From c95e6f735405ae1f905618a397a641dfc2eed1d0 Mon Sep 17 00:00:00 2001
From: Guilhem <guilhemlemouel@gmail.com>
Date: Wed, 21 Jan 2026 19:38:28 +0000
Subject: [PATCH] fix(frontend): improve ai chat ui (#7648)

* update chat to brand guidelines

* remove useless footer

* restore conversation count

* nit

* nit
---
 .../src/lib/components/InfiniteList.svelte    |  55 +++---
 .../components/common/badge/CountBadge.svelte |   8 +-
 .../FlowConversationsSidebar.svelte           | 163 +++++++++---------
 .../src/lib/components/table/DataTable.svelte |  10 +-
 4 files changed, 125 insertions(+), 111 deletions(-)

diff --git a/frontend/src/lib/components/InfiniteList.svelte b/frontend/src/lib/components/InfiniteList.svelte
index b4afaf41ba..10351a95cc 100644
--- a/frontend/src/lib/components/InfiniteList.svelte
+++ b/frontend/src/lib/components/InfiniteList.svelte
@@ -16,6 +16,8 @@
 		noBorder?: boolean
 		extraRowClasses?: { bgSelected: string; bgHover: string; class: string }
 		neverShowLoader?: boolean
+		preventXOverflow?: boolean
+		customRow?: import('svelte').Snippet<[any]>
 		columns?: import('svelte').Snippet
 		extra_row?: import('svelte').Snippet<[any]>
 		children?: import('svelte').Snippet<[any]>
@@ -36,6 +38,8 @@
 			class: ''
 		},
 		neverShowLoader = false,
+		preventXOverflow = false,
+		customRow,
 		columns,
 		extra_row,
 		children,
@@ -167,34 +171,41 @@
 	{rounded}
 	{noBorder}
 	{neverShowLoader}
+	{preventXOverflow}
 >
 	{@render columns?.()}
 
 	<tbody class="h-full w-full">
-		<Row
-			on:click={() => dispatch('select', 'extraRow')}
-			class={twMerge(
-				extraRowClasses.class,
-				selectedItemId === 'extraRow' ? extraRowClasses.bgSelected : extraRowClasses.bgHover,
-				'cursor-pointer rounded-md'
-			)}
-			on:hover={(e) => (hovered = e.detail ? 'extraRow' : undefined)}
-		>
-			{@render extra_row?.({ hover: hovered === 'extraRow' })}
-		</Row>
+		{#if extra_row}
+			<Row
+				on:click={() => dispatch('select', 'extraRow')}
+				class={twMerge(
+					extraRowClasses.class,
+					selectedItemId === 'extraRow' ? extraRowClasses.bgSelected : extraRowClasses.bgHover,
+					'cursor-pointer rounded-md'
+				)}
+				on:hover={(e) => (hovered = e.detail ? 'extraRow' : undefined)}
+			>
+				{@render extra_row?.({ hover: hovered === 'extraRow' })}
+			</Row>
+		{/if}
 		{#each items ?? [] as item, index}
 			{@const hover = item.id === hovered}
-			<Row
-				on:click={() => dispatch('select', item)}
-				class={twMerge(
-					selectedItemId === item.id ? 'bg-surface-selected' : 'hover:bg-surface-hover',
-					'cursor-pointer rounded-md',
-					item.isNew && index === 0 ? 'animate-slideIn' : 'group'
-				)}
-				on:hover={(e) => (hovered = e.detail ? item.id : undefined)}
-			>
-				{@render children?.({ item, hover })}
-			</Row>
+			{#if customRow}
+				{@render customRow?.({ item, hover })}
+			{:else}
+				<Row
+					on:click={() => dispatch('select', item)}
+					class={twMerge(
+						selectedItemId === item.id ? 'bg-surface-selected' : 'hover:bg-surface-hover',
+						'cursor-pointer rounded-md',
+						item.isNew && index === 0 ? 'animate-slideIn' : 'group'
+					)}
+					on:hover={(e) => (hovered = e.detail ? item.id : undefined)}
+				>
+					{@render children?.({ item, hover })}
+				</Row>
+			{/if}
 		{/each}
 	</tbody>
 
diff --git a/frontend/src/lib/components/common/badge/CountBadge.svelte b/frontend/src/lib/components/common/badge/CountBadge.svelte
index 06d1e96715..7219834bd0 100644
--- a/frontend/src/lib/components/common/badge/CountBadge.svelte
+++ b/frontend/src/lib/components/common/badge/CountBadge.svelte
@@ -6,9 +6,10 @@
 		count: number | undefined
 		small?: boolean
 		alwaysVisible?: boolean
+		class?: string
 	}
 
-	let { count, small = true, alwaysVisible = false }: Props = $props()
+	let { count, small = true, alwaysVisible = false, class: classNames = '' }: Props = $props()
 </script>
 
 {#if count === undefined || count > 0 || alwaysVisible}
@@ -25,7 +26,8 @@
 
 			// Special case for always visible
 			alwaysVisible && small ? 'h-3 w-3 text-[8px] -right-0.5 -top-0.5' : '',
-			alwaysVisible && !small ? 'h-4 w-4 text-xs -right-1 -top-1' : ''
+			alwaysVisible && !small ? 'h-4 w-4 text-xs -right-1 -top-1' : '',
+			classNames
 		)}
 	>
 		{#if count === undefined}
@@ -34,4 +36,4 @@
 			<p>{count}</p>
 		{/if}
 	</div>
-{/if}
\ No newline at end of file
+{/if}
diff --git a/frontend/src/lib/components/flows/conversations/FlowConversationsSidebar.svelte b/frontend/src/lib/components/flows/conversations/FlowConversationsSidebar.svelte
index 579e0ff3e4..2f09bcebe1 100644
--- a/frontend/src/lib/components/flows/conversations/FlowConversationsSidebar.svelte
+++ b/frontend/src/lib/components/flows/conversations/FlowConversationsSidebar.svelte
@@ -1,18 +1,12 @@
 <script lang="ts">
 	import { Button } from '$lib/components/common'
-	import {
-		MessageCircle,
-		Plus,
-		Trash2,
-		PanelLeftClose,
-		PanelLeftOpen,
-		Loader2
-	} from 'lucide-svelte'
+	import { MessageCircle, Plus, Trash2, PanelLeftClose, PanelLeftOpen } from 'lucide-svelte'
 	import { type FlowConversation } from '$lib/gen'
 	import CountBadge from '$lib/components/common/badge/CountBadge.svelte'
 	import InfiniteList from '$lib/components/InfiniteList.svelte'
 	import { twMerge } from 'tailwind-merge'
 	import { FlowChatManager } from './FlowChatManager.svelte'
+	import { fade } from 'svelte/transition'
 
 	interface Props {
 		manager: FlowChatManager
@@ -26,35 +20,37 @@
 </script>
 
 <div
-	class="flex flex-col h-full bg-surface border-r border-gray-200 dark:border-gray-700 transition-all duration-300 {manager.isSidebarExpanded
+	class="flex flex-col h-full bg-surface border-r transition-all duration-300 {manager.isSidebarExpanded
 		? 'w-60'
-		: 'w-16'}"
+		: 'w-[44px]'}"
 >
 	<!-- Header -->
-	<div class="flex-shrink-0 p-2 border-b border-gray-200 dark:border-gray-700">
-		<div class="flex flex-col gap-2">
+	<div class="flex-shrink-0 border-b">
+		<div class="flex flex-col gap-2 p-1">
 			<Button
-				size="sm"
-				color="light"
-				startIcon={{ icon: manager.isSidebarExpanded ? PanelLeftClose : PanelLeftOpen }}
-				onclick={() => (manager.isSidebarExpanded = !manager.isSidebarExpanded)}
+				unifiedSize="md"
+				variant="subtle"
+				startIcon={{
+					icon: manager.isSidebarExpanded ? PanelLeftClose : PanelLeftOpen,
+					classes: 'ml-[2px]'
+				}}
+				onClick={() => (manager.isSidebarExpanded = !manager.isSidebarExpanded)}
 				iconOnly={!manager.isSidebarExpanded}
-				btnClasses={manager.isSidebarExpanded ? '!justify-start' : ''}
-				label="Conversations"
+				btnClasses={'justify-start transition-all duration-150'}
+				title="Conversations"
 			>
-				Conversations
+				<div transition:fade={{ duration: 100 }}> Conversations </div>
 			</Button>
 			<Button
-				size="sm"
-				color="light"
-				startIcon={{ icon: Plus }}
-				onclick={() => manager.createConversation({ clearMessages: true })}
+				unifiedSize="md"
+				variant="subtle"
+				startIcon={{ icon: Plus, classes: 'ml-[2px]' }}
+				onClick={() => manager.createConversation({ clearMessages: true })}
 				title="Start new conversation"
 				iconOnly={!manager.isSidebarExpanded}
-				btnClasses={manager.isSidebarExpanded ? '!justify-start' : ''}
-				label="New chat"
+				btnClasses={'justify-start transition-all duration-150 whitespace-nowrap'}
 			>
-				New chat
+				<div transition:fade={{ duration: 100 }}> New chat </div>
 			</Button>
 		</div>
 	</div>
@@ -62,71 +58,79 @@
 	<!-- Conversations List -->
 	{#if !manager.isSidebarExpanded}
 		<!-- Collapsed state - show single chat icon with badge -->
-		<div class="p-2 flex flex-col items-center mt-2">
-			<button
-				class="relative w-[23px] h-[23px] rounded-md center-center hover:bg-surface-hover transition-all duration-100 text-secondary hover:text-primary group"
-				onclick={() => (manager.isSidebarExpanded = true)}
+		<div class="p-1">
+			<Button
+				unifiedSize="md"
+				startIcon={{ icon: MessageCircle }}
+				onClick={() => (manager.isSidebarExpanded = true)}
 				title="{manager.conversations.length} conversation{manager.conversations.length !== 1
 					? 's'
 					: ''}"
+				variant="subtle"
+				btnClasses="w-fit px-2 relative"
 			>
-				<MessageCircle size={16} />
-				<CountBadge count={manager.conversations.length} small={true} alwaysVisible={true} />
-			</button>
+				<CountBadge
+					count={manager.conversations.length}
+					small
+					alwaysVisible={true}
+					class="right-[3px] top-[3px]"
+				/>
+			</Button>
 		</div>
 	{/if}
 
 	<!-- Always mount InfiniteList, but hide it when collapsed -->
-	<div class="flex-1 overflow-hidden" class:hidden={!manager.isSidebarExpanded}>
+	<div
+		class="flex-1 overflow-hidden transition-all duration-150 p-1"
+		class:hidden={!manager.isSidebarExpanded}
+	>
 		<InfiniteList
 			bind:this={manager.conversationListComponent}
 			bind:items={manager.conversations}
 			selectedItemId={manager.selectedConversationId}
 			noBorder={true}
 			rounded={false}
+			preventXOverflow={true}
 		>
-			{#snippet children({ item: conversation, hover })}
-				<div
-					class={twMerge(
-						'w-full p-1',
-						manager.selectedConversationId === conversation.id
-							? 'bg-blue-200/30 text-blue-500 dark:bg-blue-600/30 text-blue-400'
-							: ''
-					)}
-				>
-					<Button
-						color="transparent"
-						size="xs"
-						onclick={() => manager.selectConversation(conversation.id, conversation.isDraft)}
-					>
-						<span class="flex-1 text-left text-sm font-medium text-primary truncate">
-							{getConversationTitle(conversation)}
-						</span>
-						<button
-							class="ml-2 p-1 rounded hover:bg-red-100 dark:hover:bg-red-900/30 text-red-500 transition-all {hover ||
-							manager.deletingConversationId === conversation.id
-								? 'opacity-100'
-								: 'opacity-0'}"
-							disabled={manager.deletingConversationId === conversation.id}
-							onclick={(e) => {
-								e.stopPropagation()
-								if (conversation.isDraft) {
-									// just remove first conversation as it is the draft
-									manager.conversations = [...manager.conversations.slice(1)]
-								} else {
-									manager.conversationListComponent?.deleteItem(conversation.id)
-								}
-							}}
-							title="Delete conversation"
+			{#snippet customRow({ item: conversation, hover })}
+				{#if manager.isSidebarExpanded}
+					<div class={twMerge('w-full pb-1')} transition:fade={{ duration: 100, delay: 30 }}>
+						<Button
+							unifiedSize="md"
+							variant="subtle"
+							onClick={() => manager.selectConversation(conversation.id, conversation.isDraft)}
+							selected={manager.selectedConversationId === conversation.id}
+							btnClasses="transition-all duration-150 group"
 						>
-							{#if manager.deletingConversationId === conversation.id}
-								<Loader2 size={14} class="animate-spin" />
-							{:else}
-								<Trash2 size={14} />
-							{/if}
-						</button>
-					</Button>
-				</div>
+							<span class="flex-1 text-left truncate">
+								{getConversationTitle(conversation)}
+							</span>
+							<Button
+								wrapperClasses={twMerge(
+									'ml-2 transition-all duration-100  opacity-0 group-hover:opacity-100',
+									manager.deletingConversationId === conversation.id ? 'opacity-100' : ' '
+								)}
+								disabled={manager.deletingConversationId === conversation.id}
+								onClick={(e) => {
+									e?.stopPropagation()
+									if (conversation.isDraft) {
+										// just remove first conversation as it is the draft
+										manager.conversations = [...manager.conversations.slice(1)]
+									} else {
+										manager.conversationListComponent?.deleteItem(conversation.id)
+									}
+								}}
+								title="Delete conversation"
+								destructive
+								unifiedSize="xs"
+								variant="subtle"
+								loading={manager.deletingConversationId === conversation.id}
+								iconOnly
+								startIcon={{ icon: Trash2 }}
+							/>
+						</Button>
+					</div>
+				{/if}
 			{/snippet}
 
 			{#snippet empty()}
@@ -136,13 +140,4 @@
 			{/snippet}
 		</InfiniteList>
 	</div>
-
-	{#if manager.isSidebarExpanded}
-		<!-- Footer -->
-		<div class="flex-shrink-0 p-4 border-t border-gray-200 dark:border-gray-700">
-			<p class="text-xs text-primary">
-				{manager.conversations.length} conversation{manager.conversations.length !== 1 ? 's' : ''}
-			</p>
-		</div>
-	{/if}
 </div>
diff --git a/frontend/src/lib/components/table/DataTable.svelte b/frontend/src/lib/components/table/DataTable.svelte
index c50395b089..76cc38d180 100644
--- a/frontend/src/lib/components/table/DataTable.svelte
+++ b/frontend/src/lib/components/table/DataTable.svelte
@@ -36,6 +36,7 @@
 		loading?: boolean
 		loadingMore?: boolean
 		containerClass?: string
+		preventXOverflow?: boolean
 		children?: import('svelte').Snippet
 		emptyMessage?: import('svelte').Snippet
 	}
@@ -62,7 +63,8 @@
 		loadingMore = false,
 		containerClass = '',
 		children,
-		emptyMessage
+		emptyMessage,
+		preventXOverflow = false
 	}: Props = $props()
 	setContext<DatatableContext>('datatable', {
 		size
@@ -127,7 +129,11 @@
 	bind:clientHeight={tableHeight}
 >
 	<List justify="between" gap="none" hFull={true}>
-		<div class="w-full overflow-auto h-fit" bind:this={tableContainer} onscroll={handleScroll}>
+		<div
+			class={twMerge('w-full overflow-auto h-fit', preventXOverflow ? 'overflow-x-hidden' : '')}
+			bind:this={tableContainer}
+			onscroll={handleScroll}
+		>
 			<table class={tableFixed ? 'table-fixed w-full' : 'min-w-full'}>
 				{@render children?.()}
 			</table>