Add hover-reveal edit button to widget cards + auto-open edit mode

Each widget card now shows a settings icon in the top-right corner on
hover (desktop) or always-visible (mobile via mobile-touch-target).
Clicking it opens the WidgetConfigDialog directly in edit mode for that
widget (via a new editWidgetId prop on WidgetConfigDialog that
auto-enters the draft-edit path via useEffect).

Wired across all three widget surfaces:
- Dashboard (both mobile section + desktop grid)
- Service OverviewTab
- NamedDashboardPage

128 tests pass; build/lint green.

frontend/src/components/WidgetConfigDialog.tsx

@@ -1,4 +1,4 @@
-import { useMemo, useState } from "react";
+import { useEffect, useMemo, useState } from "react";
 import {
 	Dialog,
 	DialogContent,
@@ -56,6 +56,8 @@ interface Props {
 	serviceId?: string;
 	/** When set, enable widget references ("Add existing") for this dashboard scope. */
 	dashboardScope?: string;
+	/** When set, auto-open in edit mode for this widget id (instead of the list view). */
+	editWidgetId?: string;
 }
 
 interface Draft {
@@ -203,6 +205,7 @@ export function WidgetConfigDialog({
 	onClose,
 	serviceId,
 	dashboardScope,
+	editWidgetId,
 }: Props) {
 	const { data: instances = [] } = useWidgetInstances(serviceId);
 	const { data: services = [] } = useServiceInstances();
@@ -220,6 +223,18 @@ export function WidgetConfigDialog({
 
 	const [draft, setDraft] = useState<Draft | null>(null);
 
+	// When editWidgetId is set and the dialog opens, auto-enter edit mode for
+	// that widget (instead of showing the list view).
+	useEffect(() => {
+		if (open && editWidgetId && instances.length > 0) {
+			const target = instances.find((w) => w.id === editWidgetId);
+			if (target) {
+				startEdit(target);
+			}
+		}
+		 
+	}, [open, editWidgetId, instances]);
+
 	function startAddBuiltIn(kind: string) {
 		const binding = BUILTIN_WIDGETS[kind];
 		setDraft({

frontend/src/components/WidgetInstance.tsx

@@ -1,4 +1,6 @@
 import { Alert, AlertDescription } from "@/components/ui/alert";
+import { Button } from "@/components/ui/button";
+import { Settings2 } from "lucide-react";
 import { useServiceInstances } from "../hooks/useServices";
 import { resolveWidget } from "../integrations/registry";
 import type { WidgetInstance } from "../types";
@@ -6,9 +8,11 @@ import { SectionCard } from "./SectionCard";
 
 interface Props {
 	widget: WidgetInstance;
+	/** When provided, a hover-reveal edit button appears in the top-right corner. */
+	onEdit?: (widgetId: string) => void;
 }
 
-export function WidgetInstanceCard({ widget }: Props) {
+export function WidgetInstanceCard({ widget, onEdit }: Props) {
 	const { data: services = [] } = useServiceInstances();
 	const resolved = resolveWidget(widget, services);
 
@@ -17,20 +21,46 @@ export function WidgetInstanceCard({ widget }: Props) {
 			? `Unknown widget: ${widget.widget_kind} (service-bound)`
 			: `Unknown widget: ${widget.widget_kind} (built-in)`;
 		return (
-			<SectionCard title={widget.title}>
-				<Alert>
-					<AlertDescription>{label}</AlertDescription>
-				</Alert>
-			</SectionCard>
+			<div className="group relative">
+				{onEdit ? (
+					<Button
+						variant="ghost"
+						size="icon-sm"
+						className="absolute right-2 top-2 z-10 opacity-0 transition-opacity group-hover:opacity-100 mobile-touch-target"
+						onClick={() => onEdit(widget.id)}
+						aria-label="Edit widget"
+					>
+						<Settings2 className="h-4 w-4" />
+					</Button>
+				) : null}
+				<SectionCard title={widget.title}>
+					<Alert>
+						<AlertDescription>{label}</AlertDescription>
+					</Alert>
+				</SectionCard>
+			</div>
 		);
 	}
 
 	const Component = resolved.component;
 	return (
-		<Component
-			widget={widget}
-			refreshIntervalMs={resolved.refreshIntervalMs}
-			description={resolved.description}
-		/>
+		<div className="group relative">
+			{onEdit ? (
+				<Button
+					variant="ghost"
+					size="icon-sm"
+					className="absolute right-2 top-2 z-10 opacity-0 transition-opacity group-hover:opacity-100 mobile-touch-target"
+					onClick={() => onEdit(widget.id)}
+					aria-label="Edit widget"
+				>
+					<Settings2 className="h-4 w-4" />
+				</Button>
+			) : null}
+			<Component
+				widget={widget}
+				refreshIntervalMs={resolved.refreshIntervalMs}
+				description={resolved.description}
+			/>
+		</div>
 	);
 }

frontend/src/pages/Dashboard.tsx

@@ -97,8 +97,10 @@ function groupWidgetsBySection(
 
 function MobileWidgetSections({
 	sections,
+	onEditWidget,
 }: {
 	sections: { id: SectionId; widgets: WidgetInstance[] }[];
+	onEditWidget?: (widgetId: string) => void;
 }) {
 	return (
 		<>
@@ -137,11 +139,11 @@ function MobileWidgetSections({
 							{SECTION_META[section.id].label}
 						</h3>
 						{section.widgets.map((widget) => (
-							<WidgetInstanceCard key={widget.id} widget={widget} />
+							<WidgetInstanceCard key={widget.id} widget={widget} onEdit={onEditWidget ? (id) => onEditWidget(id) : undefined} />
 						))}
 					</section>
 				))}
-			</div>
+				</div>
 		</>
 	);
 }
@@ -448,6 +450,7 @@ export function Dashboard() {
 	);
 	const [deleteShortcutId, setDeleteShortcutId] = useState<string | null>(null);
 	const [widgetDialogOpen, setWidgetDialogOpen] = useState(false);
+	const [editWidgetId, setEditWidgetId] = useState<string | undefined>();
 	const { data: widgetInstances = [] } = useWidgetInstances(
 		undefined,
 		"dashboard",
@@ -564,10 +567,10 @@ export function Dashboard() {
 			</SectionCard>
 
 			{isMobile && mobileSections.length > 0 ? (
-				<MobileWidgetSections sections={mobileSections} />
+				<MobileWidgetSections sections={mobileSections} onEditWidget={(id) => { setEditWidgetId(id); setWidgetDialogOpen(true); }} />
 			) : (
 				visibleWidgets.map((widget) => (
-					<WidgetInstanceCard key={widget.id} widget={widget} />
+					<WidgetInstanceCard key={widget.id} widget={widget} onEdit={(id) => { setEditWidgetId(id); setWidgetDialogOpen(true); }} />
 				))
 			)}
 
@@ -593,8 +596,9 @@ export function Dashboard() {
 			/>
 			<WidgetConfigDialog
 				open={widgetDialogOpen}
-				onClose={() => setWidgetDialogOpen(false)}
+				onClose={() => { setWidgetDialogOpen(false); setEditWidgetId(undefined); }}
 				dashboardScope="main"
+				editWidgetId={editWidgetId}
 			/>
 		</div>
 	);

frontend/src/pages/NamedDashboardPage.tsx

@@ -49,6 +49,7 @@ export function NamedDashboardPage() {
 	const dashboardScope = `named:${slug}`;
 	const { data: widgetRefs = [] } = useWidgetReferences(dashboardScope);
 	const [configOpen, setConfigOpen] = useState(false);
+	const [editWidgetId, setEditWidgetId] = useState<string | undefined>();
 
 	const items = useMemo(
 		() => parseItems(dashboard?.payload ?? {}),
@@ -96,7 +97,7 @@ export function NamedDashboardPage() {
 			{visibleWidgets.length > 0 ? (
 				<div className="grid grid-cols-1 gap-4 md:grid-cols-2">
 					{visibleWidgets.map((widget) => (
-						<WidgetInstanceCard key={widget.id} widget={widget} />
+						<WidgetInstanceCard key={widget.id} widget={widget} onEdit={(id) => { setEditWidgetId(id); setConfigOpen(true); }} />
 					))}
 				</div>
 			) : null}
@@ -124,8 +125,9 @@ export function NamedDashboardPage() {
 
 			<WidgetConfigDialog
 				open={configOpen}
-				onClose={() => setConfigOpen(false)}
+				onClose={() => { setConfigOpen(false); setEditWidgetId(undefined); }}
 				dashboardScope={dashboardScope}
+				editWidgetId={editWidgetId}
 			/>
 		</div>
 	);

frontend/src/pages/service-tabs/OverviewTab.tsx

@@ -19,6 +19,7 @@ import type { ServiceInstance } from "../../types";
 export function OverviewTab({ instance }: { instance: ServiceInstance }) {
 	const { data: widgets = [] } = useWidgetInstances(instance.id);
 	const [configOpen, setConfigOpen] = useState(false);
+	const [editWidgetId, setEditWidgetId] = useState<string | undefined>();
 
 	const visibleWidgets = useMemo(
 		() =>
@@ -48,7 +49,7 @@ export function OverviewTab({ instance }: { instance: ServiceInstance }) {
 			{visibleWidgets.length > 0 ? (
 				<div className="grid grid-cols-1 gap-4 md:grid-cols-2">
 					{visibleWidgets.map((widget) => (
-						<WidgetInstanceCard key={widget.id} widget={widget} />
+						<WidgetInstanceCard key={widget.id} widget={widget} onEdit={(id) => { setEditWidgetId(id); setConfigOpen(true); }} />
 					))}
 				</div>
 			) : (
@@ -71,8 +72,9 @@ export function OverviewTab({ instance }: { instance: ServiceInstance }) {
 
 			<WidgetConfigDialog
 				open={configOpen}
-				onClose={() => setConfigOpen(false)}
+				onClose={() => { setConfigOpen(false); setEditWidgetId(undefined); }}
 				serviceId={instance.id}
+				editWidgetId={editWidgetId}
 			/>
 		</div>
 	);