docs+ui: note languages.ts requirement; default export to current lang + catalog only

Author: martinPavesio

src/components/ExportDropdown.tsx

@@ -19,8 +19,8 @@ const googleEnabled = Boolean(import.meta.env.VITE_GOOGLE_CLIENT_ID)
 export function ExportDropdown({ currentLang, packages, scanned, generated, indexUrl }: Props) {
   const { customerId } = useCustomer()
   const [open, setOpen] = useState(false)
-  const [scope, setScope] = useState<'current' | 'all'>('all')
-  const [detail, setDetail] = useState<ExportDetail>('summary')
+  const [scope, setScope] = useState<'current' | 'all'>('current')
+  const [detail, setDetail] = useState<ExportDetail>('catalog')
   const [downloading, setDownloading] = useState(false)
   const [sheetsState, setSheetsState] = useState<'idle' | 'uploading' | 'error'>('idle')
   const wrapRef = useRef<HTMLDivElement>(null)

src/languages.ts

@@ -8,6 +8,8 @@ export interface Language {
 }
 
 const base = import.meta.env.BASE_URL
+// All languages must be listed here, even if disabled. The export feature
+// iterates this array to find which languages have data for the current POV.
 export const LANGUAGES: Language[] = [
   { id: 'python',     label: 'Python',     icon: `${base}icons/python.svg`,     hasIndexUrl: true,  scanTool: 'pip-audit · OSV'   },
   { id: 'javascript', label: 'JavaScript', icon: `${base}icons/javascript.svg`, hasIndexUrl: false, scanTool: 'osv-scanner · OSV' },