feat(contacts): cari kişiler, hesap ↔ cari transferleri, cari ekstresi ve vade uyarısı, 007 migration

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/migrations/007-contacts.ts

@@ -0,0 +1,15 @@
+import { ContactModel } from "@/models/contact";
+import { TransactionModel } from "@/models/transaction";
+import type { Migration } from "./types";
+
+export const migration: Migration = {
+  name: "007-contacts",
+  description: "contacts index'leri; işlemlerde cari alanları ve cari index'i",
+  async up(db) {
+    await db
+      .collection("transactions")
+      .updateMany({ contactKind: { $exists: false } }, { $set: { contactKind: null } });
+    await ContactModel.createIndexes();
+    await TransactionModel.createIndexes();
+  },
+};