Fas 2 steg 3: Household Trust Score (admin + i18n status i appen)

apps/api/src/routes/admin.ts

@@ -1,11 +1,12 @@
 import type { FastifyInstance } from "fastify";
-import { and, desc, eq, ilike, sql } from "drizzle-orm";
+import { and, desc, eq, ilike, isNull, sql } from "drizzle-orm";
 import { schema } from "@app/database";
 import { z } from "zod";
 import { adminGrantInputSchema, totpCodeInputSchema } from "@app/validation";
 import { errors, parse } from "../lib/errors.js";
 import { audit } from "../lib/helpers.js";
 import { generateTotpSecret, otpauthUrl, verifyTotp } from "../lib/totp.js";
+import { householdTrustScore } from "@app/inventory-engine";
 import { BRAND } from "@app/shared-types";
 
 /** Adminpanelens API (spec §57). Alla anrop kräver admin-roll och auditloggas. */
@@ -167,6 +168,58 @@ export async function adminRoutes(app: FastifyInstance) {
     return sub;
   });
 
+  // --- Household trust score (Fas 2 §5.3) ---
+  app.get("/admin/v1/households/:id/trust", admin, async (req) => {
+    const params = z.object({ id: z.uuid() }).parse(req.params);
+
+    const items = await app.db
+      .select()
+      .from(schema.inventoryItems)
+      .where(
+        and(
+          eq(schema.inventoryItems.householdId, params.id),
+          isNull(schema.inventoryItems.depletedAt),
+        ),
+      );
+
+    const thirtyDaysAgo = new Date(Date.now() - 30 * 86_400_000);
+    const txStats = await app.db
+      .select({
+        total: sql<number>`count(*)`,
+        adjustments: sql<number>`count(*) FILTER (WHERE ${schema.inventoryTransactions.type} = 'adjust')`,
+      })
+      .from(schema.inventoryTransactions)
+      .where(
+        and(
+          eq(schema.inventoryTransactions.householdId, params.id),
+          sql`${schema.inventoryTransactions.createdAt} >= ${thirtyDaysAgo}`,
+        ),
+      );
+
+    const result = householdTrustScore(
+      {
+        items: items.map((i) => ({
+          confidence: i.confidence,
+          verifiedByUser: i.verifiedByUser,
+          lastVerifiedAt: i.lastVerifiedAt,
+          quantity: i.quantity,
+          updatedAt: i.updatedAt,
+          depletedAt: i.depletedAt,
+        })),
+        correctionCount30d: Number(txStats[0]?.adjustments ?? 0),
+        transactionCount30d: Number(txStats[0]?.total ?? 0),
+      },
+      new Date(),
+    );
+
+    return {
+      householdId: params.id,
+      score: result.score,
+      status: result.status,
+      itemCount: items.length,
+    };
+  });
+
   // --- Jobb & systemhälsa (spec §57–58) ---
   app.get("/admin/v1/jobs/overview", admin, async () => {
     const scanStats = await app.db

apps/api/src/routes/inventory.ts

@@ -1,5 +1,5 @@
 import type { FastifyInstance } from "fastify";
-import { and, desc, eq, gt, ilike, isNull, or } from "drizzle-orm";
+import { and, desc, eq, gt, ilike, isNull, or, sql } from "drizzle-orm";
 import { schema } from "@app/database";
 import {
   createInventoryItemInputSchema,
@@ -8,9 +8,20 @@ import {
   inventoryTransactionInputSchema,
   updateInventoryItemInputSchema,
 } from "@app/validation";
-import { classifyExpiry, findDuplicateCandidates, normalizeDelta, computeTrust } from "@app/inventory-engine";
+import {
+  classifyExpiry,
+  findDuplicateCandidates,
+  normalizeDelta,
+  computeTrust,
+  householdTrustScore,
+} from "@app/inventory-engine";
 import { errors, parse } from "../lib/errors.js";
-import { emitEvent, getActiveDecayProfile, requireActiveHousehold, requireMembership } from "../lib/helpers.js";
+import {
+  emitEvent,
+  getActiveDecayProfile,
+  requireActiveHousehold,
+  requireMembership,
+} from "../lib/helpers.js";
 
 /**
  * Food Twin – lagret (spec §8). Transaktionsbaserat: varje förändring skrivs
@@ -98,7 +109,34 @@ export async function inventoryRoutes(app: FastifyInstance) {
     const filtered = query.expiryStatus
       ? items.filter((i) => i.expiry.status === query.expiryStatus)
       : items;
-    return { items: filtered };
+
+    const thirtyDaysAgo = new Date(Date.now() - 30 * 86_400_000);
+    const txStats = await app.db
+      .select({
+        total: sql<number>`count(*)`,
+        adjustments: sql<number>`count(*) FILTER (WHERE ${schema.inventoryTransactions.type} = 'adjust')`,
+      })
+      .from(schema.inventoryTransactions)
+      .where(
+        and(
+          eq(schema.inventoryTransactions.householdId, householdId),
+          sql`${schema.inventoryTransactions.createdAt} >= ${thirtyDaysAgo}`,
+        ),
+      );
+
+    const householdTrust = householdTrustScore(
+      {
+        items: rows.map((r) => r.item),
+        correctionCount30d: Number(txStats[0]?.adjustments ?? 0),
+        transactionCount30d: Number(txStats[0]?.total ?? 0),
+      },
+      new Date(),
+    );
+
+    return {
+      items: filtered,
+      trustStatus: householdTrust.status,
+    };
   });
 
   /** Varor som bör användas snart – driver "använd först" (spec §4.4, §40). */

apps/api/test/admin-trust.test.ts

@@ -0,0 +1,83 @@
+import "./setup-env.js";
+import { describe, expect, it, beforeAll, afterAll } from "vitest";
+import { eq, inArray } from "drizzle-orm";
+import { buildServer } from "../src/server.js";
+import { loadConfig } from "../src/config.js";
+import { createDatabase, closeDatabase, schema } from "@app/database";
+
+describe("admin household trust score", () => {
+  const testDb = createDatabase(process.env.TEST_DATABASE_URL!);
+  const config = loadConfig();
+  let app: Awaited<ReturnType<typeof buildServer>>;
+  let adminToken: string;
+  let householdId: string;
+  const adminEmail = "admin-trust@example.invalid";
+
+  async function cleanup() {
+    const existing = await testDb.db
+      .select({ id: schema.users.id })
+      .from(schema.users)
+      .where(inArray(schema.users.email, [adminEmail]));
+    for (const u of existing) {
+      await testDb.db.delete(schema.inventoryTransactions).where(eq(schema.inventoryTransactions.actorUserId, u.id));
+      const owned = await testDb.db
+        .select({ id: schema.households.id })
+        .from(schema.households)
+        .innerJoin(schema.householdMembers, eq(schema.householdMembers.householdId, schema.households.id))
+        .where(eq(schema.householdMembers.userId, u.id));
+      for (const h of owned) {
+        await testDb.db.delete(schema.inventoryItems).where(eq(schema.inventoryItems.householdId, h.id));
+        await testDb.db.delete(schema.storageLocations).where(eq(schema.storageLocations.householdId, h.id));
+        await testDb.db.delete(schema.households).where(eq(schema.households.id, h.id));
+      }
+      await testDb.db.delete(schema.householdMembers).where(eq(schema.householdMembers.userId, u.id));
+      await testDb.db.delete(schema.userPreferences).where(eq(schema.userPreferences.userId, u.id));
+      await testDb.db.delete(schema.users).where(eq(schema.users.id, u.id));
+    }
+  }
+
+  beforeAll(async () => {
+    await cleanup();
+    app = await buildServer(config);
+    await app.ready();
+
+    const res = await app.inject({
+      method: "POST",
+      url: "/v1/auth/register",
+      payload: { email: adminEmail, password: "Password123!", displayName: "Admin Trust" },
+    });
+    const body = JSON.parse(res.body) as { accessToken: string };
+    adminToken = body.accessToken;
+    const userId = (JSON.parse(atob(adminToken.split(".")[1]!)) as { sub: string }).sub;
+
+    await testDb.db.update(schema.users).set({ role: "admin" }).where(eq(schema.users.id, userId));
+
+    const quick = await app.inject({
+      method: "POST",
+      url: "/v1/onboarding/quick-start",
+      headers: { authorization: `Bearer ${adminToken}` },
+      payload: { goals: ["cook_more"], precisionMode: "simple" },
+    });
+    householdId = (JSON.parse(quick.body) as { householdId: string }).householdId;
+  });
+
+  afterAll(async () => {
+    await cleanup();
+    await closeDatabase();
+    await app.close();
+  });
+
+  it("returns numeric score and status for admin", async () => {
+    const res = await app.inject({
+      method: "GET",
+      url: `/admin/v1/households/${householdId}/trust`,
+      headers: { authorization: `Bearer ${adminToken}` },
+    });
+    expect(res.statusCode).toBe(200);
+    const body = JSON.parse(res.body) as { householdId: string; score: number; status: string; itemCount: number };
+    expect(body.householdId).toBe(householdId);
+    expect(typeof body.score).toBe("number");
+    expect(["up_to_date", "needs_check", "uncertain"]).toContain(body.status);
+    expect(body.itemCount).toBe(0);
+  });
+});

apps/mobile/src/app/(tabs)/home.tsx

@@ -40,7 +40,7 @@ interface BudgetSummary {
 export default function HomeScreen() {
   const inventory = useQuery({
     queryKey: ["inventory"],
-    queryFn: () => api<{ items: InventoryItem[] }>("/v1/inventory?limit=100"),
+    queryFn: () => api<{ items: InventoryItem[]; trustStatus?: "up_to_date" | "needs_check" | "uncertain" }>("/v1/inventory?limit=100"),
   });
   const expiring = useQuery({
     queryKey: ["inventory-expiring"],
@@ -64,9 +64,16 @@ export default function HomeScreen() {
     grouped.set(item.locationName, list);
   }
 
+  const trustStatus = inventory.data?.trustStatus;
+
   return (
     <Screen>
       <Title>{t("home.title")}</Title>
+      {trustStatus && (
+        <Small style={{ marginBottom: spacing.xs, opacity: 0.8 }}>
+          {t(`home.trustStatus.${trustStatus}`)}
+        </Small>
+      )}
 
       <Row>
         <QuickLink label={t("home.shopping")} glyph="🛒" onPress={() => router.push("/shopping")} />

apps/mobile/src/components/ui.tsx

@@ -9,6 +9,7 @@ import {
   View,
   type StyleProp,
   type TextInputProps,
+  type TextStyle,
   type ViewStyle,
 } from "react-native";
 import { SafeAreaView } from "react-native-safe-area-context";
@@ -46,8 +47,8 @@ export function Heading({ children }: { children: ReactNode }) {
 export function Body({ children, muted = false }: { children: ReactNode; muted?: boolean }) {
   return <Text style={[typography.body, muted && { color: colors.textMuted }]}>{children}</Text>;
 }
-export function Small({ children }: { children: ReactNode }) {
+export function Small({ children, style }: { children: ReactNode; style?: StyleProp<TextStyle> }) {
-  return <Text style={typography.small}>{children}</Text>;
+  return <Text style={[typography.small, style]}>{children}</Text>;
 }
 
 export function Card({

apps/mobile/src/locales/da/common.json

@@ -346,5 +346,8 @@
   "wte.subtitle": "Ud fra hvad I har derhjemme, hvad der snart skal bruges, og hvad I kan lide.",
   "wte.title": "Hvad skal vi spise?",
   "wte.whyTitle": "Hvorfor dette forslag?",
-  "onboarding.primaryGoal": "Primært"
+  "onboarding.primaryGoal": "Primært",
+  "home.trustStatus.up_to_date": "Opdateret",
+  "home.trustStatus.needs_check": "Nogle varer skal tjekkes",
+  "home.trustStatus.uncertain": "Lageret er usikkert – lav en hurtig tjek"
 }

apps/mobile/src/locales/de/common.json

@@ -346,5 +346,8 @@
   "wte.subtitle": "Basierend auf dem, was ihr zuhause habt, was bald verbraucht werden sollte und was ihr mögt.",
   "wte.title": "Was essen wir?",
   "wte.whyTitle": "Warum dieser Vorschlag?",
-  "onboarding.primaryGoal": "Primär"
+  "onboarding.primaryGoal": "Primär",
+  "home.trustStatus.up_to_date": "Aktuell",
+  "home.trustStatus.needs_check": "Einige Artikel müssen geprüft werden",
+  "home.trustStatus.uncertain": "Bestand unsicher – schnelle Kontrolle empfohlen"
 }

apps/mobile/src/locales/en/common.json

@@ -346,5 +346,8 @@
   "wte.subtitle": "Based on what you have at home, what should be used up, and what you like.",
   "wte.title": "What's for dinner?",
   "wte.whyTitle": "Why this suggestion?",
-  "onboarding.primaryGoal": "Primary"
+  "onboarding.primaryGoal": "Primary",
+  "home.trustStatus.up_to_date": "Up to date",
+  "home.trustStatus.needs_check": "Some items need checking",
+  "home.trustStatus.uncertain": "Inventory uncertain – do a quick check"
 }

apps/mobile/src/locales/es/common.json

@@ -346,5 +346,8 @@
   "wte.subtitle": "Según lo que tenéis en casa, lo que conviene usar pronto y lo que os gusta.",
   "wte.title": "¿Qué comemos?",
   "wte.whyTitle": "¿Por qué esta sugerencia?",
-  "onboarding.primaryGoal": "Principal"
+  "onboarding.primaryGoal": "Principal",
+  "home.trustStatus.up_to_date": "Actualizado",
+  "home.trustStatus.needs_check": "Algunos productos necesitan revisión",
+  "home.trustStatus.uncertain": "Inventario incierto – haz una revisión rápida"
 }

apps/mobile/src/locales/fi/common.json

@@ -346,5 +346,8 @@
   "wte.subtitle": "Sen mukaan mitä kotona on, mikä pitäisi käyttää pian ja mistä pidätte.",
   "wte.title": "Mitä syödään?",
   "wte.whyTitle": "Miksi tämä ehdotus?",
-  "onboarding.primaryGoal": "Ensisijainen"
+  "onboarding.primaryGoal": "Ensisijainen",
+  "home.trustStatus.up_to_date": "Ajan tasalla",
+  "home.trustStatus.needs_check": "Joitakin tuotteita on tarkistettava",
+  "home.trustStatus.uncertain": "Varasto epävarma – tee pikatarkistus"
 }

apps/mobile/src/locales/fr/common.json

@@ -346,5 +346,8 @@
   "wte.subtitle": "Selon ce que vous avez chez vous, ce qu'il faut consommer vite et vos goûts.",
   "wte.title": "On mange quoi ?",
   "wte.whyTitle": "Pourquoi cette suggestion ?",
-  "onboarding.primaryGoal": "Principal"
+  "onboarding.primaryGoal": "Principal",
+  "home.trustStatus.up_to_date": "À jour",
+  "home.trustStatus.needs_check": "Certains articles doivent être vérifiés",
+  "home.trustStatus.uncertain": "Inventaire incertain – faites un rapide contrôle"
 }

apps/mobile/src/locales/it/common.json

@@ -346,5 +346,8 @@
   "wte.subtitle": "In base a ciò che avete in casa, a cosa va consumato presto e ai vostri gusti.",
   "wte.title": "Cosa mangiamo?",
   "wte.whyTitle": "Perché questo suggerimento?",
-  "onboarding.primaryGoal": "Primario"
+  "onboarding.primaryGoal": "Primario",
+  "home.trustStatus.up_to_date": "Aggiornato",
+  "home.trustStatus.needs_check": "Alcuni articoli devono essere controllati",
+  "home.trustStatus.uncertain": "Inventario incerto – fai un controllo rapido"
 }

apps/mobile/src/locales/nb/common.json

@@ -346,5 +346,8 @@
   "wte.subtitle": "Basert på hva dere har hjemme, hva som snart bør brukes, og hva dere liker.",
   "wte.title": "Hva skal vi spise?",
   "wte.whyTitle": "Hvorfor dette forslaget?",
-  "onboarding.primaryGoal": "Primært"
+  "onboarding.primaryGoal": "Primært",
+  "home.trustStatus.up_to_date": "Oppdatert",
+  "home.trustStatus.needs_check": "Noen varer må sjekkes",
+  "home.trustStatus.uncertain": "Lageret er usikkert – gjør en rask sjekk"
 }

apps/mobile/src/locales/nl/common.json

@@ -346,5 +346,8 @@
   "wte.subtitle": "Op basis van wat jullie in huis hebben, wat snel op moet en wat jullie lekker vinden.",
   "wte.title": "Wat eten we?",
   "wte.whyTitle": "Waarom deze suggestie?",
-  "onboarding.primaryGoal": "Primair"
+  "onboarding.primaryGoal": "Primair",
+  "home.trustStatus.up_to_date": "Bijgewerkt",
+  "home.trustStatus.needs_check": "Sommige items moeten worden gecontroleerd",
+  "home.trustStatus.uncertain": "Voorraad onzeker – doe een snelle controle"
 }

apps/mobile/src/locales/pl/common.json

@@ -360,5 +360,8 @@
   "wte.subtitle": "Na podstawie tego, co macie w domu, co trzeba wkrótce zużyć i co lubicie.",
   "wte.title": "Co jemy?",
   "wte.whyTitle": "Dlaczego ta propozycja?",
-  "onboarding.primaryGoal": "Główny"
+  "onboarding.primaryGoal": "Główny",
+  "home.trustStatus.up_to_date": "Aktualne",
+  "home.trustStatus.needs_check": "Niektóre produkty wymagają sprawdzenia",
+  "home.trustStatus.uncertain": "Stan niepewny – zrób szybką kontrolę"
 }

apps/mobile/src/locales/pt/common.json

@@ -346,5 +346,8 @@
   "wte.subtitle": "Com base no que têm em casa, no que deve ser usado em breve e no que gostam.",
   "wte.title": "O que vamos comer?",
   "wte.whyTitle": "Porquê esta sugestão?",
-  "onboarding.primaryGoal": "Principal"
+  "onboarding.primaryGoal": "Principal",
+  "home.trustStatus.up_to_date": "Atualizado",
+  "home.trustStatus.needs_check": "Alguns itens precisam de verificação",
+  "home.trustStatus.uncertain": "Inventário incerto – faça uma verificação rápida"
 }

apps/mobile/src/locales/sv/common.json

@@ -346,5 +346,8 @@
   "wte.subtitle": "Utifrån vad ni har hemma, vad som bör användas och vad ni gillar.",
   "wte.title": "Vad ska vi äta?",
   "wte.whyTitle": "Varför detta förslag?",
-  "onboarding.primaryGoal": "Primärt"
+  "onboarding.primaryGoal": "Primärt",
+  "home.trustStatus.up_to_date": "Uppdaterat",
+  "home.trustStatus.needs_check": "Några varor behöver kontrolleras",
+  "home.trustStatus.uncertain": "Lagret är osäkert – gör en snabbkoll"
 }

apps/worker/src/index.ts

@@ -210,7 +210,7 @@ async function registerRepeatableJobs() {
   );
   await queue.upsertJobScheduler(
     "scheduler-trust",
-    { every: 300_000 },
+    { every: 6 * 60 * 60 * 1000 }, // var 6:e timme; decay lever på dygnsskala
     { name: "UPDATE_TRUST_STATES", data: { jobType: "UPDATE_TRUST_STATES" }, opts: baseOpts },
   );
   await queue.upsertJobScheduler(

apps/worker/src/processors/maintenance.ts

@@ -1,4 +1,4 @@
-import { and, eq, gt, inArray, isNull, lte, sql } from "drizzle-orm";
+import { and, asc, eq, gt, inArray, isNull, lte, sql } from "drizzle-orm";
 import { schema } from "@app/database";
 import { classifyExpiry, computeTrust } from "@app/inventory-engine";
 import { deriveMemoryUpdates } from "@app/memory-client";
@@ -57,6 +57,7 @@ export async function processTrustDecay(ctx: WorkerContext): Promise<number> {
     .select()
     .from(schema.inventoryItems)
     .where(and(isNull(schema.inventoryItems.depletedAt), gt(schema.inventoryItems.quantity, 0)))
+    .orderBy(asc(schema.inventoryItems.updatedAt))
     .limit(500);
 
   let updated = 0;

packages/inventory-engine/src/trust.ts

@@ -19,6 +19,7 @@ export interface InventoryItemLike {
   lastVerifiedAt: Date | string | null;
   quantity: number;
   updatedAt: Date | string;
+  depletedAt?: Date | string | null;
 }
 
 export interface TrustResult {
@@ -118,6 +119,103 @@ export function itemTrustState(
   return computeTrust(item, now, profile).state;
 }
 
+export interface HouseholdTrustInput {
+  items: InventoryItemLike[];
+  /** Antal justeringstransaktioner senaste 30 dagarna (korrigeringsfrekvens). */
+  correctionCount30d: number;
+  /** Totalt antal transaktioner senaste 30 dagarna (används för korrigeringsfrekvens). */
+  transactionCount30d: number;
+}
+
+export interface HouseholdTrustResult {
+  score: number; // 0–100
+  status: "up_to_date" | "needs_check" | "uncertain";
+}
+
+export const TRUST_STATUS_THRESHOLDS = {
+  upToDate: 80,
+  needsCheck: 50,
+} as const;
+
+/**
+ * Deterministisk household trust score 0–100.
+ *
+ * Viktade komponenter (Fas 2 §5.3):
+ * - 25% verifierade poster (verifiedByUser)
+ * - 25% ålder på senaste kontroll (nyare = bättre)
+ * - 20% andel uppskattade mängder (lägre confidence ger mer osäkerhet)
+ * - 15% poster som borde vara slut (låg quantity utan depletedAt straffar)
+ * - 15% korrigeringsfrekvens (fler korrigeringar = lägre förtroende)
+ *
+ * Decay påverkar FORTROENDE, inte ätbarhet.
+ */
+export function householdTrustScore(
+  input: HouseholdTrustInput,
+  now: Date = new Date(),
+): HouseholdTrustResult {
+  const items = input.items.filter((i) => i.quantity > 0 && !i.depletedAt);
+  if (items.length === 0) {
+    return { score: 100, status: "up_to_date" };
+  }
+
+  const nowMs = now.getTime();
+
+  // 1. Andel verifierade (0–100)
+  const verifiedRatio = items.filter((i) => i.verifiedByUser).length / items.length;
+  const verifiedScore = verifiedRatio * 100;
+
+  // 2. Ålder på senaste kontroll (0–100, 100 = alla kontrollerade inom 7 dagar)
+  const ageScore =
+    items.reduce((sum, i) => {
+      const verifiedMs = i.lastVerifiedAt ? new Date(i.lastVerifiedAt).getTime() : null;
+      const referenceMs = verifiedMs ?? new Date(i.updatedAt).getTime();
+      const days = Math.max(0, (nowMs - referenceMs) / 86_400_000);
+      return sum + Math.max(0, 100 - (days / 30) * 100);
+    }, 0) / items.length;
+
+  // 3. Andel uppskattade mängder (0–100, 100 = alla har confidence 1)
+  const confidenceScore =
+    items.reduce((sum, i) => sum + Math.min(1, Math.max(0, i.confidence)), 0) / items.length * 100;
+
+  // 4. Poster som borde vara slut (0–100, 100 = inga låga kvantiteter)
+  const depletionScore =
+    items.reduce((sum, i) => {
+      const qty = i.quantity;
+      if (qty <= 0) return sum + 0;
+      if (qty < 0.2) return sum + 40;
+      if (qty < 0.5) return sum + 70;
+      return sum + 100;
+    }, 0) / items.length;
+
+  // 5. Korrigeringsfrekvens (0–100, 100 = inga korrigeringar)
+  const correctionRatio =
+    input.transactionCount30d > 0
+      ? input.correctionCount30d / input.transactionCount30d
+      : 0;
+  const correctionScore = Math.max(0, 100 - correctionRatio * 200);
+
+  const score = Math.round(
+    verifiedScore * 0.25 +
+      ageScore * 0.25 +
+      confidenceScore * 0.20 +
+      depletionScore * 0.15 +
+      correctionScore * 0.15,
+  );
+
+  const clamped = Math.max(0, Math.min(100, score));
+
+  let status: HouseholdTrustResult["status"];
+  if (clamped >= TRUST_STATUS_THRESHOLDS.upToDate) {
+    status = "up_to_date";
+  } else if (clamped >= TRUST_STATUS_THRESHOLDS.needsCheck) {
+    status = "needs_check";
+  } else {
+    status = "uncertain";
+  }
+
+  return { score: clamped, status };
+}
+
 /** Pick the most urgent trust state from a list (used for household summary). */
 export function worstTrustState(states: TrustState[]): TrustState {
   const order: TrustState[] = ["stale", "decaying", "unverified", "trusted"];

packages/inventory-engine/test/trust.test.ts

@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { applyDecay, computeTrust, worstTrustState } from "../src/trust.js";
+import { applyDecay, computeTrust, householdTrustScore, worstTrustState } from "../src/trust.js";
 
 const PINNED = new Date("2026-08-06T12:00:00.000Z");
 
@@ -96,6 +96,62 @@ describe("computeTrust", () => {
   });
 });
 
+describe("householdTrustScore", () => {
+  it("returns 100 / up_to_date for empty inventory", () => {
+    const result = householdTrustScore({ items: [], correctionCount30d: 0, transactionCount30d: 0 }, PINNED);
+    expect(result.score).toBe(100);
+    expect(result.status).toBe("up_to_date");
+  });
+
+  it("scores high when all items are verified and recent", () => {
+    const result = householdTrustScore(
+      {
+        items: [
+          { confidence: 1, verifiedByUser: true, lastVerifiedAt: PINNED, quantity: 2, updatedAt: PINNED },
+          { confidence: 1, verifiedByUser: true, lastVerifiedAt: PINNED, quantity: 3, updatedAt: PINNED },
+        ],
+        correctionCount30d: 0,
+        transactionCount30d: 0,
+      },
+      PINNED,
+    );
+    expect(result.score).toBeGreaterThanOrEqual(80);
+    expect(result.status).toBe("up_to_date");
+  });
+
+  it("drops to uncertain when items are old and unverified", () => {
+    const old = new Date(PINNED.getTime() - 60 * 86_400_000);
+    const result = householdTrustScore(
+      {
+        items: [
+          { confidence: 0.3, verifiedByUser: false, lastVerifiedAt: null, quantity: 0.1, updatedAt: old },
+        ],
+        correctionCount30d: 5,
+        transactionCount30d: 10,
+      },
+      PINNED,
+    );
+    expect(result.status).toBe("uncertain");
+    expect(result.score).toBeLessThan(50);
+  });
+
+  it("flags needs_check for partly verified household", () => {
+    const weekAgo = new Date(PINNED.getTime() - 7 * 86_400_000);
+    const result = householdTrustScore(
+      {
+        items: [
+          { confidence: 0.8, verifiedByUser: true, lastVerifiedAt: weekAgo, quantity: 1, updatedAt: weekAgo },
+          { confidence: 0.5, verifiedByUser: false, lastVerifiedAt: null, quantity: 1, updatedAt: weekAgo },
+        ],
+        correctionCount30d: 1,
+        transactionCount30d: 5,
+      },
+      PINNED,
+    );
+    expect(result.status).toBe("needs_check");
+  });
+});
+
 describe("worstTrustState", () => {
   it("returns stale if present", () => {
     expect(worstTrustState(["trusted", "stale", "decaying"])).toBe("stale");