feat: add Habboon, Leet and Hubbly furni import sources

Add verified retro-hotel sources to the studio furni clone list. All
endpoints (furnidata JSON, .nitro bundles, icons, SWF) were probed and
verified reachable (HTTP 200), and Leet/Hubbly nitro bundles parse with
parseNitroBundle.

Also allow source-specific SWF downloads without a revision path segment
(/hof_furni/{classname}.swf), which Leet and Habboon use.

src/lib/services/furni-import.ts

@@ -689,6 +689,11 @@ export async function importSingleFurni(params: {
 		swfUrls.push(
 			`${sourceSwfBaseUrl}/hof_furni/${rev}/${encodeURIComponent(safeSwfName)}.swf`,
 		);
+		// Some retros (e.g. Leet, Habboon) serve SWFs without a revision
+		// segment: /hof_furni/{classname}.swf
+		swfUrls.push(
+			`${sourceSwfBaseUrl}/hof_furni/${encodeURIComponent(safeSwfName)}.swf`,
+		);
 	}
 
 	// Official Habbo CDN fallbacks