feat(catalog): prevent and repair Arcturus emulator data errors

Block invalid catalog_items writes at the API level (points currency
allowlist, non-negative prices, positive amount, limited stack >= sold
count, unique sibling order numbers) and auto-assign unique order numbers
on bulk create. Add a catalog-maintenance scan + transactional repair that
fixes pre-existing rows: resets unsupported points_type, clamps negative
costs, sets amount to 1, raises limited_stack, renumbers duplicate orders
and deletes offers with missing page/item references. Surface the issue
count and a fix button in the admin maintenance panel.

Also: add enabled/retired flag to clone sources, classify poster and
currency furniture in item-kind, and remove the obsolete update-Nitrov3.sh.

src/lib/services/item-kind.ts

@@ -10,6 +10,12 @@
  *   assets live in the pet asset pipeline (`public/nitro-assets/bundled/pet`),
  *   not the furniture bundle dirs.
  * - **effect / bot / sticky** — system items with no furniture visuals at all.
+ * - **poster** — poster furniture (`poster*` classnames, wall posters, novelty
+ *   poster furni). Renders through the poster imager, so no `.nitro` / `_icon.png`
+ *   assets are expected.
+ * - **currency** — credit/pixel furniture (`CF_*`, `DF_*`). Renders through the
+ *   currency imager (credits coin, badge-format exchange stickers), so no
+ *   `.nitro` / `_icon.png` assets are expected.
  * - **furni** — everything else; must ship a `.nitro` and `_icon.png`.
  */
 
@@ -19,6 +25,8 @@ export type CatalogItemKind =
 	| "effect"
 	| "bot"
 	| "sticky"
+	| "poster"
+	| "currency"
 	| "furni";
 
 export interface CatalogItemLike {
@@ -42,6 +50,24 @@ export function isPetInteraction(interactionType?: string | null): boolean {
 	return /^pet\d+$/i.test((interactionType ?? "").trim());
 }
 
+/** Poster furniture classnames that have no `.nitro` asset expectations. */
+export function isPosterClassname(itemName: string): boolean {
+	const name = itemName.trim();
+	if (/^poster\d+$/i.test(name)) return true;
+	const POSTER_SPECIAL = new Set([
+		"funtastic_four_poster",
+		"duckfountain",
+		"duckfountain2",
+		"swimming",
+	]);
+	return POSTER_SPECIAL.has(name.toLowerCase());
+}
+
+/** Credit/pixel furniture (`CF_*`, `DF_*`) ships no `.nitro` assets. */
+export function isCurrencyClassname(itemName: string): boolean {
+	return /^(?:cf|df)_/i.test(itemName.trim());
+}
+
 /** Classify an `items_base` row into a catalog item kind. */
 export function classifyCatalogItem(item: CatalogItemLike): CatalogItemKind {
 	const name = item.item_name.trim();
@@ -52,6 +78,8 @@ export function classifyCatalogItem(item: CatalogItemLike): CatalogItemKind {
 	if (/^avatar_effect/i.test(name)) return "effect";
 	if (/^(bot_|rentable_bot_)/i.test(name)) return "bot";
 	if (/^post[._]?it/i.test(name)) return "sticky";
+	if (isPosterClassname(name)) return "poster";
+	if (isCurrencyClassname(name)) return "currency";
 	return "furni";
 }
 
@@ -62,6 +90,8 @@ export const NO_ASSET_KINDS: ReadonlySet<CatalogItemKind> = new Set([
 	"effect",
 	"bot",
 	"sticky",
+	"poster",
+	"currency",
 ]);
 
 /** Kinds that are not purchasable furniture and should not get catalog entries. */