feat(assets): varlık lotları, ortalama maliyet ve kâr/zarar servisi

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-11-05 23:17:44 +03:00
parent baec70d324
commit 890ba9f521
14 changed files with 1415 additions and 3 deletions
@@ -0,0 +1,15 @@
+import { AssetModel } from "@/models/asset";
+import { AssetMovementModel } from "@/models/asset-movement";
+import type { Migration } from "./types";
+
+export const migration: Migration = {
+  name: "009-assets",
+  description: "assets ve assetMovements index'leri; işlemlerde varlık alanları",
+  async up(db) {
+    await db
+      .collection("transactions")
+      .updateMany({ assetId: { $exists: false } }, { $set: { assetId: null } });
+    await AssetModel.createIndexes();
+    await AssetMovementModel.createIndexes();
+  },
+};
@@ -8,10 +8,11 @@ import { migration as m005 } from "./005-recurring";
 import { migration as m006 } from "./006-card-statements";
 import { migration as m007 } from "./007-contacts";
 import { migration as m008 } from "./008-in-kind";
+import { migration as m009 } from "./009-assets";
 import type { Migration } from "./types";

 /** Sıralı migration listesi. Yeni migration: dosyayı ekle ve buraya sırayla ekle. */
-export const MIGRATIONS: Migration[] = [m001, m002, m003, m004, m005, m006, m007, m008];
+export const MIGRATIONS: Migration[] = [m001, m002, m003, m004, m005, m006, m007, m008, m009];

 const COLLECTION = "migrations";

@@ -0,0 +1,62 @@
+"use server";
+
+import { revalidatePath } from "next/cache";
+import { z } from "zod";
+import { tr } from "@/i18n/tr";
+import { fail, type ActionResult } from "@/lib/action-result";
+import { getHouseholdActionContext } from "@/lib/dal";
+import { assetFormSchema, movementFormSchema } from "@/shared/schemas/asset";
+import { addMovement, createAsset, deleteAsset, deleteMovement, updateAsset } from "./service";
+
+const idSchema = z.string().regex(/^[a-f0-9]{24}$/i);
+
+function fieldErrors(error: z.ZodError) {
+  const out: Record<string, string> = {};
+  for (const issue of error.issues) {
+    const key = issue.path.join(".");
+    if (key && !out[key]) out[key] = issue.message;
+  }
+  return out;
+}
+
+async function run<T>(
+  schema: z.ZodType<T>,
+  input: unknown,
+  fn: (userId: string, householdId: string, data: T) => Promise<ActionResult<unknown>>,
+): Promise<ActionResult<unknown>> {
+  const ctx = await getHouseholdActionContext("member");
+  if (!ctx) return fail(tr.common.unauthorized);
+  const parsed = schema.safeParse(input);
+  if (!parsed.success) return fail(tr.adminUsers.errors.checkFields, fieldErrors(parsed.error));
+  const result = await fn(ctx.user.id, ctx.household.id, parsed.data);
+  if (result.ok) revalidatePath("/", "layout");
+  return result;
+}
+
+/** Yeni varlık (assetId boş) veya mevcut varlığı düzenle. */
+export async function saveAssetAction(assetId: unknown, input: unknown) {
+  if (assetId) {
+    const id = idSchema.safeParse(assetId);
+    if (!id.success) return fail(tr.common.notFound);
+    return run(assetFormSchema, input, (u, h, d) => updateAsset(u, h, id.data, d));
+  }
+  return run(assetFormSchema, input, createAsset);
+}
+
+export async function deleteAssetAction(assetId: unknown) {
+  const id = idSchema.safeParse(assetId);
+  if (!id.success) return fail(tr.common.notFound);
+  return run(z.unknown(), null, (u, h) => deleteAsset(u, h, id.data));
+}
+
+export async function addMovementAction(assetId: unknown, input: unknown) {
+  const id = idSchema.safeParse(assetId);
+  if (!id.success) return fail(tr.common.notFound);
+  return run(movementFormSchema, input, (u, h, d) => addMovement(u, h, id.data, d));
+}
+
+export async function deleteMovementAction(movementId: unknown) {
+  const id = idSchema.safeParse(movementId);
+  if (!id.success) return fail(tr.common.notFound);
+  return run(z.unknown(), null, (u, h) => deleteMovement(u, h, id.data));
+}
@@ -0,0 +1,328 @@
+import { afterAll, beforeAll, describe, expect, it } from "vitest";
+import { listAccounts } from "@/features/accounts/service";
+import { savePrice } from "@/features/in-kind/service";
+import {
+  listTransactions,
+  setTransactionDeleted,
+  updateTransaction,
+} from "@/features/transactions/service";
+import { tr } from "@/i18n/tr";
+import { AccountModel } from "@/models/account";
+import { AssetModel } from "@/models/asset";
+import { AssetMovementModel } from "@/models/asset-movement";
+import { AssetPriceModel } from "@/models/asset-price";
+import { AuditLogModel } from "@/models/audit-log";
+import { TransactionModel } from "@/models/transaction";
+import { todayIstanbul } from "@/shared/dates";
+import { addDays } from "@/shared/recurrence";
+import { assetFormSchema, movementFormSchema } from "@/shared/schemas/asset";
+import { assetPriceFormSchema } from "@/shared/schemas/in-kind";
+import { transactionFilterSchema, transactionFormSchema } from "@/shared/schemas/transaction";
+import { setupSeededDb, teardownDb } from "@/test/seeded-db";
+import {
+  addMovement,
+  createAsset,
+  deleteAsset,
+  deleteMovement,
+  getAsset,
+  listAssets,
+  updateAsset,
+} from "./service";
+
+let ids: Awaited<ReturnType<typeof setupSeededDb>>;
+let cakir = "";
+let ayse = "";
+let emre = "";
+let zeynep = "";
+let fatma = "";
+const today = todayIstanbul();
+const daysAgo = (n: number) => addDays(today, -n);
+
+beforeAll(async () => {
+  ids = await setupSeededDb();
+  cakir = ids.household("Çakır Ailesi");
+  ayse = ids.user("ayse");
+  emre = ids.user("emre");
+  zeynep = ids.user("zeynep");
+  fatma = ids.user("fatma");
+  // Seed örnekleri bu testin senaryolarını etkilemesin.
+  await Promise.all([
+    AssetPriceModel.deleteMany({}),
+    AssetModel.deleteMany({}),
+    AssetMovementModel.deleteMany({}),
+    TransactionModel.deleteMany({ assetId: { $ne: null } }),
+  ]);
+});
+afterAll(teardownDb);
+
+const acc = (name: string) =>
+  AccountModel.findOne({ householdId: cakir, name })
+    .lean()
+    .then((a) => String(a!._id));
+async function balance(accountId: string) {
+  return (await listAccounts(ayse, cakir))!.accounts.find((a) => a.id === accountId)!.balanceMinor!;
+}
+const mv = (input: Record<string, unknown>) => movementFormSchema.parse({ date: today, ...input });
+async function asset(name: string, assetKey = "gram_gold", isPrivate = false, by = ayse) {
+  const r = await createAsset(by, cakir, assetFormSchema.parse({ assetKey, name, isPrivate }));
+  return r.ok ? r.data.id : "";
+}
+
+describe("varlık lotları ve ortalama maliyet", () => {
+  let gold = "";
+
+  it("alım hesaptan transfer olarak çıkar; gelir/gider toplamları değişmez", async () => {
+    gold = await asset("Altın birikimi");
+    const ziraat = await acc("Ziraat Maaş");
+    const z0 = await balance(ziraat);
+    const sums0 = (await listTransactions(ayse, cakir, transactionFilterSchema.parse({})))!.sums;
+    const r = await addMovement(
+      ayse,
+      cakir,
+      gold,
+      mv({
+        kind: "buy",
+        date: daysAgo(60),
+        quantity: "10",
+        amount: "25.000",
+        accountId: ziraat,
+        storage: "Ev kasası",
+      }),
+    );
+    expect(r.ok).toBe(true);
+    expect(await balance(ziraat)).toBe(z0 - 25_000_00);
+    expect((await listTransactions(ayse, cakir, transactionFilterSchema.parse({})))!.sums).toEqual(
+      sums0,
+    );
+    // İşlem listesinde varlık adıyla görünür.
+    const page = (await listTransactions(
+      ayse,
+      cakir,
+      transactionFilterSchema.parse({ q: "Varlık alımı" }),
+    ))!;
+    expect(page.items[0]).toMatchObject({ asset: { id: gold, name: "Altın birikimi" } });
+  });
+
+  it("birim fiyatla alım ve fiyat tablosundan (satış fiyatı) alım; özet", async () => {
+    await addMovement(
+      ayse,
+      cakir,
+      gold,
+      mv({ kind: "buy", date: daysAgo(30), quantity: "2", unitPrice: "2.600" }),
+    );
+    // Fiyat yok → reddedilir.
+    expect(
+      (await addMovement(ayse, cakir, gold, mv({ kind: "buy", date: daysAgo(10), quantity: "2" })))
+        .ok,
+    ).toBe(false);
+    await savePrice(
+      ayse,
+      cakir,
+      assetPriceFormSchema.parse({
+        assetKey: "gram_gold",
+        date: daysAgo(10),
+        buy: "2.650",
+        sell: "2.700",
+      }),
+    );
+    expect(
+      (await addMovement(ayse, cakir, gold, mv({ kind: "buy", date: daysAgo(10), quantity: "2" })))
+        .ok,
+    ).toBe(true);
+    await savePrice(
+      ayse,
+      cakir,
+      assetPriceFormSchema.parse({
+        assetKey: "gram_gold",
+        date: today,
+        buy: "3.000",
+        sell: "3.100",
+      }),
+    );
+    const v = (await getAsset(ayse, cakir, gold))!;
+    // 14 gr, 25.000 + 5.200 + 5.400 = 35.600; değer alış 3.000 ile 42.000.
+    expect(v.summary).toMatchObject({
+      quantity: 14_000,
+      costMinor: 35_600_00,
+      investedMinor: 35_600_00,
+      avgCostMinor: 2_542_86,
+      currentValueMinor: 42_000_00,
+      unrealizedMinor: 6_400_00,
+      unrealizedBp: 1798,
+    });
+    expect(v.storage).toBe("Ev kasası");
+    expect(v.movements[0]!.kind).toBe("buy");
+  });
+
+  it("satış: hesaba girer, ortalama maliyetle gerçekleşmiş K/Z; eldekinden fazlası reddedilir", async () => {
+    const cuzdan = await acc("Cüzdan");
+    const c0 = await balance(cuzdan);
+    expect(
+      (await addMovement(ayse, cakir, gold, mv({ kind: "sell", quantity: "15", amount: "1" }))).ok,
+    ).toBe(false);
+    // Geçmiş tarihli satış o tarihteki miktarla sınırlı (60 gün önce yalnızca 10 gr vardı).
+    expect(
+      (
+        await addMovement(
+          ayse,
+          cakir,
+          gold,
+          mv({ kind: "sell", date: daysAgo(45), quantity: "11", amount: "1" }),
+        )
+      ).ok,
+    ).toBe(false);
+    const r = await addMovement(
+      ayse,
+      cakir,
+      gold,
+      mv({ kind: "sell", quantity: "4", amount: "12.000", accountId: cuzdan }),
+    );
+    expect(r.ok).toBe(true);
+    expect(await balance(cuzdan)).toBe(c0 + 12_000_00);
+    const v = (await getAsset(ayse, cakir, gold))!;
+    // 4 gr maliyeti: 35.600 × 4/14 = 10.171,43 → K/Z 1.828,57
+    expect(v.movements[0]).toMatchObject({
+      kind: "sell",
+      costOutMinor: 10_171_43,
+      realizedMinor: 1_828_57,
+      quantityAfter: 10_000,
+    });
+    expect(v.summary.realizedMinor).toBe(1_828_57);
+    expect(v.summary.proceedsMinor).toBe(12_000_00);
+  });
+
+  it("hediye çıkışı K/Z yazmaz, hesap hareketi oluşturmaz", async () => {
+    const before = (await getAsset(ayse, cakir, gold))!.summary;
+    const r = await addMovement(
+      ayse,
+      cakir,
+      gold,
+      mv({ kind: "gift_out", quantity: "1", note: "Yeğene" }),
+    );
+    expect(r.ok).toBe(true);
+    const m = await AssetMovementModel.findById(r.ok ? r.data.id : "").lean();
+    expect(m).toMatchObject({ amountMinor: 0, transactionId: null });
+    const after = (await getAsset(ayse, cakir, gold))!.summary;
+    expect(after.quantity).toBe(9_000);
+    expect(after.realizedMinor).toBe(before.realizedMinor);
+    expect(after.avgCostMinor).toBe(before.avgCostMinor);
+  });
+
+  it("bağlı işlem tek başına düzenlenemez/silinemez; hareket silinince işlem de silinir", async () => {
+    const tx = (await AssetMovementModel.findOne({ assetId: gold, kind: "sell" }).lean())!;
+    const txId = String(tx.transactionId);
+    const locked = { ok: false, error: tr.transactions.assetLocked };
+    expect(await setTransactionDeleted(ayse, cakir, txId, true)).toMatchObject(locked);
+    const edit = transactionFormSchema.parse({
+      type: "transfer",
+      date: today,
+      amount: "1",
+      accountId: await acc("Cüzdan"),
+      toAccountId: await acc("Ziraat Maaş"),
+    });
+    expect(await updateTransaction(ayse, cakir, txId, edit)).toMatchObject(locked);
+
+    const cuzdan = await acc("Cüzdan");
+    const c0 = await balance(cuzdan);
+    expect((await deleteMovement(ayse, cakir, String(tx._id))).ok).toBe(true);
+    expect(await balance(cuzdan)).toBe(c0 - 12_000_00);
+    expect(
+      await AuditLogModel.exists({ action: "asset.movement.delete", targetId: String(tx._id) }),
+    ).toBeTruthy();
+    expect((await getAsset(ayse, cakir, gold))!.summary.realizedMinor).toBe(0);
+  });
+
+  it("silinince sonraki çıkış eldekini aşacaksa reddedilir; hareketli varlık silinemez", async () => {
+    const first = (await AssetMovementModel.findOne({ assetId: gold, kind: "buy" })
+      .sort({ date: 1 })
+      .lean())!;
+    // Kalan: 10 + 2 + 2 alım, bugün 1 gr çıkış. Sonraki alımlar silinebilir; ilk alım silinirse
+    // çıkış eldekini aşar → reddedilir.
+    const buys = await AssetMovementModel.find({ assetId: gold, kind: "buy", deletedAt: null })
+      .sort({ date: -1 })
+      .lean();
+    expect(buys.at(-1)!._id.equals(first._id)).toBe(true);
+    for (const b of buys.slice(0, -1))
+      expect((await deleteMovement(ayse, cakir, String(b._id))).ok).toBe(true);
+    expect((await deleteMovement(ayse, cakir, String(first._id))).ok).toBe(false);
+    expect((await deleteAsset(ayse, cakir, gold)).ok).toBe(false);
+    expect(
+      (await updateAsset(ayse, cakir, gold, assetFormSchema.parse({ assetKey: "usd", name: "X" })))
+        .ok,
+    ).toBe(false);
+  });
+
+  it("gelen hediye: maliyet o günkü alış fiyatı, yatırım sayılmaz", async () => {
+    const z = await asset("Düğün ziynetleri", "quarter_gold");
+    await savePrice(
+      ayse,
+      cakir,
+      assetPriceFormSchema.parse({ assetKey: "quarter_gold", date: daysAgo(100), buy: "5.000" }),
+    );
+    expect(
+      movementFormSchema.safeParse({
+        kind: "gift_in",
+        date: today,
+        quantity: "1",
+        accountId: await acc("Cüzdan"),
+      }).success,
+    ).toBe(false);
+    expect(
+      (await addMovement(ayse, cakir, z, mv({ kind: "gift_in", date: daysAgo(90), quantity: "4" })))
+        .ok,
+    ).toBe(true);
+    const v = (await getAsset(ayse, cakir, z))!;
+    expect(v.summary).toMatchObject({ quantity: 4_000, costMinor: 20_000_00, investedMinor: 0 });
+    // Güncel değer: bugünden önceki en yakın fiyat.
+    expect(v.summary.currentValueMinor).toBe(20_000_00);
+  });
+});
+
+describe("görünürlük ve yetki", () => {
+  it("gizli varlık ve bağlı işlemi başkasına görünmez; izleyici yazamaz; başka hane göremez", async () => {
+    const secret = await asset("Emre dolar", "usd", true, emre);
+    await savePrice(
+      emre,
+      cakir,
+      assetPriceFormSchema.parse({ assetKey: "usd", date: today, buy: "40" }),
+    );
+    const r = await addMovement(
+      emre,
+      cakir,
+      secret,
+      mv({ kind: "buy", quantity: "100", amount: "4.000", accountId: await acc("Cüzdan") }),
+    );
+    expect(r.ok).toBe(true);
+    expect((await listAssets(emre, cakir))!.items.some((a) => a.id === secret)).toBe(true);
+    expect((await listAssets(ayse, cakir))!.items.some((a) => a.id === secret)).toBe(false);
+    expect(await getAsset(ayse, cakir, secret)).toBeNull();
+    const ayseTx = (await listTransactions(
+      ayse,
+      cakir,
+      transactionFilterSchema.parse({ q: "Emre dolar" }),
+    ))!;
+    expect(ayseTx.total).toBe(0);
+    expect(
+      (await addMovement(ayse, cakir, secret, mv({ kind: "gift_out", quantity: "1" }))).ok,
+    ).toBe(false);
+
+    const shared = (await listAssets(ayse, cakir))!.items[0]!.id;
+    expect(
+      (await addMovement(zeynep, cakir, shared, mv({ kind: "gift_out", quantity: "1" }))).ok,
+    ).toBe(false);
+    expect((await listAssets(zeynep, cakir))!.canWrite).toBe(false);
+    expect(await listAssets(fatma, cakir)).toBeNull();
+    expect(await getAsset(fatma, cakir, shared)).toBeNull();
+  });
+
+  it("toplamlar: fiyatı olmayan varlık toplam değere katılmaz", async () => {
+    const eur = await asset("Euro kumbara", "eur");
+    await addMovement(ayse, cakir, eur, mv({ kind: "gift_in", quantity: "50", amount: "2.400" }));
+    const data = (await listAssets(ayse, cakir))!;
+    expect(data.totals.missingPrice).toBe(1);
+    const withPrice = data.items.filter((i) => i.summary.currentValueMinor !== null);
+    expect(data.totals.valueMinor).toBe(
+      withPrice.reduce((a, i) => a + (i.summary.currentValueMinor ?? 0), 0),
+    );
+  });
+});
@@ -0,0 +1,484 @@
+import "server-only";
+import mongoose, { Types } from "mongoose";
+import { hasHouseholdRole } from "@/features/households/roles";
+import { priceOn, type PriceQuote } from "@/features/in-kind/service";
+import { loadContext, type Ctx } from "@/features/transactions/service";
+import { tr } from "@/i18n/tr";
+import { fail, ok, type ActionResult } from "@/lib/action-result";
+import { writeAudit } from "@/lib/audit";
+import { toObjectId } from "@/lib/object-id";
+import { AssetModel } from "@/models/asset";
+import { AssetMovementModel } from "@/models/asset-movement";
+import { TransactionModel } from "@/models/transaction";
+import { formatAssetQuantity, valueOf, type AssetKey } from "@/shared/assets";
+import { istanbulDayStart, todayIstanbul } from "@/shared/dates";
+import {
+  holdingSummary,
+  runMovements,
+  type HoldingSummary,
+  type MovementKind,
+} from "@/shared/portfolio";
+import { QUANTITY_SCALE } from "@/shared/quantity";
+import type { AssetForm, MovementForm } from "@/shared/schemas/asset";
+import { compareTr, foldTr } from "@/shared/search";
+
+/**
+ * Birikim ve varlık takibi (Bölüm 6.6). Okuma: viewer; yazma: member. Varlıklar hane ortaktır;
+ * "yalnızca ben" işaretli varlık ve hareketleri (bağlı hesap işlemleri dahil) yalnızca sahibine
+ * görünür. Değerleme alış fiyatıyla (Faz 0). Alım/satış hesaba bağlıysa transfer işlemi oluşur.
+ */
+
+const t = tr.assets;
+
+type AssetDoc = {
+  _id: Types.ObjectId;
+  assetKey: AssetKey;
+  name: string;
+  note: string;
+  isPrivate: boolean;
+  ownerUserId?: Types.ObjectId | null;
+};
+
+type MovementDoc = {
+  _id: Types.ObjectId;
+  assetId: Types.ObjectId;
+  kind: MovementKind;
+  date: string;
+  quantity: number;
+  unitPriceMinor?: number | null;
+  amountMinor: number;
+  accountId?: Types.ObjectId | null;
+  transactionId?: Types.ObjectId | null;
+  storage: string;
+  note: string;
+  inKindDebtId?: Types.ObjectId | null;
+  createdAt: Date;
+};
+
+export type AssetView = {
+  id: string;
+  assetKey: AssetKey;
+  name: string;
+  note: string;
+  isPrivate: boolean;
+  label: string;
+  price: PriceQuote | null;
+  summary: HoldingSummary;
+  /** Son alımın saklama yeri. */
+  storage: string;
+  movementCount: number;
+};
+
+export type AssetTotals = {
+  valueMinor: number;
+  costMinor: number;
+  unrealizedMinor: number;
+  realizedMinor: number;
+  /** Fiyatı olmadığı için toplam değere katılmayan (elde miktarı olan) varlık sayısı. */
+  missingPrice: number;
+};
+
+export type MovementRow = {
+  id: string;
+  kind: MovementKind;
+  date: string;
+  quantity: number;
+  unitPriceMinor: number | null;
+  amountMinor: number;
+  account: string | null;
+  storage: string;
+  note: string;
+  costOutMinor: number;
+  realizedMinor: number;
+  quantityAfter: number;
+  fromInKind: boolean;
+};
+
+export type AssetDetail = AssetView & { movements: MovementRow[]; canWrite: boolean };
+
+const sortMovements = (a: MovementDoc, b: MovementDoc) =>
+  a.date === b.date ? a.createdAt.getTime() - b.createdAt.getTime() : a.date < b.date ? -1 : 1;
+
+function visibleAsset(ctx: Ctx, id: Types.ObjectId | string) {
+  const a = ctx.assetMap.get(String(id));
+  return a && !a.hidden && !a.deleted ? a : null;
+}
+
+async function loadMovements(householdId: Types.ObjectId, assetIds: Types.ObjectId[]) {
+  const docs = await AssetMovementModel.find({
+    householdId,
+    assetId: { $in: assetIds },
+    deletedAt: null,
+  }).lean<MovementDoc[]>();
+  const by = new Map<string, MovementDoc[]>();
+  for (const m of docs) {
+    const list = by.get(String(m.assetId)) ?? [];
+    list.push(m);
+    by.set(String(m.assetId), list);
+  }
+  for (const list of by.values()) list.sort(sortMovements);
+  return by;
+}
+
+function toView(a: AssetDoc, movements: MovementDoc[], price: PriceQuote | null): AssetView {
+  const run = runMovements(movements);
+  const summary = holdingSummary(run, price?.buyMinor ?? null);
+  const storage = [...movements].reverse().find((m) => m.storage)?.storage ?? "";
+  return {
+    id: String(a._id),
+    assetKey: a.assetKey,
+    name: a.name,
+    note: a.note,
+    isPrivate: a.isPrivate,
+    label: formatAssetQuantity(a.assetKey, summary.quantity),
+    price,
+    summary,
+    storage,
+    movementCount: movements.length,
+  };
+}
+
+/** Görünür varlıklar ve toplamlar (net varlık ve dashboard da kullanır). */
+export async function listAssets(
+  userId: string,
+  householdId: string,
+): Promise<{ items: AssetView[]; totals: AssetTotals; canWrite: boolean } | null> {
+  const ctx = await loadContext(userId, householdId, "viewer");
+  if (!ctx) return null;
+  return { ...(await assetViews(ctx)), canWrite: hasHouseholdRole(ctx.m.role, "member") };
+}
+
+export async function assetViews(ctx: Ctx, date = todayIstanbul()) {
+  const docs = (
+    await AssetModel.find({ householdId: ctx.m.householdId, deletedAt: null }).lean<AssetDoc[]>()
+  ).filter((a) => visibleAsset(ctx, a._id));
+  const movements = await loadMovements(
+    ctx.m.householdId,
+    docs.map((a) => a._id),
+  );
+  const prices = new Map<string, PriceQuote | null>();
+  for (const key of new Set(docs.map((a) => a.assetKey)))
+    prices.set(key, await priceOn(ctx.m.householdId, key, date));
+  const items = docs
+    .map((a) => toView(a, movements.get(String(a._id)) ?? [], prices.get(a.assetKey) ?? null))
+    .sort(
+      (x, y) =>
+        Number(y.summary.quantity > 0) - Number(x.summary.quantity > 0) ||
+        (y.summary.currentValueMinor ?? 0) - (x.summary.currentValueMinor ?? 0) ||
+        compareTr(x.name, y.name),
+    );
+  const totals: AssetTotals = {
+    valueMinor: 0,
+    costMinor: 0,
+    unrealizedMinor: 0,
+    realizedMinor: 0,
+    missingPrice: 0,
+  };
+  for (const v of items) {
+    totals.realizedMinor += v.summary.realizedMinor;
+    if (v.summary.quantity === 0) continue;
+    if (v.summary.currentValueMinor === null) {
+      totals.missingPrice++;
+      continue;
+    }
+    totals.valueMinor += v.summary.currentValueMinor;
+    totals.costMinor += v.summary.costMinor;
+    totals.unrealizedMinor += v.summary.unrealizedMinor ?? 0;
+  }
+  return { items, totals };
+}
+
+async function loadAsset(ctx: Ctx, assetId: string) {
+  const id = toObjectId(assetId);
+  if (!id || !visibleAsset(ctx, id)) return null;
+  return AssetModel.findOne({
+    _id: id,
+    householdId: ctx.m.householdId,
+    deletedAt: null,
+  }).lean<AssetDoc>();
+}
+
+export async function getAsset(
+  userId: string,
+  householdId: string,
+  assetId: string,
+): Promise<AssetDetail | null> {
+  const ctx = await loadContext(userId, householdId, "viewer");
+  if (!ctx) return null;
+  const a = await loadAsset(ctx, assetId);
+  if (!a) return null;
+  const movements = (await loadMovements(ctx.m.householdId, [a._id])).get(String(a._id)) ?? [];
+  const price = await priceOn(ctx.m.householdId, a.assetKey, todayIstanbul());
+  const run = runMovements(movements);
+  const rows = movements.map((m, i): MovementRow => {
+    const acc = m.accountId ? ctx.accountMap.get(String(m.accountId)) : undefined;
+    const step = run.steps[i]!;
+    return {
+      id: String(m._id),
+      kind: m.kind,
+      date: m.date,
+      quantity: m.quantity,
+      unitPriceMinor: m.unitPriceMinor ?? null,
+      amountMinor: m.amountMinor,
+      account: acc ? (acc.hidden ? tr.transactions.list.hiddenAccount : acc.name) : null,
+      storage: m.storage,
+      note: m.note,
+      costOutMinor: step.costOutMinor,
+      realizedMinor: step.realizedMinor,
+      quantityAfter: step.quantityAfter,
+      fromInKind: Boolean(m.inKindDebtId),
+    };
+  });
+  return {
+    ...toView(a, movements, price),
+    movements: rows.reverse(),
+    canWrite: hasHouseholdRole(ctx.m.role, "member"),
+  };
+}
+
+// --- Varlık kaydı ---
+
+export async function createAsset(
+  actorId: string,
+  householdId: string,
+  input: AssetForm,
+): Promise<ActionResult<{ id: string }>> {
+  const ctx = await loadContext(actorId, householdId, "member");
+  if (!ctx) return fail(tr.common.unauthorized);
+  const actor = new Types.ObjectId(actorId);
+  const doc = await AssetModel.create({
+    householdId: ctx.m.householdId,
+    assetKey: input.assetKey,
+    name: input.name,
+    note: input.note,
+    isPrivate: input.isPrivate,
+    ownerUserId: input.isPrivate ? actor : null,
+    createdBy: actor,
+    updatedBy: actor,
+  });
+  return ok({ id: String(doc._id) });
+}
+
+export async function updateAsset(
+  actorId: string,
+  householdId: string,
+  assetId: string,
+  input: AssetForm,
+): Promise<ActionResult> {
+  const ctx = await loadContext(actorId, householdId, "member");
+  if (!ctx) return fail(tr.common.unauthorized);
+  const a = await loadAsset(ctx, assetId);
+  if (!a) return fail(tr.common.notFound);
+  if (
+    input.assetKey !== a.assetKey &&
+    (await AssetMovementModel.exists({ assetId: a._id, deletedAt: null }))
+  )
+    return fail(t.errors.assetKeyLocked, { assetKey: t.errors.assetKeyLocked });
+  const actor = new Types.ObjectId(actorId);
+  const owner = a.ownerUserId ?? (input.isPrivate ? actor : null);
+  await AssetModel.updateOne(
+    { _id: a._id, householdId: ctx.m.householdId },
+    {
+      $set: {
+        assetKey: input.assetKey,
+        name: input.name,
+        note: input.note,
+        isPrivate: input.isPrivate,
+        ownerUserId: input.isPrivate ? owner : null,
+        updatedBy: actor,
+      },
+    },
+  );
+  return ok(undefined);
+}
+
+export async function deleteAsset(
+  actorId: string,
+  householdId: string,
+  assetId: string,
+): Promise<ActionResult> {
+  const ctx = await loadContext(actorId, householdId, "member");
+  if (!ctx) return fail(tr.common.unauthorized);
+  const a = await loadAsset(ctx, assetId);
+  if (!a) return fail(tr.common.notFound);
+  if (await AssetMovementModel.exists({ assetId: a._id, deletedAt: null }))
+    return fail(t.errors.hasMovements);
+  const actor = new Types.ObjectId(actorId);
+  await AssetModel.updateOne({ _id: a._id }, { $set: { deletedAt: new Date(), updatedBy: actor } });
+  await writeAudit({
+    action: "asset.delete",
+    actorId: actor,
+    householdId: ctx.m.householdId,
+    targetType: "asset",
+    targetId: String(a._id),
+    diff: { name: a.name, assetKey: a.assetKey },
+  });
+  return ok(undefined);
+}
+
+// --- Hareketler ---
+
+function checkAccount(ctx: Ctx, id: string | null) {
+  if (!id) return null;
+  const a = ctx.accountMap.get(id);
+  return a && !a.hidden && !a.archived ? a : null;
+}
+
+/** Tutar ve birim fiyatı tamamlar (bkz. movementFormSchema). */
+async function resolveAmount(
+  householdId: Types.ObjectId,
+  assetKey: AssetKey,
+  input: MovementForm,
+): Promise<{ unitPriceMinor: number | null; amountMinor: number } | null> {
+  if (input.kind === "gift_out") return { unitPriceMinor: null, amountMinor: 0 };
+  if (input.amount !== null)
+    return {
+      amountMinor: input.amount,
+      unitPriceMinor:
+        input.unitPrice ?? Math.round((input.amount * QUANTITY_SCALE) / input.quantity),
+    };
+  let unit = input.unitPrice;
+  if (unit === null) {
+    const p = await priceOn(householdId, assetKey, input.date);
+    // Alımda kurumun satış fiyatı ödenir; satış ve hediye değeri alış fiyatıyla.
+    unit = p ? (input.kind === "buy" ? p.sellMinor : p.buyMinor) : null;
+  }
+  if (unit === null) return null;
+  return { unitPriceMinor: unit, amountMinor: valueOf(input.quantity, unit) };
+}
+
+export async function addMovement(
+  actorId: string,
+  householdId: string,
+  assetId: string,
+  input: MovementForm,
+  opts: { inKindDebtId?: Types.ObjectId; session?: mongoose.ClientSession } = {},
+): Promise<ActionResult<{ id: string }>> {
+  const ctx = await loadContext(actorId, householdId, "member");
+  if (!ctx) return fail(tr.common.unauthorized);
+  const a = await loadAsset(ctx, assetId);
+  if (!a) return fail(tr.common.notFound);
+  if (input.date > todayIstanbul()) return fail(t.errors.futureDate, { date: t.errors.futureDate });
+  const date = istanbulDayStart(input.date);
+  if (!date) return fail(tr.validation.date, { date: tr.validation.date });
+  const account = checkAccount(ctx, input.accountId);
+  if (input.accountId && !account)
+    return fail(tr.transactions.validation.accountInvalid, {
+      accountId: tr.transactions.validation.accountInvalid,
+    });
+  const amount = await resolveAmount(ctx.m.householdId, a.assetKey, input);
+  if (!amount) return fail(t.errors.noPrice, { amount: t.errors.noPrice });
+
+  // Eldeki miktar: yeni hareket aynı günün sonuna eklenmiş gibi doğrulanır.
+  const existing = (await loadMovements(ctx.m.householdId, [a._id])).get(String(a._id)) ?? [];
+  const now = new Date();
+  const candidate = [
+    ...existing,
+    { kind: input.kind, date: input.date, quantity: input.quantity, createdAt: now } as MovementDoc,
+  ]
+    .map((m) => ({ ...m, amountMinor: m.amountMinor ?? 0 }))
+    .sort(sortMovements);
+  if (runMovements(candidate).negativeAt !== null)
+    return fail(t.errors.insufficient, { quantity: t.errors.insufficient });
+
+  const actor = new Types.ObjectId(actorId);
+  const movementId = new Types.ObjectId();
+  const label = formatAssetQuantity(a.assetKey, input.quantity);
+  const write = async (session: mongoose.ClientSession) => {
+    let transactionId: Types.ObjectId | null = null;
+    if (account && amount.amountMinor > 0 && (input.kind === "buy" || input.kind === "sell")) {
+      const out = input.kind === "buy";
+      const description = t.txDescription[input.kind](label, a.name);
+      const [tx] = await TransactionModel.create(
+        [
+          {
+            householdId: ctx.m.householdId,
+            type: "transfer",
+            status: "posted",
+            date,
+            // Alım hesaptan çıkar (varlığa); satış hesaba girer (varlıktan).
+            accountId: out ? account.id : null,
+            toAccountId: out ? null : account.id,
+            amountMinor: amount.amountMinor,
+            description,
+            searchText: foldTr(description),
+            assetId: a._id,
+            createdBy: actor,
+            updatedBy: actor,
+          },
+        ],
+        { session },
+      );
+      transactionId = tx!._id;
+    }
+    await AssetMovementModel.create(
+      [
+        {
+          _id: movementId,
+          householdId: ctx.m.householdId,
+          assetId: a._id,
+          kind: input.kind,
+          date: input.date,
+          quantity: input.quantity,
+          unitPriceMinor: amount.unitPriceMinor,
+          amountMinor: amount.amountMinor,
+          accountId: account && transactionId ? account.id : null,
+          transactionId,
+          storage: input.storage,
+          note: input.note,
+          inKindDebtId: opts.inKindDebtId ?? null,
+          createdBy: actor,
+          createdAt: now,
+        },
+      ],
+      { session },
+    );
+  };
+  if (opts.session) await write(opts.session);
+  else await mongoose.connection.transaction(write);
+  return ok({ id: String(movementId) });
+}
+
+export async function deleteMovement(
+  actorId: string,
+  householdId: string,
+  movementId: string,
+): Promise<ActionResult> {
+  const ctx = await loadContext(actorId, householdId, "member");
+  if (!ctx) return fail(tr.common.unauthorized);
+  const id = toObjectId(movementId);
+  if (!id) return fail(tr.common.notFound);
+  const m = await AssetMovementModel.findOne({
+    _id: id,
+    householdId: ctx.m.householdId,
+    deletedAt: null,
+  }).lean<MovementDoc>();
+  if (!m || !visibleAsset(ctx, m.assetId)) return fail(tr.common.notFound);
+  const rest = (
+    (await loadMovements(ctx.m.householdId, [m.assetId])).get(String(m.assetId)) ?? []
+  ).filter((x) => !x._id.equals(m._id));
+  if (runMovements(rest).negativeAt !== null) return fail(t.errors.deleteBreaks);
+  const actor = new Types.ObjectId(actorId);
+  await mongoose.connection.transaction(async (session) => {
+    const now = new Date();
+    await AssetMovementModel.updateOne({ _id: m._id }, { $set: { deletedAt: now } }, { session });
+    if (m.transactionId)
+      await TransactionModel.updateOne(
+        { _id: m.transactionId, householdId: ctx.m.householdId },
+        { $set: { deletedAt: now, updatedBy: actor } },
+        { session },
+      );
+    await writeAudit(
+      {
+        action: "asset.movement.delete",
+        actorId: actor,
+        householdId: ctx.m.householdId,
+        targetType: "assetMovement",
+        targetId: String(m._id),
+        diff: { kind: m.kind, quantity: m.quantity, amountMinor: m.amountMinor, date: m.date },
+      },
+      session,
+    );
+  });
+  return ok(undefined);
+}
@@ -13,6 +13,7 @@ import { writeAudit } from "@/lib/audit";
 import { getDb } from "@/lib/db/mongo";
 import { toObjectId } from "@/lib/object-id";
 import { AccountModel } from "@/models/account";
+import { AssetModel } from "@/models/asset";
 import { ContactModel } from "@/models/contact";
 import { CategoryModel } from "@/models/category";
 import { PayeeModel } from "@/models/payee";
@@ -70,7 +71,7 @@ export async function loadContext(
  const m = await resolveMembership(userId, householdId, minRole);
  if (!m) return null;
  await postDueInstallments(m.householdId);
-  const [accounts, categories, contacts] = await Promise.all([
+  const [accounts, categories, contacts, assets] = await Promise.all([
    AccountModel.find({ householdId: m.householdId })
      .select({ name: 1, type: 1, archivedAt: 1, isPrivate: 1, ownerUserId: 1, icon: 1, color: 1 })
      .lean(),
@@ -89,6 +90,9 @@ export async function loadContext(
    ContactModel.find({ householdId: m.householdId })
      .select({ name: 1, isPrivate: 1, ownerUserId: 1, archivedAt: 1 })
      .lean(),
+    AssetModel.find({ householdId: m.householdId })
+      .select({ name: 1, assetKey: 1, isPrivate: 1, ownerUserId: 1, deletedAt: 1 })
+      .lean(),
  ]);
  const accountMap = new Map<string, AccountInfo>(
    accounts.map((a) => [
@@ -143,6 +147,19 @@ export async function loadContext(
    ]),
  );
  const hiddenContactIds = [...contactMap.values()].filter((c) => c.hidden).map((c) => c.id);
+  const assetMap = new Map(
+    assets.map((a) => [
+      String(a._id),
+      {
+        id: a._id,
+        name: a.name,
+        assetKey: a.assetKey,
+        deleted: Boolean(a.deletedAt),
+        hidden: Boolean(a.isPrivate) && String(a.ownerUserId) !== userId,
+      },
+    ]),
+  );
+  const hiddenAssetIds = [...assetMap.values()].filter((a) => a.hidden).map((a) => a.id);
  return {
    m,
    accountMap,
@@ -150,13 +167,15 @@ export async function loadContext(
    contactMap,
    hiddenAccountIds,
    hiddenContactIds,
+    assetMap,
+    hiddenAssetIds,
    flatCategories: flat,
  };
 }

 export type Ctx = NonNullable<Awaited<ReturnType<typeof loadContext>>>;

-/** Gizli hesaplara veya gizli carilere dokunan işlemleri dışlayan temel filtre. */
+/** Gizli hesaplara, gizli carilere veya gizli varlıklara dokunan işlemleri dışlayan temel filtre. */
 export function baseFilter(ctx: Ctx): Record<string, unknown> {
  const f: Record<string, unknown> = { householdId: ctx.m.householdId, deletedAt: null };
  if (ctx.hiddenAccountIds.length) {
@@ -164,6 +183,7 @@ export function baseFilter(ctx: Ctx): Record<string, unknown> {
    f.toAccountId = { $nin: ctx.hiddenAccountIds };
  }
  if (ctx.hiddenContactIds.length) f.contactId = { $nin: ctx.hiddenContactIds };
+  if (ctx.hiddenAssetIds.length) f.assetId = { $nin: ctx.hiddenAssetIds };
  return f;
 }

@@ -473,6 +493,7 @@ export async function updateTransaction(
  if (current.isAdjustment) return fail(t.adjustmentReadOnly);
  // Cari hareketi cari sayfasındaki formla düzenlenir (tür ve yön cariye özgü).
  if (current.contactId) return fail(t.contactEditHint);
+  if (current.assetId) return fail(t.assetLocked);
  const built = buildDoc(ctx, input, current);
  if (!built.ok) return built;
  const d = built.data as {
@@ -534,6 +555,8 @@ export async function setTransactionDeleted(
  if (!current || Boolean(current.deletedAt) === deleted) return fail(tr.common.notFound);
  // Aynî borç ödemesi kaydın ödeme geçmişinin parçasıdır; tek başına silinmez.
  if (current.inKindRole === "payment") return fail(t.inKindPaymentLocked);
+  // Varlık alım/satışı hareketin parçasıdır; hareket Birikim sayfasından silinir.
+  if (current.assetId) return fail(t.assetLocked);
  const actor = new Types.ObjectId(actorId);
  await TransactionModel.updateOne(
    { _id: current._id, householdId: ctx.m.householdId },
@@ -602,6 +625,8 @@ export type TransactionListItem = {
  toAccount: { id: string; name: string } | null;
  /** Cari transferi: kişi ve hareket türü. */
  contact: { id: string; name: string; kind: ContactEntryKind } | null;
+  /** Varlık alımı/satışı: karşı taraf varlık. */
+  asset: { id: string; name: string } | null;
  category: { id: string; name: string; path: string; icon: IconKey; color: Swatch } | null;
  splitCount: number;
  payeeName: string;
@@ -683,6 +708,9 @@ export function toItem(ctx: Ctx, tx: LeanTx, names: Map<string, string>): Transa
            kind: tx.contactKind,
          }
        : null,
+    asset: tx.assetId
+      ? { id: String(tx.assetId), name: ctx.assetMap.get(String(tx.assetId))?.name ?? "—" }
+      : null,
    installment: tx.installment?.planId
      ? {
          planId: String(tx.installment.planId),
@@ -364,6 +364,7 @@ export const tr = {
    cancelInstallments: "Kalan taksitleri iptal et",
    contactEditHint: "Cari hareketi cari sayfasından düzenlenir.",
    inKindPaymentLocked: "Aynî borç ödemesi silinemez; ödeme cari sayfasındaki kayda bağlıdır.",
+    assetLocked: "Varlık alım/satış işlemi Birikim sayfasındaki hareketten yönetilir.",
    readOnly: "İzleyici rolündesiniz; işlem ekleyemezsiniz.",
    noAccounts: "İşlem girmek için önce bir hesap gerekli.",
    noAccountsLink: "Hesaplara git",
@@ -640,6 +641,119 @@ export const tr = {
      account: "Hesap seçin",
    },
  },
+  assets: {
+    title: "Birikim",
+    description:
+      "Altın, döviz ve ziynet birikimleri: alım lotları, satış ve çıkışlar, ortalama maliyet ve kâr/zarar. Değerleme alış fiyatıyla.",
+    new: "Varlık ekle",
+    asset: "Varlık",
+    open: "Varlığa git",
+    createTitle: "Yeni varlık",
+    editTitle: "Varlığı düzenle",
+    empty: "Henüz varlık yok. Bir varlık ekleyip ilk alımı girin.",
+    closedGroup: "Elde kalmayanlar",
+    privateBadge: "Yalnızca ben",
+    fields: {
+      asset: "Varlık türü",
+      name: "Ad",
+      namePlaceholder: "Ör. Gram altın birikimi",
+      note: "Not",
+      isPrivate: "Yalnızca ben görebilirim",
+      isPrivateHint: "İşaretlenirse bu varlık ve hareketleri hanedeki diğer üyelere görünmez.",
+    },
+    stats: {
+      quantity: "Eldeki miktar",
+      avgCost: "Ortalama maliyet",
+      cost: "Maliyet",
+      currentValue: "Güncel değer",
+      unrealized: "Gerçekleşmemiş K/Z",
+      realized: "Gerçekleşmiş K/Z",
+      invested: "Yatırılan",
+      proceeds: "Satış geliri",
+      noPrice: "Fiyat yok",
+      price: (price: string, date: string) => `Güncel alış fiyatı ${price} · ${date}`,
+      perUnit: (unit: string) => `/ ${unit}`,
+    },
+    totals: {
+      value: "Toplam güncel değer",
+      cost: "Toplam maliyet",
+      unrealized: "Gerçekleşmemiş K/Z",
+      realized: "Gerçekleşmiş K/Z",
+      missingPrice: (n: number) => `${n} varlığın fiyatı yok; toplam değere katılmadı.`,
+    },
+    kinds: {
+      buy: "Alım",
+      gift_in: "Hediye / miras geldi",
+      sell: "Satış",
+      gift_out: "Hediye / çıkış",
+    },
+    kindHints: {
+      buy: "Para seçilen hesaptan çıkar (transfer; gider sayılmaz).",
+      gift_in: "Hesap hareketi oluşmaz; maliyet o günkü değerdir.",
+      sell: "Satış tutarı seçilen hesaba girer; ortalama maliyete göre kâr/zarar yazılır.",
+      gift_out: "Hesap hareketi oluşmaz; ortalama maliyetle elden çıkar.",
+    },
+    movement: {
+      add: "Hareket ekle",
+      title: (kind: string, name: string) => `${kind} · ${name}`,
+      date: "Tarih",
+      quantity: "Miktar",
+      unitPrice: "Birim fiyat (TL)",
+      amount: "Toplam tutar (TL)",
+      priceHint:
+        "Tutar veya birim fiyattan birini girin; ikisi de boşsa fiyat tablosu kullanılır (alımda satış, satışta alış fiyatı).",
+      giftValueHint: "Boş bırakılırsa fiyat tablosundaki o günkü alış fiyatı kullanılır.",
+      account: "Hesap",
+      accountNone: "— Hesap yok —",
+      accountHint: "Hesap seçilmezse hesap hareketi oluşmaz.",
+      storage: "Saklama yeri",
+      storagePlaceholder: "Ör. ev kasası, banka kiralık kasa",
+      note: "Not",
+      held: (q: string) => `Eldeki: ${q}`,
+    },
+    history: "Hareketler",
+    noMovements: "Henüz hareket yok.",
+    table: {
+      date: "Tarih",
+      kind: "Hareket",
+      quantity: "Miktar",
+      unitPrice: "Birim fiyat",
+      amount: "Tutar",
+      result: "K/Z",
+      balance: "Kalan",
+    },
+    deleteMovement: "Hareketi sil",
+    deleteMovementTitle: "Hareket silinsin mi?",
+    deleteMovementDescription:
+      "Hareket ve bağlı hesap işlemi silinir; ortalama maliyet ve kâr/zarar yeniden hesaplanır.",
+    delete: "Varlığı sil",
+    deleteTitle: "Varlık silinsin mi?",
+    deleteDescription: "Yalnızca hareketi olmayan varlık silinebilir.",
+    prices: "Fiyat tablosu",
+    back: "Birikim",
+    txDescription: {
+      buy: (label: string, name: string) => `Varlık alımı: ${label} (${name})`,
+      sell: (label: string, name: string) => `Varlık satışı: ${label} (${name})`,
+    },
+    toast: {
+      saved: "Varlık kaydedildi.",
+      movement: "Hareket kaydedildi.",
+      movementDeleted: "Hareket silindi.",
+      deleted: "Varlık silindi.",
+    },
+    errors: {
+      noPrice: "Bu tarih için fiyat yok; tutar veya birim fiyat girin.",
+      insufficient: "Bu tarihte eldeki miktar yetersiz.",
+      deleteBreaks: "Bu hareket silinirse sonraki bir satış/çıkış eldeki miktarı aşar.",
+      hasMovements: "Hareketi olan varlık silinemez; önce hareketleri silin.",
+      assetKeyLocked: "Hareketi olan varlığın türü değiştirilemez.",
+      futureDate: "Gelecek tarihli hareket girilemez.",
+      privateOwner: "Yalnızca sahibi gizliliği değiştirebilir.",
+    },
+    validation: {
+      noAccountForGift: "Hediye hareketinde hesap seçilmez.",
+    },
+  },
  prices: {
    title: "Fiyat tablosu",
    description:
@@ -0,0 +1,45 @@
+import { model, models, Schema, type InferSchemaType, type Model } from "mongoose";
+import { MOVEMENT_KINDS } from "@/shared/portfolio";
+
+/**
+ * Varlık hareketi (lot): alım, gelen hediye, satış, hediye/çıkış. Alım ve satış bir hesaba
+ * bağlıysa transfer işlemi oluşturulur (`transactionId`; gelir/gider raporlarına girmez).
+ * Sıra: tarih, sonra oluşturulma anı.
+ */
+const assetMovementSchema = new Schema(
+  {
+    householdId: { type: Schema.Types.ObjectId, required: true },
+    assetId: { type: Schema.Types.ObjectId, required: true },
+    kind: { type: String, enum: MOVEMENT_KINDS, required: true },
+    /** "YYYY-MM-DD" (İstanbul). */
+    date: { type: String, required: true },
+    /** Binde bir. */
+    quantity: { type: Number, required: true, min: 1 },
+    unitPriceMinor: { type: Number, default: null },
+    /** Alımda ödenen, satışta alınan, gelen hediyede değer; çıkışta 0. */
+    amountMinor: { type: Number, default: 0, min: 0 },
+    accountId: { type: Schema.Types.ObjectId, default: null },
+    transactionId: { type: Schema.Types.ObjectId, default: null },
+    /** Saklama yeri (kasa, banka kiralık kasası …). */
+    storage: { type: String, default: "", maxlength: 120 },
+    note: { type: String, default: "", maxlength: 300 },
+    /** Aynî borç/alacak ödemesinden gelen hareket (Faz 9b). */
+    inKindDebtId: { type: Schema.Types.ObjectId, default: null },
+    deletedAt: { type: Date, default: null },
+    seedRef: { type: String, default: null },
+    createdBy: { type: Schema.Types.ObjectId, required: true },
+  },
+  { timestamps: true, collection: "assetMovements" },
+);
+
+assetMovementSchema.index({ householdId: 1, assetId: 1, deletedAt: 1, date: 1, createdAt: 1 });
+assetMovementSchema.index(
+  { householdId: 1, seedRef: 1 },
+  { unique: true, partialFilterExpression: { seedRef: { $type: "string" } } },
+);
+
+export type AssetMovement = InferSchemaType<typeof assetMovementSchema>;
+
+export const AssetMovementModel: Model<AssetMovement> =
+  (models.AssetMovement as Model<AssetMovement> | undefined) ??
+  model<AssetMovement>("AssetMovement", assetMovementSchema);
@@ -0,0 +1,34 @@
+import { model, models, Schema, type InferSchemaType, type Model } from "mongoose";
+import { ASSET_KEYS } from "@/shared/assets";
+
+/**
+ * Varlık (Bölüm 6.6): bir varlık türünde tutulan birikim, ör. "Gram altın birikimi" veya
+ * "Düğün ziynetleri". Miktar ve maliyet `assetMovements`ten hesaplanır (ağırlıklı ortalama).
+ * "Yalnızca ben" işaretli varlık ve hareketleri yalnızca sahibine görünür.
+ */
+const assetSchema = new Schema(
+  {
+    householdId: { type: Schema.Types.ObjectId, required: true },
+    assetKey: { type: String, enum: ASSET_KEYS, required: true },
+    name: { type: String, required: true, trim: true, maxlength: 80 },
+    note: { type: String, default: "", maxlength: 500 },
+    isPrivate: { type: Boolean, default: false },
+    ownerUserId: { type: Schema.Types.ObjectId, default: null },
+    deletedAt: { type: Date, default: null },
+    seedRef: { type: String, default: null },
+    createdBy: { type: Schema.Types.ObjectId, required: true },
+    updatedBy: { type: Schema.Types.ObjectId, required: true },
+  },
+  { timestamps: true, collection: "assets" },
+);
+
+assetSchema.index({ householdId: 1, deletedAt: 1, name: 1 });
+assetSchema.index(
+  { householdId: 1, seedRef: 1 },
+  { unique: true, partialFilterExpression: { seedRef: { $type: "string" } } },
+);
+
+export type Asset = InferSchemaType<typeof assetSchema>;
+
+export const AssetModel: Model<Asset> =
+  (models.Asset as Model<Asset> | undefined) ?? model<Asset>("Asset", assetSchema);
@@ -33,6 +33,8 @@ export const AUDIT_ACTIONS = [
  "inkind.payment",
  "inkind.close",
  "inkind.delete",
+  "asset.delete",
+  "asset.movement.delete",
 ] as const;
 export type AuditAction = (typeof AUDIT_ACTIONS)[number];

@@ -64,6 +64,11 @@ const transactionSchema = new Schema(
     */
    inKindDebtId: { type: Schema.Types.ObjectId, default: null },
    inKindRole: { type: String, enum: ["contribution", "payment", null], default: null },
+    /**
+     * Varlık alımı (hesap → varlık) veya satışı (varlık → hesap): karşı hesap boş transfer.
+     * Hareketi varlık sayfasından yönetilir; görünürlük varlığa bağlıdır.
+     */
+    assetId: { type: Schema.Types.ObjectId, default: null },
    /**
     * Mutabakatı yapılmış hesaplar (Bölüm 6.1). Transfer iki hesaba dokunduğu için hesap bazında
     * tutulur. Tutar, tarih, tür veya hesap değişirse işaret kalkar.
@@ -88,6 +93,7 @@ transactionSchema.index({ householdId: 1, effectiveCategoryIds: 1, date: -1 });
 transactionSchema.index({ householdId: 1, tags: 1 });
 transactionSchema.index({ householdId: 1, contactId: 1, date: 1 }, { sparse: true });
 transactionSchema.index({ "installment.planId": 1 }, { sparse: true });
+transactionSchema.index({ householdId: 1, assetId: 1 }, { sparse: true });
 transactionSchema.index(
  { recurringRuleId: 1, occurrenceIndex: 1 },
  { unique: true, partialFilterExpression: { recurringRuleId: { $type: "objectId" } } },
@@ -0,0 +1,72 @@
+import { describe, expect, it } from "vitest";
+import { formatBp, holdingSummary, runMovements, type MovementInput } from "./portfolio";
+
+const buy = (quantity: number, amountMinor: number): MovementInput => ({
+  kind: "buy",
+  quantity,
+  amountMinor,
+});
+
+describe("ağırlıklı ortalama maliyet", () => {
+  it("örnek senaryo: 10 gr 25.000 TL'ye, her ay ekleme", () => {
+    // 10 gr × 2.500, 2 gr × 2.600, 2 gr × 2.700 → 14 gr, 35.600 TL; ort. 2.542,857…
+    const run = runMovements([buy(10_000, 25_000_00), buy(2_000, 5_200_00), buy(2_000, 5_400_00)]);
+    expect(run.quantity).toBe(14_000);
+    expect(run.costMinor).toBe(35_600_00);
+    expect(run.investedMinor).toBe(35_600_00);
+    const s = holdingSummary(run, 3_000_00);
+    expect(s.avgCostMinor).toBe(2_542_86);
+    expect(s.currentValueMinor).toBe(42_000_00);
+    expect(s.unrealizedMinor).toBe(6_400_00);
+    // 6.400 / 35.600 = %17,98
+    expect(s.unrealizedBp).toBe(1798);
+  });
+
+  it("satış: ortalama maliyetle düşer, gerçekleşmiş kâr/zarar", () => {
+    const run = runMovements([
+      buy(10_000, 30_000_00),
+      buy(10_000, 40_000_00),
+      { kind: "sell", quantity: 5_000, amountMinor: 20_000_00 },
+    ]);
+    // ort. 3.500 → 5 gr maliyet 17.500; satış 20.000 → +2.500
+    expect(run.steps[2]).toMatchObject({ costOutMinor: 17_500_00, realizedMinor: 2_500_00 });
+    expect(run.quantity).toBe(15_000);
+    expect(run.costMinor).toBe(52_500_00);
+    expect(run.proceedsMinor).toBe(20_000_00);
+    // Kalan ortalama değişmez.
+    expect(holdingSummary(run, null).avgCostMinor).toBe(3_500_00);
+  });
+
+  it("hediye çıkışı K/Z yazmaz; gelen hediye yatırım sayılmaz; tamamı çıkınca maliyet sıfır", () => {
+    const run = runMovements([
+      buy(3_000, 9_000_00),
+      { kind: "gift_in", quantity: 1_000, amountMinor: 3_300_00 },
+      { kind: "gift_out", quantity: 2_000, amountMinor: 0 },
+      { kind: "sell", quantity: 2_000, amountMinor: 7_000_00 },
+    ]);
+    expect(run.investedMinor).toBe(9_000_00);
+    expect(run.giftInMinor).toBe(3_300_00);
+    // ort. 3.075 → çıkış 6.150, kalan 6.150; satış tümü → K/Z 850
+    expect(run.giftOutCostMinor).toBe(6_150_00);
+    expect(run.realizedMinor).toBe(850_00);
+    expect(run.quantity).toBe(0);
+    expect(run.costMinor).toBe(0);
+    const s = holdingSummary(run, 3_500_00);
+    expect(s).toMatchObject({ avgCostMinor: null, currentValueMinor: 0, unrealizedBp: null });
+  });
+
+  it("eldekinden fazla çıkış işaretlenir", () => {
+    const run = runMovements([
+      buy(1_000, 100_00),
+      { kind: "sell", quantity: 2_000, amountMinor: 1 },
+    ]);
+    expect(run.negativeAt).toBe(1);
+    expect(runMovements([buy(1_000, 100_00)]).negativeAt).toBeNull();
+  });
+
+  it("oran biçimi", () => {
+    expect(formatBp(1798)).toBe("+%17,98");
+    expect(formatBp(-350)).toBe("−%3,5");
+    expect(formatBp(0)).toBe("%0");
+  });
+});
@@ -0,0 +1,146 @@
+import { QUANTITY_SCALE } from "./quantity";
+
+/**
+ * Varlık takibi hesap motoru (Bölüm 6.6): ağırlıklı ortalama maliyet, gerçekleşmiş ve
+ * gerçekleşmemiş kâr/zarar. Miktarlar binde bir tamsayı, tutarlar kuruş.
+ *
+ * - Alım (`buy`): miktar ve maliyet artar; ödenen TL "yatırılan" sayılır.
+ * - Gelen hediye/miras (`gift_in`): miktar artar; maliyet = girildiği günkü değer (yatırım değil).
+ * - Satış (`sell`): ortalama maliyetle maliyet düşer; satış tutarı − düşen maliyet = gerçekleşmiş K/Z.
+ * - Hediye/çıkış (`gift_out`): ortalama maliyetle maliyet düşer; kâr/zarar yazılmaz.
+ */
+
+export const MOVEMENT_KINDS = ["buy", "gift_in", "sell", "gift_out"] as const;
+export type MovementKind = (typeof MOVEMENT_KINDS)[number];
+
+export const isInflow = (k: MovementKind) => k === "buy" || k === "gift_in";
+
+export type MovementInput = {
+  kind: MovementKind;
+  quantity: number;
+  /** Alımda ödenen, satışta alınan, gelen hediyede değer; çıkışta yok sayılır. */
+  amountMinor: number;
+};
+
+export type MovementStep = {
+  /** Satış/çıkışta ortalama maliyetle düşülen maliyet. */
+  costOutMinor: number;
+  /** Yalnızca satışta: satış tutarı − düşülen maliyet. */
+  realizedMinor: number;
+  /** Hareketten sonraki miktar ve kalan maliyet. */
+  quantityAfter: number;
+  costAfterMinor: number;
+};
+
+export type PortfolioRun = {
+  steps: MovementStep[];
+  quantity: number;
+  /** Kalan miktarın maliyet esası. */
+  costMinor: number;
+  /** Alımlarda ödenen toplam TL. */
+  investedMinor: number;
+  /** Satışlardan alınan toplam TL. */
+  proceedsMinor: number;
+  realizedMinor: number;
+  /** Gelen hediyelerin girişteki değeri. */
+  giftInMinor: number;
+  /** Çıkışlarla düşen maliyet. */
+  giftOutCostMinor: number;
+  /** Miktarın eksiye düştüğü ilk hareketin sırası (geçerli dizide null). */
+  negativeAt: number | null;
+};
+
+/** Hareketleri kronolojik sırada (çağıran sıralar) işler. */
+export function runMovements(movements: MovementInput[]): PortfolioRun {
+  let quantity = 0;
+  let cost = 0;
+  const r: PortfolioRun = {
+    steps: [],
+    quantity: 0,
+    costMinor: 0,
+    investedMinor: 0,
+    proceedsMinor: 0,
+    realizedMinor: 0,
+    giftInMinor: 0,
+    giftOutCostMinor: 0,
+    negativeAt: null,
+  };
+  movements.forEach((m, i) => {
+    let costOut = 0;
+    let realized = 0;
+    if (isInflow(m.kind)) {
+      quantity += m.quantity;
+      cost += m.amountMinor;
+      if (m.kind === "buy") r.investedMinor += m.amountMinor;
+      else r.giftInMinor += m.amountMinor;
+    } else {
+      if (m.quantity > quantity) {
+        if (r.negativeAt === null) r.negativeAt = i;
+        costOut = cost;
+      } else {
+        costOut = m.quantity === quantity ? cost : Math.round((cost * m.quantity) / quantity);
+      }
+      quantity = Math.max(0, quantity - m.quantity);
+      cost -= costOut;
+      if (m.kind === "sell") {
+        realized = m.amountMinor - costOut;
+        r.proceedsMinor += m.amountMinor;
+        r.realizedMinor += realized;
+      } else r.giftOutCostMinor += costOut;
+    }
+    r.steps.push({
+      costOutMinor: costOut,
+      realizedMinor: realized,
+      quantityAfter: quantity,
+      costAfterMinor: cost,
+    });
+  });
+  r.quantity = quantity;
+  r.costMinor = cost;
+  return r;
+}
+
+export type HoldingSummary = {
+  quantity: number;
+  costMinor: number;
+  /** Birim başına ağırlıklı ortalama maliyet (miktar 0 ise null). */
+  avgCostMinor: number | null;
+  /** Güncel alış fiyatıyla değer (fiyat yoksa null). */
+  currentValueMinor: number | null;
+  unrealizedMinor: number | null;
+  /** Gerçekleşmemiş K/Z oranı, baz puan (%12,34 → 1234); maliyet 0 ise null. */
+  unrealizedBp: number | null;
+  realizedMinor: number;
+  investedMinor: number;
+  proceedsMinor: number;
+};
+
+/** Özet: `priceMinor` değerleme fiyatıdır (Faz 0: varlıklar alış fiyatıyla). */
+export function holdingSummary(run: PortfolioRun, priceMinor: number | null): HoldingSummary {
+  const avgCostMinor =
+    run.quantity > 0 ? Math.round((run.costMinor * QUANTITY_SCALE) / run.quantity) : null;
+  const currentValueMinor =
+    priceMinor === null ? null : Math.round((run.quantity * priceMinor) / QUANTITY_SCALE);
+  const unrealizedMinor = currentValueMinor === null ? null : currentValueMinor - run.costMinor;
+  const unrealizedBp =
+    unrealizedMinor === null || run.costMinor <= 0
+      ? null
+      : Math.round((unrealizedMinor * 10_000) / run.costMinor);
+  return {
+    quantity: run.quantity,
+    costMinor: run.costMinor,
+    avgCostMinor,
+    currentValueMinor,
+    unrealizedMinor,
+    unrealizedBp,
+    realizedMinor: run.realizedMinor,
+    investedMinor: run.investedMinor,
+    proceedsMinor: run.proceedsMinor,
+  };
+}
+
+/** Baz puanı "%12,34" / "−%3,5" biçiminde. */
+export function formatBp(bp: number): string {
+  const s = (Math.abs(bp) / 100).toLocaleString("tr-TR", { maximumFractionDigits: 2 });
+  return `${bp < 0 ? "−" : bp > 0 ? "+" : ""}%${s}`;
+}
@@ -0,0 +1,75 @@
+import { z } from "zod";
+import { tr } from "../../i18n/tr";
+import { ASSET_KEYS } from "../assets";
+import { parseMoney } from "../money";
+import { MOVEMENT_KINDS } from "../portfolio";
+import { parseQuantity } from "../quantity";
+
+const v = tr.validation;
+const a = tr.assets.validation;
+const ymd = z.string().regex(/^\d{4}-\d{2}-\d{2}$/, v.date);
+const objectId = z.string().regex(/^[a-f0-9]{24}$/i, tr.transactions.validation.selectAccount);
+const emptyToNull = (x: unknown) => (x === "" || x === undefined ? null : x);
+
+/** Boş → null; dolu → pozitif kuruş. */
+const optionalMoney = z.preprocess(
+  emptyToNull,
+  z
+    .string()
+    .trim()
+    .transform((s, ctx) => {
+      const minor = parseMoney(s);
+      if (minor === null || minor <= 0) {
+        ctx.addIssue({ code: "custom", message: v.money });
+        return z.NEVER;
+      }
+      return minor;
+    })
+    .nullable(),
+);
+
+/** Varlık (birikim kalemi) formu. */
+export const assetFormSchema = z.object({
+  assetKey: z.enum(ASSET_KEYS),
+  name: z.string().trim().min(1, tr.common.required).max(80, v.nameMax),
+  note: z.string().trim().max(500).default(""),
+  isPrivate: z.boolean().default(false),
+});
+export type AssetFormInput = z.input<typeof assetFormSchema>;
+export type AssetForm = z.output<typeof assetFormSchema>;
+
+/**
+ * Varlık hareketi. Tutar ve birim fiyat isteğe bağlı: tutar varsa birim fiyat ondan, yalnızca
+ * birim fiyat varsa tutar ondan hesaplanır; ikisi de boşsa fiyat tablosu kullanılır
+ * (alım → satış fiyatı, satış ve gelen hediye → alış fiyatı). Hesap yalnızca alım/satışta.
+ */
+export const movementFormSchema = z
+  .object({
+    kind: z.enum(MOVEMENT_KINDS),
+    date: ymd,
+    quantity: z
+      .string()
+      .trim()
+      .transform((s, ctx) => {
+        const q = parseQuantity(s);
+        if (q === null || q <= 0) {
+          ctx.addIssue({ code: "custom", message: tr.inKind.validation.quantity });
+          return z.NEVER;
+        }
+        return q;
+      }),
+    unitPrice: optionalMoney,
+    amount: optionalMoney,
+    accountId: z.preprocess(emptyToNull, objectId.nullable()),
+    storage: z.string().trim().max(120).default(""),
+    note: z.string().trim().max(300).default(""),
+  })
+  .superRefine((x, ctx) => {
+    if ((x.kind === "gift_in" || x.kind === "gift_out") && x.accountId)
+      ctx.addIssue({ code: "custom", path: ["accountId"], message: a.noAccountForGift });
+  })
+  .transform((x) =>
+    x.kind === "gift_out" ? { ...x, unitPrice: null, amount: null, accountId: null } : x,
+  );
+export type MovementFormInput = z.input<typeof movementFormSchema>;
+export type MovementForm = z.output<typeof movementFormSchema>;