feat(web): move Virtual displays to its own nav section; roomier preset grid

The Host page was crowded (identity, codecs, ports, GPU, displays, compositors) and the
virtual-display config surface is large enough to warrant its own home.

- New **Virtual displays** nav section: `/displays` route + `sections/Displays` (moved
  DisplayCard out of `sections/Host`), a `MonitorPlay` sidebar entry after Host, and
  `nav_displays` i18n. Removed the displays card from the Host page/view.
- On its own page the card splits into two: **Configuration** (presets + custom axes) and
  **Live displays** (the live list + arrangement table) — room to breathe.
- Presets now render in a max-2-column grid (`sm:grid-cols-2`) with larger padding, a bigger
  section heading + preset titles (text-base semibold), roomier spacing, and bottom-aligned
  "what it sets" badges so the cards line up.

web tsc + vite build + biome-lint green; deployed + verified on the Mutter box (.21).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web/messages/de.json

@@ -4,6 +4,7 @@
 	"app_tagline": "Verwaltungskonsole",
 	"nav_dashboard": "Übersicht",
 	"nav_host": "Host",
+	"nav_displays": "Virtuelle Anzeigen",
 	"nav_clients": "Gekoppelte Geräte",
 	"nav_pairing": "Kopplung",
 	"nav_library": "Bibliothek",
@@ -49,6 +50,7 @@
 	"gpu_env_note": "PUNKTFUNK_RENDER_ADAPTER={value} bindet die GPU im Automatikmodus.",
 	"host_displays": "Virtuelle Displays",
 	"host_displays_help": "Wie virtuelle Displays erstellt, aktiv gehalten und angeordnet werden. Wähle eine Voreinstellung oder „Benutzerdefiniert“, um Optionen direkt zu setzen. Eine Änderung gilt ab der nächsten Sitzung.",
+	"display_config_title": "Konfiguration",
 	"display_preset": "Voreinstellung",
 	"display_preset_custom": "Benutzerdefiniert",
 	"display_preset_default": "Standard",

web/messages/en.json

@@ -4,6 +4,7 @@
 	"app_tagline": "management console",
 	"nav_dashboard": "Dashboard",
 	"nav_host": "Host",
+	"nav_displays": "Virtual displays",
 	"nav_clients": "Paired clients",
 	"nav_pairing": "Pairing",
 	"nav_library": "Library",
@@ -49,6 +50,7 @@
 	"gpu_env_note": "PUNKTFUNK_RENDER_ADAPTER={value} pins the GPU while in automatic mode.",
 	"host_displays": "Virtual displays",
 	"host_displays_help": "How virtual displays are created, kept alive, and arranged. Pick a preset, or choose Custom to set options directly. A change applies to the next session.",
+	"display_config_title": "Configuration",
 	"display_preset": "Preset",
 	"display_preset_custom": "Custom",
 	"display_preset_default": "Default",

web/src/components/app-shell.tsx

@@ -4,6 +4,7 @@ import {
 	GaugeCircle,
 	KeyRound,
 	LibraryBig,
+	MonitorPlay,
 	ScrollText,
 	Server,
 	Settings,
@@ -21,6 +22,7 @@ const MLink = motion(Link);
 const NAV = [
 	{ to: "/", icon: Activity, label: () => m.nav_dashboard() },
 	{ to: "/host", icon: Server, label: () => m.nav_host() },
+	{ to: "/displays", icon: MonitorPlay, label: () => m.nav_displays() },
 	{ to: "/library", icon: LibraryBig, label: () => m.nav_library() },
 	{ to: "/stats", icon: GaugeCircle, label: () => m.nav_stats() },
 	{ to: "/logs", icon: ScrollText, label: () => m.nav_logs() },

web/src/routes/displays.tsx

@@ -0,0 +1,4 @@
+import { createFileRoute } from "@tanstack/react-router";
+import { SectionDisplays } from "@/sections/Displays";
+
+export const Route = createFileRoute("/displays")({ component: SectionDisplays });

web/src/sections/Displays/DisplayCard.tsx

@@ -60,9 +60,10 @@ export const DisplaySection: FC = () => {
 		);
 
 	return (
+		<div className="flex flex-col gap-card">
 			<Card>
 				<CardHeader>
-				<CardTitle>{m.host_displays()}</CardTitle>
+					<CardTitle>{m.display_config_title()}</CardTitle>
 				</CardHeader>
 				<CardContent className="space-y-4">
 					<p className="text-sm text-muted-foreground">{m.host_displays_help()}</p>
@@ -78,9 +79,17 @@ export const DisplaySection: FC = () => {
 							/>
 						)}
 					</QueryState>
+				</CardContent>
+			</Card>
+			<Card>
+				<CardHeader>
+					<CardTitle>{m.display_live()}</CardTitle>
+				</CardHeader>
+				<CardContent>
 					<LiveDisplays />
 				</CardContent>
 			</Card>
+		</div>
 	);
 };
 
@@ -142,10 +151,10 @@ const DisplayForm: FC<{
 
 	return (
 		<div className="space-y-4">
-			{/* One-click presets */}
+			{/* One-click presets — a 2-up grid so each has room to breathe */}
-			<div className="space-y-2">
+			<div className="space-y-3">
-				<Label>{m.display_preset()}</Label>
+				<Label className="text-base font-semibold">{m.display_preset()}</Label>
-				<div className="grid gap-2">
+				<div className="grid gap-3 sm:grid-cols-2">
 					{PRESET_ORDER.map((id) => {
 						const p = presets.find((x) => x.id === id);
 						const fields = id === "custom" ? undefined : p?.fields;
@@ -153,8 +162,10 @@ const DisplayForm: FC<{
 						const selected = preset === id;
 						const soon = DISABLED_PRESETS.has(id);
 						const cls = [
-							"w-full rounded-md border p-3 text-left transition-colors",
+							"flex h-full flex-col rounded-lg border p-4 text-left transition-colors",
-							selected ? "border-primary ring-1 ring-primary" : "hover:bg-muted/50",
+							selected
+								? "border-primary ring-1 ring-primary"
+								: "hover:border-primary/40 hover:bg-muted/50",
 							soon ? "opacity-60" : "",
 						].join(" ");
 						return (
@@ -166,7 +177,7 @@ const DisplayForm: FC<{
 								className={cls}
 							>
 								<div className="flex items-center justify-between gap-2">
-									<span className="text-sm font-medium">
+									<span className="text-base font-semibold">
 										{(PRESET_LABEL[id] ?? (() => id))()}
 										{soon && (
 											<span className="ml-2 text-xs font-normal text-muted-foreground">
@@ -178,9 +189,11 @@ const DisplayForm: FC<{
 										<Badge variant="success">{m.display_preset_current()}</Badge>
 									)}
 								</div>
-								{summary && <p className="mt-0.5 text-xs text-muted-foreground">{summary}</p>}
+								{summary && (
+									<p className="mt-1 text-sm text-muted-foreground">{summary}</p>
+								)}
 								{fields && (
-									<div className="mt-1.5 flex flex-wrap gap-1">
+									<div className="mt-auto flex flex-wrap gap-1.5 pt-3">
 										<Badge variant="secondary">{fmtKeepAlive(fields.keep_alive)}</Badge>
 										<Badge variant="secondary">{tr(TOPOLOGY_LABEL, fields.topology)}</Badge>
 										<Badge variant="outline">{tr(CONFLICT_LABEL, fields.mode_conflict)}</Badge>
@@ -361,10 +374,9 @@ const LiveDisplays: FC = () => {
 		);
 
 	return (
-		<div className="space-y-2 border-t pt-4">
+		<div className="space-y-3">
-			<div className="flex items-center justify-between gap-4">
-				<h4 className="text-sm font-medium">{m.display_live()}</h4>
 			{kept.length > 0 && (
+				<div className="flex justify-end">
 					<Button
 						size="sm"
 						variant="outline"
@@ -373,8 +385,8 @@ const LiveDisplays: FC = () => {
 					>
 						{m.display_release_all()}
 					</Button>
-				)}
 				</div>
+			)}
 			{displays.length === 0 ? (
 				<p className="text-sm text-muted-foreground">{m.display_none_live()}</p>
 			) : (

web/src/sections/Displays/index.tsx

@@ -0,0 +1,22 @@
+import Section from "@unom/ui/section";
+import type { FC } from "react";
+import { useLocale } from "@/lib/i18n";
+import { m } from "@/paraglide/messages";
+import { DisplaySection } from "./DisplayCard";
+
+/**
+ * The **Virtual displays** page (design/display-management.md): the host's virtual-display policy
+ * (presets + every axis) plus the live-display list + multi-monitor arrangement. Its own nav
+ * section — the config surface is large enough to warrant the room, and it kept the Host page busy.
+ */
+export const SectionDisplays: FC = () => {
+	useLocale();
+	return (
+		<Section maxWidth={false}>
+			<div className="flex flex-col gap-card">
+				<h1 className="text-2xl font-semibold">{m.nav_displays()}</h1>
+				<DisplaySection />
+			</div>
+		</Section>
+	);
+};

web/src/sections/Host/index.tsx

@@ -1,7 +1,6 @@
 import type { FC } from "react";
 import { useGetHostInfo, useListCompositors } from "@/api/gen/host/host";
 import { useLocale } from "@/lib/i18n";
-import { DisplaySection } from "./DisplayCard";
 import { GpuSection } from "./GpuCard";
 import { HostView } from "./view";
 
@@ -10,12 +9,5 @@ export const SectionHost: FC = () => {
 	const host = useGetHostInfo();
 	const compositors = useListCompositors();
 
-	return (
+	return <HostView host={host} compositors={compositors} gpu={<GpuSection />} />;
-		<HostView
-			host={host}
-			compositors={compositors}
-			gpu={<GpuSection />}
-			displays={<DisplaySection />}
-		/>
-	);
 };

web/src/sections/Host/view.tsx

@@ -13,9 +13,7 @@ export const HostView: FC<{
 	compositors: Loadable<AvailableCompositor[]>;
 	/** The GPU inventory/selection card (a self-contained container — see `GpuCard.tsx`). */
 	gpu?: ReactNode;
-	/** The virtual-display management card (self-contained container — see `DisplayCard.tsx`). */
+}> = ({ host, compositors, gpu }) => {
-	displays?: ReactNode;
-}> = ({ host, compositors, gpu, displays }) => {
 	const h = host.data;
 	return (
 		<Section maxWidth={false}>
@@ -83,8 +81,6 @@ export const HostView: FC<{
 
 				{gpu}
 
-				{displays}
-
 				<Card>
 					<CardHeader>
 						<CardTitle>{m.host_compositors()}</CardTitle>