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>

app/serp/page.tsx

@@ -122,14 +122,9 @@ export default function SerpPage() {
     contact_name: r.contactName,
     contact_title: r.contactTitle,
     email: r.email,
-    confidence_score: r.confidence !== undefined ? Math.round(r.confidence * 100) : undefined,
-    source_tab: "serp",
-    job_id: jobId || "",
-    found_at: new Date().toISOString(),
   }));
 
   const emailsFound = results.filter(r => r.email).length;
-  const hitRate = results.length > 0 ? Math.round((emailsFound / results.length) * 100) : 0;
 
   return (
     <div className="space-y-6 max-w-5xl">
@@ -292,7 +287,7 @@ export default function SerpPage() {
             title="Pipeline abgeschlossen"
             current={emailsFound}
             total={results.length}
-            subtitle={`Trefferquote: ${hitRate}% · ${results.length} Domains`}
+            subtitle={`${emailsFound} E-Mails gefunden · ${results.length} Domains`}
             status="complete"
           />
         )}
@@ -306,7 +301,7 @@ export default function SerpPage() {
             <ExportButtons
               rows={exportRows}
               filename={`serp-leads-${jobId?.slice(0, 8) || "export"}`}
-              summary={`${emailsFound} E-Mails gefunden • ${hitRate}% Trefferquote`}
+              summary={`${emailsFound} E-Mails gefunden`}
             />
           </div>
           <ResultsTable rows={results} loading={stage === "running" && results.length === 0} />