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

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

src/features/transactions/service.ts

@@ -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),