fix(inventory): robustare dedup vid skann + borttag pa startsidan

Dedup vid /v1/scans/:id/confirm matchade bara pa exakt (skiftlageskansligt)
namn eller identiskt katalog-id, sa omfotografering av samma hylla skapade
dubbletter. Ny normalizeItemName (gemener, accenter, storlek bort; behaller
fetthalt-siffror) + matchning pa katalog-id ELLER normaliserat namn mot
aktivt hushallslager.

Mobil: 'Ta bort' fanns bara i Ditt kok. Lade borttag pa startsidans
lager-rader (befintlig DELETE /v1/inventory/items/:id).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WZdew6cWn1MeHqoYWFfxzo

apps/api/src/routes/scans.ts

@@ -7,6 +7,7 @@ import { confirmScanInputSchema, createScanInputSchema, idParamSchema } from "@a
 import { errors, parse } from "../lib/errors.js";
 import { emitEvent, requireActiveHousehold } from "../lib/helpers.js";
 import { consumeAiScan } from "../lib/entitlements.js";
+import { normalizeItemName } from "@app/inventory-engine";
 
 /**
  * Skanningsflödet (spec §50):
@@ -141,6 +142,23 @@ export async function scanRoutes(app: FastifyInstance) {
 
     const created: string[] = [];
     const proposals = extractProposals(job);
+
+    // Aktiva varor i hushållet, för dubblett-hopslagning vid bekräftelse.
+    const activeRows = await app.db
+      .select({
+        id: schema.inventoryItems.id,
+        canonicalIngredientId: schema.inventoryItems.canonicalIngredientId,
+        displayName: schema.inventoryItems.displayName,
+      })
+      .from(schema.inventoryItems)
+      .where(
+        and(
+          eq(schema.inventoryItems.householdId, householdId),
+          gt(schema.inventoryItems.quantity, 0),
+        ),
+      );
+    const activeItems = activeRows.map((r) => ({ ...r, norm: normalizeItemName(r.displayName) }));
+
     for (const item of input.items) {
       const proposal = findProposal(proposals, item.tempId);
       await recordCorrection(app, job, item, proposal);
@@ -150,25 +168,17 @@ export async function scanRoutes(app: FastifyInstance) {
       if (!locationId)
         throw errors.badRequest("storageLocationId saknas och ingen standardplats finns.");
 
-      // Dedup (#1): finns varan redan aktiv i hushållet? Uppdatera + hoppa över,
-      // så överlappande foton / omfotografering inte skapar dubletter.
-      const dedupCond = item.canonicalIngredientId
-        ? and(
-            eq(schema.inventoryItems.householdId, householdId),
-            eq(schema.inventoryItems.canonicalIngredientId, item.canonicalIngredientId),
-            gt(schema.inventoryItems.quantity, 0),
-          )
-        : and(
-            eq(schema.inventoryItems.householdId, householdId),
-            isNull(schema.inventoryItems.canonicalIngredientId),
-            eq(schema.inventoryItems.displayName, item.displayName),
-            gt(schema.inventoryItems.quantity, 0),
-          );
-      const [dupe] = await app.db
-        .select({ id: schema.inventoryItems.id })
-        .from(schema.inventoryItems)
-        .where(dedupCond)
-        .limit(1);
+      // Dedup (#1): slå ihop om varan redan finns aktiv i hushållet, så att
+      // överlappande foton / omfotografering av samma hylla inte dubbellagras.
+      // Matcha på katalog-id ELLER normaliserat namn — Vision skriver sällan
+      // exakt samma namn två gånger ("Mjölk" vs "mjölk" vs "Mjölk 1L").
+      const wantNorm = normalizeItemName(item.displayName);
+      const dupe = activeItems.find(
+        (r) =>
+          (item.canonicalIngredientId != null &&
+            r.canonicalIngredientId === item.canonicalIngredientId) ||
+          r.norm === wantNorm,
+      );
       if (dupe) {
         await app.db
           .update(schema.inventoryItems)

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

@@ -1,7 +1,7 @@
-import { Pressable, View } from "react-native";
+import { Alert, Pressable, View } from "react-native";
 import { useCallback } from "react";
 import { router, useFocusEffect } from "expo-router";
-import { useQuery } from "@tanstack/react-query";
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import { api } from "@/lib/api";
 import { useAuth } from "@/lib/auth";
 import { t } from "@/lib/i18n";
@@ -9,6 +9,7 @@ import * as Haptics from "expo-haptics";
 import { formatMinor } from "@/lib/money";
 import {
   Body,
+  Button,
   Card,
   EmptyState,
   ErrorView,
@@ -41,6 +42,18 @@ interface BudgetSummary {
 }
 
 export default function HomeScreen() {
+  const queryClient = useQueryClient();
+  const remove = useMutation({
+    mutationFn: (id: string) => api(`/v1/inventory/items/${id}`, { method: "DELETE" }),
+    onError: (err) =>
+      Alert.alert(t("common.oops"), err instanceof Error ? err.message : t("common.error")),
+    onSettled: () => void queryClient.invalidateQueries({ queryKey: ["inventory"] }),
+  });
+  const confirmRemove = (id: string, name: string) =>
+    Alert.alert("Ta bort", `Ta bort ${name} ur ditt lager?`, [
+      { text: t("common.cancel"), style: "cancel" },
+      { text: "Ta bort", style: "destructive", onPress: () => remove.mutate(id) },
+    ]);
   const inventory = useQuery({
     queryKey: ["inventory"],
     queryFn: () =>
@@ -160,11 +173,18 @@ export default function HomeScreen() {
         <Card key={location}>
           <Heading>{location}</Heading>
           {locationItems.slice(0, 12).map((item) => (
-            <Row key={item.id} style={{ justifyContent: "space-between" }}>
+            <Row key={item.id} style={{ justifyContent: "space-between", alignItems: "center" }}>
               <Body>
                 {item.displayName} · {formatQuantity(item.quantity, item.unit)}
               </Body>
-              <ExpiryTag expiry={item.expiry} />
+              <Row style={{ alignItems: "center" }}>
+                <ExpiryTag expiry={item.expiry} />
+                <Button
+                  label="Ta bort"
+                  variant="ghost"
+                  onPress={() => confirmRemove(item.id, item.displayName)}
+                />
+              </Row>
             </Row>
           ))}
           {locationItems.length > 12 && (

packages/inventory-engine/src/dedup.ts

@@ -21,6 +21,27 @@ export interface DedupCandidate {
 
 const WINDOW_MS = 3 * 86_400_000; // 3 dygn
 
+/**
+ * Normaliserar ett produktnamn för dubblett-matchning: gemener, bort med
+ * accenter/å/ä/ö, storleksangivelser (500 g, 1 l) och skiljetecken — men
+ * BEHÅLL sifferskillnader som skiljer varianter (mjölk 3 % vs 1,5 %).
+ * "Mjölk", "mjölk", "MJÖLK 1L" → "mjolk"; "Mjölk 3%" → "mjolk 3".
+ */
+export function normalizeItemName(name: string): string {
+  return name
+    .normalize("NFC")
+    .toLowerCase()
+    .replace(/[àáâãäå]/g, "a")
+    .replace(/[èéêë]/g, "e")
+    .replace(/[ìíîï]/g, "i")
+    .replace(/[òóôõö]/g, "o")
+    .replace(/[ùúûü]/g, "u")
+    .replace(/\b\d+(?:[.,]\d+)?\s*(?:kg|g|ml|cl|dl|l|st|pack)\b/g, " ")
+    .replace(/[^a-z0-9 ]+/g, " ")
+    .replace(/\s+/g, " ")
+    .trim();
+}
+
 /**
  * Dubblettkandidater mellan kvitto, streckkod och bilder (spec §9).
  * Ren heuristik – användaren fattar alltid beslutet. AI-baserad

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

@@ -6,6 +6,7 @@ import {
   findDuplicateCandidates,
   forecastDepletion,
   normalizeDelta,
+  normalizeItemName,
 } from "../src/index.js";
 
 const TODAY = new Date("2026-08-02T00:00:00Z"); // UTC – testet ska vara sant i alla tidszoner
@@ -217,3 +218,14 @@ describe("pantry forecast (spec §40)", () => {
     );
   });
 });
+
+describe("normalizeItemName (dubblett-matchning vid omfoto)", () => {
+  it("slår ihop skiftläge, accenter och storlek", () => {
+    expect(normalizeItemName("Mjölk")).toBe(normalizeItemName("mjölk"));
+    expect(normalizeItemName("MJÖLK 1L")).toBe(normalizeItemName("Mjölk"));
+    expect(normalizeItemName("Vispgrädde 5 dl")).toBe(normalizeItemName("vispgrädde"));
+  });
+  it("håller isär olika fetthalt/varianter", () => {
+    expect(normalizeItemName("Mjölk 3%")).not.toBe(normalizeItemName("Mjölk 1,5%"));
+  });
+});