UI improvements: Leadspeicher, Maps enrichment, exports

- Rename LeadVault → Leadspeicher throughout (sidebar, topbar, page)
- SidePanel: full lead detail view with contact, source, tags (read-only), Google Maps link for address
- Tags: kontaktiert stored as tag (toggleable), favorit tag toggle
- Remove Status column, StatusBadge dropdown, Priority feature
- Remove Aktualisieren button from Leadspeicher
- Bulk actions: remove status dropdown
- Export: LeadVault Excel-only, clean columns, freeze row + autofilter
- Export dropdown: click-based (fix overflow-hidden clipping)
- ExportButtons: remove CSV, Excel only everywhere
- Maps page: post-search Anymailfinder enrichment button
- ProgressCard: "Suche läuft..." instead of "Warte auf Anymailfinder-Server..."
- Quick SERP renamed to "Schnell neue Suche"
- Results page: Excel export, always-enabled download button
- Anymailfinder: fix bulk field names, array-of-arrays format
- Apify: fix countryCode lowercase
- API: sourceTerm search, contacted/favorite tag filters

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

components/shared/ProgressCard.tsx

@@ -33,7 +33,7 @@ export function ProgressCard({ title, current, total, subtitle, status = "runnin
                 <span className="inline-block w-1.5 h-1.5 rounded-full bg-blue-400 animate-bounce" style={{ animationDelay: "0ms" }} />
                 <span className="inline-block w-1.5 h-1.5 rounded-full bg-blue-400 animate-bounce" style={{ animationDelay: "150ms" }} />
                 <span className="inline-block w-1.5 h-1.5 rounded-full bg-blue-400 animate-bounce" style={{ animationDelay: "300ms" }} />
-                <span className="text-blue-300 ml-1">Warte auf Anymailfinder-Server...</span>
+                <span className="text-blue-300 ml-1">Suche läuft...</span>
               </span>
               <span className="text-gray-600">{total} Domains</span>
             </>