feat: emlak CRM iskelet kurulumu

- schema.ts tamamen yeniden yazıldı (properties, customers, customer_searches, property_matches, presentations, investors, activities, tenant_settings)
- Sidebar emlak modüllerine güncellendi (İlanlar, Müşteriler, Yatırımcılar, Sunumlar, Aktiviteler)
- Eski CRM lib dosyaları temizlendi (finance, invoice, lead, task, software, vs.)
- Yeni modül dizinleri oluşturuldu (stub pages)
- command-search emlak navigasyonuna güncellendi
- site-header temizlendi
- Typecheck: 0 hata (chart.tsx template hariç)

src/app/(dashboard)/customers/page.tsx

@@ -1,54 +1,8 @@
-import type { Metadata } from "next";
-import { redirect } from "next/navigation";
-
-import { UsageBanner } from "@/components/billing/usage-banner";
-import { listCustomers } from "@/lib/appwrite/customer-queries";
-import { getPlanUsage } from "@/lib/appwrite/plan-limits";
-import { requireTenant } from "@/lib/appwrite/tenant-guard";
-import { CustomersClient } from "./components/customers-client";
-
-export const metadata: Metadata = {
-  title: "İşletmem — Müşteriler",
-};
-
-export default async function CustomersPage() {
-  let ctx;
-  try {
-    ctx = await requireTenant();
-  } catch {
-    redirect("/onboarding");
-  }
-
-  const [customers, usage] = await Promise.all([
-    listCustomers(ctx.tenantId),
-    getPlanUsage(ctx),
-  ]);
-
+export default function CustomersPage() {
   return (
-    <div className="flex-1 space-y-6 px-6 pt-0">
-      <div className="flex flex-col gap-1">
-        <p className="text-muted-foreground text-sm">{ctx.settings?.companyName ?? "Çalışma alanı"}</p>
-        <h1 className="text-2xl font-bold tracking-tight">Müşteriler</h1>
-        <p className="text-muted-foreground text-sm">
-          Müşterilerinizi yönetin, hizmet ve yazılım ilişkilerini buradan kurun.
-        </p>
-      </div>
-
-      <UsageBanner usage={usage} resource="customers" />
-
-      <CustomersClient
-        customers={customers.map((c) => ({
-          id: c.$id,
-          name: c.name,
-          email: c.email ?? "",
-          phone: c.phone ?? "",
-          taxId: c.taxId ?? "",
-          address: c.address ?? "",
-          notes: c.notes ?? "",
-          status: (c.status ?? "active") as "active" | "passive",
-          createdAt: c.$createdAt,
-        }))}
-      />
+    <div className="flex flex-1 flex-col gap-4 p-4">
+      <h1 className="text-2xl font-bold">Müşteriler</h1>
+      <p className="text-muted-foreground">Yakında...</p>
     </div>
   );
 }