feat: Alle/Nur-neue Tabs + Option Nur neue Leads speichern

- Suchergebnis-Filter als Tabs: [Alle (46)] [Nur neue (X)] — beide klickbar
- Checkbox "Nur neue Leads speichern" erscheint vor der Suche
- Bei aktivierter Option: nach Abschluss werden vorhandene Leads
  automatisch aus dem Leadspeicher gelöscht, Toast zeigt Bilanz

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

app/suche/page.tsx

@@ -17,6 +17,7 @@ export default function SuchePage() {
   const [selected, setSelected] = useState<Set<string>>(new Set());
   const [deleting, setDeleting] = useState(false);
   const [onlyNew, setOnlyNew] = useState(false);
+  const [saveOnlyNew, setSaveOnlyNew] = useState(false);
 
   function handleChange(field: "query" | "region" | "count", value: string | number) {
     if (field === "query") setQuery(value as string);
@@ -32,6 +33,7 @@ export default function SuchePage() {
     setSearchDone(false);
     setSelected(new Set());
     setOnlyNew(false);
+    // saveOnlyNew intentionally kept — user setting persists across searches
     try {
       const res = await fetch("/api/search", {
         method: "POST",
@@ -51,16 +53,33 @@ export default function SuchePage() {
     }
   }
 
-  const handleDone = useCallback((result: LeadResult[], warning?: string) => {
+  const handleDone = useCallback(async (result: LeadResult[], warning?: string) => {
     setLoading(false);
     setLeads(result);
     setSearchDone(true);
+
+    // Auto-delete existing (non-new) leads from vault if "Nur neue speichern" is active
+    const existingIds = result.filter(l => !l.isNew).map(l => l.id);
+    if (saveOnlyNew && existingIds.length > 0) {
+      try {
+        await fetch("/api/leads/delete-from-results", {
+          method: "POST",
+          headers: { "Content-Type": "application/json" },
+          body: JSON.stringify({ resultIds: existingIds }),
+        });
+        // Mark them as deleted in local state (isNew stays false, they remain visible but are gone from vault)
+      } catch { /* silent — vault cleanup best-effort */ }
+    }
+
+    const newCount = result.filter(l => l.isNew).length;
     if (warning) {
       toast.warning(`${result.length} Unternehmen gefunden — E-Mail-Anreicherung fehlgeschlagen: ${warning}`, { duration: 6000 });
+    } else if (saveOnlyNew && existingIds.length > 0) {
+      toast.success(`✓ ${newCount} neue Leads gespeichert, ${existingIds.length} bereits vorhandene verworfen`, { duration: 5000 });
     } else {
       toast.success(`✓ ${result.length} Leads gefunden und im Leadspeicher gespeichert`, { duration: 4000 });
     }
-  }, []);
+  }, [saveOnlyNew]);
 
   async function handleDelete(ids: string[]) {
     if (!ids.length || deleting) return;
@@ -127,6 +146,29 @@ export default function SuchePage() {
         onSubmit={handleSubmit}
       />
 
+      {/* Save option */}
+      {!loading && !searchDone && (
+        <label
+          style={{
+            display: "flex",
+            alignItems: "center",
+            gap: 8,
+            marginTop: 10,
+            padding: "0 4px",
+            cursor: "pointer",
+            width: "fit-content",
+          }}
+        >
+          <input
+            type="checkbox"
+            checked={saveOnlyNew}
+            onChange={e => setSaveOnlyNew(e.target.checked)}
+            style={{ accentColor: "#3b82f6", width: 13, height: 13, cursor: "pointer" }}
+          />
+          <span style={{ fontSize: 12, color: "#6b7280" }}>Nur neue Leads speichern</span>
+        </label>
+      )}
+
       {/* Loading Card */}
       {loading && jobId && (
         <LoadingCard
@@ -206,30 +248,38 @@ export default function SuchePage() {
                     : `${visibleLeads.length} Leads`}
                 </span>
 
-                {/* Nur neue Filter */}
-                <button
-                  className="filter-pill"
-                  onClick={() => setOnlyNew(v => !v)}
-                  style={{
-                    display: "flex",
-                    alignItems: "center",
-                    gap: 5,
-                    background: onlyNew ? "rgba(34,197,94,0.15)" : "rgba(255,255,255,0.05)",
-                    border: `1px solid ${onlyNew ? "rgba(34,197,94,0.4)" : "#2e2e3e"}`,
-                    borderRadius: 20,
-                    padding: "3px 10px",
-                    fontSize: 11,
-                    color: onlyNew ? "#22c55e" : "#9ca3af",
-                    cursor: "pointer",
-                  }}
-                >
-                  <span style={{
-                    width: 6, height: 6, borderRadius: 3,
-                    background: onlyNew ? "#22c55e" : "#6b7280",
-                    display: "inline-block",
-                  }} />
-                  Nur neue ({newCount})
-                </button>
+                {/* Filter tabs */}
+                <div style={{
+                  display: "flex",
+                  background: "#0d0d18",
+                  border: "1px solid #2e2e3e",
+                  borderRadius: 8,
+                  padding: 2,
+                  gap: 2,
+                }}>
+                  {[
+                    { label: `Alle (${leads.length})`, value: false },
+                    { label: `Nur neue (${newCount})`, value: true },
+                  ].map(tab => (
+                    <button
+                      key={String(tab.value)}
+                      onClick={() => setOnlyNew(tab.value)}
+                      style={{
+                        padding: "3px 10px",
+                        borderRadius: 6,
+                        border: "none",
+                        fontSize: 11,
+                        cursor: "pointer",
+                        background: onlyNew === tab.value ? "#1e1e2e" : "transparent",
+                        color: onlyNew === tab.value ? "#ffffff" : "#6b7280",
+                        fontWeight: onlyNew === tab.value ? 500 : 400,
+                        transition: "background 0.12s, color 0.12s",
+                      }}
+                    >
+                      {tab.label}
+                    </button>
+                  ))}
+                </div>
               </div>
 
               <div style={{ display: "flex", alignItems: "center", gap: 10 }}>