Improve HK sidebar and restore nested content scrolling

src/components/admin/admin-mobile-wrapper.tsx

@@ -42,11 +42,11 @@ export function AdminMobileWrapper({
 	return (
 		<AdminMobileContext.Provider value={mobile}>
 			{/* Wider than public max-w-7xl (80rem), capped so it never goes full-bleed. */}
-			<div className="min-h-screen bg-[var(--admin-canvas)]">
-				<div className="mx-auto flex min-h-screen w-full max-w-full min-w-0 flex-col lg:max-w-[96rem] lg:flex-row lg:border-x lg:shadow-xl border-[var(--admin-border)]">
+			<div className="h-dvh overflow-hidden bg-[var(--admin-canvas)]">
+				<div className="mx-auto flex h-full min-h-0 w-full max-w-full min-w-0 flex-col lg:max-w-[96rem] lg:flex-row lg:border-x lg:shadow-xl border-[var(--admin-border)]">
 					{/* Mobile header */}
 					<div
-						className={`lg:hidden sticky top-0 flex items-center gap-3 px-4 py-3 border-b ${
+						className={`lg:hidden shrink-0 flex items-center gap-3 px-4 py-3 border-b ${
 							open ? "z-30" : "z-50"
 						}`}
 						style={{
@@ -84,7 +84,7 @@ export function AdminMobileWrapper({
 
 					{/* Sidebar */}
 					<div
-						className={`fixed inset-y-0 left-0 z-50 flex h-full w-[260px] flex-col overflow-hidden lg:!relative lg:!min-h-screen lg:!translate-x-0 ${
+						className={`fixed inset-y-0 left-0 z-50 flex h-full w-[260px] flex-col overflow-hidden lg:!relative lg:shrink-0 lg:!translate-x-0 ${
 							open ? "translate-x-0" : "-translate-x-full"
 						}`}
 						style={{ transition: "transform 300ms ease-in-out" }}
@@ -93,7 +93,12 @@ export function AdminMobileWrapper({
 					</div>
 
 					{/* Content */}
-					<div className="flex flex-col flex-1 min-w-0">{children}</div>
+					<div
+						data-admin-content
+						className="min-h-0 min-w-0 flex-1 overflow-auto overscroll-contain"
+					>
+						{children}
+					</div>
 				</div>
 			</div>
 		</AdminMobileContext.Provider>