Improve catalog studio UX and aggressive docker cleanup

Catalog Studio:
- Cross-parent drag & drop now uses optimistic updates with rollback
  on failure (no more full tree reload / visible delay)
- Subpage creation adds the node optimistically then refreshes parent
  only (was full tree reload)
- Single page deletion refreshes only the affected parent (was full
  tree reload)
- Root page creation replaces native prompt() with an inline input
  in the root tab bar
- Escape key no longer closes the dialog when an input field is focused
- TreeNodeUpdate type now supports parentId and orderNum for
  optimistic structural changes

Docker:
- docker-prune.sh default mode now aggressively cleans all unreferenced
  build cache, images >1h old, and stopped containers >1h old
  (was 72h/7d/24h which let cache grow past 80% on every push)

src/components/admin/catalog-manager/catalog-manager-dialog.tsx

@@ -200,6 +200,9 @@ function CatalogManagerInner({
 		const onKey = (event: KeyboardEvent) => {
 			if (embedded || event.key !== "Escape" || event.defaultPrevented) return;
 			const target = event.target as HTMLElement;
+			// Never steal Escape from inputs/comboboxes (e.g. root name field).
+			const tag = target?.tagName;
+			if (tag === "INPUT" || tag === "TEXTAREA") return;
 			const focusedDialog = target.closest?.("[role=dialog]");
 			if (
 				focusedDialog &&
@@ -282,26 +285,26 @@ function CatalogManagerInner({
 		dispatch({ type: "SET_ACTIVE_TAB", id });
 	};
 
-	const handleCreateRoot = async () => {
-		if (!canEdit) return;
-		const caption = prompt("Root page name:");
-		if (!caption?.trim()) return;
+	const handleCreateRoot = async (caption: string): Promise<boolean> => {
+		if (!canEdit) return false;
 		try {
 			const result =
 				catalogType === "bc"
 					? await createBcPage({
 							parentId: -1,
-							caption: caption.trim(),
+							caption,
 						})
 					: await createCatalogPage({
 							parentId: -1,
-							caption: caption.trim(),
+							caption,
 						});
 			if (!result.ok) throw new Error(result.error);
 			await loadRootPages();
 			toast.success("Root page created");
+			return true;
 		} catch {
 			toast.error("Failed to create root page");
+			return false;
 		}
 	};