fix(web): disable AI chat on the EU instance

apps/web/src/components/chat/global-chat-sheet.tsx

@@ -2,6 +2,7 @@ import { lazy, Suspense, useState } from "react"
 import { useMountEffect } from "@/hooks/use-mount-effect"
 import { useMapleOrganizationId } from "@/hooks/use-maple-organization"
 import { isDialogOpen, isEditableTarget } from "@maple/ui/lib/keyboard"
+import { aiChatEnabled } from "@/lib/region"
 
 const OPEN_CHAT_EVENT = "maple:open-chat-sheet"
 
@@ -35,6 +36,10 @@ export function openGlobalChat() {
  * history restores from the durable stream on reopen, same as AlertChatSheet.
  */
 export function GlobalChatSheet() {
+	return aiChatEnabled ? <GlobalChatSheetInner /> : null
+}
+
+function GlobalChatSheetInner() {
 	const [open, setOpen] = useState(false)
 	const orgId = useMapleOrganizationId()
 

apps/web/src/components/command-palette/command-palette.tsx

@@ -27,6 +27,7 @@ import {
 } from "@/components/icons"
 import { isClerkAuthEnabled } from "@/lib/services/common/auth-mode"
 import { openGlobalChat } from "@/components/chat/global-chat-sheet"
+import { aiChatEnabled } from "@/lib/region"
 import { paletteNavItems } from "@/components/dashboard/nav-items"
 import { useDashboardPreferences } from "@/hooks/use-dashboard-preferences"
 import { useDashboardsRead } from "@/hooks/use-dashboard-store"
@@ -197,15 +198,19 @@ function PaletteContent({
 
 		const isDark = theme === "dark"
 		const actions: PaletteEntry[] = [
-			{
-				id: "action:ask-maple-ai",
-				title: "Ask Maple AI",
-				group: "Actions",
-				keywords: "chat ai assistant maple ask question",
-				icon: ChatBubbleSparkleIcon,
-				run: openGlobalChat,
-				shortcut: "C",
-			},
+			...(aiChatEnabled
+				? [
+						{
+							id: "action:ask-maple-ai",
+							title: "Ask Maple AI",
+							group: "Actions",
+							keywords: "chat ai assistant maple ask question",
+							icon: ChatBubbleSparkleIcon,
+							run: openGlobalChat,
+							shortcut: "C",
+						} satisfies PaletteEntry,
+					]
+				: []),
 			{
 				id: "action:toggle-theme",
 				title: isDark ? "Switch to light mode" : "Switch to dark mode",

apps/web/src/components/dashboard-builder/widgets/widget-actions-context.tsx

@@ -9,6 +9,7 @@ import {
 	type WidgetFixContext,
 } from "@/components/chat/widget-fix-context"
 import { encodeAlertChartToSearchParam } from "@/lib/alerts/widget-chart-param"
+import { aiChatEnabled } from "@/lib/region"
 import { dataSourceRawSql, isQueryDataSource } from "@maple/widgets/dashboard"
 import { Result, useAtomValue } from "@/lib/effect-atom"
 import { dashboardSharesAtom } from "@/components/dashboard-builder/toolbar/dashboard-shares"
@@ -147,7 +148,7 @@ export function WidgetActionsProvider({
 				: undefined
 
 		const fix =
-			dashboardId && errorKind === "decode"
+			aiChatEnabled && dashboardId && errorKind === "decode"
 				? () => {
 						const ctx: WidgetFixContext = {
 							dashboardId,

apps/web/src/components/layout/dashboard-layout.tsx

@@ -17,6 +17,7 @@ import { Tooltip, TooltipContent, TooltipTrigger } from "@maple/ui/components/ui
 import { Kbd } from "@maple/ui/components/ui/kbd"
 import { ChatBubbleSparkleIcon, LayoutLeftIcon, LayoutRightIcon } from "@/components/icons"
 import { openGlobalChat } from "@/components/chat/global-chat-sheet"
+import { aiChatEnabled } from "@/lib/region"
 import { ConnectButton } from "@/components/header/connect-button"
 import { OnboardingChecklistButton } from "@/components/header/onboarding-checklist-button"
 import { QuotaBanner } from "@/components/billing/quota-banner"
@@ -112,23 +113,25 @@ function Breadcrumbs({ items, children }: { items: BreadcrumbEntry[]; children?:
 				</BreadcrumbList>
 			</Breadcrumb>
 			<div className="ml-auto flex shrink-0 items-center gap-2">
-				<Tooltip>
-					<TooltipTrigger
-						render={
-							<Button
-								variant="outline"
-								size="icon-sm"
-								aria-label="Open AI chat"
-								onClick={openGlobalChat}
-							/>
-						}
-					>
-						<ChatBubbleSparkleIcon size={16} />
-					</TooltipTrigger>
-					<TooltipContent className="flex items-center gap-1.5">
-						Ask Maple AI <Kbd>C</Kbd>
-					</TooltipContent>
-				</Tooltip>
+				{aiChatEnabled && (
+					<Tooltip>
+						<TooltipTrigger
+							render={
+								<Button
+									variant="outline"
+									size="icon-sm"
+									aria-label="Open AI chat"
+									onClick={openGlobalChat}
+								/>
+							}
+						>
+							<ChatBubbleSparkleIcon size={16} />
+						</TooltipTrigger>
+						<TooltipContent className="flex items-center gap-1.5">
+							Ask Maple AI <Kbd>C</Kbd>
+						</TooltipContent>
+					</Tooltip>
+				)}
 				<OnboardingChecklistButton />
 				<ConnectButton />
 				{/* Self-gating: renders only when the sidebar has collapsed to a sheet *and* a

apps/web/src/lib/region.ts

@@ -22,3 +22,6 @@ export function regionAppUrl(region: MapleRegion): string | undefined {
 
 /** Whether this deployment has more than one region, and so whether regions are worth showing. */
 export const hasMultipleRegions = Object.keys(regionAppUrls).length > 1
+
+/** Maple AI chat is off on the EU instance for now; every chat entry point checks this. */
+export const aiChatEnabled = currentRegion !== "eu"

apps/web/src/routes/chat.tsx

@@ -1,6 +1,7 @@
-import { createFileRoute } from "@tanstack/react-router"
+import { createFileRoute, redirect } from "@tanstack/react-router"
 import { Schema } from "effect"
 import { ChatPage } from "@/components/chat/chat-page"
+import { aiChatEnabled } from "@/lib/region"
 import { decodeAlertContextFromSearchParam } from "@/components/chat/alert-context"
 import {
 	alertContextToInvestigation,
@@ -29,6 +30,9 @@ const ChatSearch = Schema.Struct({
 export const Route = createFileRoute("/chat")({
 	component: ChatRoute,
 	validateSearch: Schema.toStandardSchemaV1(ChatSearch),
+	beforeLoad: () => {
+		if (!aiChatEnabled) throw redirect({ to: "/" })
+	},
 })
 
 function ChatRoute() {