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/ExportButtons.tsx

@@ -1,8 +1,8 @@
 "use client";
 
 import { Button } from "@/components/ui/button";
-import { Download, FileSpreadsheet } from "lucide-react";
-import { exportToCSV, exportToExcel, type ExportRow } from "@/lib/utils/csv";
+import { FileSpreadsheet } from "lucide-react";
+import { exportToExcel, type ExportRow } from "@/lib/utils/csv";
 
 interface ExportButtonsProps {
   rows: ExportRow[];
@@ -15,15 +15,6 @@ export function ExportButtons({ rows, filename, disabled, summary }: ExportButto
   return (
     <div className="flex items-center gap-3 flex-wrap">
       {summary && <span className="text-sm text-gray-400">{summary}</span>}
-      <Button
-        variant="outline"
-        size="sm"
-        disabled={disabled || rows.length === 0}
-        onClick={() => exportToCSV(rows, `${filename}.csv`)}
-        className="border-[#2e2e3e] hover:border-blue-500/50 hover:bg-blue-500/5 text-gray-300"
-      >
-        <Download className="w-4 h-4 mr-1.5" /> CSV herunterladen
-      </Button>
       <Button
         variant="outline"
         size="sm"