-center justify-center rounded text-muted-foreground transition-colors hover:text-foreground"
+						onclick={handleStop}
+						onkeydown={(e) => e.key === 'Enter' && handleStop(e)}
+						role="button"
+						tabindex="0"
+						aria-label="Stop generation"
+					>
+						<Loader2 class="loading-icon h-3.5 w-3.5 animate-spin" />
+
+						<Square class="stop-icon hidden h-3 w-3 fill-current text-destructive" />
+					</div>
+				</Tooltip.Trigger>
+
+				<Tooltip.Content>
+					<p>Stop generation</p>
+				</Tooltip.Content>
+			</Tooltip.Root>
+		{/if}
+
+		<!-- svelte-ignore a11y_click_events_have_key_events -->
+		<!-- svelte-ignore a11y_no_static_element_interactions -->
+		<span class="truncate text-sm font-medium" onclick={handleMobileSidebarItemClick}>
+			{conversation.name}
+		</span>
+	</div>
+
+	{#if renderActionsDropdown}
+		<div class="actions flex items-center">
+			<ActionDropdown
+				triggerIcon={MoreHorizontal}
+				triggerTooltip="More actions"
+				bind:open={dropdownOpen}
+				actions={[
+					{
+						icon: Pencil,
+						label: 'Edit',
+						onclick: handleEdit,
+						shortcut: ['shift', 'cmd', 'e']
+					},
+					{
+						icon: Download,
+						label: 'Export',
+						onclick: (e) => {
+							e.stopPropagation();
+							conversationsStore.downloadConversation(conversation.id);
+						},
+						shortcut: ['shift', 'cmd', 's']
+					},
+					{
+						icon: Trash2,
+						label: 'Delete',
+						onclick: handleDelete,
+						variant: 'destructive',
+						shortcut: ['shift', 'cmd', 'd'],
+						separator: true
+					}
+				]}
+			/>
+		</div>
+	{/if}
+</button>
+
+<style>
+	button {
+		:global([data-slot='dropdown-menu-trigger']:not([data-state='open'])) {
+			opacity: 0;
+		}
+
+		&:is(:hover) :global([data-slot='dropdown-menu-trigger']) {
+			opacity: 1;
+		}
+		@media (max-width: 768px) {
+			:global([data-slot='dropdown-menu-trigger']) {
+				opacity: 1 !important;
+			}
+		}
+
+		.stop-button {
+			:global(.stop-icon) {
+				display: none;
+			}
+
+			:global(.loading-icon) {
+				display: block;
+			}
+		}
+
+		&:is(:hover) .stop-button {
+			:global(.stop-icon) {
+				display: block;
+			}
+
+			:global(.loading-icon) {
+				display: none;
+			}
+		}
+	}
+</style>

tools/server/webui/src/lib/components/app/chat/ChatSidebar/ChatSidebarSearch.svelte

@@ -0,0 +1,19 @@
+<script lang="ts">
+	import { SearchInput } from '$lib/components/app';
+
+	interface Props {
+		value?: string;
+		placeholder?: string;
+		onInput?: (value: string) => void;
+		class?: string;
+	}
+
+	let {
+		value = $bindable(''),
+		placeholder = 'Search conversations...',
+		onInput,
+		class: className
+	}: Props = $props();
+</script>
+
+<SearchInput bind:value {placeholder} {onInput} class="mb-4 {className}" />

tools/server/webui/src/lib/components/app/chat/ChatSidebar/handle-mobile-sidebar-item-click.ts

@@ -0,0 +1,9 @@
+import { useSidebar } from '$lib/components/ui/sidebar';
+
+const sidebar = useSidebar();
+
+export function handleMobileSidebarItemClick() {
+	if (sidebar.isMobile) {
+		sidebar.toggle();
+	}
+}

tools/server/webui/src/lib/components/app/dialogs/DialogChatAttachmentPreview.svelte

@@ -0,0 +1,67 @@
+<script lang="ts">
+	import * as Dialog from '$lib/components/ui/dialog';
+	import { ChatAttachmentPreview } from '$lib/components/app';
+	import { formatFileSize } from '$lib/utils';
+
+	interface Props {
+		open: boolean;
+		onOpenChange?: (open: boolean) => void;
+		// Either an uploaded file or a stored attachment
+		uploadedFile?: ChatUploadedFile;
+		attachment?: DatabaseMessageExtra;
+		// For uploaded files
+		preview?: string;
+		name?: string;
+		size?: number;
+		textContent?: string;
+		// For vision modality check
+		activeModelId?: string;
+	}
+
+	let {
+		open = $bindable(),
+		onOpenChange,
+		uploadedFile,
+		attachment,
+		preview,
+		name,
+		size,
+		textContent,
+		activeModelId
+	}: Props = $props();
+
+	let chatAttachmentPreviewRef: ChatAttachmentPreview | undefined = $state();
+
+	let displayName = $derived(uploadedFile?.name || attachment?.name || name || 'Unknown File');
+
+	let displaySize = $derived(uploadedFile?.size || size);
+
+	$effect(() => {
+		if (open && chatAttachmentPreviewRef) {
+			chatAttachmentPreviewRef.reset();
+		}
+	});
+</script>
+
+<Dialog.Root bind:open {onOpenChange}>
+	<Dialog.Content class="grid max-h-[90vh] max-w-5xl overflow-hidden sm:w-auto sm:max-w-6xl">
+		<Dialog.Header>
+			<Dialog.Title class="pr-8">{displayName}</Dialog.Title>
+			<Dialog.Description>
+				{#if displaySize}
+					{formatFileSize(displaySize)}
+				{/if}
+			</Dialog.Description>
+		</Dialog.Header>
+
+		<ChatAttachmentPreview
+			bind:this={chatAttachmentPreviewRef}
+			{uploadedFile}
+			{attachment}
+			{preview}
+			name={displayName}
+			{textContent}
+			{activeModelId}
+		/>
+	</Dialog.Content>
+</Dialog.Root>

tools/server/webui/src/lib/components/app/dialogs/DialogChatAttachmentsViewAll.svelte

@@ -0,0 +1,54 @@
+<script lang="ts">
+	import * as Dialog from '$lib/components/ui/dialog';
+	import { ChatAttachmentsViewAll } from '$lib/components/app';
+
+	interface Props {
+		open?: boolean;
+		uploadedFiles?: ChatUploadedFile[];
+		attachments?: DatabaseMessageExtra[];
+		readonly?: boolean;
+		onFileRemove?: (fileId: string) => void;
+		imageHeight?: string;
+		imageWidth?: string;
+		imageClass?: string;
+		activeModelId?: string;
+	}
+
+	let {
+		open = $bindable(false),
+		uploadedFiles = [],
+		attachments = [],
+		readonly = false,
+		onFileRemove,
+		imageHeight = 'h-24',
+		imageWidth = 'w-auto',
+		imageClass = '',
+		activeModelId
+	}: Props = $props();
+
+	let totalCount = $derived(uploadedFiles.length + attachments.length);
+</script>
+
+<Dialog.Root bind:open>
+	<Dialog.Portal>
+		<Dialog.Overlay />
+
+		<Dialog.Content class="flex !max-h-[90vh] !max-w-6xl flex-col">
+			<Dialog.Header>
+				<Dialog.Title>All Attachments ({totalCount})</Dialog.Title>
+				<Dialog.Description>View and manage all attached files</Dialog.Description>
+			</Dialog.Header>
+
+			<ChatAttachmentsViewAll
+				{uploadedFiles}
+				{attachments}
+				{readonly}
+				{onFileRemove}
+				{imageHeight}
+				{imageWidth}
+				{imageClass}
+				{activeModelId}
+			/>
+		</Dialog.Content>
+	</Dialog.Portal>
+</Dialog.Root>

tools/server/webui/src/lib/components/app/dialogs/DialogChatError.svelte

@@ -0,0 +1,70 @@
+<script lang="ts">
+	import * as AlertDialog from '$lib/components/ui/alert-dialog';
+	import { AlertTriangle, TimerOff } from '@lucide/svelte';
+
+	interface Props {
+		open: boolean;
+		type: 'timeout' | 'server';
+		message: string;
+		contextInfo?: { n_prompt_tokens: number; n_ctx: number };
+		onOpenChange?: (open: boolean) => void;
+	}
+
+	let { open = $bindable(), type, message, contextInfo, onOpenChange }: Props = $props();
+
+	const isTimeout = $derived(type === 'timeout');
+	const title = $derived(isTimeout ? 'TCP Timeout' : 'Server Error');
+	const description = $derived(
+		isTimeout
+			? 'The request did not receive a response from the server before timing out.'
+			: 'The server responded with an error message. Review the details below.'
+	);
+	const iconClass = $derived(isTimeout ? 'text-destructive' : 'text-amber-500');
+	const badgeClass = $derived(
+		isTimeout
+			? 'border-destructive/40 bg-destructive/10 text-destructive'
+			: 'border-amber-500/40 bg-amber-500/10 text-amber-600 dark:text-amber-400'
+	);
+
+	function handleOpenChange(newOpen: boolean) {
+		open = newOpen;
+		onOpenChange?.(newOpen);
+	}
+</script>
+
+<AlertDialog.Root {open} onOpenChange={handleOpenChange}>
+	<AlertDialog.Content>
+		<AlertDialog.Header>
+			<AlertDialog.Title class="flex items-center gap-2">
+				{#if isTimeout}
+					<TimerOff class={`h-5 w-5 ${iconClass}`} />
+				{:else}
+					<AlertTriangle class={`h-5 w-5 ${iconClass}`} />
+				{/if}
+
+				{title}
+			</AlertDialog.Title>
+
+			<AlertDialog.Description>
+				{description}
+			</AlertDialog.Description>
+		</AlertDialog.Header>
+
+		<div class={`rounded-lg border px-4 py-3 text-sm ${badgeClass}`}>
+			<p class="font-medium">{message}</p>
+			{#if contextInfo}
+				<div class="mt-2 space-y-1 text-xs opacity-80">
+					<p>
+						<span class="font-medium">Prompt tokens:</span>
+						{contextInfo.n_prompt_tokens.toLocaleString()}
+					</p>
+					<p><span class="font-medium">Context size:</span> {contextInfo.n_ctx.toLocaleString()}</p>
+				</div>
+			{/if}
+		</div>
+
+		<AlertDialog.Footer>
+			<AlertDialog.Action onclick={() => handleOpenChange(false)}>Close</AlertDialog.Action>
+		</AlertDialog.Footer>
+	</AlertDialog.Content>
+</AlertDialog.Root>

tools/server/webui/src/lib/components/app/dialogs/DialogChatSettings.svelte

@@ -0,0 +1,37 @@
+<script lang="ts">
+	import * as Dialog from '$lib/components/ui/dialog';
+	import { ChatSettings } from '$lib/components/app';
+
+	interface Props {
+		onOpenChange?: (open: boolean) => void;
+		open?: boolean;
+	}
+
+	let { onOpenChange, open = false }: Props = $props();
+
+	let chatSettingsRef: ChatSettings | undefined = $state();
+
+	function handleClose() {
+		onOpenChange?.(false);
+	}
+
+	function handleSave() {
+		onOpenChange?.(false);
+	}
+
+	$effect(() => {
+		if (open && chatSettingsRef) {
+			chatSettingsRef.reset();
+		}
+	});
+</script>
+
+<Dialog.Root {open} onOpenChange={handleClose}>
+	<Dialog.Content
+		class="z-999999 flex h-[100dvh] max-h-[100dvh] min-h-[100dvh] flex-col gap-0 rounded-none p-0
+			md:h-[64vh] md:max-h-[64vh] md:min-h-0 md:rounded-lg"
+		style="max-width: 48rem;"
+	>
+		<ChatSettings bind:this={chatSettingsRef} onSave={handleSave} />
+	</Dialog.Content>
+</Dialog.Root>

tools/server/webui/src/lib/components/app/dialogs/DialogConfirmation.svelte

@@ -0,0 +1,72 @@
+<script lang="ts">
+	import * as AlertDialog from '$lib/components/ui/alert-dialog';
+	import type { Component } from 'svelte';
+
+	interface Props {
+		open: boolean;
+		title: string;
+		description: string;
+		confirmText?: string;
+		cancelText?: string;
+		variant?: 'default' | 'destructive';
+		icon?: Component;
+		onConfirm: () => void;
+		onCancel: () => void;
+		onKeydown?: (event: KeyboardEvent) => void;
+	}
+
+	let {
+		open = $bindable(),
+		title,
+		description,
+		confirmText = 'Confirm',
+		cancelText = 'Cancel',
+		variant = 'default',
+		icon,
+		onConfirm,
+		onCancel,
+		onKeydown
+	}: Props = $props();
+
+	function handleKeydown(event: KeyboardEvent) {
+		if (event.key === 'Enter') {
+			event.preventDefault();
+			onConfirm();
+		}
+		onKeydown?.(event);
+	}
+
+	function handleOpenChange(newOpen: boolean) {
+		if (!newOpen) {
+			onCancel();
+		}
+	}
+</script>
+
+<AlertDialog.Root {open} onOpenChange={handleOpenChange}>
+	<AlertDialog.Content onkeydown={handleKeydown}>
+		<AlertDialog.Header>
+			<AlertDialog.Title class="flex items-center gap-2">
+				{#if icon}
+					{@const IconComponent = icon}
+					<IconComponent class="h-5 w-5 {variant === 'destructive' ? 'text-destructive' : ''}" />
+				{/if}
+				{title}
+			</AlertDialog.Title>
+
+			<AlertDialog.Description>
+				{description}
+			</AlertDialog.Description>
+		</AlertDialog.Header>
+
+		<AlertDialog.Footer>
+			<AlertDialog.Cancel onclick={onCancel}>{cancelText}</AlertDialog.Cancel>
+			<AlertDialog.Action
+				onclick={onConfirm}
+				class={variant === 'destructive' ? 'bg-destructive text-white hover:bg-destructive/80' : ''}
+			>
+				{confirmText}
+			</AlertDialog.Action>
+		</AlertDialog.Footer>
+	</AlertDialog.Content>
+</AlertDialog.Root>

tools/server/webui/src/lib/components/app/dialogs/DialogConversationSelection.svelte

@@ -0,0 +1,68 @@
+<script lang="ts">
+	import * as Dialog from '$lib/components/ui/dialog';
+	import { ConversationSelection } from '$lib/components/app';
+
+	interface Props {
+		conversations: DatabaseConversation[];
+		messageCountMap?: Map<string, number>;
+		mode: 'export' | 'import';
+		onCancel: () => void;
+		onConfirm: (selectedConversations: DatabaseConversation[]) => void;
+		open?: boolean;
+	}
+
+	let {
+		conversations,
+		messageCountMap = new Map(),
+		mode,
+		onCancel,
+		onConfirm,
+		open = $bindable(false)
+	}: Props = $props();
+
+	let conversationSelectionRef: ConversationSelection | undefined = $state();
+
+	let previousOpen = $state(false);
+
+	$effect(() => {
+		if (open && !previousOpen && conversationSelectionRef) {
+			conversationSelectionRef.reset();
+		} else if (!open && previousOpen) {
+			onCancel();
+		}
+
+		previousOpen = open;
+	});
+</script>
+
+<Dialog.Root bind:open>
+	<Dialog.Portal>
+		<Dialog.Overlay class="z-[1000000]" />
+
+		<Dialog.Content class="z-[1000001] max-w-2xl">
+			<Dialog.Header>
+				<Dialog.Title>
+					Select Conversations to {mode === 'export' ? 'Export' : 'Import'}
+				</Dialog.Title>
+				<Dialog.Description>
+					{#if mode === 'export'}
+						Choose which conversations you want to export. Selected conversations will be downloaded
+						as a JSON file.
+					{:else}
+						Choose which conversations you want to import. Selected conversations will be merged
+						with your existing conversations.
+					{/if}
+				</Dialog.Description>
+			</Dialog.Header>
+
+			<ConversationSelection
+				bind:this={conversationSelectionRef}
+				{conversations}
+				{messageCountMap}
+				{mode}
+				{onCancel}
+				{onConfirm}
+			/>
+		</Dialog.Content>
+	</Dialog.Portal>
+</Dialog.Root>

tools/server/webui/src/lib/components/app/dialogs/DialogConversationTitleUpdate.svelte

@@ -0,0 +1,46 @@
+<script lang="ts">
+	import * as AlertDialog from '$lib/components/ui/alert-dialog';
+	import { Button } from '$lib/components/ui/button';
+
+	interface Props {
+		open: boolean;
+		currentTitle: string;
+		newTitle: string;
+		onConfirm: () => void;
+		onCancel: () => void;
+	}
+
+	let { open = $bindable(), currentTitle, newTitle, onConfirm, onCancel }: Props = $props();
+</script>
+
+<AlertDialog.Root bind:open>
+	<AlertDialog.Content>
+		<AlertDialog.Header>
+			<AlertDialog.Title>Update Conversation Title?</AlertDialog.Title>
+
+			<AlertDialog.Description>
+				Do you want to update the conversation title to match the first message content?
+			</AlertDialog.Description>
+		</AlertDialog.Header>
+
+		<div class="space-y-4 pt-2 pb-6">
+			<div class="space-y-2">
+				<p class="text-sm font-medium text-muted-foreground">Current title:</p>
+
+				<p class="rounded-md bg-muted/50 p-3 text-sm font-medium">{currentTitle}</p>
+			</div>
+
+			<div class="space-y-2">
+				<p class="text-sm font-medium text-muted-foreground">New title would be:</p>
+
+				<p class="rounded-md bg-muted/50 p-3 text-sm font-medium">{newTitle}</p>
+			</div>
+		</div>
+
+		<AlertDialog.Footer>
+			<Button variant="outline" onclick={onCancel}>Keep Current Title</Button>
+
+			<Button onclick={onConfirm}>Update Title</Button>
+		</AlertDialog.Footer>
+	</AlertDialog.Content>
+</AlertDialog.Root>

tools/server/webui/src/lib/components/app/dialogs/DialogEmptyFileAlert.svelte

@@ -0,0 +1,61 @@
+<script lang="ts">
+	import * as AlertDialog from '$lib/components/ui/alert-dialog';
+	import { FileX } from '@lucide/svelte';
+
+	interface Props {
+		open: boolean;
+		emptyFiles: string[];
+		onOpenChange?: (open: boolean) => void;
+	}
+
+	let { open = $bindable(), emptyFiles, onOpenChange }: Props = $props();
+
+	function handleOpenChange(newOpen: boolean) {
+		open = newOpen;
+		onOpenChange?.(newOpen);
+	}
+</script>
+
+<AlertDialog.Root {open} onOpenChange={handleOpenChange}>
+	<AlertDialog.Content>
+		<AlertDialog.Header>
+			<AlertDialog.Title class="flex items-center gap-2">
+				<FileX class="h-5 w-5 text-destructive" />
+
+				Empty Files Detected
+			</AlertDialog.Title>
+
+			<AlertDialog.Description>
+				The following files are empty and have been removed from your attachments:
+			</AlertDialog.Description>
+		</AlertDialog.Header>
+
+		<div class="space-y-3 text-sm">
+			<div class="rounded-lg bg-muted p-3">
+				<div class="mb-2 font-medium">Empty Files:</div>
+
+				<ul class="list-inside list-disc space-y-1 text-muted-foreground">
+					{#each emptyFiles as fileName (fileName)}
+						<li class="font-mono text-sm">{fileName}</li>
+					{/each}
+				</ul>
+			</div>
+
+			<div>
+				<div class="mb-2 font-medium">What happened:</div>
+
+				<ul class="list-inside list-disc space-y-1 text-muted-foreground">
+					<li>Empty files cannot be processed or sent to the AI model</li>
+
+					<li>These files have been automatically removed from your attachments</li>
+
+					<li>You can try uploading files with content instead</li>
+				</ul>
+			</div>
+		</div>
+
+		<AlertDialog.Footer>
+			<AlertDialog.Action onclick={() => handleOpenChange(false)}>Got it</AlertDialog.Action>
+		</AlertDialog.Footer>
+	</AlertDialog.Content>
+</AlertDialog.Root>

tools/server/webui/src/lib/components/app/dialogs/DialogModelInformation.svelte

@@ -0,0 +1,211 @@
+<script lang="ts">
+	import * as Dialog from '$lib/components/ui/dialog';
+	import * as Table from '$lib/components/ui/table';
+	import { BadgeModality, CopyToClipboardIcon } from '$lib/components/app';
+	import { serverStore } from '$lib/stores/server.svelte';
+	import { modelsStore, modelOptions, modelsLoading } from '$lib/stores/models.svelte';
+	import { formatFileSize, formatParameters, formatNumber } from '$lib/utils';
+
+	interface Props {
+		open?: boolean;
+		onOpenChange?: (open: boolean) => void;
+	}
+
+	let { open = $bindable(), onOpenChange }: Props = $props();
+
+	let serverProps = $derived(serverStore.props);
+	let modelName = $derived(modelsStore.singleModelName);
+	let models = $derived(modelOptions());
+	let isLoadingModels = $derived(modelsLoading());
+
+	// Get the first model for single-model mode display
+	let firstModel = $derived(models[0] ?? null);
+
+	// Get modalities from modelStore using the model ID from the first model
+	let modalities = $derived.by(() => {
+		if (!firstModel?.id) return [];
+		return modelsStore.getModelModalitiesArray(firstModel.id);
+	});
+
+	// Ensure models are fetched when dialog opens
+	$effect(() => {
+		if (open && models.length === 0) {
+			modelsStore.fetch();
+		}
+	});
+</script>
+
+<Dialog.Root bind:open {onOpenChange}>
+	<Dialog.Content class="@container z-9999 !max-w-[60rem] max-w-full">
+		<style>
+			@container (max-width: 56rem) {
+				.resizable-text-container {
+					max-width: calc(100vw - var(--threshold));
+				}
+			}
+		</style>
+
+		<Dialog.Header>
+			<Dialog.Title>Model Information</Dialog.Title>
+			<Dialog.Description>Current model details and capabilities</Dialog.Description>
+		</Dialog.Header>
+
+		<div class="space-y-6 py-4">
+			{#if isLoadingModels}
+				<div class="flex items-center justify-center py-8">
+					<div class="text-sm text-muted-foreground">Loading model information...</div>
+				</div>
+			{:else if firstModel}
+				{@const modelMeta = firstModel.meta}
+
+				{#if serverProps}
+					<Table.Root>
+						<Table.Header>
+							<Table.Row>
+								<Table.Head class="w-[10rem]">Model</Table.Head>
+
+								<Table.Head>
+									<div class="inline-flex items-center gap-2">
+										<span
+											class="resizable-text-container min-w-0 flex-1 truncate"
+											style:--threshold="12rem"
+										>
+											{modelName}
+										</span>
+
+										<CopyToClipboardIcon
+											text={modelName || ''}
+											canCopy={!!modelName}
+											ariaLabel="Copy model name to clipboard"
+										/>
+									</div>
+								</Table.Head>
+							</Table.Row>
+						</Table.Header>
+						<Table.Body>
+							<!-- Model Path -->
+							<Table.Row>
+								<Table.Cell class="h-10 align-middle font-medium">File Path</Table.Cell>
+
+								<Table.Cell
+									class="inline-flex h-10 items-center gap-2 align-middle font-mono text-xs"
+								>
+									<span
+										class="resizable-text-container min-w-0 flex-1 truncate"
+										style:--threshold="14rem"
+									>
+										{serverProps.model_path}
+									</span>
+
+									<CopyToClipboardIcon
+										text={serverProps.model_path}
+										ariaLabel="Copy model path to clipboard"
+									/>
+								</Table.Cell>
+							</Table.Row>
+
+							<!-- Context Size -->
+							<Table.Row>
+								<Table.Cell class="h-10 align-middle font-medium">Context Size</Table.Cell>
+								<Table.Cell
+									>{formatNumber(serverProps.default_generation_settings.n_ctx)} tokens</Table.Cell
+								>
+							</Table.Row>
+
+							<!-- Training Context -->
+							{#if modelMeta?.n_ctx_train}
+								<Table.Row>
+									<Table.Cell class="h-10 align-middle font-medium">Training Context</Table.Cell>
+									<Table.Cell>{formatNumber(modelMeta.n_ctx_train)} tokens</Table.Cell>
+								</Table.Row>
+							{/if}
+
+							<!-- Model Size -->
+							{#if modelMeta?.size}
+								<Table.Row>
+									<Table.Cell class="h-10 align-middle font-medium">Model Size</Table.Cell>
+									<Table.Cell>{formatFileSize(modelMeta.size)}</Table.Cell>
+								</Table.Row>
+							{/if}
+
+							<!-- Parameters -->
+							{#if modelMeta?.n_params}
+								<Table.Row>
+									<Table.Cell class="h-10 align-middle font-medium">Parameters</Table.Cell>
+									<Table.Cell>{formatParameters(modelMeta.n_params)}</Table.Cell>
+								</Table.Row>
+							{/if}
+
+							<!-- Embedding Size -->
+							{#if modelMeta?.n_embd}
+								<Table.Row>
+									<Table.Cell class="align-middle font-medium">Embedding Size</Table.Cell>
+									<Table.Cell>{formatNumber(modelMeta.n_embd)}</Table.Cell>
+								</Table.Row>
+							{/if}
+
+							<!-- Vocabulary Size -->
+							{#if modelMeta?.n_vocab}
+								<Table.Row>
+									<Table.Cell class="align-middle font-medium">Vocabulary Size</Table.Cell>
+									<Table.Cell>{formatNumber(modelMeta.n_vocab)} tokens</Table.Cell>
+								</Table.Row>
+							{/if}
+
+							<!-- Vocabulary Type -->
+							{#if modelMeta?.vocab_type}
+								<Table.Row>
+									<Table.Cell class="align-middle font-medium">Vocabulary Type</Table.Cell>
+									<Table.Cell class="align-middle capitalize">{modelMeta.vocab_type}</Table.Cell>
+								</Table.Row>
+							{/if}
+
+							<!-- Total Slots -->
+							<Table.Row>
+								<Table.Cell class="align-middle font-medium">Parallel Slots</Table.Cell>
+								<Table.Cell>{serverProps.total_slots}</Table.Cell>
+							</Table.Row>
+
+							<!-- Modalities -->
+							{#if modalities.length > 0}
+								<Table.Row>
+									<Table.Cell class="align-middle font-medium">Modalities</Table.Cell>
+									<Table.Cell>
+										<div class="flex flex-wrap gap-1">
+											<BadgeModality {modalities} />
+										</div>
+									</Table.Cell>
+								</Table.Row>
+							{/if}
+
+							<!-- Build Info -->
+							<Table.Row>
+								<Table.Cell class="align-middle font-medium">Build Info</Table.Cell>
+								<Table.Cell class="align-middle font-mono text-xs"
+									>{serverProps.build_info}</Table.Cell
+								>
+							</Table.Row>
+
+							<!-- Chat Template -->
+							{#if serverProps.chat_template}
+								<Table.Row>
+									<Table.Cell class="align-middle font-medium">Chat Template</Table.Cell>
+									<Table.Cell class="py-10">
+										<div class="max-h-120 overflow-y-auto rounded-md bg-muted p-4">
+											<pre
+												class="font-mono text-xs whitespace-pre-wrap">{serverProps.chat_template}</pre>
+										</div>
+									</Table.Cell>
+								</Table.Row>
+							{/if}
+						</Table.Body>
+					</Table.Root>
+				{/if}
+			{:else if !isLoadingModels}
+				<div class="flex items-center justify-center py-8">
+					<div class="text-sm text-muted-foreground">No model information available</div>
+				</div>
+			{/if}
+		</div>
+	</Dialog.Content>
+</Dialog.Root>

tools/server/webui/src/lib/components/app/dialogs/DialogModelNotAvailable.svelte

@@ -0,0 +1,76 @@
+<script lang="ts">
+	import * as AlertDialog from '$lib/components/ui/alert-dialog';
+	import { AlertTriangle, ArrowRight } from '@lucide/svelte';
+	import { goto } from '$app/navigation';
+	import { page } from '$app/state';
+
+	interface Props {
+		open: boolean;
+		modelName: string;
+		availableModels?: string[];
+		onOpenChange?: (open: boolean) => void;
+	}
+
+	let { open = $bindable(), modelName, availableModels = [], onOpenChange }: Props = $props();
+
+	function handleOpenChange(newOpen: boolean) {
+		open = newOpen;
+		onOpenChange?.(newOpen);
+	}
+
+	function handleSelectModel(model: string) {
+		// Build URL with selected model, preserving other params
+		const url = new URL(page.url);
+		url.searchParams.set('model', model);
+
+		handleOpenChange(false);
+		goto(url.toString());
+	}
+</script>
+
+<AlertDialog.Root {open} onOpenChange={handleOpenChange}>
+	<AlertDialog.Content class="max-w-lg">
+		<AlertDialog.Header>
+			<AlertDialog.Title class="flex items-center gap-2">
+				<AlertTriangle class="h-5 w-5 text-amber-500" />
+				Model Not Available
+			</AlertDialog.Title>
+
+			<AlertDialog.Description>
+				The requested model could not be found. Select an available model to continue.
+			</AlertDialog.Description>
+		</AlertDialog.Header>
+
+		<div class="space-y-3">
+			<div class="rounded-lg border border-amber-500/40 bg-amber-500/10 px-4 py-3 text-sm">
+				<p class="font-medium text-amber-600 dark:text-amber-400">
+					Requested: <code class="rounded bg-amber-500/20 px-1.5 py-0.5">{modelName}</code>
+				</p>
+			</div>
+
+			{#if availableModels.length > 0}
+				<div class="text-sm">
+					<p class="mb-2 font-medium text-muted-foreground">Select an available model:</p>
+					<div class="max-h-48 space-y-1 overflow-y-auto rounded-md border p-1">
+						{#each availableModels as model (model)}
+							<button
+								type="button"
+								class="group flex w-full items-center justify-between gap-2 rounded-sm px-3 py-2 text-left text-sm transition-colors hover:bg-accent hover:text-accent-foreground"
+								onclick={() => handleSelectModel(model)}
+							>
+								<span class="min-w-0 truncate font-mono text-xs">{model}</span>
+								<ArrowRight
+									class="h-4 w-4 shrink-0 text-muted-foreground opacity-0 transition-opacity group-hover:opacity-100"
+								/>
+							</button>
+						{/each}
+					</div>
+				</div>
+			{/if}
+		</div>
+
+		<AlertDialog.Footer>
+			<AlertDialog.Action onclick={() => handleOpenChange(false)}>Cancel</AlertDialog.Action>
+		</AlertDialog.Footer>
+	</AlertDialog.Content>
+</AlertDialog.Root>

tools/server/webui/src/lib/components/app/index.ts

@@ -0,0 +1,75 @@
+// Chat
+
+export { default as ChatAttachmentPreview } from './chat/ChatAttachments/ChatAttachmentPreview.svelte';
+export { default as ChatAttachmentThumbnailFile } from './chat/ChatAttachments/ChatAttachmentThumbnailFile.svelte';
+export { default as ChatAttachmentThumbnailImage } from './chat/ChatAttachments/ChatAttachmentThumbnailImage.svelte';
+export { default as ChatAttachmentsList } from './chat/ChatAttachments/ChatAttachmentsList.svelte';
+export { default as ChatAttachmentsViewAll } from './chat/ChatAttachments/ChatAttachmentsViewAll.svelte';
+
+export { default as ChatForm } from './chat/ChatForm/ChatForm.svelte';
+export { default as ChatFormActionFileAttachments } from './chat/ChatForm/ChatFormActions/ChatFormActionFileAttachments.svelte';
+export { default as ChatFormActionRecord } from './chat/ChatForm/ChatFormActions/ChatFormActionRecord.svelte';
+export { default as ChatFormActions } from './chat/ChatForm/ChatFormActions/ChatFormActions.svelte';
+export { default as ChatFormActionSubmit } from './chat/ChatForm/ChatFormActions/ChatFormActionSubmit.svelte';
+export { default as ChatFormFileInputInvisible } from './chat/ChatForm/ChatFormFileInputInvisible.svelte';
+export { default as ChatFormHelperText } from './chat/ChatForm/ChatFormHelperText.svelte';
+export { default as ChatFormTextarea } from './chat/ChatForm/ChatFormTextarea.svelte';
+
+export { default as ChatMessage } from './chat/ChatMessages/ChatMessage.svelte';
+export { default as ChatMessageActions } from './chat/ChatMessages/ChatMessageActions.svelte';
+export { default as ChatMessageBranchingControls } from './chat/ChatMessages/ChatMessageBranchingControls.svelte';
+export { default as ChatMessageStatistics } from './chat/ChatMessages/ChatMessageStatistics.svelte';
+export { default as ChatMessageSystem } from './chat/ChatMessages/ChatMessageSystem.svelte';
+export { default as ChatMessageThinkingBlock } from './chat/ChatMessages/ChatMessageThinkingBlock.svelte';
+export { default as ChatMessages } from './chat/ChatMessages/ChatMessages.svelte';
+export { default as MessageBranchingControls } from './chat/ChatMessages/ChatMessageBranchingControls.svelte';
+
+export { default as ChatScreen } from './chat/ChatScreen/ChatScreen.svelte';
+export { default as ChatScreenHeader } from './chat/ChatScreen/ChatScreenHeader.svelte';
+export { default as ChatScreenProcessingInfo } from './chat/ChatScreen/ChatScreenProcessingInfo.svelte';
+
+export { default as ChatSettings } from './chat/ChatSettings/ChatSettings.svelte';
+export { default as ChatSettingsFooter } from './chat/ChatSettings/ChatSettingsFooter.svelte';
+export { default as ChatSettingsFields } from './chat/ChatSettings/ChatSettingsFields.svelte';
+export { default as ChatSettingsImportExportTab } from './chat/ChatSettings/ChatSettingsImportExportTab.svelte';
+export { default as ChatSettingsParameterSourceIndicator } from './chat/ChatSettings/ChatSettingsParameterSourceIndicator.svelte';
+
+export { default as ChatSidebar } from './chat/ChatSidebar/ChatSidebar.svelte';
+export { default as ChatSidebarConversationItem } from './chat/ChatSidebar/ChatSidebarConversationItem.svelte';
+export { default as ChatSidebarSearch } from './chat/ChatSidebar/ChatSidebarSearch.svelte';
+
+// Dialogs
+
+export { default as DialogChatAttachmentPreview } from './dialogs/DialogChatAttachmentPreview.svelte';
+export { default as DialogChatAttachmentsViewAll } from './dialogs/DialogChatAttachmentsViewAll.svelte';
+export { default as DialogChatError } from './dialogs/DialogChatError.svelte';
+export { default as DialogChatSettings } from './dialogs/DialogChatSettings.svelte';
+export { default as DialogConfirmation } from './dialogs/DialogConfirmation.svelte';
+export { default as DialogConversationSelection } from './dialogs/DialogConversationSelection.svelte';
+export { default as DialogConversationTitleUpdate } from './dialogs/DialogConversationTitleUpdate.svelte';
+export { default as DialogEmptyFileAlert } from './dialogs/DialogEmptyFileAlert.svelte';
+export { default as DialogModelInformation } from './dialogs/DialogModelInformation.svelte';
+export { default as DialogModelNotAvailable } from './dialogs/DialogModelNotAvailable.svelte';
+
+// Miscellanous
+
+export { default as ActionButton } from './misc/ActionButton.svelte';
+export { default as ActionDropdown } from './misc/ActionDropdown.svelte';
+export { default as BadgeChatStatistic } from './misc/BadgeChatStatistic.svelte';
+export { default as BadgeInfo } from './misc/BadgeInfo.svelte';
+export { default as ModelBadge } from './models/ModelBadge.svelte';
+export { default as BadgeModality } from './misc/BadgeModality.svelte';
+export { default as ConversationSelection } from './misc/ConversationSelection.svelte';
+export { default as CopyToClipboardIcon } from './misc/CopyToClipboardIcon.svelte';
+export { default as KeyboardShortcutInfo } from './misc/KeyboardShortcutInfo.svelte';
+export { default as MarkdownContent } from './misc/MarkdownContent.svelte';
+export { default as RemoveButton } from './misc/RemoveButton.svelte';
+export { default as SearchInput } from './misc/SearchInput.svelte';
+export { default as SyntaxHighlightedCode } from './misc/SyntaxHighlightedCode.svelte';
+export { default as ModelsSelector } from './models/ModelsSelector.svelte';
+
+// Server
+
+export { default as ServerStatus } from './server/ServerStatus.svelte';
+export { default as ServerErrorSplash } from './server/ServerErrorSplash.svelte';
+export { default as ServerLoadingSplash } from './server/ServerLoadingSplash.svelte';

tools/server/webui/src/lib/components/app/misc/ActionButton.svelte

@@ -0,0 +1,47 @@
+<script lang="ts">
+	import { Button } from '$lib/components/ui/button';
+	import * as Tooltip from '$lib/components/ui/tooltip';
+	import type { Component } from 'svelte';
+
+	interface Props {
+		icon: Component;
+		tooltip: string;
+		variant?: 'default' | 'destructive' | 'outline' | 'secondary' | 'ghost' | 'link';
+		size?: 'default' | 'sm' | 'lg' | 'icon';
+		class?: string;
+		disabled?: boolean;
+		onclick: () => void;
+		'aria-label'?: string;
+	}
+
+	let {
+		icon,
+		tooltip,
+		variant = 'ghost',
+		size = 'sm',
+		class: className = '',
+		disabled = false,
+		onclick,
+		'aria-label': ariaLabel
+	}: Props = $props();
+</script>
+
+<Tooltip.Root>
+	<Tooltip.Trigger>
+		<Button
+			{variant}
+			{size}
+			{disabled}
+			{onclick}
+			class="h-6 w-6 p-0 {className} flex"
+			aria-label={ariaLabel || tooltip}
+		>
+			{@const IconComponent = icon}
+			<IconComponent class="h-3 w-3" />
+		</Button>
+	</Tooltip.Trigger>
+
+	<Tooltip.Content>
+		<p>{tooltip}</p>
+	</Tooltip.Content>
+</Tooltip.Root>

tools/server/webui/src/lib/components/app/misc/ActionDropdown.svelte

@@ -0,0 +1,86 @@
+<script lang="ts">
+	import * as DropdownMenu from '$lib/components/ui/dropdown-menu';
+	import * as Tooltip from '$lib/components/ui/tooltip';
+	import { KeyboardShortcutInfo } from '$lib/components/app';
+	import type { Component } from 'svelte';
+
+	interface ActionItem {
+		icon: Component;
+		label: string;
+		onclick: (event: Event) => void;
+		variant?: 'default' | 'destructive';
+		disabled?: boolean;
+		shortcut?: string[];
+		separator?: boolean;
+	}
+
+	interface Props {
+		triggerIcon: Component;
+		triggerTooltip?: string;
+		triggerClass?: string;
+		actions: ActionItem[];
+		align?: 'start' | 'center' | 'end';
+		open?: boolean;
+	}
+
+	let {
+		triggerIcon,
+		triggerTooltip,
+		triggerClass = '',
+		actions,
+		align = 'end',
+		open = $bindable(false)
+	}: Props = $props();
+</script>
+
+<DropdownMenu.Root bind:open>
+	<DropdownMenu.Trigger
+		class="flex h-6 w-6 cursor-pointer items-center justify-center rounded-md p-0 text-sm font-medium transition-colors hover:bg-accent hover:text-accent-foreground focus:bg-accent focus:text-accent-foreground focus:outline-none disabled:pointer-events-none disabled:opacity-50 data-[state=open]:bg-accent data-[state=open]:text-accent-foreground {triggerClass}"
+		onclick={(e) => e.stopPropagation()}
+	>
+		{#if triggerTooltip}
+			<Tooltip.Root>
+				<Tooltip.Trigger>
+					{@render iconComponent(triggerIcon, 'h-3 w-3')}
+					<span class="sr-only">{triggerTooltip}</span>
+				</Tooltip.Trigger>
+				<Tooltip.Content>
+					<p>{triggerTooltip}</p>
+				</Tooltip.Content>
+			</Tooltip.Root>
+		{:else}
+			{@render iconComponent(triggerIcon, 'h-3 w-3')}
+		{/if}
+	</DropdownMenu.Trigger>
+
+	<DropdownMenu.Content {align} class="z-[999999] w-48">
+		{#each actions as action, index (action.label)}
+			{#if action.separator && index > 0}
+				<DropdownMenu.Separator />
+			{/if}
+
+			<DropdownMenu.Item
+				onclick={action.onclick}
+				variant={action.variant}
+				disabled={action.disabled}
+				class="flex items-center justify-between hover:[&>kbd]:opacity-100"
+			>
+				<div class="flex items-center gap-2">
+					{@render iconComponent(
+						action.icon,
+						`h-4 w-4 ${action.variant === 'destructive' ? 'text-destructive' : ''}`
+					)}
+					{action.label}
+				</div>
+
+				{#if action.shortcut}
+					<KeyboardShortcutInfo keys={action.shortcut} variant={action.variant} />
+				{/if}
+			</DropdownMenu.Item>
+		{/each}
+	</DropdownMenu.Content>
+</DropdownMenu.Root>
+
+{#snippet iconComponent(IconComponent: Component, className: string)}
+	<IconComponent class={className} />
+{/snippet}

tools/server/webui/src/lib/components/app/misc/BadgeChatStatistic.svelte

@@ -0,0 +1,44 @@
+<script lang="ts">
+	import { BadgeInfo } from '$lib/components/app';
+	import * as Tooltip from '$lib/components/ui/tooltip';
+	import { copyToClipboard } from '$lib/utils';
+	import type { Component } from 'svelte';
+
+	interface Props {
+		class?: string;
+		icon: Component;
+		value: string | number;
+		tooltipLabel?: string;
+	}
+
+	let { class: className = '', icon: Icon, value, tooltipLabel }: Props = $props();
+
+	function handleClick() {
+		void copyToClipboard(String(value));
+	}
+</script>
+
+{#if tooltipLabel}
+	<Tooltip.Root>
+		<Tooltip.Trigger>
+			<BadgeInfo class={className} onclick={handleClick}>
+				{#snippet icon()}
+					<Icon class="h-3 w-3" />
+				{/snippet}
+
+				{value}
+			</BadgeInfo>
+		</Tooltip.Trigger>
+		<Tooltip.Content>
+			<p>{tooltipLabel}</p>
+		</Tooltip.Content>
+	</Tooltip.Root>
+{:else}
+	<BadgeInfo class={className} onclick={handleClick}>
+		{#snippet icon()}
+			<Icon class="h-3 w-3" />
+		{/snippet}
+
+		{value}
+	</BadgeInfo>
+{/if}

tools/server/webui/src/lib/components/app/misc/BadgeInfo.svelte

@@ -0,0 +1,27 @@
+<script lang="ts">
+	import { cn } from '$lib/components/ui/utils';
+	import type { Snippet } from 'svelte';
+
+	interface Props {
+		children: Snippet;
+		class?: string;
+		icon?: Snippet;
+		onclick?: () => void;
+	}
+
+	let { children, class: className = '', icon, onclick }: Props = $props();
+</script>
+
+<button
+	class={cn(
+		'inline-flex cursor-pointer items-center gap-1 rounded-sm bg-muted-foreground/15 px-1.5 py-0.75',
+		className
+	)}
+	{onclick}
+>
+	{#if icon}
+		{@render icon()}
+	{/if}
+
+	{@render children()}
+</button>

tools/server/webui/src/lib/components/app/misc/BadgeModality.svelte

@@ -0,0 +1,39 @@
+<script lang="ts">
+	import { ModelModality } from '$lib/enums';
+	import { MODALITY_ICONS, MODALITY_LABELS } from '$lib/constants/icons';
+	import { cn } from '$lib/components/ui/utils';
+
+	type DisplayableModality = ModelModality.VISION | ModelModality.AUDIO;
+
+	interface Props {
+		modalities: ModelModality[];
+		class?: string;
+	}
+
+	let { modalities, class: className = '' }: Props = $props();
+
+	// Filter to only modalities that have icons (VISION, AUDIO)
+	const displayableModalities = $derived(
+		modalities.filter(
+			(m): m is DisplayableModality => m === ModelModality.VISION || m === ModelModality.AUDIO
+		)
+	);
+</script>
+
+{#each displayableModalities as modality, index (index)}
+	{@const IconComponent = MODALITY_ICONS[modality]}
+	{@const label = MODALITY_LABELS[modality]}
+
+	<span
+		class={cn(
+			'inline-flex items-center gap-1 rounded-md bg-muted px-2 py-1 text-xs font-medium',
+			className
+		)}
+	>
+		{#if IconComponent}
+			<IconComponent class="h-3 w-3" />
+		{/if}
+
+		{label}
+	</span>
+{/each}

tools/server/webui/src/lib/components/app/misc/CodePreviewDialog.svelte

@@ -0,0 +1,93 @@
+<script lang="ts">
+	import { Dialog as DialogPrimitive } from 'bits-ui';
+	import XIcon from '@lucide/svelte/icons/x';
+
+	interface Props {
+		open: boolean;
+		code: string;
+		language: string;
+		onOpenChange?: (open: boolean) => void;
+	}
+
+	let { open = $bindable(), code, language, onOpenChange }: Props = $props();
+
+	let iframeRef = $state<HTMLIFrameElement | null>(null);
+
+	$effect(() => {
+		if (!iframeRef) return;
+
+		if (open) {
+			iframeRef.srcdoc = code;
+		} else {
+			iframeRef.srcdoc = '';
+		}
+	});
+
+	function handleOpenChange(nextOpen: boolean) {
+		open = nextOpen;
+		onOpenChange?.(nextOpen);
+	}
+</script>
+
+<DialogPrimitive.Root {open} onOpenChange={handleOpenChange}>
+	<DialogPrimitive.Portal>
+		<DialogPrimitive.Overlay class="code-preview-overlay" />
+
+		<DialogPrimitive.Content class="code-preview-content">
+			<iframe
+				bind:this={iframeRef}
+				title="Preview {language}"
+				sandbox="allow-scripts"
+				class="code-preview-iframe"
+			></iframe>
+
+			<DialogPrimitive.Close
+				class="code-preview-close absolute top-4 right-4 border-none bg-transparent text-white opacity-70 mix-blend-difference transition-opacity hover:opacity-100 focus-visible:ring-0 focus-visible:ring-offset-0 focus-visible:outline-none disabled:pointer-events-none [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-8"
+				aria-label="Close preview"
+			>
+				<XIcon />
+				<span class="sr-only">Close preview</span>
+			</DialogPrimitive.Close>
+		</DialogPrimitive.Content>
+	</DialogPrimitive.Portal>
+</DialogPrimitive.Root>
+
+<style lang="postcss">
+	:global(.code-preview-overlay) {
+		position: fixed;
+		inset: 0;
+		background-color: transparent;
+		z-index: 100000;
+	}
+
+	:global(.code-preview-content) {
+		position: fixed;
+		inset: 0;
+		top: 0 !important;
+		left: 0 !important;
+		width: 100dvw;
+		height: 100dvh;
+		margin: 0;
+		padding: 0;
+		border: none;
+		border-radius: 0;
+		background-color: transparent;
+		box-shadow: none;
+		display: block;
+		overflow: hidden;
+		transform: none !important;
+		z-index: 100001;
+	}
+
+	:global(.code-preview-iframe) {
+		display: block;
+		width: 100dvw;
+		height: 100dvh;
+		border: 0;
+	}
+
+	:global(.code-preview-close) {
+		position: absolute;
+		z-index: 100002;
+	}
+</style>

tools/server/webui/src/lib/components/app/misc/ConversationSelection.svelte

@@ -0,0 +1,205 @@
+<script lang="ts">
+	import { Search, X } from '@lucide/svelte';
+	import { Button } from '$lib/components/ui/button';
+	import { Input } from '$lib/components/ui/input';
+	import { Checkbox } from '$lib/components/ui/checkbox';
+	import { ScrollArea } from '$lib/components/ui/scroll-area';
+	import { SvelteSet } from 'svelte/reactivity';
+
+	interface Props {
+		conversations: DatabaseConversation[];
+		messageCountMap?: Map<string, number>;
+		mode: 'export' | 'import';
+		onCancel: () => void;
+		onConfirm: (selectedConversations: DatabaseConversation[]) => void;
+	}
+
+	let { conversations, messageCountMap = new Map(), mode, onCancel, onConfirm }: Props = $props();
+
+	let searchQuery = $state('');
+	let selectedIds = $state.raw<SvelteSet<string>>(new SvelteSet(conversations.map((c) => c.id)));
+	let lastClickedId = $state<string | null>(null);
+
+	let filteredConversations = $derived(
+		conversations.filter((conv) => {
+			const name = conv.name || 'Untitled conversation';
+			return name.toLowerCase().includes(searchQuery.toLowerCase());
+		})
+	);
+
+	let allSelected = $derived(
+		filteredConversations.length > 0 &&
+			filteredConversations.every((conv) => selectedIds.has(conv.id))
+	);
+
+	let someSelected = $derived(
+		filteredConversations.some((conv) => selectedIds.has(conv.id)) && !allSelected
+	);
+
+	function toggleConversation(id: string, shiftKey: boolean = false) {
+		const newSet = new SvelteSet(selectedIds);
+
+		if (shiftKey && lastClickedId !== null) {
+			const lastIndex = filteredConversations.findIndex((c) => c.id === lastClickedId);
+			const currentIndex = filteredConversations.findIndex((c) => c.id === id);
+
+			if (lastIndex !== -1 && currentIndex !== -1) {
+				const start = Math.min(lastIndex, currentIndex);
+				const end = Math.max(lastIndex, currentIndex);
+
+				const shouldSelect = !newSet.has(id);
+
+				for (let i = start; i <= end; i++) {
+					if (shouldSelect) {
+						newSet.add(filteredConversations[i].id);
+					} else {
+						newSet.delete(filteredConversations[i].id);
+					}
+				}
+
+				selectedIds = newSet;
+				return;
+			}
+		}
+
+		if (newSet.has(id)) {
+			newSet.delete(id);
+		} else {
+			newSet.add(id);
+		}
+
+		selectedIds = newSet;
+		lastClickedId = id;
+	}
+
+	function toggleAll() {
+		if (allSelected) {
+			const newSet = new SvelteSet(selectedIds);
+
+			filteredConversations.forEach((conv) => newSet.delete(conv.id));
+			selectedIds = newSet;
+		} else {
+			const newSet = new SvelteSet(selectedIds);
+
+			filteredConversations.forEach((conv) => newSet.add(conv.id));
+			selectedIds = newSet;
+		}
+	}
+
+	function handleConfirm() {
+		const selected = conversations.filter((conv) => selectedIds.has(conv.id));
+		onConfirm(selected);
+	}
+
+	function handleCancel() {
+		selectedIds = new SvelteSet(conversations.map((c) => c.id));
+		searchQuery = '';
+		lastClickedId = null;
+
+		onCancel();
+	}
+
+	export function reset() {
+		selectedIds = new SvelteSet(conversations.map((c) => c.id));
+		searchQuery = '';
+		lastClickedId = null;
+	}
+</script>
+
+<div class="space-y-4">
+	<div class="relative">
+		<Search class="absolute top-1/2 left-3 h-4 w-4 -translate-y-1/2 text-muted-foreground" />
+
+		<Input bind:value={searchQuery} placeholder="Search conversations..." class="pr-9 pl-9" />
+
+		{#if searchQuery}
+			<button
+				class="absolute top-1/2 right-3 -translate-y-1/2 text-muted-foreground hover:text-foreground"
+				onclick={() => (searchQuery = '')}
+				type="button"
+			>
+				<X class="h-4 w-4" />
+			</button>
+		{/if}
+	</div>
+
+	<div class="flex items-center justify-between text-sm text-muted-foreground">
+		<span>
+			{selectedIds.size} of {conversations.length} selected
+			{#if searchQuery}
+				({filteredConversations.length} shown)
+			{/if}
+		</span>
+	</div>
+
+	<div class="overflow-hidden rounded-md border">
+		<ScrollArea class="h-[400px]">
+			<table class="w-full">
+				<thead class="sticky top-0 z-10 bg-muted">
+					<tr class="border-b">
+						<th class="w-12 p-3 text-left">
+							<Checkbox
+								checked={allSelected}
+								indeterminate={someSelected}
+								onCheckedChange={toggleAll}
+							/>
+						</th>
+
+						<th class="p-3 text-left text-sm font-medium">Conversation Name</th>
+
+						<th class="w-32 p-3 text-left text-sm font-medium">Messages</th>
+					</tr>
+				</thead>
+				<tbody>
+					{#if filteredConversations.length === 0}
+						<tr>
+							<td colspan="3" class="p-8 text-center text-sm text-muted-foreground">
+								{#if searchQuery}
+									No conversations found matching "{searchQuery}"
+								{:else}
+									No conversations available
+								{/if}
+							</td>
+						</tr>
+					{:else}
+						{#each filteredConversations as conv (conv.id)}
+							<tr
+								class="cursor-pointer border-b transition-colors hover:bg-muted/50"
+								onclick={(e) => toggleConversation(conv.id, e.shiftKey)}
+							>
+								<td class="p-3">
+									<Checkbox
+										checked={selectedIds.has(conv.id)}
+										onclick={(e) => {
+											e.preventDefault();
+											e.stopPropagation();
+											toggleConversation(conv.id, e.shiftKey);
+										}}
+									/>
+								</td>
+
+								<td class="p-3 text-sm">
+									<div class="max-w-[17rem] truncate" title={conv.name || 'Untitled conversation'}>
+										{conv.name || 'Untitled conversation'}
+									</div>
+								</td>
+
+								<td class="p-3 text-sm text-muted-foreground">
+									{messageCountMap.get(conv.id) ?? 0}
+								</td>
+							</tr>
+						{/each}
+					{/if}
+				</tbody>
+			</table>
+		</ScrollArea>
+	</div>
+
+	<div class="flex justify-end gap-2">
+		<Button variant="outline" onclick={handleCancel}>Cancel</Button>
+
+		<Button onclick={handleConfirm} disabled={selectedIds.size === 0}>
+			{mode === 'export' ? 'Export' : 'Import'} ({selectedIds.size})
+		</Button>
+	</div>
+</div>

tools/server/webui/src/lib/components/app/misc/CopyToClipboardIcon.svelte

@@ -0,0 +1,18 @@
+<script lang="ts">
+	import { Copy } from '@lucide/svelte';
+	import { copyToClipboard } from '$lib/utils';
+
+	interface Props {
+		ariaLabel?: string;
+		canCopy?: boolean;
+		text: string;
+	}
+
+	let { ariaLabel = 'Copy to clipboard', canCopy = true, text }: Props = $props();
+</script>
+
+<Copy
+	class="h-3 w-3 flex-shrink-0 cursor-{canCopy ? 'pointer' : 'not-allowed'}"
+	aria-label={ariaLabel}
+	onclick={() => canCopy && copyToClipboard(text)}
+/>

tools/server/webui/src/lib/components/app/misc/KeyboardShortcutInfo.svelte

@@ -0,0 +1,31 @@
+<script lang="ts">
+	import { ArrowBigUp } from '@lucide/svelte';
+
+	interface Props {
+		keys: string[];
+		variant?: 'default' | 'destructive';
+		class?: string;
+	}
+
+	let { keys, variant = 'default', class: className = '' }: Props = $props();
+
+	let baseClasses =
+		'px-1 pointer-events-none inline-flex select-none items-center gap-0.5 font-sans text-md font-medium opacity-0 transition-opacity -my-1';
+	let variantClasses = variant === 'destructive' ? 'text-destructive' : 'text-muted-foreground';
+</script>
+
+<kbd class="{baseClasses} {variantClasses} {className}">
+	{#each keys as key, index (index)}
+		{#if key === 'shift'}
+			<ArrowBigUp class="h-1 w-1 {variant === 'destructive' ? 'text-destructive' : ''} -mr-1" />
+		{:else if key === 'cmd'}
+			<span class={variant === 'destructive' ? 'text-destructive' : ''}>⌘</span>
+		{:else}
+			{key.toUpperCase()}
+		{/if}
+
+		{#if index < keys.length - 1}
+			<span> </span>
+		{/if}
+	{/each}
+</kbd>

tools/server/webui/src/lib/components/app/misc/MarkdownContent.svelte

@@ -0,0 +1,870 @@
+<script lang="ts">
+	import { remark } from 'remark';
+	import remarkBreaks from 'remark-breaks';
+	import remarkGfm from 'remark-gfm';
+	import remarkMath from 'remark-math';
+	import rehypeHighlight from 'rehype-highlight';
+	import remarkRehype from 'remark-rehype';
+	import rehypeKatex from 'rehype-katex';
+	import rehypeStringify from 'rehype-stringify';
+	import type { Root as HastRoot, RootContent as HastRootContent } from 'hast';
+	import type { Root as MdastRoot } from 'mdast';
+	import { browser } from '$app/environment';
+	import { onDestroy, tick } from 'svelte';
+	import { rehypeRestoreTableHtml } from '$lib/markdown/table-html-restorer';
+	import { rehypeEnhanceLinks } from '$lib/markdown/enhance-links';
+	import { rehypeEnhanceCodeBlocks } from '$lib/markdown/enhance-code-blocks';
+	import { remarkLiteralHtml } from '$lib/markdown/literal-html';
+	import { copyCodeToClipboard, preprocessLaTeX } from '$lib/utils';
+	import '$styles/katex-custom.scss';
+	import githubDarkCss from 'highlight.js/styles/github-dark.css?inline';
+	import githubLightCss from 'highlight.js/styles/github.css?inline';
+	import { mode } from 'mode-watcher';
+	import CodePreviewDialog from './CodePreviewDialog.svelte';
+
+	interface Props {
+		content: string;
+		class?: string;
+	}
+
+	interface MarkdownBlock {
+		id: string;
+		html: string;
+	}
+
+	let { content, class: className = '' }: Props = $props();
+
+	let containerRef = $state<HTMLDivElement>();
+	let renderedBlocks = $state<MarkdownBlock[]>([]);
+	let unstableBlockHtml = $state('');
+	let previewDialogOpen = $state(false);
+	let previewCode = $state('');
+	let previewLanguage = $state('text');
+
+	let pendingMarkdown: string | null = null;
+	let isProcessing = false;
+
+	const themeStyleId = `highlight-theme-${(window.idxThemeStyle = (window.idxThemeStyle ?? 0) + 1)}`;
+
+	let processor = $derived(() => {
+		return remark()
+			.use(remarkGfm) // GitHub Flavored Markdown
+			.use(remarkMath) // Parse $inline$ and $$block$$ math
+			.use(remarkBreaks) // Convert line breaks to <br>
+			.use(remarkLiteralHtml) // Treat raw HTML as literal text with preserved indentation
+			.use(remarkRehype) // Convert Markdown AST to rehype
+			.use(rehypeKatex) // Render math using KaTeX
+			.use(rehypeHighlight) // Add syntax highlighting
+			.use(rehypeRestoreTableHtml) // Restore limited HTML (e.g., <br>, <ul>) inside Markdown tables
+			.use(rehypeEnhanceLinks) // Add target="_blank" to links
+			.use(rehypeEnhanceCodeBlocks) // Wrap code blocks with header and actions
+			.use(rehypeStringify, { allowDangerousHtml: true }); // Convert to HTML string
+	});
+
+	/**
+	 * Removes click event listeners from copy and preview buttons.
+	 * Called on component destroy.
+	 */
+	function cleanupEventListeners() {
+		if (!containerRef) return;
+
+		const copyButtons = containerRef.querySelectorAll<HTMLButtonElement>('.copy-code-btn');
+		const previewButtons = containerRef.querySelectorAll<HTMLButtonElement>('.preview-code-btn');
+
+		for (const button of copyButtons) {
+			button.removeEventListener('click', handleCopyClick);
+		}
+
+		for (const button of previewButtons) {
+			button.removeEventListener('click', handlePreviewClick);
+		}
+	}
+
+	/**
+	 * Removes this component's highlight.js theme style from the document head.
+	 * Called on component destroy to clean up injected styles.
+	 */
+	function cleanupHighlightTheme() {
+		if (!browser) return;
+
+		const existingTheme = document.getElementById(themeStyleId);
+		existingTheme?.remove();
+	}
+
+	/**
+	 * Loads the appropriate highlight.js theme based on dark/light mode.
+	 * Injects a scoped style element into the document head.
+	 * @param isDark - Whether to load the dark theme (true) or light theme (false)
+	 */
+	function loadHighlightTheme(isDark: boolean) {
+		if (!browser) return;
+
+		const existingTheme = document.getElementById(themeStyleId);
+		existingTheme?.remove();
+
+		const style = document.createElement('style');
+		style.id = themeStyleId;
+		style.textContent = isDark ? githubDarkCss : githubLightCss;
+
+		document.head.appendChild(style);
+	}
+
+	/**
+	 * Extracts code information from a button click target within a code block.
+	 * @param target - The clicked button element
+	 * @returns Object with rawCode and language, or null if extraction fails
+	 */
+	function getCodeInfoFromTarget(target: HTMLElement) {
+		const wrapper = target.closest('.code-block-wrapper');
+
+		if (!wrapper) {
+			console.error('No wrapper found');
+			return null;
+		}
+
+		const codeElement = wrapper.querySelector<HTMLElement>('code[data-code-id]');
+
+		if (!codeElement) {
+			console.error('No code element found in wrapper');
+			return null;
+		}
+
+		const rawCode = codeElement.textContent ?? '';
+
+		const languageLabel = wrapper.querySelector<HTMLElement>('.code-language');
+		const language = languageLabel?.textContent?.trim() || 'text';
+
+		return { rawCode, language };
+	}
+
+	/**
+	 * Generates a unique identifier for a HAST node based on its position.
+	 * Used for stable block identification during incremental rendering.
+	 * @param node - The HAST root content node
+	 * @param indexFallback - Fallback index if position is unavailable
+	 * @returns Unique string identifier for the node
+	 */
+	function getHastNodeId(node: HastRootContent, indexFallback: number): string {
+		const position = node.position;
+
+		if (position?.start?.offset != null && position?.end?.offset != null) {
+			return `hast-${position.start.offset}-${position.end.offset}`;
+		}
+
+		return `${node.type}-${indexFallback}`;
+	}
+
+	/**
+	 * Handles click events on copy buttons within code blocks.
+	 * Copies the raw code content to the clipboard.
+	 * @param event - The click event from the copy button
+	 */
+	async function handleCopyClick(event: Event) {
+		event.preventDefault();
+		event.stopPropagation();
+
+		const target = event.currentTarget as HTMLButtonElement | null;
+
+		if (!target) {
+			return;
+		}
+
+		const info = getCodeInfoFromTarget(target);
+
+		if (!info) {
+			return;
+		}
+
+		try {
+			await copyCodeToClipboard(info.rawCode);
+		} catch (error) {
+			console.error('Failed to copy code:', error);
+		}
+	}
+
+	/**
+	 * Handles preview dialog open state changes.
+	 * Clears preview content when dialog is closed.
+	 * @param open - Whether the dialog is being opened or closed
+	 */
+	function handlePreviewDialogOpenChange(open: boolean) {
+		previewDialogOpen = open;
+
+		if (!open) {
+			previewCode = '';
+			previewLanguage = 'text';
+		}
+	}
+
+	/**
+	 * Handles click events on preview buttons within HTML code blocks.
+	 * Opens a preview dialog with the rendered HTML content.
+	 * @param event - The click event from the preview button
+	 */
+	function handlePreviewClick(event: Event) {
+		event.preventDefault();
+		event.stopPropagation();
+
+		const target = event.currentTarget as HTMLButtonElement | null;
+
+		if (!target) {
+			return;
+		}
+
+		const info = getCodeInfoFromTarget(target);
+
+		if (!info) {
+			return;
+		}
+
+		previewCode = info.rawCode;
+		previewLanguage = info.language;
+		previewDialogOpen = true;
+	}
+
+	/**
+	 * Processes markdown content into stable and unstable HTML blocks.
+	 * Uses incremental rendering: stable blocks are cached, unstable block is re-rendered.
+	 * @param markdown - The raw markdown string to process
+	 */
+	async function processMarkdown(markdown: string) {
+		if (!markdown) {
+			renderedBlocks = [];
+			unstableBlockHtml = '';
+			return;
+		}
+
+		const normalized = preprocessLaTeX(markdown);
+		const processorInstance = processor();
+		const ast = processorInstance.parse(normalized) as MdastRoot;
+		const processedRoot = (await processorInstance.run(ast)) as HastRoot;
+		const processedChildren = processedRoot.children ?? [];
+		const stableCount = Math.max(processedChildren.length - 1, 0);
+		const nextBlocks: MarkdownBlock[] = [];
+
+		for (let index = 0; index < stableCount; index++) {
+			const hastChild = processedChildren[index];
+			const id = getHastNodeId(hastChild, index);
+			const existing = renderedBlocks[index];
+
+			if (existing && existing.id === id) {
+				nextBlocks.push(existing);
+				continue;
+			}
+
+			const html = stringifyProcessedNode(
+				processorInstance,
+				processedRoot,
+				processedChildren[index]
+			);
+
+			nextBlocks.push({ id, html });
+		}
+
+		let unstableHtml = '';
+
+		if (processedChildren.length > stableCount) {
+			const unstableChild = processedChildren[stableCount];
+			unstableHtml = stringifyProcessedNode(processorInstance, processedRoot, unstableChild);
+		}
+
+		renderedBlocks = nextBlocks;
+		await tick(); // Force DOM sync before updating unstable HTML block
+		unstableBlockHtml = unstableHtml;
+	}
+
+	/**
+	 * Attaches click event listeners to copy and preview buttons in code blocks.
+	 * Uses data-listener-bound attribute to prevent duplicate bindings.
+	 */
+	function setupCodeBlockActions() {
+		if (!containerRef) return;
+
+		const wrappers = containerRef.querySelectorAll<HTMLElement>('.code-block-wrapper');
+
+		for (const wrapper of wrappers) {
+			const copyButton = wrapper.querySelector<HTMLButtonElement>('.copy-code-btn');
+			const previewButton = wrapper.querySelector<HTMLButtonElement>('.preview-code-btn');
+
+			if (copyButton && copyButton.dataset.listenerBound !== 'true') {
+				copyButton.dataset.listenerBound = 'true';
+				copyButton.addEventListener('click', handleCopyClick);
+			}
+
+			if (previewButton && previewButton.dataset.listenerBound !== 'true') {
+				previewButton.dataset.listenerBound = 'true';
+				previewButton.addEventListener('click', handlePreviewClick);
+			}
+		}
+	}
+
+	/**
+	 * Converts a single HAST node to an enhanced HTML string.
+	 * Applies link and code block enhancements to the output.
+	 * @param processorInstance - The remark/rehype processor instance
+	 * @param processedRoot - The full processed HAST root (for context)
+	 * @param child - The specific HAST child node to stringify
+	 * @returns Enhanced HTML string representation of the node
+	 */
+	function stringifyProcessedNode(
+		processorInstance: ReturnType<typeof processor>,
+		processedRoot: HastRoot,
+		child: unknown
+	) {
+		const root: HastRoot = {
+			...(processedRoot as HastRoot),
+			children: [child as never]
+		};
+
+		return processorInstance.stringify(root);
+	}
+
+	/**
+	 * Queues markdown for processing with coalescing support.
+	 * Only processes the latest markdown when multiple updates arrive quickly.
+	 * @param markdown - The markdown content to render
+	 */
+	async function updateRenderedBlocks(markdown: string) {
+		pendingMarkdown = markdown;
+
+		if (isProcessing) {
+			return;
+		}
+
+		isProcessing = true;
+
+		try {
+			while (pendingMarkdown !== null) {
+				const nextMarkdown = pendingMarkdown;
+				pendingMarkdown = null;
+
+				await processMarkdown(nextMarkdown);
+			}
+		} catch (error) {
+			console.error('Failed to process markdown:', error);
+			renderedBlocks = [];
+			unstableBlockHtml = markdown.replace(/\n/g, '<br>');
+		} finally {
+			isProcessing = false;
+		}
+	}
+
+	$effect(() => {
+		const currentMode = mode.current;
+		const isDark = currentMode === 'dark';
+
+		loadHighlightTheme(isDark);
+	});
+
+	$effect(() => {
+		updateRenderedBlocks(content);
+	});
+
+	$effect(() => {
+		const hasRenderedBlocks = renderedBlocks.length > 0;
+		const hasUnstableBlock = Boolean(unstableBlockHtml);
+
+		if ((hasRenderedBlocks || hasUnstableBlock) && containerRef) {
+			setupCodeBlockActions();
+		}
+	});
+
+	onDestroy(() => {
+		cleanupEventListeners();
+		cleanupHighlightTheme();
+	});
+</script>
+
+<div bind:this={containerRef} class={className}>
+	{#each renderedBlocks as block (block.id)}
+		<div class="markdown-block" data-block-id={block.id}>
+			<!-- eslint-disable-next-line no-at-html-tags -->
+			{@html block.html}
+		</div>
+	{/each}
+
+	{#if unstableBlockHtml}
+		<div class="markdown-block markdown-block--unstable" data-block-id="unstable">
+			<!-- eslint-disable-next-line no-at-html-tags -->
+			{@html unstableBlockHtml}
+		</div>
+	{/if}
+</div>
+
+<CodePreviewDialog
+	open={previewDialogOpen}
+	code={previewCode}
+	language={previewLanguage}
+	onOpenChange={handlePreviewDialogOpenChange}
+/>
+
+<style>
+	.markdown-block,
+	.markdown-block--unstable {
+		display: contents;
+	}
+
+	/* Base typography styles */
+	div :global(p:not(:last-child)) {
+		margin-bottom: 1rem;
+		line-height: 1.75;
+	}
+
+	div :global(:is(h1, h2, h3, h4, h5, h6):first-child) {
+		margin-top: 0;
+	}
+
+	/* Headers with consistent spacing */
+	div :global(h1) {
+		font-size: 1.875rem;
+		font-weight: 700;
+		line-height: 1.2;
+		margin: 1.5rem 0 0.75rem 0;
+	}
+
+	div :global(h2) {
+		font-size: 1.5rem;
+		font-weight: 600;
+		line-height: 1.3;
+		margin: 1.25rem 0 0.5rem 0;
+	}
+
+	div :global(h3) {
+		font-size: 1.25rem;
+		font-weight: 600;
+		margin: 1.5rem 0 0.5rem 0;
+		line-height: 1.4;
+	}
+
+	div :global(h4) {
+		font-size: 1.125rem;
+		font-weight: 600;
+		margin: 0.75rem 0 0.25rem 0;
+	}
+
+	div :global(h5) {
+		font-size: 1rem;
+		font-weight: 600;
+		margin: 0.5rem 0 0.25rem 0;
+	}
+
+	div :global(h6) {
+		font-size: 0.875rem;
+		font-weight: 600;
+		margin: 0.5rem 0 0.25rem 0;
+	}
+
+	/* Text formatting */
+	div :global(strong) {
+		font-weight: 600;
+	}
+
+	div :global(em) {
+		font-style: italic;
+	}
+
+	div :global(del) {
+		text-decoration: line-through;
+		opacity: 0.7;
+	}
+
+	/* Inline code */
+	div :global(code:not(pre code)) {
+		background: var(--muted);
+		color: var(--muted-foreground);
+		padding: 0.125rem 0.375rem;
+		border-radius: 0.375rem;
+		font-size: 0.875rem;
+		font-family:
+			ui-monospace, SFMono-Regular, 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas,
+			'Liberation Mono', Menlo, monospace;
+	}
+
+	/* Links */
+	div :global(a) {
+		color: var(--primary);
+		text-decoration: underline;
+		text-underline-offset: 2px;
+		transition: color 0.2s ease;
+	}
+
+	div :global(a:hover) {
+		color: var(--primary);
+	}
+
+	/* Lists */
+	div :global(ul) {
+		list-style-type: disc;
+		margin-left: 1.5rem;
+		margin-bottom: 1rem;
+	}
+
+	div :global(ol) {
+		list-style-type: decimal;
+		margin-left: 1.5rem;
+		margin-bottom: 1rem;
+	}
+
+	div :global(li) {
+		margin-bottom: 0.25rem;
+		padding-left: 0.5rem;
+	}
+
+	div :global(li::marker) {
+		color: var(--muted-foreground);
+	}
+
+	/* Nested lists */
+	div :global(ul ul) {
+		list-style-type: circle;
+		margin-top: 0.25rem;
+		margin-bottom: 0.25rem;
+	}
+
+	div :global(ol ol) {
+		list-style-type: lower-alpha;
+		margin-top: 0.25rem;
+		margin-bottom: 0.25rem;
+	}
+
+	/* Task lists */
+	div :global(.task-list-item) {
+		list-style: none;
+		margin-left: 0;
+		padding-left: 0;
+	}
+
+	div :global(.task-list-item-checkbox) {
+		margin-right: 0.5rem;
+		margin-top: 0.125rem;
+	}
+
+	/* Blockquotes */
+	div :global(blockquote) {
+		border-left: 4px solid var(--border);
+		padding: 0.5rem 1rem;
+		margin: 1.5rem 0;
+		font-style: italic;
+		color: var(--muted-foreground);
+		background: var(--muted);
+		border-radius: 0 0.375rem 0.375rem 0;
+	}
+
+	/* Tables */
+	div :global(table) {
+		width: 100%;
+		margin: 1.5rem 0;
+		border-collapse: collapse;
+		border: 1px solid var(--border);
+		border-radius: 0.375rem;
+		overflow: hidden;
+	}
+
+	div :global(th) {
+		background: hsl(var(--muted) / 0.3);
+		border: 1px solid var(--border);
+		padding: 0.5rem 0.75rem;
+		text-align: left;
+		font-weight: 600;
+	}
+
+	div :global(td) {
+		border: 1px solid var(--border);
+		padding: 0.5rem 0.75rem;
+	}
+
+	div :global(tr:nth-child(even)) {
+		background: hsl(var(--muted) / 0.1);
+	}
+
+	/* User message markdown should keep table borders visible on light primary backgrounds */
+	div.markdown-user-content :global(table),
+	div.markdown-user-content :global(th),
+	div.markdown-user-content :global(td),
+	div.markdown-user-content :global(.table-wrapper) {
+		border-color: currentColor;
+	}
+
+	/* Horizontal rules */
+	div :global(hr) {
+		border: none;
+		border-top: 1px solid var(--border);
+		margin: 1.5rem 0;
+	}
+
+	/* Images */
+	div :global(img) {
+		border-radius: 0.5rem;
+		box-shadow:
+			0 1px 3px 0 rgb(0 0 0 / 0.1),
+			0 1px 2px -1px rgb(0 0 0 / 0.1);
+		margin: 1.5rem 0;
+		max-width: 100%;
+		height: auto;
+	}
+
+	/* Code blocks */
+
+	div :global(.code-block-wrapper) {
+		margin: 1.5rem 0;
+		border-radius: 0.75rem;
+		overflow: hidden;
+		border: 1px solid var(--border);
+		background: var(--code-background);
+	}
+
+	div :global(.code-block-header) {
+		display: flex;
+		justify-content: space-between;
+		align-items: center;
+		padding: 0.5rem 1rem;
+		background: hsl(var(--muted) / 0.5);
+		border-bottom: 1px solid var(--border);
+		font-size: 0.875rem;
+	}
+
+	div :global(.code-language) {
+		color: var(--code-foreground);
+		font-weight: 500;
+		font-family:
+			ui-monospace, SFMono-Regular, 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas,
+			'Liberation Mono', Menlo, monospace;
+		text-transform: uppercase;
+		font-size: 0.75rem;
+		letter-spacing: 0.05em;
+	}
+
+	div :global(.code-block-actions) {
+		display: flex;
+		align-items: center;
+		gap: 0.5rem;
+	}
+
+	div :global(.copy-code-btn),
+	div :global(.preview-code-btn) {
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		padding: 0;
+		background: transparent;
+		color: var(--code-foreground);
+		cursor: pointer;
+		transition: all 0.2s ease;
+	}
+
+	div :global(.copy-code-btn:hover),
+	div :global(.preview-code-btn:hover) {
+		transform: scale(1.05);
+	}
+
+	div :global(.copy-code-btn:active),
+	div :global(.preview-code-btn:active) {
+		transform: scale(0.95);
+	}
+
+	div :global(.code-block-wrapper pre) {
+		background: transparent;
+		padding: 1rem;
+		margin: 0;
+		overflow-x: auto;
+		border-radius: 0;
+		border: none;
+		font-size: 0.875rem;
+		line-height: 1.5;
+	}
+
+	div :global(pre) {
+		background: var(--muted);
+		margin: 1.5rem 0;
+		overflow-x: auto;
+		border-radius: 1rem;
+		border: none;
+	}
+
+	div :global(code) {
+		background: transparent;
+		color: var(--code-foreground);
+	}
+
+	/* Mentions and hashtags */
+	div :global(.mention) {
+		color: hsl(var(--primary));
+		font-weight: 500;
+		text-decoration: none;
+	}
+
+	div :global(.mention:hover) {
+		text-decoration: underline;
+	}
+
+	div :global(.hashtag) {
+		color: hsl(var(--primary));
+		font-weight: 500;
+		text-decoration: none;
+	}
+
+	div :global(.hashtag:hover) {
+		text-decoration: underline;
+	}
+
+	/* Advanced table enhancements */
+	div :global(table) {
+		transition: all 0.2s ease;
+	}
+
+	div :global(table:hover) {
+		box-shadow:
+			0 4px 6px -1px rgb(0 0 0 / 0.1),
+			0 2px 4px -2px rgb(0 0 0 / 0.1);
+	}
+
+	div :global(th:hover),
+	div :global(td:hover) {
+		background: var(--muted);
+	}
+
+	/* Disable hover effects when rendering user messages */
+	.markdown-user-content :global(a),
+	.markdown-user-content :global(a:hover) {
+		color: var(--primary-foreground);
+	}
+
+	.markdown-user-content :global(table:hover) {
+		box-shadow: none;
+	}
+
+	.markdown-user-content :global(th:hover),
+	.markdown-user-content :global(td:hover) {
+		background: inherit;
+	}
+
+	/* Enhanced blockquotes */
+	div :global(blockquote) {
+		transition: all 0.2s ease;
+		position: relative;
+	}
+
+	div :global(blockquote:hover) {
+		border-left-width: 6px;
+		background: var(--muted);
+		transform: translateX(2px);
+	}
+
+	div :global(blockquote::before) {
+		content: '"';
+		position: absolute;
+		top: -0.5rem;
+		left: 0.5rem;
+		font-size: 3rem;
+		color: var(--muted-foreground);
+		font-family: serif;
+		line-height: 1;
+	}
+
+	/* Enhanced images */
+	div :global(img) {
+		transition: all 0.3s ease;
+		cursor: pointer;
+	}
+
+	div :global(img:hover) {
+		transform: scale(1.02);
+		box-shadow:
+			0 10px 15px -3px rgb(0 0 0 / 0.1),
+			0 4px 6px -4px rgb(0 0 0 / 0.1);
+	}
+
+	/* Image zoom overlay */
+	div :global(.image-zoom-overlay) {
+		position: fixed;
+		top: 0;
+		left: 0;
+		right: 0;
+		bottom: 0;
+		background: rgba(0, 0, 0, 0.8);
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		z-index: 1000;
+		cursor: pointer;
+	}
+
+	div :global(.image-zoom-overlay img) {
+		max-width: 90vw;
+		max-height: 90vh;
+		border-radius: 0.5rem;
+		box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25);
+	}
+
+	/* Enhanced horizontal rules */
+	div :global(hr) {
+		border: none;
+		height: 2px;
+		background: linear-gradient(to right, transparent, var(--border), transparent);
+		margin: 2rem 0;
+		position: relative;
+	}
+
+	div :global(hr::after) {
+		content: '';
+		position: absolute;
+		top: 50%;
+		left: 50%;
+		transform: translate(-50%, -50%);
+		width: 1rem;
+		height: 1rem;
+		background: var(--border);
+		border-radius: 50%;
+	}
+
+	/* Scrollable tables */
+	div :global(.table-wrapper) {
+		overflow-x: auto;
+		margin: 1.5rem 0;
+		border-radius: 0.5rem;
+		border: 1px solid var(--border);
+	}
+
+	div :global(.table-wrapper table) {
+		margin: 0;
+		border: none;
+	}
+
+	/* Responsive adjustments */
+	@media (max-width: 640px) {
+		div :global(h1) {
+			font-size: 1.5rem;
+		}
+
+		div :global(h2) {
+			font-size: 1.25rem;
+		}
+
+		div :global(h3) {
+			font-size: 1.125rem;
+		}
+
+		div :global(table) {
+			font-size: 0.875rem;
+		}
+
+		div :global(th),
+		div :global(td) {
+			padding: 0.375rem 0.5rem;
+		}
+
+		div :global(.table-wrapper) {
+			margin: 0.5rem -1rem;
+			border-radius: 0;
+			border-left: none;
+			border-right: none;
+		}
+	}
+
+	/* Dark mode adjustments */
+	@media (prefers-color-scheme: dark) {
+		div :global(blockquote:hover) {
+			background: var(--muted);
+		}
+	}
+</style>

tools/server/webui/src/lib/components/app/misc/RemoveButton.svelte

@@ -0,0 +1,26 @@
+<script lang="ts">
+	import { X } from '@lucide/svelte';
+	import { Button } from '$lib/components/ui/button';
+
+	interface Props {
+		id: string;
+		onRemove?: (id: string) => void;
+		class?: string;
+	}
+
+	let { id, onRemove, class: className = '' }: Props = $props();
+</script>
+
+<Button
+	type="button"
+	variant="ghost"
+	size="sm"
+	class="h-6 w-6 bg-white/20 p-0 hover:bg-white/30 {className}"
+	onclick={(e) => {
+		e.stopPropagation();
+		onRemove?.(id);
+	}}
+	aria-label="Remove file"
+>
+	<X class="h-3 w-3" />
+</Button>

tools/server/webui/src/lib/components/app/misc/SearchInput.svelte

@@ -0,0 +1,73 @@
+<script lang="ts">
+	import { Input } from '$lib/components/ui/input';
+	import { Search, X } from '@lucide/svelte';
+
+	interface Props {
+		value?: string;
+		placeholder?: string;
+		onInput?: (value: string) => void;
+		onClose?: () => void;
+		onKeyDown?: (event: KeyboardEvent) => void;
+		class?: string;
+		id?: string;
+		ref?: HTMLInputElement | null;
+	}
+
+	let {
+		value = $bindable(''),
+		placeholder = 'Search...',
+		onInput,
+		onClose,
+		onKeyDown,
+		class: className,
+		id,
+		ref = $bindable(null)
+	}: Props = $props();
+
+	let showClearButton = $derived(!!value || !!onClose);
+
+	function handleInput(event: Event) {
+		const target = event.target as HTMLInputElement;
+
+		value = target.value;
+		onInput?.(target.value);
+	}
+
+	function handleClear() {
+		if (value) {
+			value = '';
+			onInput?.('');
+			ref?.focus();
+		} else {
+			onClose?.();
+		}
+	}
+</script>
+
+<div class="relative {className}">
+	<Search
+		class="absolute top-1/2 left-3 h-4 w-4 -translate-y-1/2 transform text-muted-foreground"
+	/>
+
+	<Input
+		{id}
+		bind:value
+		bind:ref
+		class="pl-9 {showClearButton ? 'pr-9' : ''}"
+		oninput={handleInput}
+		onkeydown={onKeyDown}
+		{placeholder}
+		type="search"
+	/>
+
+	{#if showClearButton}
+		<button
+			type="button"
+			class="absolute top-1/2 right-3 -translate-y-1/2 transform text-muted-foreground transition-colors hover:text-foreground"
+			onclick={handleClear}
+			aria-label={value ? 'Clear search' : 'Close'}
+		>
+			<X class="h-4 w-4" />
+		</button>
+	{/if}
+</div>

tools/server/webui/src/lib/components/app/misc/SyntaxHighlightedCode.svelte

@@ -0,0 +1,97 @@
+<script lang="ts">
+	import hljs from 'highlight.js';
+	import { browser } from '$app/environment';
+	import { mode } from 'mode-watcher';
+
+	import githubDarkCss from 'highlight.js/styles/github-dark.css?inline';
+	import githubLightCss from 'highlight.js/styles/github.css?inline';
+
+	interface Props {
+		code: string;
+		language?: string;
+		class?: string;
+		maxHeight?: string;
+		maxWidth?: string;
+	}
+
+	let {
+		code,
+		language = 'text',
+		class: className = '',
+		maxHeight = '60vh',
+		maxWidth = ''
+	}: Props = $props();
+
+	let highlightedHtml = $state('');
+
+	function loadHighlightTheme(isDark: boolean) {
+		if (!browser) return;
+
+		const existingThemes = document.querySelectorAll('style[data-highlight-theme-preview]');
+		existingThemes.forEach((style) => style.remove());
+
+		const style = document.createElement('style');
+		style.setAttribute('data-highlight-theme-preview', 'true');
+		style.textContent = isDark ? githubDarkCss : githubLightCss;
+
+		document.head.appendChild(style);
+	}
+
+	$effect(() => {
+		const currentMode = mode.current;
+		const isDark = currentMode === 'dark';
+
+		loadHighlightTheme(isDark);
+	});
+
+	$effect(() => {
+		if (!code) {
+			highlightedHtml = '';
+			return;
+		}
+
+		try {
+			// Check if the language is supported
+			const lang = language.toLowerCase();
+			const isSupported = hljs.getLanguage(lang);
+
+			if (isSupported) {
+				const result = hljs.highlight(code, { language: lang });
+				highlightedHtml = result.value;
+			} else {
+				// Try auto-detection or fallback to plain text
+				const result = hljs.highlightAuto(code);
+				highlightedHtml = result.value;
+			}
+		} catch {
+			// Fallback to escaped plain text
+			highlightedHtml = code.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
+		}
+	});
+</script>
+
+<div
+	class="code-preview-wrapper overflow-auto rounded-lg border border-border bg-muted {className}"
+	style="max-height: {maxHeight}; max-width: {maxWidth};"
+>
+	<!-- Needs to be formatted as single line for proper rendering -->
+	<pre class="m-0 overflow-x-auto p-4"><code class="hljs text-sm leading-relaxed"
+			>{@html highlightedHtml}</code
+		></pre>
+</div>
+
+<style>
+	.code-preview-wrapper {
+		font-family:
+			ui-monospace, SFMono-Regular, 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas,
+			'Liberation Mono', Menlo, monospace;
+	}
+
+	.code-preview-wrapper pre {
+		background: transparent;
+	}
+
+	.code-preview-wrapper code {
+		background: transparent;
+	}
+</style>

tools/server/webui/src/lib/components/app/models/ModelBadge.svelte

@@ -0,0 +1,56 @@
+<script lang="ts">
+	import { Package } from '@lucide/svelte';
+	import { BadgeInfo, CopyToClipboardIcon } from '$lib/components/app';
+	import { modelsStore } from '$lib/stores/models.svelte';
+	import { serverStore } from '$lib/stores/server.svelte';
+	import * as Tooltip from '$lib/components/ui/tooltip';
+
+	interface Props {
+		class?: string;
+		model?: string;
+		onclick?: () => void;
+		showCopyIcon?: boolean;
+		showTooltip?: boolean;
+	}
+
+	let {
+		class: className = '',
+		model: modelProp,
+		onclick,
+		showCopyIcon = false,
+		showTooltip = false
+	}: Props = $props();
+
+	let model = $derived(modelProp || modelsStore.singleModelName);
+	let isModelMode = $derived(serverStore.isModelMode);
+</script>
+
+{#snippet badgeContent()}
+	<BadgeInfo class={className} {onclick}>
+		{#snippet icon()}
+			<Package class="h-3 w-3" />
+		{/snippet}
+
+		{model}
+
+		{#if showCopyIcon}
+			<CopyToClipboardIcon text={model || ''} ariaLabel="Copy model name" />
+		{/if}
+	</BadgeInfo>
+{/snippet}
+
+{#if model && isModelMode}
+	{#if showTooltip}
+		<Tooltip.Root>
+			<Tooltip.Trigger>
+				{@render badgeContent()}
+			</Tooltip.Trigger>
+
+			<Tooltip.Content>
+				{onclick ? 'Click for model details' : model}
+			</Tooltip.Content>
+		</Tooltip.Root>
+	{:else}
+		{@render badgeContent()}
+	{/if}
+{/if}

tools/server/webui/src/lib/components/app/models/ModelsSelector.svelte

@@ -0,0 +1,555 @@
+<script lang="ts">
+	import { onMount, tick } from 'svelte';
+	import { ChevronDown, EyeOff, Loader2, MicOff, Package, Power } from '@lucide/svelte';
+	import * as Tooltip from '$lib/components/ui/tooltip';
+	import * as Popover from '$lib/components/ui/popover';
+	import { cn } from '$lib/components/ui/utils';
+	import {
+		modelsStore,
+		modelOptions,
+		modelsLoading,
+		modelsUpdating,
+		selectedModelId,
+		routerModels,
+		propsCacheVersion,
+		singleModelName
+	} from '$lib/stores/models.svelte';
+	import { usedModalities, conversationsStore } from '$lib/stores/conversations.svelte';
+	import { ServerModelStatus } from '$lib/enums';
+	import { isRouterMode } from '$lib/stores/server.svelte';
+	import { DialogModelInformation, SearchInput } from '$lib/components/app';
+	import type { ModelOption } from '$lib/types/models';
+
+	interface Props {
+		class?: string;
+		currentModel?: string | null;
+		/** Callback when model changes. Return false to keep menu open (e.g., for validation failures) */
+		onModelChange?: (modelId: string, modelName: string) => Promise<boolean> | boolean | void;
+		disabled?: boolean;
+		forceForegroundText?: boolean;
+		/** When true, user's global selection takes priority over currentModel (for form selector) */
+		useGlobalSelection?: boolean;
+		/**
+		 * When provided, only consider modalities from messages BEFORE this message.
+		 * Used for regeneration - allows selecting models that don't support modalities
+		 * used in later messages.
+		 */
+		upToMessageId?: string;
+	}
+
+	let {
+		class: className = '',
+		currentModel = null,
+		onModelChange,
+		disabled = false,
+		forceForegroundText = false,
+		useGlobalSelection = false,
+		upToMessageId
+	}: Props = $props();
+
+	let options = $derived(modelOptions());
+	let loading = $derived(modelsLoading());
+	let updating = $derived(modelsUpdating());
+	let activeId = $derived(selectedModelId());
+	let isRouter = $derived(isRouterMode());
+	let serverModel = $derived(singleModelName());
+
+	// Reactive router models state - needed for proper reactivity of status checks
+	let currentRouterModels = $derived(routerModels());
+
+	let requiredModalities = $derived(
+		upToMessageId ? conversationsStore.getModalitiesUpToMessage(upToMessageId) : usedModalities()
+	);
+
+	function getModelStatus(modelId: string): ServerModelStatus | null {
+		const model = currentRouterModels.find((m) => m.id === modelId);
+		return (model?.status?.value as ServerModelStatus) ?? null;
+	}
+
+	/**
+	 * Checks if a model supports all modalities used in the conversation.
+	 * Returns true if the model can be selected, false if it should be disabled.
+	 */
+	function isModelCompatible(option: ModelOption): boolean {
+		void propsCacheVersion();
+
+		const modelModalities = modelsStore.getModelModalities(option.model);
+
+		if (!modelModalities) {
+			const status = getModelStatus(option.model);
+
+			if (status === ServerModelStatus.LOADED) {
+				if (requiredModalities.vision || requiredModalities.audio) return false;
+			}
+
+			return true;
+		}
+
+		if (requiredModalities.vision && !modelModalities.vision) return false;
+		if (requiredModalities.audio && !modelModalities.audio) return false;
+
+		return true;
+	}
+
+	/**
+	 * Gets missing modalities for a model.
+	 * Returns object with vision/audio booleans indicating what's missing.
+	 */
+	function getMissingModalities(option: ModelOption): { vision: boolean; audio: boolean } | null {
+		void propsCacheVersion();
+
+		const modelModalities = modelsStore.getModelModalities(option.model);
+
+		if (!modelModalities) {
+			const status = getModelStatus(option.model);
+
+			if (status === ServerModelStatus.LOADED) {
+				const missing = {
+					vision: requiredModalities.vision,
+					audio: requiredModalities.audio
+				};
+
+				if (missing.vision || missing.audio) return missing;
+			}
+
+			return null;
+		}
+
+		const missing = {
+			vision: requiredModalities.vision && !modelModalities.vision,
+			audio: requiredModalities.audio && !modelModalities.audio
+		};
+
+		if (!missing.vision && !missing.audio) return null;
+
+		return missing;
+	}
+
+	let isHighlightedCurrentModelActive = $derived(
+		!isRouter || !currentModel
+			? false
+			: (() => {
+					const currentOption = options.find((option) => option.model === currentModel);
+
+					return currentOption ? currentOption.id === activeId : false;
+				})()
+	);
+
+	let isCurrentModelInCache = $derived(() => {
+		if (!isRouter || !currentModel) return true;
+
+		return options.some((option) => option.model === currentModel);
+	});
+
+	let searchTerm = $state('');
+	let searchInputRef = $state<HTMLInputElement | null>(null);
+	let highlightedIndex = $state<number>(-1);
+
+	let filteredOptions: ModelOption[] = $derived(
+		(() => {
+			const term = searchTerm.trim().toLowerCase();
+			if (!term) return options;
+
+			return options.filter(
+				(option) =>
+					option.model.toLowerCase().includes(term) || option.name?.toLowerCase().includes(term)
+			);
+		})()
+	);
+
+	// Get indices of compatible options for keyboard navigation
+	let compatibleIndices = $derived(
+		filteredOptions
+			.map((option, index) => (isModelCompatible(option) ? index : -1))
+			.filter((i) => i !== -1)
+	);
+
+	// Reset highlighted index when search term changes
+	$effect(() => {
+		void searchTerm;
+		highlightedIndex = -1;
+	});
+
+	let isOpen = $state(false);
+	let showModelDialog = $state(false);
+
+	onMount(() => {
+		modelsStore.fetch().catch((error) => {
+			console.error('Unable to load models:', error);
+		});
+	});
+
+	// Handle changes to the model selector pop-down or the model dialog, depending on if the server is in
+	// router mode or not.
+	function handleOpenChange(open: boolean) {
+		if (loading || updating) return;
+
+		if (isRouter) {
+			if (open) {
+				isOpen = true;
+				searchTerm = '';
+				highlightedIndex = -1;
+
+				// Focus search input after popover opens
+				tick().then(() => {
+					requestAnimationFrame(() => searchInputRef?.focus());
+				});
+
+				modelsStore.fetchRouterModels().then(() => {
+					modelsStore.fetchModalitiesForLoadedModels();
+				});
+			} else {
+				isOpen = false;
+				searchTerm = '';
+				highlightedIndex = -1;
+			}
+		} else {
+			showModelDialog = open;
+		}
+	}
+
+	export function open() {
+		handleOpenChange(true);
+	}
+
+	function handleSearchKeyDown(event: KeyboardEvent) {
+		if (event.isComposing) return;
+
+		if (event.key === 'ArrowDown') {
+			event.preventDefault();
+			if (compatibleIndices.length === 0) return;
+
+			const currentPos = compatibleIndices.indexOf(highlightedIndex);
+			if (currentPos === -1 || currentPos === compatibleIndices.length - 1) {
+				highlightedIndex = compatibleIndices[0];
+			} else {
+				highlightedIndex = compatibleIndices[currentPos + 1];
+			}
+		} else if (event.key === 'ArrowUp') {
+			event.preventDefault();
+			if (compatibleIndices.length === 0) return;
+
+			const currentPos = compatibleIndices.indexOf(highlightedIndex);
+			if (currentPos === -1 || currentPos === 0) {
+				highlightedIndex = compatibleIndices[compatibleIndices.length - 1];
+			} else {
+				highlightedIndex = compatibleIndices[currentPos - 1];
+			}
+		} else if (event.key === 'Enter') {
+			event.preventDefault();
+			if (highlightedIndex >= 0 && highlightedIndex < filteredOptions.length) {
+				const option = filteredOptions[highlightedIndex];
+				if (isModelCompatible(option)) {
+					handleSelect(option.id);
+				}
+			} else if (compatibleIndices.length > 0) {
+				// No selection - highlight first compatible option
+				highlightedIndex = compatibleIndices[0];
+			}
+		}
+	}
+
+	async function handleSelect(modelId: string) {
+		const option = options.find((opt) => opt.id === modelId);
+		if (!option) return;
+
+		let shouldCloseMenu = true;
+
+		if (onModelChange) {
+			// If callback provided, use it (for regenerate functionality)
+			const result = await onModelChange(option.id, option.model);
+
+			// If callback returns false, keep menu open (validation failed)
+			if (result === false) {
+				shouldCloseMenu = false;
+			}
+		} else {
+			// Update global selection
+			await modelsStore.selectModelById(option.id);
+
+			// Load the model if not already loaded (router mode)
+			if (isRouter && getModelStatus(option.model) !== ServerModelStatus.LOADED) {
+				try {
+					await modelsStore.loadModel(option.model);
+				} catch (error) {
+					console.error('Failed to load model:', error);
+				}
+			}
+		}
+
+		if (shouldCloseMenu) {
+			handleOpenChange(false);
+
+			// Focus the chat textarea after model selection
+			requestAnimationFrame(() => {
+				const textarea = document.querySelector<HTMLTextAreaElement>(
+					'[data-slot="chat-form"] textarea'
+				);
+				textarea?.focus();
+			});
+		}
+	}
+
+	function getDisplayOption(): ModelOption | undefined {
+		if (!isRouter) {
+			if (serverModel) {
+				return {
+					id: 'current',
+					model: serverModel,
+					name: serverModel.split('/').pop() || serverModel,
+					capabilities: [] // Empty array for single model mode
+				};
+			}
+
+			return undefined;
+		}
+
+		// When useGlobalSelection is true (form selector), prioritize user selection
+		// Otherwise (message display), prioritize currentModel
+		if (useGlobalSelection && activeId) {
+			const selected = options.find((option) => option.id === activeId);
+			if (selected) return selected;
+		}
+
+		// Show currentModel (from message payload or conversation)
+		if (currentModel) {
+			if (!isCurrentModelInCache()) {
+				return {
+					id: 'not-in-cache',
+					model: currentModel,
+					name: currentModel.split('/').pop() || currentModel,
+					capabilities: []
+				};
+			}
+
+			return options.find((option) => option.model === currentModel);
+		}
+
+		// Fallback to user selection (for new chats before first message)
+		if (activeId) {
+			return options.find((option) => option.id === activeId);
+		}
+
+		// No selection - return undefined to show "Select model"
+		return undefined;
+	}
+</script>
+
+<div class={cn('relative inline-flex flex-col items-end gap-1', className)}>
+	{#if loading && options.length === 0 && isRouter}
+		<div class="flex items-center gap-2 text-xs text-muted-foreground">
+			<Loader2 class="h-3.5 w-3.5 animate-spin" />
+			Loading models…
+		</div>
+	{:else if options.length === 0 && isRouter}
+		<p class="text-xs text-muted-foreground">No models available.</p>
+	{:else}
+		{@const selectedOption = getDisplayOption()}
+
+		{#if isRouter}
+			<Popover.Root bind:open={isOpen} onOpenChange={handleOpenChange}>
+				<Popover.Trigger
+					class={cn(
+						`inline-flex cursor-pointer items-center gap-1.5 rounded-sm bg-muted-foreground/10 px-1.5 py-1 text-xs transition hover:text-foreground focus:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-60`,
+						!isCurrentModelInCache()
+							? 'bg-red-400/10 !text-red-400 hover:bg-red-400/20 hover:text-red-400'
+							: forceForegroundText
+								? 'text-foreground'
+								: isHighlightedCurrentModelActive
+									? 'text-foreground'
+									: 'text-muted-foreground',
+						isOpen ? 'text-foreground' : ''
+					)}
+					style="max-width: min(calc(100cqw - 6.5rem), 32rem)"
+					disabled={disabled || updating}
+				>
+					<Package class="h-3.5 w-3.5" />
+
+					<span class="truncate font-medium">
+						{selectedOption?.model || 'Select model'}
+					</span>
+
+					{#if updating}
+						<Loader2 class="h-3 w-3.5 animate-spin" />
+					{:else}
+						<ChevronDown class="h-3 w-3.5" />
+					{/if}
+				</Popover.Trigger>
+
+				<Popover.Content
+					class="group/popover-content w-96 max-w-[calc(100vw-2rem)] p-0"
+					align="end"
+					sideOffset={8}
+					collisionPadding={16}
+				>
+					<div class="flex max-h-[50dvh] flex-col overflow-hidden">
+						<div
+							class="order-1 shrink-0 border-b p-4 group-data-[side=top]/popover-content:order-2 group-data-[side=top]/popover-content:border-t group-data-[side=top]/popover-content:border-b-0"
+						>
+							<SearchInput
+								id="model-search"
+								placeholder="Search models..."
+								bind:value={searchTerm}
+								bind:ref={searchInputRef}
+								onClose={() => handleOpenChange(false)}
+								onKeyDown={handleSearchKeyDown}
+							/>
+						</div>
+						<div
+							class="models-list order-2 min-h-0 flex-1 overflow-y-auto group-data-[side=top]/popover-content:order-1"
+						>
+							{#if !isCurrentModelInCache() && currentModel}
+								<!-- Show unavailable model as first option (disabled) -->
+								<button
+									type="button"
+									class="flex w-full cursor-not-allowed items-center bg-red-400/10 px-4 py-2 text-left text-sm text-red-400"
+									role="option"
+									aria-selected="true"
+									aria-disabled="true"
+									disabled
+								>
+									<span class="truncate">{selectedOption?.name || currentModel}</span>
+									<span class="ml-2 text-xs whitespace-nowrap opacity-70">(not available)</span>
+								</button>
+								<div class="my-1 h-px bg-border"></div>
+							{/if}
+							{#if filteredOptions.length === 0}
+								<p class="px-4 py-3 text-sm text-muted-foreground">No models found.</p>
+							{/if}
+							{#each filteredOptions as option, index (option.id)}
+								{@const status = getModelStatus(option.model)}
+								{@const isLoaded = status === ServerModelStatus.LOADED}
+								{@const isLoading = status === ServerModelStatus.LOADING}
+								{@const isSelected = currentModel === option.model || activeId === option.id}
+								{@const isCompatible = isModelCompatible(option)}
+								{@const isHighlighted = index === highlightedIndex}
+								{@const missingModalities = getMissingModalities(option)}
+
+								<div
+									class={cn(
+										'group flex w-full items-center gap-2 px-4 py-2 text-left text-sm transition focus:outline-none',
+										isCompatible
+											? 'cursor-pointer hover:bg-muted focus:bg-muted'
+											: 'cursor-not-allowed opacity-50',
+										isSelected || isHighlighted
+											? 'bg-accent text-accent-foreground'
+											: isCompatible
+												? 'hover:bg-accent hover:text-accent-foreground'
+												: '',
+										isLoaded ? 'text-popover-foreground' : 'text-muted-foreground'
+									)}
+									role="option"
+									aria-selected={isSelected || isHighlighted}
+									aria-disabled={!isCompatible}
+									tabindex={isCompatible ? 0 : -1}
+									onclick={() => isCompatible && handleSelect(option.id)}
+									onmouseenter={() => (highlightedIndex = index)}
+									onkeydown={(e) => {
+										if (isCompatible && (e.key === 'Enter' || e.key === ' ')) {
+											e.preventDefault();
+											handleSelect(option.id);
+										}
+									}}
+								>
+									<span class="min-w-0 flex-1 truncate">{option.model}</span>
+
+									{#if missingModalities}
+										<span class="flex shrink-0 items-center gap-1 text-muted-foreground/70">
+											{#if missingModalities.vision}
+												<Tooltip.Root>
+													<Tooltip.Trigger>
+														<EyeOff class="h-3.5 w-3.5" />
+													</Tooltip.Trigger>
+													<Tooltip.Content class="z-[9999]">
+														<p>No vision support</p>
+													</Tooltip.Content>
+												</Tooltip.Root>
+											{/if}
+											{#if missingModalities.audio}
+												<Tooltip.Root>
+													<Tooltip.Trigger>
+														<MicOff class="h-3.5 w-3.5" />
+													</Tooltip.Trigger>
+													<Tooltip.Content class="z-[9999]">
+														<p>No audio support</p>
+													</Tooltip.Content>
+												</Tooltip.Root>
+											{/if}
+										</span>
+									{/if}
+
+									{#if isLoading}
+										<Tooltip.Root>
+											<Tooltip.Trigger>
+												<Loader2 class="h-4 w-4 shrink-0 animate-spin text-muted-foreground" />
+											</Tooltip.Trigger>
+											<Tooltip.Content class="z-[9999]">
+												<p>Loading model...</p>
+											</Tooltip.Content>
+										</Tooltip.Root>
+									{:else if isLoaded}
+										<Tooltip.Root>
+											<Tooltip.Trigger>
+												<button
+													type="button"
+													class="relative ml-2 flex h-4 w-4 shrink-0 items-center justify-center"
+													onclick={(e) => {
+														e.stopPropagation();
+														modelsStore.unloadModel(option.model);
+													}}
+												>
+													<span
+														class="mr-2 h-2 w-2 rounded-full bg-green-500 transition-opacity group-hover:opacity-0"
+													></span>
+													<Power
+														class="absolute mr-2 h-4 w-4 text-red-500 opacity-0 transition-opacity group-hover:opacity-100 hover:text-red-600"
+													/>
+												</button>
+											</Tooltip.Trigger>
+											<Tooltip.Content class="z-[9999]">
+												<p>Unload model</p>
+											</Tooltip.Content>
+										</Tooltip.Root>
+									{:else}
+										<span class="mx-2 h-2 w-2 rounded-full bg-muted-foreground/50"></span>
+									{/if}
+								</div>
+							{/each}
+						</div>
+					</div>
+				</Popover.Content>
+			</Popover.Root>
+		{:else}
+			<button
+				class={cn(
+					`inline-flex cursor-pointer items-center gap-1.5 rounded-sm bg-muted-foreground/10 px-1.5 py-1 text-xs transition hover:text-foreground focus:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-60`,
+					!isCurrentModelInCache()
+						? 'bg-red-400/10 !text-red-400 hover:bg-red-400/20 hover:text-red-400'
+						: forceForegroundText
+							? 'text-foreground'
+							: isHighlightedCurrentModelActive
+								? 'text-foreground'
+								: 'text-muted-foreground',
+					isOpen ? 'text-foreground' : ''
+				)}
+				style="max-width: min(calc(100cqw - 6.5rem), 32rem)"
+				onclick={() => handleOpenChange(true)}
+				disabled={disabled || updating}
+			>
+				<Package class="h-3.5 w-3.5" />
+
+				<span class="truncate font-medium">
+					{selectedOption?.model}
+				</span>
+
+				{#if updating}
+					<Loader2 class="h-3 w-3.5 animate-spin" />
+				{/if}
+			</button>
+		{/if}
+	{/if}
+</div>
+
+{#if showModelDialog && !isRouter}
+	<DialogModelInformation bind:open={showModelDialog} />
+{/if}

tools/server/webui/src/lib/components/app/server/ServerErrorSplash.svelte

@@ -0,0 +1,282 @@
+<script lang="ts">
+	import { base } from '$app/paths';
+	import { AlertTriangle, RefreshCw, Key, CheckCircle, XCircle } from '@lucide/svelte';
+	import { goto } from '$app/navigation';
+	import { Button } from '$lib/components/ui/button';
+	import { Input } from '$lib/components/ui/input';
+	import Label from '$lib/components/ui/label/label.svelte';
+	import { serverStore, serverLoading } from '$lib/stores/server.svelte';
+	import { config, settingsStore } from '$lib/stores/settings.svelte';
+	import { fade, fly, scale } from 'svelte/transition';
+
+	interface Props {
+		class?: string;
+		error: string;
+		onRetry?: () => void;
+		showRetry?: boolean;
+		showTroubleshooting?: boolean;
+	}
+
+	let {
+		class: className = '',
+		error,
+		onRetry,
+		showRetry = true,
+		showTroubleshooting = false
+	}: Props = $props();
+
+	let isServerLoading = $derived(serverLoading());
+	let isAccessDeniedError = $derived(
+		error.toLowerCase().includes('access denied') ||
+			error.toLowerCase().includes('invalid api key') ||
+			error.toLowerCase().includes('unauthorized') ||
+			error.toLowerCase().includes('401') ||
+			error.toLowerCase().includes('403')
+	);
+
+	let apiKeyInput = $state('');
+	let showApiKeyInput = $state(false);
+	let apiKeyState = $state<'idle' | 'validating' | 'success' | 'error'>('idle');
+	let apiKeyError = $state('');
+
+	function handleRetryConnection() {
+		if (onRetry) {
+			onRetry();
+		} else {
+			serverStore.fetch();
+		}
+	}
+
+	function handleShowApiKeyInput() {
+		showApiKeyInput = true;
+		// Pre-fill with current API key if it exists
+		const currentConfig = config();
+		apiKeyInput = currentConfig.apiKey?.toString() || '';
+	}
+
+	async function handleSaveApiKey() {
+		if (!apiKeyInput.trim()) return;
+
+		apiKeyState = 'validating';
+		apiKeyError = '';
+
+		try {
+			// Update the API key in settings first
+			settingsStore.updateConfig('apiKey', apiKeyInput.trim());
+
+			// Test the API key by making a real request to the server
+			const response = await fetch(`${base}/props`, {
+				headers: {
+					'Content-Type': 'application/json',
+					Authorization: `Bearer ${apiKeyInput.trim()}`
+				}
+			});
+
+			if (response.ok) {
+				// API key is valid - User Story B
+				apiKeyState = 'success';
+
+				// Show success state briefly, then navigate to home
+				setTimeout(() => {
+					goto(`#/`);
+				}, 1000);
+			} else {
+				// API key is invalid - User Story A
+				apiKeyState = 'error';
+
+				if (response.status === 401 || response.status === 403) {
+					apiKeyError = 'Invalid API key - please check and try again';
+				} else {
+					apiKeyError = `Authentication failed (${response.status})`;
+				}
+
+				// Reset to idle state after showing error (don't reload UI)
+				setTimeout(() => {
+					apiKeyState = 'idle';
+				}, 3000);
+			}
+		} catch (error) {
+			// Network or other errors - User Story A
+			apiKeyState = 'error';
+
+			if (error instanceof Error) {
+				if (error.message.includes('fetch')) {
+					apiKeyError = 'Cannot connect to server - check if server is running';
+				} else {
+					apiKeyError = error.message;
+				}
+			} else {
+				apiKeyError = 'Connection error - please try again';
+			}
+
+			// Reset to idle state after showing error (don't reload UI)
+			setTimeout(() => {
+				apiKeyState = 'idle';
+			}, 3000);
+		}
+	}
+
+	function handleApiKeyKeydown(event: KeyboardEvent) {
+		if (event.key === 'Enter') {
+			handleSaveApiKey();
+		}
+	}
+</script>
+
+<div class="flex h-full items-center justify-center {className}">
+	<div class="w-full max-w-md px-4 text-center">
+		<div class="mb-6" in:fade={{ duration: 300 }}>
+			<div
+				class="mx-auto mb-4 flex h-16 w-16 items-center justify-center rounded-full bg-destructive/10"
+			>
+				<AlertTriangle class="h-8 w-8 text-destructive" />
+			</div>
+
+			<h2 class="mb-2 text-xl font-semibold">Server Connection Error</h2>
+
+			<p class="mb-4 text-sm text-muted-foreground">
+				{error}
+			</p>
+		</div>
+
+		{#if isAccessDeniedError && !showApiKeyInput}
+			<div in:fly={{ y: 10, duration: 300, delay: 200 }} class="mb-4">
+				<Button onclick={handleShowApiKeyInput} variant="outline" class="w-full">
+					<Key class="h-4 w-4" />
+					Enter API Key
+				</Button>
+			</div>
+		{/if}
+
+		{#if showApiKeyInput}
+			<div in:fly={{ y: 10, duration: 300, delay: 200 }} class="mb-4 space-y-3 text-left">
+				<div class="space-y-2">
+					<Label for="api-key-input" class="text-sm font-medium">API Key</Label>
+
+					<div class="relative">
+						<Input
+							id="api-key-input"
+							placeholder="Enter your API key..."
+							bind:value={apiKeyInput}
+							onkeydown={handleApiKeyKeydown}
+							class="w-full pr-10 {apiKeyState === 'error'
+								? 'border-destructive'
+								: apiKeyState === 'success'
+									? 'border-green-500'
+									: ''}"
+							disabled={apiKeyState === 'validating'}
+						/>
+						{#if apiKeyState === 'validating'}
+							<div class="absolute top-1/2 right-3 -translate-y-1/2">
+								<RefreshCw class="h-4 w-4 animate-spin text-muted-foreground" />
+							</div>
+						{:else if apiKeyState === 'success'}
+							<div
+								class="absolute top-1/2 right-3 -translate-y-1/2"
+								in:scale={{ duration: 200, start: 0.8 }}
+							>
+								<CheckCircle class="h-4 w-4 text-green-500" />
+							</div>
+						{:else if apiKeyState === 'error'}
+							<div
+								class="absolute top-1/2 right-3 -translate-y-1/2"
+								in:scale={{ duration: 200, start: 0.8 }}
+							>
+								<XCircle class="h-4 w-4 text-destructive" />
+							</div>
+						{/if}
+					</div>
+					{#if apiKeyError}
+						<p class="text-sm text-destructive" in:fly={{ y: -10, duration: 200 }}>
+							{apiKeyError}
+						</p>
+					{/if}
+					{#if apiKeyState === 'success'}
+						<p class="text-sm text-green-600" in:fly={{ y: -10, duration: 200 }}>
+							✓ API key validated successfully! Connecting...
+						</p>
+					{/if}
+				</div>
+				<div class="flex gap-2">
+					<Button
+						onclick={handleSaveApiKey}
+						disabled={!apiKeyInput.trim() ||
+							apiKeyState === 'validating' ||
+							apiKeyState === 'success'}
+						class="flex-1"
+					>
+						{#if apiKeyState === 'validating'}
+							<RefreshCw class="h-4 w-4 animate-spin" />
+							Validating...
+						{:else if apiKeyState === 'success'}
+							Success!
+						{:else}
+							Save & Retry
+						{/if}
+					</Button>
+					<Button
+						onclick={() => {
+							showApiKeyInput = false;
+							apiKeyState = 'idle';
+							apiKeyError = '';
+						}}
+						variant="outline"
+						class="flex-1"
+						disabled={apiKeyState === 'validating'}
+					>
+						Cancel
+					</Button>
+				</div>
+			</div>
+		{/if}
+
+		{#if showRetry}
+			<div in:fly={{ y: 10, duration: 300, delay: 200 }}>
+				<Button onclick={handleRetryConnection} disabled={isServerLoading} class="w-full">
+					{#if isServerLoading}
+						<RefreshCw class="h-4 w-4 animate-spin" />
+
+						Connecting...
+					{:else}
+						<RefreshCw class="h-4 w-4" />
+
+						Retry Connection
+					{/if}
+				</Button>
+			</div>
+		{/if}
+
+		{#if showTroubleshooting}
+			<div class="mt-4 text-left" in:fly={{ y: 10, duration: 300, delay: 400 }}>
+				<details class="text-sm">
+					<summary class="cursor-pointer text-muted-foreground hover:text-foreground">
+						Troubleshooting
+					</summary>
+
+					<div class="mt-2 space-y-3 text-xs text-muted-foreground">
+						<div class="space-y-2">
+							<p class="mb-4 font-medium">Start the llama-server:</p>
+
+							<div class="rounded bg-muted/50 px-2 py-1 font-mono text-xs">
+								<p>llama-server -hf ggml-org/gemma-3-4b-it-GGUF</p>
+							</div>
+
+							<p>or</p>
+
+							<div class="rounded bg-muted/50 px-2 py-1 font-mono text-xs">
+								<p class="mt-1">llama-server -m locally-stored-model.gguf</p>
+							</div>
+						</div>
+						<ul class="list-disc space-y-1 pl-4">
+							<li>Check that the server is accessible at the correct URL</li>
+
+							<li>Verify your network connection</li>
+
+							<li>Check server logs for any error messages</li>
+						</ul>
+					</div>
+				</details>
+			</div>
+		{/if}
+	</div>
+</div>

tools/server/webui/src/lib/components/app/server/ServerLoadingSplash.svelte

@@ -0,0 +1,33 @@
+<script lang="ts">
+	import { Server } from '@lucide/svelte';
+	import { ServerStatus } from '$lib/components/app';
+	import { fade } from 'svelte/transition';
+
+	interface Props {
+		class?: string;
+		message?: string;
+	}
+
+	let { class: className = '', message = 'Initializing connection to llama.cpp server...' }: Props =
+		$props();
+</script>
+
+<div class="flex h-full items-center justify-center {className}">
+	<div class="text-center">
+		<div class="mb-4" in:fade={{ duration: 300 }}>
+			<div class="mx-auto mb-4 flex h-16 w-16 items-center justify-center rounded-full bg-muted">
+				<Server class="h-8 w-8 animate-pulse text-muted-foreground" />
+			</div>
+
+			<h2 class="mb-2 text-xl font-semibold">Connecting to Server</h2>
+
+			<p class="text-sm text-muted-foreground">
+				{message}
+			</p>
+		</div>
+
+		<div class="mt-4">
+			<ServerStatus class="justify-center" />
+		</div>
+	</div>
+</div>

tools/server/webui/src/lib/components/app/server/ServerStatus.svelte

@@ -0,0 +1,65 @@
+<script lang="ts">
+	import { AlertTriangle, Server } from '@lucide/svelte';
+	import { Badge } from '$lib/components/ui/badge';
+	import { Button } from '$lib/components/ui/button';
+	import { serverProps, serverLoading, serverError } from '$lib/stores/server.svelte';
+	import { singleModelName } from '$lib/stores/models.svelte';
+
+	interface Props {
+		class?: string;
+		showActions?: boolean;
+	}
+
+	let { class: className = '', showActions = false }: Props = $props();
+
+	let error = $derived(serverError());
+	let loading = $derived(serverLoading());
+	let model = $derived(singleModelName());
+	let serverData = $derived(serverProps());
+
+	function getStatusColor() {
+		if (loading) return 'bg-yellow-500';
+		if (error) return 'bg-red-500';
+		if (serverData) return 'bg-green-500';
+
+		return 'bg-gray-500';
+	}
+
+	function getStatusText() {
+		if (loading) return 'Connecting...';
+		if (error) return 'Connection Error';
+		if (serverData) return 'Connected';
+
+		return 'Unknown';
+	}
+</script>
+
+<div class="flex items-center space-x-3 {className}">
+	<div class="flex items-center space-x-2">
+		<div class="h-2 w-2 rounded-full {getStatusColor()}"></div>
+
+		<span class="text-sm text-muted-foreground">{getStatusText()}</span>
+	</div>
+
+	{#if serverData && !error}
+		<Badge variant="outline" class="text-xs">
+			<Server class="mr-1 h-3 w-3" />
+
+			{model || 'Unknown Model'}
+		</Badge>
+
+		{#if serverData.default_generation_settings.n_ctx}
+			<Badge variant="secondary" class="text-xs">
+				ctx: {serverData.default_generation_settings.n_ctx.toLocaleString()}
+			</Badge>
+		{/if}
+	{/if}
+
+	{#if showActions && error}
+		<Button variant="outline" size="sm" class="text-destructive">
+			<AlertTriangle class="h-4 w-4" />
+
+			{error}
+		</Button>
+	{/if}
+</div>

tools/server/webui/src/lib/components/ui/alert-dialog/alert-dialog-action.svelte

@@ -0,0 +1,18 @@
+<script lang="ts">
+	import { AlertDialog as AlertDialogPrimitive } from 'bits-ui';
+	import { buttonVariants } from '$lib/components/ui/button/index.js';
+	import { cn } from '$lib/components/ui/utils.js';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		...restProps
+	}: AlertDialogPrimitive.ActionProps = $props();
+</script>
+
+<AlertDialogPrimitive.Action
+	bind:ref
+	data-slot="alert-dialog-action"
+	class={cn(buttonVariants(), className)}
+	{...restProps}
+/>

tools/server/webui/src/lib/components/ui/alert-dialog/alert-dialog-cancel.svelte

@@ -0,0 +1,18 @@
+<script lang="ts">
+	import { AlertDialog as AlertDialogPrimitive } from 'bits-ui';
+	import { buttonVariants } from '$lib/components/ui/button/index.js';
+	import { cn } from '$lib/components/ui/utils.js';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		...restProps
+	}: AlertDialogPrimitive.CancelProps = $props();
+</script>
+
+<AlertDialogPrimitive.Cancel
+	bind:ref
+	data-slot="alert-dialog-cancel"
+	class={cn(buttonVariants({ variant: 'outline' }), className)}
+	{...restProps}
+/>

tools/server/webui/src/lib/components/ui/alert-dialog/alert-dialog-content.svelte

@@ -0,0 +1,35 @@
+<script lang="ts">
+	import { AlertDialog as AlertDialogPrimitive } from 'bits-ui';
+	import AlertDialogOverlay from './alert-dialog-overlay.svelte';
+	import { cn, type WithoutChild, type WithoutChildrenOrChild } from '$lib/components/ui/utils.js';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		portalProps,
+		...restProps
+	}: WithoutChild<AlertDialogPrimitive.ContentProps> & {
+		portalProps?: WithoutChildrenOrChild<AlertDialogPrimitive.PortalProps>;
+	} = $props();
+</script>
+
+<AlertDialogPrimitive.Portal {...portalProps}>
+	<AlertDialogOverlay />
+	<AlertDialogPrimitive.Content
+		bind:ref
+		data-slot="alert-dialog-content"
+		class={cn(
+			'fixed z-[999999] grid w-full gap-4 border bg-background p-6 shadow-lg duration-200',
+			// Mobile: Bottom sheet behavior
+			'right-0 bottom-0 left-0 max-h-[100dvh] translate-x-0 translate-y-0 overflow-y-auto rounded-t-lg',
+			'data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=closed]:slide-out-to-bottom-full',
+			'data-[state=open]:animate-in data-[state=open]:fade-in-0 data-[state=open]:slide-in-from-bottom-full',
+			// Desktop: Centered dialog behavior
+			'sm:top-[50%] sm:right-auto sm:bottom-auto sm:left-[50%] sm:max-h-[100vh] sm:max-w-lg sm:translate-x-[-50%] sm:translate-y-[-50%] sm:rounded-lg',
+			'sm:data-[state=closed]:slide-out-to-bottom-0 sm:data-[state=closed]:zoom-out-95',
+			'sm:data-[state=open]:slide-in-from-bottom-0 sm:data-[state=open]:zoom-in-95',
+			className
+		)}
+		{...restProps}
+	/>
+</AlertDialogPrimitive.Portal>

tools/server/webui/src/lib/components/ui/alert-dialog/alert-dialog-description.svelte

@@ -0,0 +1,17 @@
+<script lang="ts">
+	import { AlertDialog as AlertDialogPrimitive } from 'bits-ui';
+	import { cn } from '$lib/components/ui/utils.js';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		...restProps
+	}: AlertDialogPrimitive.DescriptionProps = $props();
+</script>
+
+<AlertDialogPrimitive.Description
+	bind:ref
+	data-slot="alert-dialog-description"
+	class={cn('text-sm text-muted-foreground', className)}
+	{...restProps}
+/>

tools/server/webui/src/lib/components/ui/alert-dialog/alert-dialog-footer.svelte

@@ -0,0 +1,23 @@
+<script lang="ts">
+	import { cn, type WithElementRef } from '$lib/components/ui/utils.js';
+	import type { HTMLAttributes } from 'svelte/elements';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLDivElement>> = $props();
+</script>
+
+<div
+	bind:this={ref}
+	data-slot="alert-dialog-footer"
+	class={cn(
+		'mt-6 flex flex-row gap-2 sm:mt-0 sm:justify-end [&>*]:flex-1 sm:[&>*]:flex-none',
+		className
+	)}
+	{...restProps}
+>
+	{@render children?.()}
+</div>

tools/server/webui/src/lib/components/ui/alert-dialog/alert-dialog-header.svelte

@@ -0,0 +1,20 @@
+<script lang="ts">
+	import type { HTMLAttributes } from 'svelte/elements';
+	import { cn, type WithElementRef } from '$lib/components/ui/utils.js';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLDivElement>> = $props();
+</script>
+
+<div
+	bind:this={ref}
+	data-slot="alert-dialog-header"
+	class={cn('flex flex-col gap-2 text-center sm:text-left', className)}
+	{...restProps}
+>
+	{@render children?.()}
+</div>

tools/server/webui/src/lib/components/ui/alert-dialog/alert-dialog-overlay.svelte

@@ -0,0 +1,20 @@
+<script lang="ts">
+	import { AlertDialog as AlertDialogPrimitive } from 'bits-ui';
+	import { cn } from '$lib/components/ui/utils.js';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		...restProps
+	}: AlertDialogPrimitive.OverlayProps = $props();
+</script>
+
+<AlertDialogPrimitive.Overlay
+	bind:ref
+	data-slot="alert-dialog-overlay"
+	class={cn(
+		'fixed inset-0 z-50 bg-black/50 data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:animate-in data-[state=open]:fade-in-0',
+		className
+	)}
+	{...restProps}
+/>

tools/server/webui/src/lib/components/ui/alert-dialog/alert-dialog-title.svelte

@@ -0,0 +1,17 @@
+<script lang="ts">
+	import { AlertDialog as AlertDialogPrimitive } from 'bits-ui';
+	import { cn } from '$lib/components/ui/utils.js';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		...restProps
+	}: AlertDialogPrimitive.TitleProps = $props();
+</script>
+
+<AlertDialogPrimitive.Title
+	bind:ref
+	data-slot="alert-dialog-title"
+	class={cn('text-lg font-semibold', className)}
+	{...restProps}
+/>

tools/server/webui/src/lib/components/ui/alert-dialog/alert-dialog-trigger.svelte

@@ -0,0 +1,7 @@
+<script lang="ts">
+	import { AlertDialog as AlertDialogPrimitive } from 'bits-ui';
+
+	let { ref = $bindable(null), ...restProps }: AlertDialogPrimitive.TriggerProps = $props();
+</script>
+
+<AlertDialogPrimitive.Trigger bind:ref data-slot="alert-dialog-trigger" {...restProps} />

tools/server/webui/src/lib/components/ui/alert-dialog/index.ts

@@ -0,0 +1,39 @@
+import { AlertDialog as AlertDialogPrimitive } from 'bits-ui';
+import Trigger from './alert-dialog-trigger.svelte';
+import Title from './alert-dialog-title.svelte';
+import Action from './alert-dialog-action.svelte';
+import Cancel from './alert-dialog-cancel.svelte';
+import Footer from './alert-dialog-footer.svelte';
+import Header from './alert-dialog-header.svelte';
+import Overlay from './alert-dialog-overlay.svelte';
+import Content from './alert-dialog-content.svelte';
+import Description from './alert-dialog-description.svelte';
+
+const Root = AlertDialogPrimitive.Root;
+const Portal = AlertDialogPrimitive.Portal;
+
+export {
+	Root,
+	Title,
+	Action,
+	Cancel,
+	Portal,
+	Footer,
+	Header,
+	Trigger,
+	Overlay,
+	Content,
+	Description,
+	//
+	Root as AlertDialog,
+	Title as AlertDialogTitle,
+	Action as AlertDialogAction,
+	Cancel as AlertDialogCancel,
+	Portal as AlertDialogPortal,
+	Footer as AlertDialogFooter,
+	Header as AlertDialogHeader,
+	Trigger as AlertDialogTrigger,
+	Overlay as AlertDialogOverlay,
+	Content as AlertDialogContent,
+	Description as AlertDialogDescription
+};

tools/server/webui/src/lib/components/ui/alert/alert-description.svelte

@@ -0,0 +1,23 @@
+<script lang="ts">
+	import type { HTMLAttributes } from 'svelte/elements';
+	import { cn, type WithElementRef } from '$lib/components/ui/utils.js';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLDivElement>> = $props();
+</script>
+
+<div
+	bind:this={ref}
+	data-slot="alert-description"
+	class={cn(
+		'col-start-2 grid justify-items-start gap-1 text-sm text-muted-foreground [&_p]:leading-relaxed',
+		className
+	)}
+	{...restProps}
+>
+	{@render children?.()}
+</div>

tools/server/webui/src/lib/components/ui/alert/alert-title.svelte

@@ -0,0 +1,20 @@
+<script lang="ts">
+	import type { HTMLAttributes } from 'svelte/elements';
+	import { cn, type WithElementRef } from '$lib/components/ui/utils.js';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLDivElement>> = $props();
+</script>
+
+<div
+	bind:this={ref}
+	data-slot="alert-title"
+	class={cn('col-start-2 line-clamp-1 min-h-4 font-medium tracking-tight', className)}
+	{...restProps}
+>
+	{@render children?.()}
+</div>

tools/server/webui/src/lib/components/ui/alert/alert.svelte

@@ -0,0 +1,44 @@
+<script lang="ts" module>
+	import { type VariantProps, tv } from 'tailwind-variants';
+
+	export const alertVariants = tv({
+		base: 'relative grid w-full grid-cols-[0_1fr] items-start gap-y-0.5 rounded-lg border px-4 py-3 text-sm has-[>svg]:grid-cols-[calc(var(--spacing)*4)_1fr] has-[>svg]:gap-x-3 [&>svg]:size-4 [&>svg]:translate-y-0.5 [&>svg]:text-current',
+		variants: {
+			variant: {
+				default: 'bg-card text-card-foreground',
+				destructive:
+					'text-destructive bg-card *:data-[slot=alert-description]:text-destructive/90 [&>svg]:text-current'
+			}
+		},
+		defaultVariants: {
+			variant: 'default'
+		}
+	});
+
+	export type AlertVariant = VariantProps<typeof alertVariants>['variant'];
+</script>
+
+<script lang="ts">
+	import type { HTMLAttributes } from 'svelte/elements';
+	import { cn, type WithElementRef } from '$lib/components/ui/utils.js';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		variant = 'default',
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLDivElement>> & {
+		variant?: AlertVariant;
+	} = $props();
+</script>
+
+<div
+	bind:this={ref}
+	data-slot="alert"
+	class={cn(alertVariants({ variant }), className)}
+	{...restProps}
+	role="alert"
+>
+	{@render children?.()}
+</div>

tools/server/webui/src/lib/components/ui/alert/index.ts

@@ -0,0 +1,14 @@
+import Root from './alert.svelte';
+import Description from './alert-description.svelte';
+import Title from './alert-title.svelte';
+export { alertVariants, type AlertVariant } from './alert.svelte';
+
+export {
+	Root,
+	Description,
+	Title,
+	//
+	Root as Alert,
+	Description as AlertDescription,
+	Title as AlertTitle
+};

tools/server/webui/src/lib/components/ui/badge/badge.svelte

@@ -0,0 +1,49 @@
+<script lang="ts" module>
+	import { type VariantProps, tv } from 'tailwind-variants';
+
+	export const badgeVariants = tv({
+		base: 'focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive inline-flex w-fit shrink-0 items-center justify-center gap-1 overflow-hidden whitespace-nowrap rounded-md border px-2 py-0.5 text-xs font-medium transition-[color,box-shadow] focus-visible:ring-[3px] [&>svg]:pointer-events-none [&>svg]:size-3',
+		variants: {
+			variant: {
+				default: 'bg-primary text-primary-foreground [a&]:hover:bg-primary/90 border-transparent',
+				secondary:
+					'bg-secondary text-secondary-foreground [a&]:hover:bg-secondary/90 border-transparent',
+				destructive:
+					'bg-destructive [a&]:hover:bg-destructive/90 focus-visible:ring-destructive/20 dark:focus-visible:ring-destructive/40 dark:bg-destructive/70 border-transparent text-white',
+				outline: 'text-foreground [a&]:hover:bg-accent [a&]:hover:text-accent-foreground'
+			}
+		},
+		defaultVariants: {
+			variant: 'default'
+		}
+	});
+
+	export type BadgeVariant = VariantProps<typeof badgeVariants>['variant'];
+</script>
+
+<script lang="ts">
+	import type { HTMLAnchorAttributes } from 'svelte/elements';
+	import { cn, type WithElementRef } from '$lib/components/ui/utils';
+
+	let {
+		ref = $bindable(null),
+		href,
+		class: className,
+		variant = 'default',
+		children,
+		...restProps
+	}: WithElementRef<HTMLAnchorAttributes> & {
+		variant?: BadgeVariant;
+	} = $props();
+</script>
+
+<svelte:element
+	this={href ? 'a' : 'span'}
+	bind:this={ref}
+	data-slot="badge"
+	{href}
+	class={cn(badgeVariants({ variant }), className)}
+	{...restProps}
+>
+	{@render children?.()}
+</svelte:element>

tools/server/webui/src/lib/components/ui/badge/index.ts

@@ -0,0 +1,2 @@
+export { default as Badge } from './badge.svelte';
+export { badgeVariants, type BadgeVariant } from './badge.svelte';

tools/server/webui/src/lib/components/ui/button/button.svelte

@@ -0,0 +1,87 @@
+<script lang="ts" module>
+	import { cn, type WithElementRef } from '$lib/components/ui/utils';
+	import type { HTMLAnchorAttributes, HTMLButtonAttributes } from 'svelte/elements';
+	import { type VariantProps, tv } from 'tailwind-variants';
+
+	export const buttonVariants = tv({
+		base: "focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive inline-flex shrink-0 items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium outline-none transition-all focus-visible:ring-[3px] disabled:pointer-events-none disabled:opacity-50 aria-disabled:pointer-events-none aria-disabled:opacity-50 [&_svg:not([class*='size-'])]:size-4 [&_svg]:pointer-events-none [&_svg]:shrink-0",
+		variants: {
+			variant: {
+				default: 'bg-primary text-primary-foreground shadow-xs hover:bg-primary/90',
+				destructive:
+					'bg-destructive shadow-xs hover:bg-destructive/90 focus-visible:ring-destructive/20 dark:focus-visible:ring-destructive/40 dark:bg-destructive/60 text-white',
+				outline:
+					'bg-background shadow-xs hover:bg-accent hover:text-accent-foreground dark:bg-input/30 dark:border-input dark:hover:bg-input/50 border',
+				secondary: 'bg-secondary text-secondary-foreground shadow-xs hover:bg-secondary/80',
+				ghost: 'hover:bg-accent hover:text-accent-foreground dark:hover:bg-accent/50',
+				link: 'text-primary underline-offset-4 hover:underline'
+			},
+			size: {
+				default: 'h-9 px-4 py-2 has-[>svg]:px-3',
+				sm: 'h-8 gap-1.5 rounded-md px-3 has-[>svg]:px-2.5',
+				lg: 'h-10 rounded-md px-6 has-[>svg]:px-4',
+				icon: 'size-9'
+			}
+		},
+		defaultVariants: {
+			variant: 'default',
+			size: 'default'
+		}
+	});
+
+	export type ButtonVariant = VariantProps<typeof buttonVariants>['variant'];
+	export type ButtonSize = VariantProps<typeof buttonVariants>['size'];
+
+	export type ButtonProps = WithElementRef<HTMLButtonAttributes> &
+		WithElementRef<HTMLAnchorAttributes> & {
+			variant?: ButtonVariant;
+			size?: ButtonSize;
+		};
+</script>
+
+<script lang="ts">
+	let {
+		class: className,
+		variant = 'default',
+		size = 'default',
+		ref = $bindable(null),
+		href = undefined,
+		type = 'button',
+		disabled,
+		children,
+		...restProps
+	}: ButtonProps = $props();
+</script>
+
+{#if href}
+	<a
+		bind:this={ref}
+		data-slot="button"
+		class={cn(buttonVariants({ variant, size }), className)}
+		href={disabled ? undefined : href}
+		aria-disabled={disabled}
+		role={disabled ? 'link' : undefined}
+		tabindex={disabled ? -1 : undefined}
+		{...restProps}
+	>
+		{@render children?.()}
+	</a>
+{:else}
+	<button
+		bind:this={ref}
+		data-slot="button"
+		class={cn(buttonVariants({ variant, size }), className)}
+		{type}
+		{disabled}
+		{...restProps}
+	>
+		{@render children?.()}
+	</button>
+{/if}
+
+<style>
+	a,
+	button {
+		cursor: pointer;
+	}
+</style>

tools/server/webui/src/lib/components/ui/button/index.ts

@@ -0,0 +1,17 @@
+import Root, {
+	type ButtonProps,
+	type ButtonSize,
+	type ButtonVariant,
+	buttonVariants
+} from './button.svelte';
+
+export {
+	Root,
+	type ButtonProps as Props,
+	//
+	Root as Button,
+	buttonVariants,
+	type ButtonProps,
+	type ButtonSize,
+	type ButtonVariant
+};

tools/server/webui/src/lib/components/ui/card/card-action.svelte

@@ -0,0 +1,20 @@
+<script lang="ts">
+	import { cn, type WithElementRef } from '$lib/components/ui/utils';
+	import type { HTMLAttributes } from 'svelte/elements';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLDivElement>> = $props();
+</script>
+
+<div
+	bind:this={ref}
+	data-slot="card-action"
+	class={cn('col-start-2 row-span-2 row-start-1 self-start justify-self-end', className)}
+	{...restProps}
+>
+	{@render children?.()}
+</div>

tools/server/webui/src/lib/components/ui/card/card-content.svelte

@@ -0,0 +1,15 @@
+<script lang="ts">
+	import type { HTMLAttributes } from 'svelte/elements';
+	import { cn, type WithElementRef } from '$lib/components/ui/utils';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLDivElement>> = $props();
+</script>
+
+<div bind:this={ref} data-slot="card-content" class={cn('px-6', className)} {...restProps}>
+	{@render children?.()}
+</div>

tools/server/webui/src/lib/components/ui/card/card-description.svelte

@@ -0,0 +1,20 @@
+<script lang="ts">
+	import type { HTMLAttributes } from 'svelte/elements';
+	import { cn, type WithElementRef } from '$lib/components/ui/utils';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLParagraphElement>> = $props();
+</script>
+
+<p
+	bind:this={ref}
+	data-slot="card-description"
+	class={cn('text-sm text-muted-foreground', className)}
+	{...restProps}
+>
+	{@render children?.()}
+</p>

tools/server/webui/src/lib/components/ui/card/card-footer.svelte

@@ -0,0 +1,20 @@
+<script lang="ts">
+	import { cn, type WithElementRef } from '$lib/components/ui/utils';
+	import type { HTMLAttributes } from 'svelte/elements';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLDivElement>> = $props();
+</script>
+
+<div
+	bind:this={ref}
+	data-slot="card-footer"
+	class={cn('flex items-center px-6 [.border-t]:pt-6', className)}
+	{...restProps}
+>
+	{@render children?.()}
+</div>

tools/server/webui/src/lib/components/ui/card/card-header.svelte

@@ -0,0 +1,23 @@
+<script lang="ts">
+	import { cn, type WithElementRef } from '$lib/components/ui/utils';
+	import type { HTMLAttributes } from 'svelte/elements';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLDivElement>> = $props();
+</script>
+
+<div
+	bind:this={ref}
+	data-slot="card-header"
+	class={cn(
+		'@container/card-header grid auto-rows-min grid-rows-[auto_auto] items-start gap-1.5 px-6 has-data-[slot=card-action]:grid-cols-[1fr_auto] [.border-b]:pb-6',
+		className
+	)}
+	{...restProps}
+>
+	{@render children?.()}
+</div>

tools/server/webui/src/lib/components/ui/card/card-title.svelte

@@ -0,0 +1,20 @@
+<script lang="ts">
+	import type { HTMLAttributes } from 'svelte/elements';
+	import { cn, type WithElementRef } from '$lib/components/ui/utils';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLDivElement>> = $props();
+</script>
+
+<div
+	bind:this={ref}
+	data-slot="card-title"
+	class={cn('leading-none font-semibold', className)}
+	{...restProps}
+>
+	{@render children?.()}
+</div>

tools/server/webui/src/lib/components/ui/card/card.svelte

@@ -0,0 +1,23 @@
+<script lang="ts">
+	import type { HTMLAttributes } from 'svelte/elements';
+	import { cn, type WithElementRef } from '$lib/components/ui/utils';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		children,
+		...restProps
+	}: WithElementRef<HTMLAttributes<HTMLDivElement>> = $props();
+</script>
+
+<div
+	bind:this={ref}
+	data-slot="card"
+	class={cn(
+		'flex flex-col gap-6 rounded-xl border bg-card py-6 text-card-foreground shadow-sm',
+		className
+	)}
+	{...restProps}
+>
+	{@render children?.()}
+</div>

tools/server/webui/src/lib/components/ui/card/index.ts

@@ -0,0 +1,25 @@
+import Root from './card.svelte';
+import Content from './card-content.svelte';
+import Description from './card-description.svelte';
+import Footer from './card-footer.svelte';
+import Header from './card-header.svelte';
+import Title from './card-title.svelte';
+import Action from './card-action.svelte';
+
+export {
+	Root,
+	Content,
+	Description,
+	Footer,
+	Header,
+	Title,
+	Action,
+	//
+	Root as Card,
+	Content as CardContent,
+	Description as CardDescription,
+	Footer as CardFooter,
+	Header as CardHeader,
+	Title as CardTitle,
+	Action as CardAction
+};

tools/server/webui/src/lib/components/ui/checkbox/checkbox.svelte

@@ -0,0 +1,36 @@
+<script lang="ts">
+	import { Checkbox as CheckboxPrimitive } from 'bits-ui';
+	import CheckIcon from '@lucide/svelte/icons/check';
+	import MinusIcon from '@lucide/svelte/icons/minus';
+	import { cn, type WithoutChildrenOrChild } from '$lib/components/ui/utils.js';
+
+	let {
+		ref = $bindable(null),
+		checked = $bindable(false),
+		indeterminate = $bindable(false),
+		class: className,
+		...restProps
+	}: WithoutChildrenOrChild<CheckboxPrimitive.RootProps> = $props();
+</script>
+
+<CheckboxPrimitive.Root
+	bind:ref
+	data-slot="checkbox"
+	class={cn(
+		'peer flex size-4 shrink-0 items-center justify-center rounded-[4px] border border-input shadow-xs transition-shadow outline-none focus-visible:border-ring focus-visible:ring-[3px] focus-visible:ring-ring/50 disabled:cursor-not-allowed disabled:opacity-50 aria-invalid:border-destructive aria-invalid:ring-destructive/20 data-[state=checked]:border-primary data-[state=checked]:bg-primary data-[state=checked]:text-primary-foreground dark:bg-input/30 dark:aria-invalid:ring-destructive/40 dark:data-[state=checked]:bg-primary',
+		className
+	)}
+	bind:checked
+	bind:indeterminate
+	{...restProps}
+>
+	{#snippet children({ checked, indeterminate })}
+		<div data-slot="checkbox-indicator" class="text-current transition-none">
+			{#if checked}
+				<CheckIcon class="size-3.5" />
+			{:else if indeterminate}
+				<MinusIcon class="size-3.5" />
+			{/if}
+		</div>
+	{/snippet}
+</CheckboxPrimitive.Root>

tools/server/webui/src/lib/components/ui/checkbox/index.ts

@@ -0,0 +1,6 @@
+import Root from './checkbox.svelte';
+export {
+	Root,
+	//
+	Root as Checkbox
+};

tools/server/webui/src/lib/components/ui/collapsible/collapsible-content.svelte

@@ -0,0 +1,7 @@
+<script lang="ts">
+	import { Collapsible as CollapsiblePrimitive } from 'bits-ui';
+
+	let { ref = $bindable(null), ...restProps }: CollapsiblePrimitive.ContentProps = $props();
+</script>
+
+<CollapsiblePrimitive.Content bind:ref data-slot="collapsible-content" {...restProps} />

tools/server/webui/src/lib/components/ui/collapsible/collapsible-trigger.svelte

@@ -0,0 +1,7 @@
+<script lang="ts">
+	import { Collapsible as CollapsiblePrimitive } from 'bits-ui';
+
+	let { ref = $bindable(null), ...restProps }: CollapsiblePrimitive.TriggerProps = $props();
+</script>
+
+<CollapsiblePrimitive.Trigger bind:ref data-slot="collapsible-trigger" {...restProps} />

tools/server/webui/src/lib/components/ui/collapsible/collapsible.svelte

@@ -0,0 +1,11 @@
+<script lang="ts">
+	import { Collapsible as CollapsiblePrimitive } from 'bits-ui';
+
+	let {
+		ref = $bindable(null),
+		open = $bindable(false),
+		...restProps
+	}: CollapsiblePrimitive.RootProps = $props();
+</script>
+
+<CollapsiblePrimitive.Root bind:ref bind:open data-slot="collapsible" {...restProps} />