From 023ea8ebac8da1bdf97c74e724957d10e3da7d9e Mon Sep 17 00:00:00 2001
From: Mahesh Sanikommu <maheshthedev@gmail.com>
Date: Sun, 7 Jun 2026 22:54:29 -0700
Subject: [PATCH] feat(chat): Grok 4.3, web sources UX, and mobile polish

Stacked on the Nova chat attachments PR (#1004): adds Grok 4.3 (default), reworks the composer toolbar + web-source citations, and overhauls the mobile chat experience (sticky nav, pinned composer, back button). Plus a11y, delete-toast, and markdown fixes.
---
 apps/web/app/(app)/page.tsx                   |   8 +-
 apps/web/components/bottom-nav.tsx            |  12 +-
 .../components/chat/home-chat-composer.tsx    |  46 +--
 apps/web/components/chat/index.tsx            | 125 ++++--
 apps/web/components/chat/input/index.tsx      |  31 +-
 .../components/chat/message/agent-message.tsx | 361 ++++++++++++++----
 apps/web/components/chat/model-selector.tsx   | 152 +++++---
 .../components/chat/reasoning-selector.tsx    | 164 +++-----
 apps/web/components/select-spaces-modal.tsx   |   6 +-
 apps/web/components/superloader.tsx           |   4 +-
 apps/web/globals.css                          |  10 +
 apps/web/hooks/use-document-mutations.ts      |  31 +-
 apps/web/lib/models.tsx                       |   6 +
 13 files changed, 600 insertions(+), 356 deletions(-)

diff --git a/apps/web/app/(app)/page.tsx b/apps/web/app/(app)/page.tsx
index d297e6f4..5c88b506 100644
--- a/apps/web/app/(app)/page.tsx
+++ b/apps/web/app/(app)/page.tsx
@@ -580,17 +580,17 @@ export default function NewPage() {
 	const isDashboardShell =
 		viewMode === "dashboard" || (viewMode === "graph" && isMobile)
 	const isGraphMode = viewMode === "graph"
-	const showBottomNav = isMobile && !!session
+	const showBottomNav = isMobile && !!session && !isChatView
 
 	return (
 		<HotkeysProvider>
 			<div
 				className={cn(
 					"relative flex min-h-dvh flex-col bg-[#05080D]",
-					isGraphMode && "h-dvh overflow-hidden",
+					(isGraphMode || isChatView) && "h-dvh overflow-hidden",
 					showBottomNav &&
 						!isGraphMode &&
-						"pb-[calc(5.5rem+env(safe-area-inset-bottom))]",
+						"pb-[calc(4rem+env(safe-area-inset-bottom))]",
 				)}
 			>
 				{showNovaBackdrop && (
@@ -770,7 +770,7 @@ export default function NewPage() {
 						className={cn(
 							"pointer-events-none fixed inset-x-0 z-30",
 							showBottomNav
-								? "bottom-[4.25rem]"
+								? "bottom-[calc(4rem+env(safe-area-inset-bottom))]"
 								: "bottom-0 bg-gradient-to-t from-black via-black/40 to-transparent pt-12",
 						)}
 					>
diff --git a/apps/web/components/bottom-nav.tsx b/apps/web/components/bottom-nav.tsx
index c611de5a..cf0a3971 100644
--- a/apps/web/components/bottom-nav.tsx
+++ b/apps/web/components/bottom-nav.tsx
@@ -55,11 +55,11 @@ export function MobileBottomNav({ onAddMemory, onOpenSearch }: BottomNavProps) {
 		<nav
 			aria-label="Primary"
 			className={cn(
-				"fixed inset-x-0 bottom-[calc(0.75rem+env(safe-area-inset-bottom))] z-40 flex justify-center px-3 md:hidden",
+				"fixed inset-x-0 bottom-0 z-40 border-t border-white/[0.08] bg-[#0A0E14]/85 shadow-[0_-8px_24px_rgba(0,0,0,0.35)] backdrop-blur-xl md:hidden",
 				dmSansClassName(),
 			)}
 		>
-			<div className="flex w-full items-center justify-around rounded-full border border-[#161F2C] bg-muted/95 px-2.5 py-2 shadow-[0_10px_30px_rgba(0,0,0,0.55)] backdrop-blur-xl">
+			<div className="flex items-center justify-around px-1 pt-2 pb-[max(0.5rem,env(safe-area-inset-bottom))]">
 				<NavTab
 					label="Home"
 					icon={Home}
@@ -76,10 +76,10 @@ export function MobileBottomNav({ onAddMemory, onOpenSearch }: BottomNavProps) {
 					type="button"
 					aria-label="Open chat"
 					onClick={() => void setViewMode("chat")}
-					className="group relative flex size-11 shrink-0 items-center justify-center self-center rounded-full outline-none transition-transform hover:scale-[1.03] focus-visible:ring-2 focus-visible:ring-[#4BA0FA]/50"
+					className="group relative flex size-11 shrink-0 items-center justify-center rounded-full shadow-[0_0_18px_rgba(75,160,250,0.35)] outline-none transition-transform hover:scale-[1.04] focus-visible:ring-2 focus-visible:ring-[#4BA0FA]/60 active:scale-95"
 				>
 					<NovaOrb
-						size={42}
+						size={40}
 						className="pointer-events-none blur-[1px]! transition-transform group-hover:scale-105"
 					/>
 				</button>
@@ -172,13 +172,13 @@ function NavTabButton({
 			aria-current={active ? "page" : undefined}
 			onClick={onClick}
 			className={cn(
-				"flex shrink-0 flex-col items-center gap-1 rounded-full px-3 py-1.5 outline-none transition-colors",
+				"flex flex-1 flex-col items-center gap-1 rounded-lg py-1 outline-none transition-colors active:scale-95",
 				active ? "text-white" : "text-[#737373] hover:text-white",
 			)}
 			{...props}
 		>
 			{children}
-			<span className="text-[10px] font-medium leading-none">{label}</span>
+			<span className="text-[11px] font-medium leading-none">{label}</span>
 		</button>
 	)
 }
diff --git a/apps/web/components/chat/home-chat-composer.tsx b/apps/web/components/chat/home-chat-composer.tsx
index 50647e02..7f9d28af 100644
--- a/apps/web/components/chat/home-chat-composer.tsx
+++ b/apps/web/components/chat/home-chat-composer.tsx
@@ -36,9 +36,9 @@ export function HomeChatComposer({
 	const [attachmentDrafts, setAttachmentDrafts] = useState<
 		ChatAttachmentDraft[]
 	>([])
-	const [selectedModel, setSelectedModel] = useState<ModelId>("gemini-2.5-pro")
+	const [selectedModel, setSelectedModel] = useState<ModelId>("grok-4.3")
 	const [reasoningEffort, setReasoningEffort] = useState<ReasoningEffort>(
-		getDefaultReasoningEffort("gemini-2.5-pro"),
+		getDefaultReasoningEffort("grok-4.3"),
 	)
 	const { selectedProject } = useProject()
 	const [chatSpaceProjects, setChatSpaceProjects] = useState<string[]>([
@@ -126,7 +126,7 @@ export function HomeChatComposer({
 
 	return (
 		<div className={cn(className)}>
-			<div className="mx-auto w-full max-w-[720px] px-4 pt-1 pb-[max(1.25rem,calc(env(safe-area-inset-bottom)+1rem))] md:pb-6">
+			<div className="mx-auto w-full max-w-[720px] px-4 pt-1 pb-2 md:pb-6">
 				<ChatInput
 					value={input}
 					onChange={(e) => setInput(e.target.value)}
@@ -141,25 +141,27 @@ export function HomeChatComposer({
 					attachmentAccept={CHAT_ATTACHMENT_ACCEPT}
 					showStatusStrip={false}
 					stackedToolbar={
-						<>
-							<ChatModelSelector
-								selectedModel={selectedModel}
-								onModelChange={handleModelChange}
-								minimal
-							/>
-							<ReasoningSelector
-								value={reasoningEffort}
-								onChange={setReasoningEffort}
-							/>
-							<SpaceSelector
-								selectedProjects={chatSpaceProjects}
-								onValueChange={setChatSpaceProjects}
-								variant="insideOut"
-								includeAuto
-								hideCount
-								triggerClassName="h-auto min-h-0 max-w-[min(160px,35vw)] rounded-full border border-[#161F2C] bg-[#000000] px-3 py-1.5 shadow-none hover:bg-[#05080D]"
-							/>
-						</>
+						<ChatModelSelector
+							selectedModel={selectedModel}
+							onModelChange={handleModelChange}
+							minimal
+						/>
+					}
+					toolbarTrailing={
+						<ReasoningSelector
+							value={reasoningEffort}
+							onChange={setReasoningEffort}
+						/>
+					}
+					toolbarEnd={
+						<SpaceSelector
+							selectedProjects={chatSpaceProjects}
+							onValueChange={setChatSpaceProjects}
+							variant="insideOut"
+							includeAuto
+							hideCount
+							triggerClassName="h-auto min-h-0 max-w-[min(160px,35vw)] gap-1.5 rounded-md border-0 bg-transparent px-2 py-1 shadow-none hover:bg-white/5"
+						/>
 					}
 				/>
 			</div>
diff --git a/apps/web/components/chat/index.tsx b/apps/web/components/chat/index.tsx
index 257cd602..a19daa1e 100644
--- a/apps/web/components/chat/index.tsx
+++ b/apps/web/components/chat/index.tsx
@@ -7,6 +7,7 @@ import { useQueryState } from "nuqs"
 import type { UIMessage } from "@ai-sdk/react"
 import { motion } from "motion/react"
 import { useChat } from "@ai-sdk/react"
+import { isWebSearchToolName } from "@/lib/chat-web-search-tools"
 import { DefaultChatTransport } from "ai"
 import NovaOrb from "@/components/nova/nova-orb"
 import { Button } from "@ui/components/button"
@@ -19,6 +20,7 @@ import {
 } from "@ui/components/sheet"
 import { ScrollArea } from "@ui/components/scroll-area"
 import {
+	ArrowLeftIcon,
 	Check,
 	ChevronDownIcon,
 	HistoryIcon,
@@ -200,11 +202,11 @@ export function ChatSidebar({
 		ChatAttachmentDraft[]
 	>([])
 	const [selectedModel, setSelectedModel] = useState<ModelId>(
-		initialSelectedModel ?? "claude-sonnet-4.6",
+		initialSelectedModel ?? "grok-4.3",
 	)
 	const [reasoningEffort, setReasoningEffort] = useState<ReasoningEffort>(
 		initialReasoningEffort ??
-			getDefaultReasoningEffort(initialSelectedModel ?? "claude-sonnet-4.6"),
+			getDefaultReasoningEffort(initialSelectedModel ?? "grok-4.3"),
 	)
 	const selectedModelRef = useRef(selectedModel)
 	selectedModelRef.current = selectedModel
@@ -351,9 +353,18 @@ export function ChatSidebar({
 					const sendSettings = pendingSendSettingsRef.current
 					pendingSendSettingsRef.current = null
 
+					// Tool parts (incl. Anthropic server-side web search) don't round-trip
+					// through convertToModelMessages and cause tool_use/tool_result mismatches.
+					const sanitizedMessages = messages.map((m) => ({
+						...m,
+						parts: (m.parts ?? []).filter(
+							(p) => !p.type.startsWith("tool-") && p.type !== "dynamic-tool",
+						),
+					}))
+
 					return {
 						body: {
-							messages,
+							messages: sanitizedMessages,
 							metadata: {
 								chatId: chatIdRef.current,
 								projectId: selectedProjectRef.current,
@@ -1063,11 +1074,14 @@ export function ChatSidebar({
 						}) => ({
 							id: m.id,
 							role: m.role,
-							// Strip tool parts — persisted format doesn't round-trip through
-							// convertToModelMessages correctly and causes tool_use/tool_result
-							// mismatch errors. Text history is sufficient for context.
+							// Strip tool parts (they break convertToModelMessages with tool_use/tool_result
+							// mismatches); keep text/reasoning + source parts so citations survive reload.
 							parts: (m.parts || []).filter(
-								(p) => p.type === "text" || p.type === "reasoning",
+								(p) =>
+									p.type === "text" ||
+									p.type === "reasoning" ||
+									p.type === "source-url" ||
+									p.type === "source-document",
 							),
 							metadata: m.metadata,
 							createdAt: new Date(m.createdAt),
@@ -1469,6 +1483,24 @@ export function ChatSidebar({
 	const isStackedInput = layout === "page"
 	const showHeaderRow = !isPageDesktop || isMobile || !isStackedInput
 	const isResponding = status === "submitted" || status === "streaming"
+	const isWebSearching =
+		isResponding &&
+		(() => {
+			const last = messages[messages.length - 1]
+			if (!last || last.role !== "assistant") return false
+			const parts = last.parts ?? []
+			const searching = parts.some(
+				(p) =>
+					(p.type === "dynamic-tool" &&
+						isWebSearchToolName((p as { toolName?: string }).toolName ?? "")) ||
+					(p.type.startsWith("tool-") &&
+						isWebSearchToolName(p.type.slice("tool-".length))),
+			)
+			const hasText = parts.some(
+				(p) => p.type === "text" && (p as { text?: string }).text?.trim(),
+			)
+			return searching && !hasText
+		})()
 	const hasBusyAttachment = attachmentDrafts.some(
 		(attachment) =>
 			attachment.status === "uploading" || attachment.status === "queued",
@@ -1748,6 +1780,16 @@ export function ChatSidebar({
 					)}
 				>
 					<div className="mr-2 flex min-w-0 flex-1 items-center gap-2">
+						{isMobile && (
+							<button
+								type="button"
+								onClick={() => _setIsChatOpen(false)}
+								aria-label="Back"
+								className="flex size-9 shrink-0 cursor-pointer items-center justify-center rounded-full border border-[#161F2C] bg-black text-[#FAFAFA] transition-colors hover:bg-[#161F2C]"
+							>
+								<ArrowLeftIcon className="size-5" />
+							</button>
+						)}
 						{!isStackedInput && (
 							<>
 								<ChatModelSelector
@@ -1801,9 +1843,8 @@ export function ChatSidebar({
 						className={
 							messages.length > 0
 								? cn(
-										"flex flex-col space-y-3 min-h-full justify-end",
+										"flex flex-col space-y-3 min-h-full justify-end pb-4",
 										isPageDesktop || isMobile ? "pt-2" : "pt-14",
-										isStackedInput && "px-4",
 									)
 								: ""
 						}
@@ -1851,11 +1892,6 @@ export function ChatSidebar({
 								)}
 							</div>
 						))}
-						{(status === "submitted" || status === "streaming") && (
-							<div className="flex gap-2">
-								<SuperLoader label="Thinking…" />
-							</div>
-						)}
 					</div>
 				</div>
 
@@ -1878,8 +1914,7 @@ export function ChatSidebar({
 				<div
 					role="alert"
 					className={cn(
-						"mb-2 rounded-lg bg-amber-950/40 px-3 py-2 text-sm text-amber-50/95",
-						isPageDesktop ? "mx-0" : "mx-4",
+						"mx-4 mb-2 rounded-lg bg-amber-950/40 px-3 py-2 text-sm text-amber-50/95",
 						dmSansClassName(),
 					)}
 				>
@@ -1931,7 +1966,7 @@ export function ChatSidebar({
 					"shrink-0",
 					isStackedInput &&
 						(isMobile
-							? "px-4 pb-2"
+							? "px-4 pb-[max(0.5rem,env(safe-area-inset-bottom))]"
 							: "px-4 pb-[max(1.25rem,calc(env(safe-area-inset-bottom)+1rem))] md:pb-6"),
 				)}
 			>
@@ -1953,11 +1988,13 @@ export function ChatSidebar({
 					activeStatus={
 						isResponding && isQueueFull
 							? `Queue full (${CHAT_QUEUE_LIMIT} max)`
-							: status === "submitted"
-								? "Thinking…"
-								: status === "streaming"
-									? "Structuring response…"
-									: "Waiting for input…"
+							: isWebSearching
+								? "Searching the web…"
+								: status === "submitted"
+									? "Thinking…"
+									: status === "streaming"
+										? "Thinking…"
+										: "Waiting for input…"
 					}
 					queuedMessages={messageQueue}
 					showStatusStrip={showInputStatusStrip}
@@ -1967,25 +2004,31 @@ export function ChatSidebar({
 					}
 					stackedToolbar={
 						isStackedInput ? (
-							<>
-								<ChatModelSelector
-									selectedModel={selectedModel}
-									onModelChange={handleModelChange}
-									minimal
-								/>
-								<ReasoningSelector
-									value={reasoningEffort}
-									onChange={setReasoningEffort}
-								/>
-								<SpaceSelector
-									selectedProjects={chatSpaceProjects}
-									onValueChange={setChatSpaceProjects}
-									variant="insideOut"
-									includeAuto
-									hideCount
-									triggerClassName="h-auto min-h-0 max-w-[min(160px,35vw)] rounded-full border border-[#161F2C] bg-[#000000] px-3 py-1.5 shadow-none hover:bg-[#05080D]"
-								/>
-							</>
+							<ChatModelSelector
+								selectedModel={selectedModel}
+								onModelChange={handleModelChange}
+								minimal
+							/>
+						) : undefined
+					}
+					toolbarTrailing={
+						isStackedInput ? (
+							<ReasoningSelector
+								value={reasoningEffort}
+								onChange={setReasoningEffort}
+							/>
+						) : undefined
+					}
+					toolbarEnd={
+						isStackedInput ? (
+							<SpaceSelector
+								selectedProjects={chatSpaceProjects}
+								onValueChange={setChatSpaceProjects}
+								variant="insideOut"
+								includeAuto
+								hideCount
+								triggerClassName="h-auto min-h-0 max-w-[min(160px,35vw)] gap-1.5 rounded-md border-0 bg-transparent px-2 py-1 shadow-none hover:bg-white/5"
+							/>
 						) : undefined
 					}
 				/>
diff --git a/apps/web/components/chat/input/index.tsx b/apps/web/components/chat/input/index.tsx
index a2293a78..d655d657 100644
--- a/apps/web/components/chat/input/index.tsx
+++ b/apps/web/components/chat/input/index.tsx
@@ -12,6 +12,7 @@ import {
 } from "lucide-react"
 import { Dialog, DialogContent, DialogTitle } from "@repo/ui/components/dialog"
 import NovaOrb from "@/components/nova/nova-orb"
+import { SuperLoader } from "@/components/superloader"
 import { cn } from "@lib/utils"
 import { dmSansClassName } from "@/lib/fonts"
 import { type ReactNode, useEffect, useRef, useState } from "react"
@@ -46,6 +47,10 @@ interface ChatInputProps {
 	onExpandedChange?: (expanded: boolean) => void
 	/** Model + space controls on one row with send; textarea full-width above */
 	stackedToolbar?: ReactNode
+	/** Trailing controls rendered after the attach button (e.g. reasoning) */
+	toolbarTrailing?: ReactNode
+	/** Controls rendered just left of the send button (e.g. space selector) */
+	toolbarEnd?: ReactNode
 	/** Nova status row + chain-of-thought toggle (off for e.g. home composer) */
 	showStatusStrip?: boolean
 	attachments?: ChatAttachmentDraft[]
@@ -70,6 +75,8 @@ export default function ChatInput({
 	chainOfThoughtComponent,
 	onExpandedChange,
 	stackedToolbar,
+	toolbarTrailing,
+	toolbarEnd,
 	showStatusStrip = true,
 	attachments = [],
 	onAddAttachmentFiles,
@@ -184,7 +191,7 @@ export default function ChatInput({
 				type="button"
 				onClick={() => fileInputRef.current?.click()}
 				disabled={isResponding}
-				className="flex size-8 shrink-0 cursor-pointer items-center justify-center rounded-lg border border-[#242832] bg-black text-[#A6B0BE] transition-colors hover:border-[#3A4049] hover:bg-[#111418] hover:text-white disabled:cursor-not-allowed disabled:opacity-50"
+				className="flex size-8 shrink-0 cursor-pointer items-center justify-center rounded-md text-white/45 transition-colors hover:bg-white/5 hover:text-white/80 disabled:cursor-not-allowed disabled:opacity-50"
 				aria-label="Attach files"
 				title="Attach files"
 			>
@@ -204,7 +211,7 @@ export default function ChatInput({
 			className={cn("relative z-20!")}
 			animate={{
 				padding: showStatusStrip ? (isExpanded ? "16px" : "0") : "0",
-				margin: showStatusStrip ? (isExpanded ? "0" : "16px") : "0",
+				margin: "0",
 				borderRadius: showStatusStrip
 					? isExpanded
 						? "0 0 12px 12px"
@@ -251,10 +258,16 @@ export default function ChatInput({
 						disabled={!chainOfThoughtComponent}
 					>
 						<div className="flex items-center gap-3">
-							<NovaOrb size={24} className="blur-[1px]! z-10" />
-							<p className={cn("text-[#525D6E]", dmSansClassName())}>
-								{activeStatus || "Waiting for input..."}
-							</p>
+							{isResponding ? (
+								<SuperLoader label={activeStatus || "Thinking…"} />
+							) : (
+								<>
+									<NovaOrb size={24} className="blur-[1px]! z-10" />
+									<p className={cn("text-[#525D6E]", dmSansClassName())}>
+										{activeStatus || "Waiting for input..."}
+									</p>
+								</>
+							)}
 						</div>
 						{chainOfThoughtComponent && (
 							<ChevronUpIcon
@@ -334,11 +347,13 @@ export default function ChatInput({
 						rows={1}
 					/>
 					<div className="flex items-center gap-2">
-						{attachmentButton}
-						<div className="flex min-w-0 flex-1 items-center gap-2">
+						<div className="flex min-w-0 flex-1 items-center gap-1.5">
 							{stackedToolbar}
+							{attachmentButton}
+							{toolbarTrailing}
 						</div>
 						<div className="flex shrink-0 items-center gap-1.5">
+							{toolbarEnd}
 							{isResponding && <StopButton onClick={onStop} />}
 							{(!isResponding || canSubmit) && (
 								<SendButton
diff --git a/apps/web/components/chat/message/agent-message.tsx b/apps/web/components/chat/message/agent-message.tsx
index c1666f38..1b7f69a8 100644
--- a/apps/web/components/chat/message/agent-message.tsx
+++ b/apps/web/components/chat/message/agent-message.tsx
@@ -1,6 +1,6 @@
 "use client"
 
-import { useState } from "react"
+import { type ReactNode, useEffect, useMemo, useRef, useState } from "react"
 import type { UIMessage } from "@ai-sdk/react"
 import { Streamdown } from "streamdown"
 import {
@@ -52,48 +52,205 @@ type SourceUrlPart = {
 	title?: string
 }
 
-function WebSourcesGroup({ sources }: { sources: SourceUrlPart[] }) {
+function sourceHost(url: string): string {
+	try {
+		return new URL(url).hostname.replace(/^www\./, "")
+	} catch {
+		return url
+	}
+}
+
+function faviconUrl(host: string): string {
+	return `https://www.google.com/s2/favicons?sz=64&domain=${host}`
+}
+
+function isWebSearchPart(part: { type: string; toolName?: string }): boolean {
+	if (part.type === "dynamic-tool") {
+		return isWebSearchToolName(part.toolName ?? "")
+	}
+	if (part.type.startsWith("tool-")) {
+		return isWebSearchToolName(part.type.slice("tool-".length))
+	}
+	return false
+}
+
+function CitationLink({
+	href,
+	label,
+	source,
+}: {
+	href: string
+	label: string
+	source?: SourceUrlPart
+}) {
+	const url = source?.url ?? href
+	const host = sourceHost(url)
+	const rawTitle = source?.title?.trim()
+	const hasTitle =
+		!!rawTitle && rawTitle !== host && !/^https?:\/\//i.test(rawTitle)
+	let path = ""
+	try {
+		path = new URL(url).pathname.replace(/\/$/, "")
+	} catch {}
+	return (
+		<span className="group/cite relative inline">
+			<a
+				href={url}
+				target="_blank"
+				rel="noopener noreferrer"
+				className="text-blue-400 no-underline hover:text-blue-300"
+			>
+				{label}
+			</a>
+			<span className="pointer-events-none absolute bottom-full left-1/2 z-[1000] hidden -translate-x-1/2 pb-1.5 group-hover/cite:block">
+				<a
+					href={url}
+					target="_blank"
+					rel="noopener noreferrer"
+					className="pointer-events-auto block w-64 overflow-hidden rounded-lg border border-white/10 bg-[#0B0F16]/95 p-2.5 no-underline shadow-[0_12px_32px_rgba(0,0,0,0.4)] backdrop-blur-xl"
+				>
+					<span className="flex items-center gap-2">
+						<img
+							src={faviconUrl(host)}
+							alt=""
+							className="size-4 shrink-0 rounded bg-white/10"
+							loading="lazy"
+							referrerPolicy="no-referrer"
+						/>
+						<span className="truncate text-xs font-medium text-white/85">
+							{host}
+						</span>
+					</span>
+					{hasTitle ? (
+						<span className="mt-1.5 block line-clamp-2 text-xs leading-snug text-white/60">
+							{rawTitle}
+						</span>
+					) : path ? (
+						<span className="mt-1 block truncate text-[11px] text-white/35">
+							{path}
+						</span>
+					) : null}
+				</a>
+			</span>
+		</span>
+	)
+}
+
+function makeMarkdownComponents(sources: SourceUrlPart[]) {
+	return {
+		a: ({ href, children }: { href?: string; children?: ReactNode }) => {
+			const label =
+				typeof children === "string"
+					? children
+					: Array.isArray(children)
+						? children.join("")
+						: ""
+			const match = label.match(/^\[?(\d+)\]?$/)
+			if (match && href) {
+				const n = Number(match[1])
+				const source = sources.find((s) => s.url === href) ?? sources[n - 1]
+				return <CitationLink href={href} label={label} source={source} />
+			}
+			return (
+				<a
+					href={href}
+					target="_blank"
+					rel="noopener noreferrer"
+					className="text-blue-400 hover:underline"
+				>
+					{children}
+				</a>
+			)
+		},
+	}
+}
+
+function WebSourcesPill({ sources }: { sources: SourceUrlPart[] }) {
 	const [expanded, setExpanded] = useState(false)
+	const ref = useRef<HTMLDivElement>(null)
+
+	useEffect(() => {
+		if (!expanded) return
+		const onDown = (e: MouseEvent) => {
+			if (ref.current && !ref.current.contains(e.target as Node)) {
+				setExpanded(false)
+			}
+		}
+		document.addEventListener("mousedown", onDown)
+		return () => document.removeEventListener("mousedown", onDown)
+	}, [expanded])
+
 	if (sources.length === 0) return null
 
+	const faviconHosts: string[] = []
+	for (const s of sources) {
+		const host = sourceHost(s.url)
+		if (!faviconHosts.includes(host)) faviconHosts.push(host)
+		if (faviconHosts.length >= 3) break
+	}
+	const count = sources.length
+
 	return (
-		<div className="rounded-lg border border-[#1E2128] bg-[#0D121A] text-xs my-1 overflow-hidden">
+		<div ref={ref} className="relative">
 			<button
 				type="button"
-				onClick={() => setExpanded(!expanded)}
-				className={cn(
-					"flex items-center gap-2 w-full px-3 py-2 cursor-pointer hover:bg-[#141922] transition-colors",
-					expanded && "border-b border-[#1E2128]",
-				)}
+				onClick={() => setExpanded((v) => !v)}
+				className="flex cursor-pointer items-center gap-1.5 rounded-full border border-white/10 bg-white/[0.04] py-1 pr-2.5 pl-1.5 text-xs text-white/65 transition-colors hover:bg-white/[0.08] hover:text-white/80"
+				aria-expanded={expanded}
+				aria-label={`${count} web ${count === 1 ? "source" : "sources"}`}
 			>
-				<GlobeIcon className="size-3 shrink-0 text-emerald-400" />
-				<span className="font-medium text-emerald-400">
-					Web sources
-					<span className="text-white/40 font-normal ml-1">
-						({sources.length})
-					</span>
+				<span className="flex -space-x-1.5">
+					{faviconHosts.length > 0 ? (
+						faviconHosts.map((host) => (
+							<img
+								key={host}
+								src={faviconUrl(host)}
+								alt=""
+								className="size-4 rounded-full border border-[#0B0F16] bg-white/10 object-cover"
+								loading="lazy"
+								referrerPolicy="no-referrer"
+							/>
+						))
+					) : (
+						<GlobeIcon className="size-3.5 text-emerald-400" />
+					)}
 				</span>
-				{expanded ? (
-					<ChevronDownIcon className="size-3 text-white/30 shrink-0 ml-auto" />
-				) : (
-					<ChevronRightIcon className="size-3 text-white/30 shrink-0 ml-auto" />
-				)}
+				<span>{count === 1 ? "1 source" : `${count} sources`}</span>
 			</button>
 			{expanded && (
-				<ul className="px-3 py-2 space-y-1.5 list-none">
-					{sources.map((s) => (
-						<li key={s.sourceId}>
-							<a
-								href={s.url}
-								target="_blank"
-								rel="noopener noreferrer"
-								className="text-blue-400 hover:underline break-all"
-							>
-								{s.title?.trim() || s.url}
-							</a>
-						</li>
-					))}
-				</ul>
+				<div className="absolute bottom-full left-0 z-[1000] mb-2 w-[min(22rem,calc(100vw-2rem))] overflow-hidden rounded-xl border border-white/10 bg-[#0B0F16]/95 p-1.5 shadow-[0_12px_32px_rgba(0,0,0,0.4)] backdrop-blur-xl">
+					<ul className="max-h-72 list-none space-y-0.5 overflow-y-auto">
+						{sources.map((s) => {
+							const host = sourceHost(s.url)
+							return (
+								<li key={s.sourceId}>
+									<a
+										href={s.url}
+										target="_blank"
+										rel="noopener noreferrer"
+										className="flex items-start gap-2 rounded-lg px-2 py-1.5 transition-colors hover:bg-white/[0.06]"
+									>
+										<img
+											src={faviconUrl(host)}
+											alt=""
+											className="mt-0.5 size-4 shrink-0 rounded-full bg-white/10"
+											loading="lazy"
+											referrerPolicy="no-referrer"
+										/>
+										<span className="min-w-0">
+											<span className="block truncate text-white/80">
+												{s.title?.trim() || host}
+											</span>
+											<span className="block truncate text-[11px] text-white/40">
+												{host}
+											</span>
+										</span>
+									</a>
+								</li>
+							)
+						})}
+					</ul>
+				</div>
 			)}
 		</div>
 	)
@@ -210,6 +367,23 @@ function ToolCallDisplay({ part }: { part: ToolCallDisplayPart }) {
 	if (toolName === "bash") {
 		return <BashToolDisplay part={part} />
 	}
+	if (isWebSearchToolName(toolName)) {
+		if (part.state === "output-available") return null
+		if (part.state === "error" || part.state === "output-error") {
+			return (
+				<div className="my-1 flex items-center gap-2 text-xs text-red-400/80">
+					<GlobeIcon className="size-3.5 shrink-0" />
+					<span>Web search failed</span>
+				</div>
+			)
+		}
+		return (
+			<div className="my-1 flex items-center gap-2 text-xs text-white/50">
+				<Loader2 className="size-3.5 shrink-0 animate-spin text-emerald-400/80" />
+				<span>Searching the web…</span>
+			</div>
+		)
+	}
 	const meta =
 		TOOL_META[toolName] ??
 		(isWebSearchToolName(toolName)
@@ -342,6 +516,27 @@ export function AgentMessage({
 		.filter((part) => part.type === "text")
 		.map((part) => part.text)
 		.join(" ")
+	const webSources = (() => {
+		const seen = new Set<string>()
+		const out: SourceUrlPart[] = []
+		for (const part of message.parts) {
+			if (part.type !== "source-url") continue
+			const source = part as SourceUrlPart
+			if (seen.has(source.url)) continue
+			seen.add(source.url)
+			out.push(source)
+		}
+		return out
+	})()
+	const hasAssistantText = message.parts.some(
+		(p) => p.type === "text" && (p as { text?: string }).text?.trim(),
+	)
+	const sourceKey = webSources.map((s) => s.url).join("|")
+	// biome-ignore lint/correctness/useExhaustiveDependencies: keyed by stable source urls
+	const markdownComponents = useMemo(
+		() => makeMarkdownComponents(webSources),
+		[sourceKey],
+	)
 	const responseModelLabel = responseModel
 		? `${modelNames[responseModel].name} ${modelNames[responseModel].version}`
 		: null
@@ -358,24 +553,10 @@ export function AgentMessage({
 
 					{message.parts.map((part, partIndex) => {
 						if (part.type === "source-url") {
-							if (
-								partIndex > 0 &&
-								message.parts[partIndex - 1]?.type === "source-url"
-							) {
-								return null
-							}
-							const sources: SourceUrlPart[] = []
-							for (let j = partIndex; j < message.parts.length; j++) {
-								const p = message.parts[j]
-								if (!p || p.type !== "source-url") break
-								sources.push(p as SourceUrlPart)
-							}
-							return (
-								<WebSourcesGroup
-									key={`${message.id}-web-sources-${partIndex}`}
-									sources={sources}
-								/>
-							)
+							return null
+						}
+						if (isWebSearchPart(part)) {
+							return null
 						}
 						if (part.type === "source-document") {
 							const doc = part as {
@@ -400,12 +581,30 @@ export function AgentMessage({
 							)
 						}
 						if (part.type === "text") {
+							// Skip fragments mid-run — source-url citations split one answer into
+							// many text parts; rendering each separately tears markdown (lists etc.).
+							let prev = partIndex - 1
+							while (prev >= 0 && message.parts[prev]?.type === "source-url") {
+								prev--
+							}
+							if (prev >= 0 && message.parts[prev]?.type === "text") {
+								return null
+							}
+							let runText = ""
+							for (let j = partIndex; j < message.parts.length; j++) {
+								const p = message.parts[j]
+								if (p?.type === "text") runText += p.text
+								else if (p?.type === "source-url") continue
+								else break
+							}
 							return (
 								<div
 									key={`${message.id}-${partIndex}`}
 									className="text-sm text-white/90 chat-markdown-content"
 								>
-									<Streamdown>{part.text}</Streamdown>
+									<Streamdown components={markdownComponents}>
+										{runText}
+									</Streamdown>
 								</div>
 							)
 						}
@@ -448,29 +647,41 @@ export function AgentMessage({
 					})}
 				</div>
 			</div>
-			<div className="flex min-h-7 items-center gap-2">
-				<MessageActions
-					messageId={message.id}
-					messageText={messageText}
-					isLastMessage={isLastAgentMessage}
-					isHovered={isHovered}
-					copiedMessageId={copiedMessageId}
-					messageFeedback={messageFeedback}
-					onCopy={onCopy}
-					onLike={onLike}
-					onDislike={onDislike}
-				/>
-				{responseModelLabel && (
-					<span
-						className={cn(
-							"text-[10px] leading-none text-white/25 transition-opacity duration-200",
-							isHovered ? "opacity-100" : "opacity-0",
-						)}
-					>
-						{responseModelLabel}
-					</span>
-				)}
-			</div>
+			{hasAssistantText && (
+				<div className="flex min-h-7 items-center gap-2">
+					<MessageActions
+						messageId={message.id}
+						messageText={messageText}
+						isLastMessage={isLastAgentMessage}
+						isHovered={isHovered}
+						copiedMessageId={copiedMessageId}
+						messageFeedback={messageFeedback}
+						onCopy={onCopy}
+						onLike={onLike}
+						onDislike={onDislike}
+					/>
+					{webSources.length > 0 && (
+						<div
+							className={cn(
+								"transition-opacity duration-200",
+								isHovered || isLastAgentMessage ? "opacity-100" : "opacity-0",
+							)}
+						>
+							<WebSourcesPill sources={webSources} />
+						</div>
+					)}
+					{responseModelLabel && (
+						<span
+							className={cn(
+								"text-[10px] leading-none text-white/25 transition-opacity duration-200",
+								isHovered ? "opacity-100" : "opacity-0",
+							)}
+						>
+							{responseModelLabel}
+						</span>
+					)}
+				</div>
+			)}
 		</div>
 	)
 }
diff --git a/apps/web/components/chat/model-selector.tsx b/apps/web/components/chat/model-selector.tsx
index 65208ca5..ca9935ee 100644
--- a/apps/web/components/chat/model-selector.tsx
+++ b/apps/web/components/chat/model-selector.tsx
@@ -1,6 +1,7 @@
 "use client"
 
 import { useEffect, useRef, useState } from "react"
+import { AnimatePresence, motion } from "motion/react"
 import { cn } from "@lib/utils"
 import { Button } from "@ui/components/button"
 import { dmSansClassName } from "@/lib/fonts"
@@ -44,8 +45,7 @@ export default function ChatModelSelector({
 	const selectedModel = selectedModelProp ?? internalModel
 	const currentModelData = modelNames[selectedModel]
 	const selectedModelLabel = `${currentModelData.name} ${currentModelData.version}`
-	const selectedItemClass =
-		"border border-[#267BF1]/35 bg-[#0A1A3A] text-white shadow-[inset_0_0_0_1px_rgba(75,160,250,0.08)]"
+	const selectedItemClass = "bg-white/[0.06] text-white"
 
 	const handleModelSelect = (modelId: ModelId) => {
 		if (onModelChange) {
@@ -61,18 +61,23 @@ export default function ChatModelSelector({
 		<button
 			type="button"
 			className={cn(
-				"flex max-w-[min(100%,220px)] min-w-0 shrink cursor-pointer items-center gap-1.5 rounded-full border border-white/15 bg-black px-3 py-1.5 text-[13px] text-white transition-colors hover:border-white/30 hover:bg-white/5",
+				"flex max-w-[min(100%,220px)] min-w-0 shrink cursor-pointer items-center gap-1 rounded-md px-2 py-1 text-[13px] text-white/80 transition-colors hover:bg-white/5",
 				dmSansClassName(),
 			)}
 			onClick={() => setIsOpen(!isOpen)}
 			aria-expanded={isOpen}
 			aria-label={`Model: ${selectedModelLabel}`}
 		>
-			<p className="min-w-0 truncate text-left text-white">
+			<p className="min-w-0 truncate text-left text-white/80">
 				{currentModelData.name}{" "}
-				<span className="text-white/55">{currentModelData.version}</span>
+				<span className="text-white/40">{currentModelData.version}</span>
 			</p>
-			<ChevronDownIcon className="size-3.5 shrink-0 text-white/55" />
+			<ChevronDownIcon
+				className={cn(
+					"size-3.5 shrink-0 text-white/40 transition-transform duration-200",
+					isOpen && "rotate-180",
+				)}
+			/>
 		</button>
 	) : (
 		<Button
@@ -89,7 +94,12 @@ export default function ChatModelSelector({
 				{currentModelData.name}{" "}
 				<span className="text-white/55">{currentModelData.version}</span>
 			</p>
-			<ChevronDownIcon className="size-4 text-white/55" />
+			<ChevronDownIcon
+				className={cn(
+					"size-4 text-white/55 transition-transform duration-200",
+					isOpen && "rotate-180",
+				)}
+			/>
 		</Button>
 	)
 
@@ -103,66 +113,82 @@ export default function ChatModelSelector({
 		>
 			{trigger}
 
-			{isOpen && (
-				<div
-					className={cn(
-						"isolate absolute left-0 z-[1000] w-[min(18rem,calc(100vw-2rem))] overflow-hidden rounded-xl border border-white/15 bg-black p-1 shadow-[0_18px_48px_rgba(0,0,0,0.55)]",
-						dropdownDirection === "up" ? "bottom-full mb-2" : "top-full mt-2",
-					)}
-				>
-					<div className="space-y-1">
-						{models.map((model) => {
-							const modelData = modelNames[model.id]
-							const isSelected = selectedModel === model.id
-							return (
-								<button
-									key={model.id}
-									type="button"
-									className={cn(
-										"flex w-full cursor-pointer items-center gap-3 rounded-lg border border-transparent px-3 py-2.5 text-left transition-colors",
-										isSelected
-											? selectedItemClass
-											: "text-white hover:bg-white/10",
-									)}
-									onClick={() => handleModelSelect(model.id)}
-									onKeyDown={(e) =>
-										e.key === "Enter" && handleModelSelect(model.id)
-									}
-								>
-									<div className="min-w-0 flex-1">
-										<div
-											className={cn(
-												"truncate text-sm font-medium",
-												isSelected ? "text-white" : "text-white",
-											)}
-										>
-											{modelData.name}{" "}
-											<span
+			<AnimatePresence>
+				{isOpen && (
+					<motion.div
+						initial={{
+							opacity: 0,
+							scale: 0.96,
+							y: dropdownDirection === "up" ? 6 : -6,
+						}}
+						animate={{ opacity: 1, scale: 1, y: 0 }}
+						exit={{
+							opacity: 0,
+							scale: 0.96,
+							y: dropdownDirection === "up" ? 6 : -6,
+						}}
+						transition={{ duration: 0.16, ease: [0.16, 1, 0.3, 1] }}
+						className={cn(
+							"isolate absolute left-0 z-[1000] w-[min(18rem,calc(100vw-2rem))] overflow-hidden rounded-xl border border-white/10 bg-[#0B0F16]/95 p-1.5 shadow-[0_12px_32px_rgba(0,0,0,0.4)] backdrop-blur-xl",
+							dropdownDirection === "up"
+								? "bottom-full mb-2 origin-bottom"
+								: "top-full mt-2 origin-top",
+						)}
+					>
+						<div className="space-y-1">
+							{models.map((model) => {
+								const modelData = modelNames[model.id]
+								const isSelected = selectedModel === model.id
+								return (
+									<button
+										key={model.id}
+										type="button"
+										className={cn(
+											"flex w-full cursor-pointer items-center gap-3 rounded-lg px-2.5 py-2 text-left transition-colors",
+											isSelected
+												? selectedItemClass
+												: "text-white hover:bg-white/[0.06]",
+										)}
+										onClick={() => handleModelSelect(model.id)}
+										onKeyDown={(e) =>
+											e.key === "Enter" && handleModelSelect(model.id)
+										}
+									>
+										<div className="min-w-0 flex-1">
+											<div
 												className={cn(
-													isSelected ? "text-[#8DBDFF]" : "text-white/55",
+													"truncate text-sm font-medium",
+													isSelected ? "text-white" : "text-white",
 												)}
 											>
-												{modelData.version}
-											</span>
+												{modelData.name}{" "}
+												<span
+													className={cn(
+														isSelected ? "text-[#8DBDFF]" : "text-white/40",
+													)}
+												>
+													{modelData.version}
+												</span>
+											</div>
+											<div
+												className={cn(
+													"mt-0.5 truncate text-xs",
+													isSelected ? "text-white/50" : "text-white/40",
+												)}
+											>
+												{model.description}
+											</div>
 										</div>
-										<div
-											className={cn(
-												"mt-0.5 truncate text-xs",
-												isSelected ? "text-white/60" : "text-white/45",
-											)}
-										>
-											{model.description}
-										</div>
-									</div>
-									{isSelected && (
-										<CheckIcon className="size-4 shrink-0 text-[#8DBDFF]" />
-									)}
-								</button>
-							)
-						})}
-					</div>
-				</div>
-			)}
+										{isSelected && (
+											<CheckIcon className="size-4 shrink-0 text-[#8DBDFF]" />
+										)}
+									</button>
+								)
+							})}
+						</div>
+					</motion.div>
+				)}
+			</AnimatePresence>
 		</div>
 	)
 }
diff --git a/apps/web/components/chat/reasoning-selector.tsx b/apps/web/components/chat/reasoning-selector.tsx
index a02fc4fa..c0ceb227 100644
--- a/apps/web/components/chat/reasoning-selector.tsx
+++ b/apps/web/components/chat/reasoning-selector.tsx
@@ -1,13 +1,7 @@
 "use client"
 
-import { useEffect, useRef, useState } from "react"
-import {
-	BrainIcon,
-	CheckIcon,
-	ChevronDownIcon,
-	MoreHorizontalIcon,
-	ZapIcon,
-} from "lucide-react"
+import { AnimatePresence, motion } from "motion/react"
+import { BrainIcon, ZapIcon } from "lucide-react"
 import { cn } from "@lib/utils"
 import { dmSansClassName } from "@/lib/fonts"
 import { reasoningOptions, type ReasoningEffort } from "@/lib/models"
@@ -20,124 +14,60 @@ interface ReasoningSelectorProps {
 	dropdownDirection?: "up" | "down"
 }
 
+const iconVariants = {
+	initial: (toThinking: boolean) => ({
+		y: toThinking ? "-110%" : "110%",
+		opacity: 0,
+	}),
+	animate: { y: "0%", opacity: 1 },
+	exit: (toThinking: boolean) => ({
+		y: toThinking ? "110%" : "-110%",
+		opacity: 0,
+	}),
+}
+
 export function ReasoningSelector({
 	value,
 	onChange,
-	variant = "pill",
 	disabled = false,
-	dropdownDirection = "up",
 }: ReasoningSelectorProps) {
-	const [isOpen, setIsOpen] = useState(false)
-	const containerRef = useRef<HTMLDivElement>(null)
-	const selected = reasoningOptions.find((option) => option.id === value)
-	const SelectedIcon = value === "thinking" ? BrainIcon : ZapIcon
-	const selectedLabel = selected?.label ?? "Reasoning"
-	const selectedItemClass =
-		"border border-[#267BF1]/35 bg-[#0A1A3A] text-white shadow-[inset_0_0_0_1px_rgba(75,160,250,0.08)]"
-
-	useEffect(() => {
-		if (!isOpen) return
-		const handleClickOutside = (event: MouseEvent) => {
-			if (
-				containerRef.current &&
-				!containerRef.current.contains(event.target as Node)
-			) {
-				setIsOpen(false)
-			}
-		}
-		document.addEventListener("mousedown", handleClickOutside)
-		return () => document.removeEventListener("mousedown", handleClickOutside)
-	}, [isOpen])
-
-	const handleSelect = (next: ReasoningEffort) => {
-		onChange(next)
-		setIsOpen(false)
-	}
+	const toThinking = value === "thinking"
+	const Icon = toThinking ? BrainIcon : ZapIcon
+	const selectedLabel =
+		reasoningOptions.find((option) => option.id === value)?.label ?? "Reasoning"
+	const nextValue: ReasoningEffort = toThinking ? "instant" : "thinking"
 
 	return (
-		<div
-			ref={containerRef}
+		<button
+			type="button"
+			disabled={disabled}
+			onClick={() => onChange(nextValue)}
 			className={cn(
-				"relative flex shrink-0 items-center",
-				isOpen ? "z-[1000]" : "z-10",
+				"group flex shrink-0 cursor-pointer items-center rounded-md px-1.5 py-1 text-xs text-white/80 transition-colors hover:bg-white/5 disabled:cursor-not-allowed disabled:opacity-50",
+				dmSansClassName(),
 			)}
+			title={`Reasoning: ${selectedLabel} — click to switch`}
+			aria-label={`Reasoning: ${selectedLabel}. Click to switch.`}
 		>
-			<button
-				type="button"
-				disabled={disabled}
-				onClick={() => setIsOpen((open) => !open)}
-				className={cn(
-					"cursor-pointer transition-colors disabled:cursor-not-allowed disabled:opacity-50",
-					variant === "icon"
-						? "rounded p-1.5 hover:bg-white/10"
-						: "flex size-9 items-center justify-center gap-1.5 rounded-full border border-white/15 bg-black px-0 py-1.5 text-xs text-white hover:border-white/30 hover:bg-white/5 sm:size-auto sm:justify-start sm:px-2.5",
-					dmSansClassName(),
-				)}
-				title={`Reasoning: ${selectedLabel}`}
-				aria-label={`Reasoning: ${selectedLabel}`}
-				aria-expanded={isOpen}
-			>
-				{variant === "icon" ? (
-					<MoreHorizontalIcon className="size-3.5 text-white/50 hover:text-white/80" />
-				) : (
-					<>
-						<SelectedIcon className="size-3.5 shrink-0 text-white/65" />
-						<span className="hidden text-white sm:inline">
-							{selected?.label}
-						</span>
-						<ChevronDownIcon className="hidden size-3.5 shrink-0 text-white/55 sm:block" />
-					</>
-				)}
-			</button>
-
-			{isOpen && (
-				<div
-					className={cn(
-						"isolate absolute left-0 z-[1000] w-[min(14rem,calc(100vw-2rem))] overflow-hidden rounded-xl border border-white/15 bg-black p-1 shadow-[0_18px_48px_rgba(0,0,0,0.55)]",
-						dropdownDirection === "up" ? "bottom-full mb-2" : "top-full mt-2",
-					)}
-				>
-					<div className="space-y-1">
-						{reasoningOptions.map((option) => {
-							const Icon = option.id === "thinking" ? BrainIcon : ZapIcon
-							const isSelected = option.id === value
-							return (
-								<button
-									key={option.id}
-									type="button"
-									onClick={() => handleSelect(option.id)}
-									className={cn(
-										"flex w-full cursor-pointer items-center gap-2.5 rounded-lg border border-transparent px-3 py-2.5 text-left transition-colors",
-										isSelected
-											? selectedItemClass
-											: "text-white hover:bg-white/10",
-									)}
-								>
-									<Icon
-										className={cn(
-											"size-4 shrink-0",
-											isSelected ? "text-[#8DBDFF]" : "text-white/65",
-										)}
-									/>
-									<div className="min-w-0 flex-1">
-										<div
-											className={cn(
-												"text-sm font-medium",
-												isSelected ? "text-white" : "text-white",
-											)}
-										>
-											{option.label}
-										</div>
-									</div>
-									{isSelected && (
-										<CheckIcon className="size-4 shrink-0 text-[#8DBDFF]" />
-									)}
-								</button>
-							)
-						})}
-					</div>
-				</div>
-			)}
-		</div>
+			<span className="relative flex size-3.5 shrink-0 items-center justify-center overflow-hidden">
+				<AnimatePresence initial={false} mode="popLayout" custom={toThinking}>
+					<motion.span
+						key={value}
+						custom={toThinking}
+						variants={iconVariants}
+						initial="initial"
+						animate="animate"
+						exit="exit"
+						transition={{ duration: 0.2, ease: [0.16, 1, 0.3, 1] }}
+						className="absolute inset-0 flex items-center justify-center"
+					>
+						<Icon className="size-3.5 text-white/45 transition-colors group-hover:text-white/70" />
+					</motion.span>
+				</AnimatePresence>
+			</span>
+			<span className="ml-0 max-w-0 overflow-hidden whitespace-nowrap opacity-0 transition-all duration-200 group-hover:ml-1 group-hover:max-w-[88px] group-hover:opacity-100">
+				{selectedLabel}
+			</span>
+		</button>
 	)
 }
diff --git a/apps/web/components/select-spaces-modal.tsx b/apps/web/components/select-spaces-modal.tsx
index 528a2f86..7198d435 100644
--- a/apps/web/components/select-spaces-modal.tsx
+++ b/apps/web/components/select-spaces-modal.tsx
@@ -3,7 +3,7 @@
 import { useState, useMemo, useEffect, useCallback, useRef } from "react"
 import Image from "next/image"
 import { dmSans125ClassName, dmSansClassName } from "@/lib/fonts"
-import { Dialog, DialogContent } from "@repo/ui/components/dialog"
+import { Dialog, DialogContent, DialogTitle } from "@repo/ui/components/dialog"
 import { Drawer, DrawerContent, DrawerTitle } from "@repo/ui/components/drawer"
 import { cn } from "@lib/utils"
 import { useIsMobile } from "@hooks/use-mobile"
@@ -1128,14 +1128,14 @@ export function SelectSpacesModal({
 			>
 				<div className="flex items-start justify-between gap-4 px-4 pt-4">
 					<div className="pl-1 space-y-1 flex-1">
-						<p
+						<DialogTitle
 							className={cn(
 								"font-semibold text-[#fafafa]",
 								dmSans125ClassName(),
 							)}
 						>
 							Select Space
-						</p>
+						</DialogTitle>
 						<p className="text-[#737373] font-medium text-[14px] leading-[1.35]">
 							{isBulkDeleteMode
 								? "Choose spaces to permanently delete"
diff --git a/apps/web/components/superloader.tsx b/apps/web/components/superloader.tsx
index 5cac100f..2c40152f 100644
--- a/apps/web/components/superloader.tsx
+++ b/apps/web/components/superloader.tsx
@@ -47,7 +47,7 @@ export function SuperLoader({
 		<output
 			aria-label={label}
 			className={`inline-flex flex-row items-center gap-2 ${className}`}
-			style={{ width: size + 10 }}
+			style={{ minWidth: size + 10 }}
 		>
 			<motion.svg
 				xmlns="http://www.w3.org/2000/svg"
@@ -87,7 +87,7 @@ export function SuperLoader({
 			</motion.svg>
 
 			<span
-				className="text-xs font-medium text-slate-500"
+				className="whitespace-nowrap text-xs font-medium text-slate-500"
 				style={{ fontSize: size * 0.25 }}
 			>
 				{label}
diff --git a/apps/web/globals.css b/apps/web/globals.css
index 9ab81965..ecacedf5 100644
--- a/apps/web/globals.css
+++ b/apps/web/globals.css
@@ -190,6 +190,16 @@
 	padding-left: 0.25rem;
 }
 
+/* Loose lists wrap item content in <p> whose top margin detaches the bullet */
+.chat-markdown-content li > p:first-child {
+	margin-top: 0;
+}
+
+/* Model spams `---` between every section; headings already separate them */
+.chat-markdown-content hr {
+	display: none;
+}
+
 .shadow-inside-out {
 	box-shadow:
 		inset 0 2px 4px rgba(0, 0, 0, 0.3),
diff --git a/apps/web/hooks/use-document-mutations.ts b/apps/web/hooks/use-document-mutations.ts
index bc048415..05d9680b 100644
--- a/apps/web/hooks/use-document-mutations.ts
+++ b/apps/web/hooks/use-document-mutations.ts
@@ -7,28 +7,25 @@ import {
 } from "@tanstack/react-query"
 import { toast } from "sonner"
 import { $fetch } from "@lib/api"
-import type { DocumentsWithMemoriesResponseSchema } from "@repo/validation/api"
-import type { z } from "zod"
 import { useAuth } from "@lib/auth-context"
 import { analytics } from "@/lib/analytics"
 
-type DocumentsResponse = z.infer<typeof DocumentsWithMemoriesResponseSchema>
+/** Pull the human-readable message out of a $fetch error (handles `{error}`/`{message}`/string). */
+function fetchErrorMessage(err: unknown, fallback: string): string {
+	if (typeof err === "string") return err
+	if (err && typeof err === "object") {
+		const e = err as { error?: unknown; message?: unknown }
+		if (typeof e.error === "string") return e.error
+		if (typeof e.message === "string") return e.message
+	}
+	return fallback
+}
 
 interface DocumentWithId {
 	id?: string
 	customId?: string | null
 }
 
-interface DocumentsQueryData {
-	documents: DocumentWithId[]
-	totalCount: number
-}
-
-type InfiniteQueryData = {
-	pages: DocumentsResponse[]
-	pageParams: number[]
-}
-
 interface UseDocumentMutationsOptions {
 	onClose?: () => void
 }
@@ -566,7 +563,9 @@ export function useDocumentMutations({
 			})
 
 			if (response.error) {
-				throw new Error(response.error?.message || "Failed to delete document")
+				throw new Error(
+					fetchErrorMessage(response.error, "Failed to delete document"),
+				)
 			}
 
 			return response.data
@@ -606,7 +605,9 @@ export function useDocumentMutations({
 			})
 
 			if (response.error) {
-				throw new Error(response.error?.message || "Failed to delete documents")
+				throw new Error(
+					fetchErrorMessage(response.error, "Failed to delete documents"),
+				)
 			}
 
 			return response.data
diff --git a/apps/web/lib/models.tsx b/apps/web/lib/models.tsx
index c704ddad..5d3479ef 100644
--- a/apps/web/lib/models.tsx
+++ b/apps/web/lib/models.tsx
@@ -1,4 +1,9 @@
 export const models = [
+	{
+		id: "grok-4.3",
+		name: "Grok 4.3",
+		description: "xAI's latest model",
+	},
 	{
 		id: "gpt-5.1",
 		name: "GPT 5.1",
@@ -20,6 +25,7 @@ export type ModelId = (typeof models)[number]["id"]
 export type ReasoningEffort = "instant" | "thinking"
 
 export const modelNames: Record<ModelId, { name: string; version: string }> = {
+	"grok-4.3": { name: "Grok", version: "4.3" },
 	"gpt-5.1": { name: "GPT", version: "5.1" },
 	"claude-sonnet-4.6": { name: "Claude", version: "4.6" },
 	"gemini-2.5-pro": { name: "Gemini", version: "3 Pro" },