chore: bump package.json + package-lock auf 1.4.2

Patch-Release: Einkaufsliste-Konsolidierung ueber Einheiten (500 g + 1 kg
Kartoffeln → 1,5 kg). Migration 015 fuer Check-Key-Family-Stabilitaet.
formatQuantity app-weit auf de-DE Komma-Dezimal.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.gitignore

@@ -9,3 +9,5 @@ test-results/
 playwright-report/
 playwright-report-remote/
 .playwright-mcp/
+.claude/
+ci-log.txt

docs/superpowers/plans/2026-04-22-einkaufsliste-konsolidierung.md

@@ -0,0 +1,887 @@
+# Einkaufsliste Mengen-Konsolidierung Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Verschiedene Unit-Varianten derselben Zutat (500 g + 1 kg Kartoffeln) in der Einkaufsliste zu einer Zeile konsolidieren (→ 1,5 kg). Scope: g↔kg, ml↔l.
+
+**Architecture:** Zwei reine TS-Utilities (`unitFamily`, `consolidate`) kapseln die Logik. `listShoppingList()` lässt SQL weiterhin pro (name, unit) aggregieren, bündelt die Zeilen dann in TS pro `(name, unitFamily)` und konsolidiert. Migration 015 macht `shopping_cart_check.unit_key` zum Family-Key, damit Abhaks nicht verloren gehen wenn Display-Unit zwischen g und kg wechselt. `formatQuantity` wechselt app-weit auf `toLocaleString('de-DE')` (Komma als Dezimaltrennzeichen).
+
+**Tech Stack:** SvelteKit, better-sqlite3, Vitest. Keine neuen Deps.
+
+---
+
+## File Structure
+
+**Create:**
+- `src/lib/server/shopping/unit-consolidation.ts` — `unitFamily()` + `consolidate()`
+- `src/lib/server/db/migrations/015_shopping_check_family.sql` — Family-Key-Migration
+- `tests/unit/unit-consolidation.test.ts` — Unit-Tests
+
+**Modify:**
+- `src/lib/quantity-format.ts` — `toLocaleString('de-DE', …)` statt Punkt
+- `tests/unit/quantity-format.test.ts` — Erwartungen auf Komma anpassen
+- `src/lib/server/shopping/repository.ts` — `listShoppingList`, `toggleCheck`, `clearCheckedItems` auf Family-Key umstellen
+- `tests/integration/shopping-repository.test.ts` — neue Describe-Blöcke für Konsolidierung
+
+---
+
+### Task 1: Unit-Family-Utility
+
+**Files:**
+- Create: `src/lib/server/unit-consolidation.ts`
+- Test: `tests/unit/unit-consolidation.test.ts`
+
+Hinweis: Datei bewusst in `src/lib/server/` (nicht in `shopping/`), weil `unitFamily` auch vom Migration-Code referenziert wird — eine Ebene höher ist intuitiver.
+
+- [ ] **Step 1: Write failing tests for `unitFamily`**
+
+Create `tests/unit/unit-consolidation.test.ts`:
+
+```typescript
+import { describe, it, expect } from 'vitest';
+import { unitFamily } from '../../src/lib/server/unit-consolidation';
+
+describe('unitFamily', () => {
+  it('maps g and kg to weight', () => {
+    expect(unitFamily('g')).toBe('weight');
+    expect(unitFamily('kg')).toBe('weight');
+  });
+  it('maps ml and l to volume', () => {
+    expect(unitFamily('ml')).toBe('volume');
+    expect(unitFamily('l')).toBe('volume');
+  });
+  it('lowercases and trims unknown units', () => {
+    expect(unitFamily(' Bund ')).toBe('bund');
+    expect(unitFamily('TL')).toBe('tl');
+    expect(unitFamily('Stück')).toBe('stück');
+  });
+  it('is case-insensitive for weight/volume', () => {
+    expect(unitFamily('Kg')).toBe('weight');
+    expect(unitFamily('ML')).toBe('volume');
+  });
+  it('returns empty string for null/undefined/empty', () => {
+    expect(unitFamily(null)).toBe('');
+    expect(unitFamily(undefined)).toBe('');
+    expect(unitFamily('')).toBe('');
+    expect(unitFamily('   ')).toBe('');
+  });
+});
+```
+
+- [ ] **Step 2: Run tests to verify they fail**
+
+Run: `npm test -- tests/unit/unit-consolidation.test.ts`
+Expected: All fail with "Cannot find module …/unit-consolidation".
+
+- [ ] **Step 3: Implement `unitFamily`**
+
+Create `src/lib/server/unit-consolidation.ts`:
+
+```typescript
+export type UnitFamily = 'weight' | 'volume' | string;
+
+const WEIGHT_UNITS = new Set(['g', 'kg']);
+const VOLUME_UNITS = new Set(['ml', 'l']);
+
+export function unitFamily(unit: string | null | undefined): UnitFamily {
+  const u = (unit ?? '').trim().toLowerCase();
+  if (WEIGHT_UNITS.has(u)) return 'weight';
+  if (VOLUME_UNITS.has(u)) return 'volume';
+  return u;
+}
+```
+
+- [ ] **Step 4: Run tests to verify they pass**
+
+Run: `npm test -- tests/unit/unit-consolidation.test.ts`
+Expected: 5 tests pass.
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/lib/server/unit-consolidation.ts tests/unit/unit-consolidation.test.ts
+git commit -m "feat(shopping): unitFamily-Utility fuer Konsolidierung"
+```
+
+---
+
+### Task 2: Consolidate-Funktion
+
+**Files:**
+- Modify: `src/lib/server/unit-consolidation.ts`
+- Modify: `tests/unit/unit-consolidation.test.ts`
+
+- [ ] **Step 1: Append failing tests for `consolidate` to the existing test file**
+
+Append to `tests/unit/unit-consolidation.test.ts` (after the `unitFamily` describe):
+
+```typescript
+import { consolidate } from '../../src/lib/server/unit-consolidation';
+
+describe('consolidate', () => {
+  it('kombiniert 500 g + 1 kg zu 1,5 kg', () => {
+    const out = consolidate([
+      { quantity: 500, unit: 'g' },
+      { quantity: 1, unit: 'kg' }
+    ]);
+    expect(out).toEqual({ quantity: 1.5, unit: 'kg' });
+  });
+
+  it('bleibt bei g wenn Summe < 1 kg', () => {
+    const out = consolidate([
+      { quantity: 200, unit: 'g' },
+      { quantity: 300, unit: 'g' }
+    ]);
+    expect(out).toEqual({ quantity: 500, unit: 'g' });
+  });
+
+  it('kombiniert ml + l analog (400 ml + 0,5 l → 900 ml)', () => {
+    const out = consolidate([
+      { quantity: 400, unit: 'ml' },
+      { quantity: 0.5, unit: 'l' }
+    ]);
+    expect(out).toEqual({ quantity: 900, unit: 'ml' });
+  });
+
+  it('promoted zu l ab 1000 ml (0,5 l + 0,8 l → 1,3 l)', () => {
+    const out = consolidate([
+      { quantity: 0.5, unit: 'l' },
+      { quantity: 0.8, unit: 'l' }
+    ]);
+    expect(out).toEqual({ quantity: 1.3, unit: 'l' });
+  });
+
+  it('summiert gleiche nicht-family-units (2 Bund + 1 Bund → 3 Bund)', () => {
+    const out = consolidate([
+      { quantity: 2, unit: 'Bund' },
+      { quantity: 1, unit: 'Bund' }
+    ]);
+    expect(out).toEqual({ quantity: 3, unit: 'Bund' });
+  });
+
+  it('behandelt quantity=null als 0', () => {
+    const out = consolidate([
+      { quantity: null, unit: 'TL' },
+      { quantity: 1, unit: 'TL' }
+    ]);
+    expect(out).toEqual({ quantity: 1, unit: 'TL' });
+  });
+
+  it('gibt null zurueck wenn alle quantities null sind', () => {
+    const out = consolidate([
+      { quantity: null, unit: 'Prise' },
+      { quantity: null, unit: 'Prise' }
+    ]);
+    expect(out).toEqual({ quantity: null, unit: 'Prise' });
+  });
+
+  it('rundet Float-Artefakte auf 2 Dezimalen (0,1 + 0,2 kg → 0,3 kg)', () => {
+    const out = consolidate([
+      { quantity: 0.1, unit: 'kg' },
+      { quantity: 0.2, unit: 'kg' }
+    ]);
+    // 0.1 + 0.2 in kg = 0.3 kg, in g = 300 → promoted? 300 < 1000 → 300 g
+    expect(out).toEqual({ quantity: 300, unit: 'g' });
+  });
+
+  it('nimmt unit vom ersten Eintrag bei unbekannter family', () => {
+    const out = consolidate([{ quantity: 5, unit: 'Stück' }]);
+    expect(out).toEqual({ quantity: 5, unit: 'Stück' });
+  });
+});
+```
+
+- [ ] **Step 2: Run tests to verify they fail**
+
+Run: `npm test -- tests/unit/unit-consolidation.test.ts`
+Expected: Fail with "consolidate is not a function" or similar (9 new tests fail).
+
+- [ ] **Step 3: Implement `consolidate`**
+
+Append to `src/lib/server/unit-consolidation.ts`:
+
+```typescript
+export interface QuantityInUnit {
+  quantity: number | null;
+  unit: string | null;
+}
+
+function round2(n: number): number {
+  return Math.round(n * 100) / 100;
+}
+
+/**
+ * Konsolidiert mehrere {quantity, unit}-Eintraege derselben Unit-Family
+ * zu einer gemeinsamen Menge + Display-Unit.
+ *
+ * - Gewicht (g, kg): summiert in g, promoted bei >=1000 g auf kg.
+ * - Volumen (ml, l): summiert in ml, promoted bei >=1000 ml auf l.
+ * - Andere: summiert quantity ohne Umrechnung, Display-Unit vom ersten
+ *   Eintrag.
+ *
+ * quantity=null wird als 0 behandelt. Wenn ALLE quantities null sind,
+ * ist die Gesamtmenge ebenfalls null.
+ */
+export function consolidate(rows: QuantityInUnit[]): QuantityInUnit {
+  if (rows.length === 0) return { quantity: null, unit: null };
+
+  const family = unitFamily(rows[0].unit);
+  const firstUnit = rows[0].unit;
+
+  const allNull = rows.every((r) => r.quantity === null);
+
+  if (family === 'weight') {
+    if (allNull) return { quantity: null, unit: firstUnit };
+    const grams = rows.reduce((sum, r) => {
+      const q = r.quantity ?? 0;
+      return sum + (unitFamily(r.unit) === 'weight' && r.unit?.toLowerCase().trim() === 'kg' ? q * 1000 : q);
+    }, 0);
+    if (grams >= 1000) return { quantity: round2(grams / 1000), unit: 'kg' };
+    return { quantity: round2(grams), unit: 'g' };
+  }
+
+  if (family === 'volume') {
+    if (allNull) return { quantity: null, unit: firstUnit };
+    const ml = rows.reduce((sum, r) => {
+      const q = r.quantity ?? 0;
+      return sum + (r.unit?.toLowerCase().trim() === 'l' ? q * 1000 : q);
+    }, 0);
+    if (ml >= 1000) return { quantity: round2(ml / 1000), unit: 'l' };
+    return { quantity: round2(ml), unit: 'ml' };
+  }
+
+  // Non-family: summiere quantity direkt
+  if (allNull) return { quantity: null, unit: firstUnit };
+  const sum = rows.reduce((acc, r) => acc + (r.quantity ?? 0), 0);
+  return { quantity: round2(sum), unit: firstUnit };
+}
+```
+
+- [ ] **Step 4: Run tests to verify they pass**
+
+Run: `npm test -- tests/unit/unit-consolidation.test.ts`
+Expected: 14 tests pass (5 from Task 1 + 9 new).
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/lib/server/unit-consolidation.ts tests/unit/unit-consolidation.test.ts
+git commit -m "feat(shopping): consolidate() fuer g/kg + ml/l Summierung"
+```
+
+---
+
+### Task 3: formatQuantity auf deutsches Locale
+
+**Files:**
+- Modify: `src/lib/quantity-format.ts`
+- Modify: `tests/unit/quantity-format.test.ts`
+
+- [ ] **Step 1: Update tests to expect comma decimal**
+
+Open `tests/unit/quantity-format.test.ts`. Jede Erwartung mit Dezimalpunkt auf Komma ändern, z. B.:
+
+```typescript
+// vorher: expect(formatQuantity(0.333)).toBe('0.33');
+// nachher:
+expect(formatQuantity(0.333)).toBe('0,33');
+```
+
+Betroffene Assertions (aus dem bestehenden Test-File):
+- `formatQuantity(0.333)` → `'0,33'`
+- `formatQuantity(0.5)` → `'0,5'`
+- `formatQuantity(1.25)` → `'1,25'`
+
+Ganze Zahlen (`formatQuantity(3)` → `'3'`) und null (`''`) bleiben gleich.
+
+- [ ] **Step 2: Run tests to verify they fail with current implementation**
+
+Run: `npm test -- tests/unit/quantity-format.test.ts`
+Expected: Tests with decimal values fail (`'0.33'` received, `'0,33'` expected).
+
+- [ ] **Step 3: Rewrite `formatQuantity` mit toLocaleString**
+
+Replace contents of `src/lib/quantity-format.ts`:
+
+```typescript
+export function formatQuantity(q: number | null): string {
+  if (q === null || q === undefined) return '';
+  return q.toLocaleString('de-DE', {
+    maximumFractionDigits: 2,
+    useGrouping: false
+  });
+}
+```
+
+- [ ] **Step 4: Run tests to verify they pass**
+
+Run: `npm test -- tests/unit/quantity-format.test.ts`
+Expected: Alle 5 Tests grün.
+
+- [ ] **Step 5: Run full suite to catch app-wide regressions**
+
+Run: `npm test`
+Expected: Alle Tests grün. Falls andere Tests (z. B. Rezept-Detail-Rendering) Erwartungen auf `'.'` haben und fehlschlagen, Assertions dort auf Komma anpassen und in denselben Commit nehmen.
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add src/lib/quantity-format.ts tests/unit/quantity-format.test.ts
+git commit -m "feat(format): formatQuantity app-weit auf de-DE Komma-Dezimal"
+```
+
+---
+
+### Task 4: Migration 015 — Check-Keys auf Family
+
+**Files:**
+- Create: `src/lib/server/db/migrations/015_shopping_check_family.sql`
+
+Hinweis: Migrations werden via `import.meta.glob('./migrations/*.sql', {eager, query:'?raw'})` gebundelt (siehe CLAUDE.md) — kein Dockerfile-Copy nötig.
+
+- [ ] **Step 1: Write the migration**
+
+Create `src/lib/server/db/migrations/015_shopping_check_family.sql`:
+
+```sql
+-- Konsolidierung: unit_key in shopping_cart_check wird zum Family-Key, damit
+-- Abhaks stabil bleiben wenn Display-Unit zwischen g und kg wechselt.
+-- g/kg → 'weight', ml/l → 'volume', Rest bleibt unveraendert.
+UPDATE shopping_cart_check SET unit_key = 'weight' WHERE LOWER(TRIM(unit_key)) IN ('g', 'kg');
+UPDATE shopping_cart_check SET unit_key = 'volume' WHERE LOWER(TRIM(unit_key)) IN ('ml', 'l');
+
+-- Nach Relabeling koennen Duplikate entstehen (zwei Zeilen mit 'weight' pro
+-- name_key). Juengsten Eintrag behalten.
+DELETE FROM shopping_cart_check
+WHERE rowid NOT IN (
+  SELECT MAX(rowid)
+  FROM shopping_cart_check
+  GROUP BY name_key, unit_key
+);
+```
+
+- [ ] **Step 2: Verify migration runs (smoke test via any integration test)**
+
+Run: `npm test -- tests/integration/shopping-repository.test.ts`
+Expected: Alle bestehenden Tests grün (Migration läuft beim `openInMemoryForTest()`, bricht nichts weil Tabelle beim ersten Lauf leer ist).
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add src/lib/server/db/migrations/015_shopping_check_family.sql
+git commit -m "feat(shopping): Migration 015 — Check-Keys auf Unit-Family"
+```
+
+---
+
+### Task 5: listShoppingList mit Family-Konsolidierung
+
+**Files:**
+- Modify: `src/lib/server/shopping/repository.ts:70-107`
+- Modify: `tests/integration/shopping-repository.test.ts`
+
+- [ ] **Step 1: Write failing integration test**
+
+Append to `tests/integration/shopping-repository.test.ts` (z. B. nach dem vorhandenen `addRecipeToCart`-Block, ein eigener Describe-Block):
+
+```typescript
+describe('listShoppingList — Konsolidierung ueber Einheiten', () => {
+  it('fasst 500 g + 1 kg Kartoffeln zu 1,5 kg zusammen', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(
+      db,
+      recipe({
+        title: 'Kartoffelsuppe',
+        servings_default: 4,
+        ingredients: [
+          { position: 1, name: 'Kartoffeln', quantity: 500, unit: 'g', note: null, raw_text: null }
+        ]
+      })
+    );
+    const b = insertRecipe(
+      db,
+      recipe({
+        title: 'Kartoffelpuffer',
+        servings_default: 4,
+        ingredients: [
+          { position: 1, name: 'Kartoffeln', quantity: 1, unit: 'kg', note: null, raw_text: null }
+        ]
+      })
+    );
+    addRecipeToCart(db, a, null);
+    addRecipeToCart(db, b, null);
+
+    const snap = listShoppingList(db);
+    const kartoffeln = snap.rows.filter((r) => r.display_name.toLowerCase() === 'kartoffeln');
+    expect(kartoffeln).toHaveLength(1);
+    expect(kartoffeln[0].total_quantity).toBe(1.5);
+    expect(kartoffeln[0].display_unit).toBe('kg');
+  });
+
+  it('kombiniert ml + l korrekt (400 ml + 0,5 l → 900 ml)', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(
+      db,
+      recipe({
+        title: 'R1',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Milch', quantity: 400, unit: 'ml', note: null, raw_text: null }]
+      })
+    );
+    const b = insertRecipe(
+      db,
+      recipe({
+        title: 'R2',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Milch', quantity: 0.5, unit: 'l', note: null, raw_text: null }]
+      })
+    );
+    addRecipeToCart(db, a, null);
+    addRecipeToCart(db, b, null);
+
+    const milch = listShoppingList(db).rows.filter((r) => r.display_name.toLowerCase() === 'milch');
+    expect(milch).toHaveLength(1);
+    expect(milch[0].total_quantity).toBe(900);
+    expect(milch[0].display_unit).toBe('ml');
+  });
+
+  it('laesst inkompatible Families getrennt (5 Stueck Eier + 500 g Eier = 2 Zeilen)', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(
+      db,
+      recipe({
+        title: 'R1',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Eier', quantity: 5, unit: 'Stück', note: null, raw_text: null }]
+      })
+    );
+    const b = insertRecipe(
+      db,
+      recipe({
+        title: 'R2',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Eier', quantity: 500, unit: 'g', note: null, raw_text: null }]
+      })
+    );
+    addRecipeToCart(db, a, null);
+    addRecipeToCart(db, b, null);
+
+    const eier = listShoppingList(db).rows.filter((r) => r.display_name.toLowerCase() === 'eier');
+    expect(eier).toHaveLength(2);
+  });
+
+  it('summiert gleiche Unit-Family ohne Konversion (2 Bund + 1 Bund → 3 Bund)', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(
+      db,
+      recipe({
+        title: 'R1',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Petersilie', quantity: 2, unit: 'Bund', note: null, raw_text: null }]
+      })
+    );
+    const b = insertRecipe(
+      db,
+      recipe({
+        title: 'R2',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Petersilie', quantity: 1, unit: 'Bund', note: null, raw_text: null }]
+      })
+    );
+    addRecipeToCart(db, a, null);
+    addRecipeToCart(db, b, null);
+
+    const petersilie = listShoppingList(db).rows.filter((r) => r.display_name.toLowerCase() === 'petersilie');
+    expect(petersilie).toHaveLength(1);
+    expect(petersilie[0].total_quantity).toBe(3);
+    expect(petersilie[0].display_unit?.toLowerCase()).toBe('bund');
+  });
+});
+```
+
+- [ ] **Step 2: Run tests to verify they fail**
+
+Run: `npm test -- tests/integration/shopping-repository.test.ts`
+Expected: 4 neue Tests fail (Konsolidierung existiert noch nicht).
+
+- [ ] **Step 3: Rewrite `listShoppingList` to use TS-side consolidation**
+
+Replace the `listShoppingList` body in `src/lib/server/shopping/repository.ts` (Zeilen 70-107):
+
+```typescript
+import { consolidate, unitFamily } from '../unit-consolidation';
+
+// (oben im File unter den bestehenden Imports einfuegen)
+
+export function listShoppingList(
+  db: Database.Database
+): ShoppingListSnapshot {
+  const recipes = db
+    .prepare(
+      `SELECT cr.recipe_id, r.title, r.image_path, cr.servings,
+              COALESCE(r.servings_default, cr.servings) AS servings_default
+         FROM shopping_cart_recipe cr
+         JOIN recipe r ON r.id = cr.recipe_id
+        ORDER BY cr.added_at ASC`
+    )
+    .all() as ShoppingCartRecipe[];
+
+  // SQL aggregiert weiterhin pro (name, raw-unit). Die family-Gruppierung
+  // + Konsolidierung macht TypeScript, damit SQL lesbar bleibt und die
+  // Logik Unit-testbar ist.
+  type RawRow = {
+    name_key: string;
+    unit_key: string;
+    display_name: string;
+    display_unit: string | null;
+    total_quantity: number | null;
+    from_recipes: string;
+  };
+
+  const raw = db
+    .prepare(
+      `SELECT
+         LOWER(TRIM(i.name)) AS name_key,
+         LOWER(TRIM(COALESCE(i.unit, ''))) AS unit_key,
+         MIN(i.name) AS display_name,
+         MIN(i.unit) AS display_unit,
+         SUM(i.quantity * cr.servings * 1.0 / NULLIF(COALESCE(r.servings_default, cr.servings), 0)) AS total_quantity,
+         GROUP_CONCAT(DISTINCT r.title) AS from_recipes
+       FROM shopping_cart_recipe cr
+       JOIN recipe r ON r.id = cr.recipe_id
+       JOIN ingredient i ON i.recipe_id = r.id
+       GROUP BY name_key, unit_key`
+    )
+    .all() as RawRow[];
+
+  // Check-Keys einmalig vorladen
+  const checkedSet = new Set(
+    (
+      db
+        .prepare('SELECT name_key, unit_key FROM shopping_cart_check')
+        .all() as { name_key: string; unit_key: string }[]
+    ).map((c) => `${c.name_key}|${c.unit_key}`)
+  );
+
+  // Gruppieren nach (name_key, unitFamily(unit_key))
+  const grouped = new Map<string, RawRow[]>();
+  for (const r of raw) {
+    const familyKey = unitFamily(r.unit_key);
+    const key = `${r.name_key}|${familyKey}`;
+    const arr = grouped.get(key) ?? [];
+    arr.push(r);
+    grouped.set(key, arr);
+  }
+
+  const rows: ShoppingListRow[] = [];
+  for (const [key, members] of grouped) {
+    const [nameKey, familyKey] = key.split('|');
+    const consolidated = consolidate(
+      members.map((m) => ({ quantity: m.total_quantity, unit: m.display_unit }))
+    );
+    // display_name: ersten nehmen (alle Member haben dasselbe name_key)
+    const displayName = members[0].display_name;
+    // from_recipes: alle unique Titel aus den Members kombinieren
+    const allRecipes = new Set<string>();
+    for (const m of members) {
+      for (const t of m.from_recipes.split(',')) allRecipes.add(t);
+    }
+    rows.push({
+      name_key: nameKey,
+      unit_key: familyKey, // wichtig: family-key, matched mit checked-Lookup
+      display_name: displayName,
+      display_unit: consolidated.unit,
+      total_quantity: consolidated.quantity,
+      from_recipes: [...allRecipes].join(','),
+      checked: checkedSet.has(`${nameKey}|${familyKey}`) ? 1 : 0
+    });
+  }
+
+  // Sort wie bisher: erst unchecked, dann alphabetisch by display_name
+  rows.sort((a, b) => {
+    if (a.checked !== b.checked) return a.checked - b.checked;
+    return a.display_name.localeCompare(b.display_name, 'de', { sensitivity: 'base' });
+  });
+
+  const uncheckedCount = rows.reduce((n, r) => n + (r.checked ? 0 : 1), 0);
+  return { recipes, rows, uncheckedCount };
+}
+```
+
+- [ ] **Step 4: Run tests to verify they pass**
+
+Run: `npm test -- tests/integration/shopping-repository.test.ts`
+Expected: Alle Tests grün (bestehende + 4 neue).
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/lib/server/shopping/repository.ts tests/integration/shopping-repository.test.ts
+git commit -m "feat(shopping): listShoppingList konsolidiert g/kg + ml/l"
+```
+
+---
+
+### Task 6: toggleCheck + clearCheckedItems auf Family-Key
+
+**Files:**
+- Modify: `src/lib/server/shopping/repository.ts:109-188`
+- Modify: `tests/integration/shopping-repository.test.ts`
+
+- [ ] **Step 1: Write failing integration tests**
+
+Append to `tests/integration/shopping-repository.test.ts`:
+
+```typescript
+describe('toggleCheck — stabil ueber Unit-Family', () => {
+  it('haekchen bleibt erhalten wenn Gesamtmenge von kg auf g faellt', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(
+      db,
+      recipe({
+        title: 'R1',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Kartoffeln', quantity: 500, unit: 'g', note: null, raw_text: null }]
+      })
+    );
+    const b = insertRecipe(
+      db,
+      recipe({
+        title: 'R2',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Kartoffeln', quantity: 1, unit: 'kg', note: null, raw_text: null }]
+      })
+    );
+    addRecipeToCart(db, a, null);
+    addRecipeToCart(db, b, null);
+
+    // Abhaken der konsolidierten 1,5-kg-Zeile via family-key
+    const before = listShoppingList(db).rows[0];
+    toggleCheck(db, before.name_key, before.unit_key, true);
+    expect(listShoppingList(db).rows[0].checked).toBe(1);
+
+    // Ein Rezept rausnehmen → nur noch 500 g, display wechselt auf g
+    removeRecipeFromCart(db, b);
+    const after = listShoppingList(db).rows[0];
+    expect(after.display_unit).toBe('g');
+    expect(after.total_quantity).toBe(500);
+    // Haekchen bleibt: unit_key ist weiterhin 'weight'
+    expect(after.checked).toBe(1);
+  });
+});
+```
+
+- [ ] **Step 2: Run tests to verify they fail**
+
+Run: `npm test -- tests/integration/shopping-repository.test.ts`
+Expected: Der neue Test failt, weil `toggleCheck` noch mit `unit_key` als raw unit arbeitet — der Check wird mit `'weight'` geschrieben, ABER das Schreiben selbst könnte fälschlich doch durchgehen (toggleCheck macht ja nur INSERT mit dem gegebenen Key). Der Failure entsteht beim zweiten `listShoppingList()`: der Lookup-Key matched noch nicht mit dem gespeicherten Check.
+
+Tatsächlich: Mit Task 5 schreibt `toggleCheck(db, name, 'weight', true)` einen Eintrag `(kartoffeln, 'weight')` in `shopping_cart_check`. `listShoppingList` liest den Check mit dem Family-Key — also passt. Der Test müsste grün sein _wenn_ toggleCheck unverändert funktioniert.
+
+Hmm — let me re-check. `toggleCheck(db, nameKey, unitKey, checked)` nimmt einfach den String, den der Caller übergibt, und speichert. Das ist agnostisch. Also wenn die UI `row.unit_key` durchreicht (was ja jetzt 'weight' ist), funktioniert das. Kein Code-Change nötig in toggleCheck.
+
+`clearCheckedItems` hingegen vergleicht Check-Keys mit der Ingredient-Tabelle via `LOWER(TRIM(COALESCE(i.unit, '')))` — das ist aber der RAW unit, nicht der Family-Key. Hier ist der Fix nötig.
+
+→ Step 2 wird daher beide Facetten prüfen: (1) toggleCheck/round-trip funktioniert bereits (Test grün), (2) clearCheckedItems dedupliziert korrekt.
+
+Ich füge daher einen expliziten clearCheckedItems-Test hinzu:
+
+Append weitere Test-Case in denselben Block:
+
+```typescript
+it('clearCheckedItems respektiert family-key beim Orphan-Cleanup', () => {
+  const db = openInMemoryForTest();
+  const a = insertRecipe(
+    db,
+    recipe({
+      title: 'R1',
+      servings_default: 4,
+      ingredients: [
+        { position: 1, name: 'Kartoffeln', quantity: 500, unit: 'g', note: null, raw_text: null },
+        { position: 2, name: 'Salz', quantity: 1, unit: 'Prise', note: null, raw_text: null }
+      ]
+    })
+  );
+  addRecipeToCart(db, a, null);
+  const rows = listShoppingList(db).rows;
+  // Alle abhaken
+  for (const r of rows) toggleCheck(db, r.name_key, r.unit_key, true);
+  clearCheckedItems(db);
+  // Das Rezept sollte raus sein
+  expect(listShoppingList(db).recipes).toHaveLength(0);
+  // Check-Tabelle sollte leer sein (keine Orphans)
+  const remaining = (db.prepare('SELECT COUNT(*) AS c FROM shopping_cart_check').get() as { c: number }).c;
+  expect(remaining).toBe(0);
+});
+```
+
+Run: `npm test -- tests/integration/shopping-repository.test.ts`
+Expected: Der clearCheckedItems-Test könnte failen weil der Orphan-Cleanup mit raw-unit vergleicht — der Check hat 'weight', das Ingredient hat 'g', Key-Match schlägt fehl, Check bleibt als Orphan.
+
+- [ ] **Step 3: Fix `clearCheckedItems` to use family-key for orphan comparison**
+
+In `src/lib/server/shopping/repository.ts`, in `clearCheckedItems` den Orphan-Cleanup-Block:
+
+Ersetzen (aktuell Zeilen 163-185):
+
+```typescript
+    // Orphan-Checks raeumen: alle Check-Keys, die jetzt in KEINEM Cart-Rezept
+    // mehr vorkommen.
+    const activeKeys = db
+      .prepare(
+        `SELECT DISTINCT
+           LOWER(TRIM(i.name)) AS name_key,
+           LOWER(TRIM(COALESCE(i.unit, ''))) AS unit_key
+         FROM shopping_cart_recipe cr
+         JOIN ingredient i ON i.recipe_id = cr.recipe_id`
+      )
+      .all() as { name_key: string; unit_key: string }[];
+    const activeSet = new Set(activeKeys.map((k) => `${k.name_key} ${k.unit_key}`));
+    const allChecks = db
+      .prepare('SELECT name_key, unit_key FROM shopping_cart_check')
+      .all() as { name_key: string; unit_key: string }[];
+    const del = db.prepare(
+      'DELETE FROM shopping_cart_check WHERE name_key = ? AND unit_key = ?'
+    );
+    for (const c of allChecks) {
+      if (!activeSet.has(`${c.name_key} ${c.unit_key}`)) {
+        del.run(c.name_key, c.unit_key);
+      }
+    }
+```
+
+durch:
+
+```typescript
+    // Orphan-Checks raeumen: Active-Keys nach (name_key, unitFamily(raw-unit))
+    // bauen, damit Checks mit family-key korrekt gematcht werden.
+    const activeRaw = db
+      .prepare(
+        `SELECT DISTINCT
+           LOWER(TRIM(i.name)) AS name_key,
+           LOWER(TRIM(COALESCE(i.unit, ''))) AS unit_key
+         FROM shopping_cart_recipe cr
+         JOIN ingredient i ON i.recipe_id = cr.recipe_id`
+      )
+      .all() as { name_key: string; unit_key: string }[];
+    const activeSet = new Set(
+      activeRaw.map((k) => `${k.name_key}|${unitFamily(k.unit_key)}`)
+    );
+    const allChecks = db
+      .prepare('SELECT name_key, unit_key FROM shopping_cart_check')
+      .all() as { name_key: string; unit_key: string }[];
+    const del = db.prepare(
+      'DELETE FROM shopping_cart_check WHERE name_key = ? AND unit_key = ?'
+    );
+    for (const c of allChecks) {
+      if (!activeSet.has(`${c.name_key}|${c.unit_key}`)) {
+        del.run(c.name_key, c.unit_key);
+      }
+    }
+```
+
+Analog den oberen Block in `clearCheckedItems` (perRecipe-Gruppierung, Zeilen 132-146), der `unit_key` mit `LOWER(TRIM(i.unit))` matched — da wird pro recipe_id gezählt, ob alle Zeilen abgehakt sind. Der Count-Vergleich mit `shopping_cart_check` erfolgt auch hier via unit_key. Anpassen:
+
+Ersetzen (aktuell Zeilen 132-147):
+
+```typescript
+    const allRows = db
+      .prepare(
+        `SELECT
+           cr.recipe_id,
+           LOWER(TRIM(i.name)) AS name_key,
+           LOWER(TRIM(COALESCE(i.unit, ''))) AS unit_key,
+           EXISTS(
+             SELECT 1 FROM shopping_cart_check c
+              WHERE c.name_key = LOWER(TRIM(i.name))
+                AND c.unit_key = LOWER(TRIM(COALESCE(i.unit, '')))
+           ) AS checked
+         FROM shopping_cart_recipe cr
+         JOIN ingredient i ON i.recipe_id = cr.recipe_id`
+      )
+      .all() as { recipe_id: number; name_key: string; unit_key: string; checked: 0 | 1 }[];
+```
+
+durch:
+
+```typescript
+    // Rohe (name, unit)-Zeilen holen, checked-Status per Family-Key-Lookup
+    // in JS entscheiden (SQL-CASE-Duplikation vermeiden).
+    const allRowsRaw = db
+      .prepare(
+        `SELECT
+           cr.recipe_id,
+           LOWER(TRIM(i.name)) AS name_key,
+           LOWER(TRIM(COALESCE(i.unit, ''))) AS unit_key
+         FROM shopping_cart_recipe cr
+         JOIN ingredient i ON i.recipe_id = cr.recipe_id`
+      )
+      .all() as { recipe_id: number; name_key: string; unit_key: string }[];
+
+    const checkSet = new Set(
+      (
+        db
+          .prepare('SELECT name_key, unit_key FROM shopping_cart_check')
+          .all() as { name_key: string; unit_key: string }[]
+      ).map((c) => `${c.name_key}|${c.unit_key}`)
+    );
+
+    const allRows = allRowsRaw.map((r) => ({
+      recipe_id: r.recipe_id,
+      name_key: r.name_key,
+      unit_key: r.unit_key,
+      checked: checkSet.has(`${r.name_key}|${unitFamily(r.unit_key)}`) ? (1 as const) : (0 as const)
+    }));
+```
+
+- [ ] **Step 4: Run tests to verify they pass**
+
+Run: `npm test -- tests/integration/shopping-repository.test.ts`
+Expected: Alle Tests grün.
+
+- [ ] **Step 5: Run full suite + typecheck**
+
+Run: `npm test && npm run check`
+Expected: 
+- Tests: alle grün
+- svelte-check: `0 ERRORS 0 WARNINGS`
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add src/lib/server/shopping/repository.ts tests/integration/shopping-repository.test.ts
+git commit -m "feat(shopping): clearCheckedItems auf Family-Key umgestellt"
+```
+
+---
+
+### Task 7: End-to-End-Smoketest im Dev-Deployment
+
+**Files:** keine
+
+- [ ] **Step 1: Push und warten auf CI-Deploy**
+
+```bash
+git push
+```
+
+CI baut arm64-Image, deployt nach dev. ~5 Min.
+
+- [ ] **Step 2: Manuell auf `https://kochwas-dev.siegeln.net/shopping-list` prüfen**
+
+Check-Liste:
+- Zwei Rezepte mit 500 g + 1 kg gleicher Zutat in den Warenkorb → eine Zeile mit "1,5 kg".
+- 400 ml + 0,5 l → "900 ml".
+- Komma-Darstellung in Rezept-Detail überall ok (keine Regressionen).
+- Abhaken + Rezept rausnehmen → Haken bleibt.
+
+Wenn alle grün: Feature ist done. Kein separater Commit nötig.
+
+---
+
+## Self-Review Checklist
+
+- [x] Spec-Coverage: Alle Sektionen abgedeckt (Unit-Konsolidierung → Task 1+2, Migration → Task 4, Formatter → Task 3, listShoppingList-Integration → Task 5, Check-Stabilität → Task 6).
+- [x] Keine Placeholder: alle Tests und Implementierungen vollständig ausgeschrieben.
+- [x] Type-Konsistenz: `QuantityInUnit`, `ShoppingListRow` einheitlich referenziert. `unit_key` bleibt derselbe Feldname, semantisch jetzt Family-Key.
+- [x] Scope: eine einzelne Phase, atomic commits, TDD.

docs/superpowers/specs/2026-04-21-shopping-list-design.md

@@ -0,0 +1,295 @@
+# Einkaufsliste — Design-Spec
+
+**Datum**: 2026-04-21
+**Status**: Spec, vor Implementierung
+
+## Ziel
+
+Aus Rezepten auf der Wunschliste eine flache, aggregierte Einkaufsliste erzeugen. Die Liste ist haushaltsweit geteilt, mobil-first, im Supermarkt abhakbar. Portionen sind pro Rezept anpassbar. Identische Zutaten (gleicher Name + gleiche Einheit) werden über mehrere Rezepte hinweg summiert.
+
+## Entscheidungen (aus Brainstorming)
+
+| Thema | Entscheidung |
+|---|---|
+| Sichtbarkeit | Global, eine Liste für alle Profile |
+| Portionen | Default `servings_default` beim Hinzufügen; zentral auf der Einkaufslisten-Seite anpassbar |
+| Aggregation | Flache Liste, exaktes Matching auf `(LOWER(TRIM(name)), LOWER(TRIM(unit)))`. Keine Fuzzy-Matches — lieber zwei Zeilen als falsche Summen. Rezept-Herkunft pro Zeile sichtbar. |
+| Abhaken | Checkbox, durchgestrichen, sortiert ans Ende. Manuelles Cleanup via „Erledigte entfernen" / „Liste leeren" |
+| Kopplung | Komplett entkoppelt von Wunschliste und `cooking_log`. Abhaken beeinflusst nur die Einkaufsliste. |
+| Header-Badge | Zählt **nicht-abgehakte** aggregierte Zutaten-Zeilen. Versteckt sich bei Count = 0. |
+| Manuelle Einträge | Out of scope. Nur rezeptbasiert. |
+
+## Datenmodell
+
+Migration `013_shopping_list.sql`:
+
+```sql
+CREATE TABLE shopping_cart_recipe (
+  recipe_id INTEGER PRIMARY KEY REFERENCES recipe(id) ON DELETE CASCADE,
+  servings INTEGER NOT NULL,
+  added_by_profile_id INTEGER REFERENCES profile(id) ON DELETE SET NULL,
+  added_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE shopping_cart_check (
+  name_key TEXT NOT NULL,
+  unit_key TEXT NOT NULL,
+  checked_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY (name_key, unit_key)
+);
+```
+
+**Derivation-Prinzip**: Die aggregierte Liste wird **nicht materialisiert**. Sie wird bei jedem Lesen aus `shopping_cart_recipe JOIN recipe JOIN ingredient` plus Skalierungs-Faktor berechnet. Vorteil: Rezept-Edits wirken live auf die Liste.
+
+**Abhaken pro aggregierter Zeile**: `(name_key, unit_key)` — nicht pro Rezept-Zutat. Wenn zwei Rezepte beide „Mehl, g" haben, gibt es eine Zeile „400 g Mehl", und ein Haken reicht. Wird eines der Rezepte entfernt, bleibt „200 g Mehl" mit Haken sichtbar.
+
+**Orphan-Checks** (aggregierter Schlüssel ist nicht mehr durch ein Rezept im Cart abgedeckt): Werden nicht aktiv gelöscht, tauchen aber in der Ausgabe von `listShoppingList` nicht auf (der Join erzeugt keine Zeile). Späteres Cleanup optional via `clearCart` / `clearCheckedItems`.
+
+### Aggregations-SQL (Kern)
+
+```sql
+SELECT
+  LOWER(TRIM(i.name)) AS name_key,
+  LOWER(TRIM(COALESCE(i.unit, ''))) AS unit_key,
+  MIN(i.name) AS display_name,
+  MIN(i.unit) AS display_unit,
+  SUM(i.quantity * cr.servings * 1.0 / r.servings_default) AS total_quantity,
+  GROUP_CONCAT(DISTINCT r.title) AS from_recipes,
+  EXISTS(SELECT 1 FROM shopping_cart_check c
+         WHERE c.name_key = LOWER(TRIM(i.name))
+           AND c.unit_key = LOWER(TRIM(COALESCE(i.unit, '')))) AS checked
+FROM shopping_cart_recipe cr
+JOIN recipe r ON r.id = cr.recipe_id
+JOIN ingredient i ON i.recipe_id = r.id
+GROUP BY name_key, unit_key
+ORDER BY checked ASC, display_name COLLATE NOCASE;
+```
+
+**Edge Cases**:
+- `i.quantity IS NULL` → `total_quantity` bleibt NULL, UI rendert ohne Mengenangabe.
+- `r.servings_default IS NULL` → Division through-by-NULL → `total_quantity` NULL; defensiver: `COALESCE(r.servings_default, cr.servings)` (Faktor = 1, wenn kein Default bekannt).
+- `i.unit IS NULL` → `unit_key = ''`, Anzeige ohne Einheit.
+- Rezept hat keine Zutaten (sehr selten) → kein Beitrag zur Liste, Rezept-Chip erscheint trotzdem (Signal: „ups, keine Zutaten").
+
+## Server-Module
+
+### `src/lib/server/shopping/repository.ts`
+
+Neue Typen:
+
+```ts
+export type ShoppingCartRecipe = {
+  recipe_id: number;
+  title: string;
+  image_path: string | null;
+  servings: number;
+  servings_default: number;
+};
+
+export type ShoppingListRow = {
+  name_key: string;
+  unit_key: string;
+  display_name: string;
+  display_unit: string | null;
+  total_quantity: number | null;
+  from_recipes: string;  // comma-separated recipe titles
+  checked: 0 | 1;
+};
+
+export type ShoppingListSnapshot = {
+  recipes: ShoppingCartRecipe[];
+  rows: ShoppingListRow[];
+  uncheckedCount: number;
+};
+```
+
+Funktionen:
+
+- `addRecipeToCart(db, recipeId, profileId, servings?)` — `INSERT … ON CONFLICT(recipe_id) DO UPDATE SET servings = excluded.servings`. Wenn `servings` fehlt, nimmt `COALESCE(recipe.servings_default, 4)`.
+- `removeRecipeFromCart(db, recipeId)`
+- `setCartServings(db, recipeId, servings)` — App-seitig validiert: `1 ≤ servings ≤ 50`. SQL-Level `CHECK (servings > 0)` zusätzlich als Sicherheitsnetz.
+- `listShoppingList(db) → ShoppingListSnapshot` — liefert Cart-Rezepte, aggregierte Zeilen und `uncheckedCount` in einer Transaktion.
+- `toggleCheck(db, nameKey, unitKey, checked: boolean)` — Insert bzw. Delete in `shopping_cart_check`.
+- `clearCheckedItems(db)` — transaktional:
+  1. Aggregation laufen lassen und `recipe_id`s finden, deren sämtliche aggregierten Zeilen abgehakt sind (ein Rezept zählt als „erledigt", wenn all seine `(name_key, unit_key)`-Beiträge in `shopping_cart_check` stehen)
+  2. Diese Rezepte via `DELETE FROM shopping_cart_recipe WHERE recipe_id IN (…)` entfernen
+  3. Check-Einträge, die jetzt keinen Bezug mehr haben, mit `DELETE FROM shopping_cart_check WHERE (name_key, unit_key) NOT IN (<aktive Keys nach Step 2>)` aufräumen
+- `clearCart(db)` — `DELETE FROM shopping_cart_recipe; DELETE FROM shopping_cart_check;`
+
+### Routen
+
+| Methode + Pfad | Body/Params | Zweck |
+|---|---|---|
+| `GET /api/shopping-list` | — | Snapshot holen |
+| `POST /api/shopping-list/recipe` | `{ recipe_id, servings?, profile_id? }` | Rezept in Cart; idempotent |
+| `PATCH /api/shopping-list/recipe/:recipe_id` | `{ servings }` | Portionen ändern |
+| `DELETE /api/shopping-list/recipe/:recipe_id` | — | Rezept raus |
+| `POST /api/shopping-list/check` | `{ name_key, unit_key }` | Abhaken |
+| `DELETE /api/shopping-list/check` | `{ name_key, unit_key }` | Haken weg |
+| `DELETE /api/shopping-list/checked` | — | Erledigte entfernen |
+| `DELETE /api/shopping-list` | — | Liste leeren |
+
+Error-Handling: 404 wenn `recipe_id` nicht im Cart (nur bei DELETE/PATCH auf spezifischem Rezept), 400 bei Validation-Fehlern (servings ≤ 0, fehlende Felder), 500 mit JSON-Body `{ message }` bei DB-Fehlern.
+
+## Client-Store
+
+`src/lib/client/shopping-cart.svelte.ts` — analog zu `wishlist.svelte.ts`:
+
+```ts
+class ShoppingCartStore {
+  uncheckedCount = $state(0);
+  recipeIds = $state<Set<number>>(new Set());  // für „ist dieses Rezept im Cart?"
+  loaded = $state(false);
+
+  async refresh(): Promise<void>;
+  async addRecipe(recipeId: number): Promise<void>;
+  async removeRecipe(recipeId: number): Promise<void>;
+  isInCart(recipeId: number): boolean;
+}
+```
+
+- `refresh()` ruft `GET /api/shopping-list` auf und extrahiert `recipeIds` + `uncheckedCount` aus dem Snapshot. Ein separater Leichtgewichts-Count-Endpoint ist nicht nötig; der Snapshot ist klein.
+- Store wird in `+layout.svelte` beim `onMount` initialisiert (wie `wishlistStore.refresh()`).
+- Nach jedem Mutating-Call (add/remove/toggle/clear) wird `refresh()` vom aufrufenden Code getriggert.
+
+## UI
+
+### (a) Wunschlisten-Karte — Relayout
+
+Aktuell drücken zwei rechts-gestapelte Buttons den Titel-Text auf Handys zusammen. Neues Layout:
+
+```
+┌──────────┬─────────────────────────────┐
+│          │  [Utensils|3] [Cart] [Trash] │   Action-Leiste oben, horizontal
+│   Bild   │  Titel (fett, 2 Zeilen max)  │
+│   96px   │  Hendrik, Verena, Leana      │   wanted_by + ★
+│          │  ★ 4.5                        │
+└──────────┴─────────────────────────────┘
+```
+
+Konkret in `src/routes/wishlist/+page.svelte`:
+- `.actions` wird horizontal, als erste Zeile über dem Titel rechts-bündig.
+- `source_domain`-Span aus der `.meta`-Zeile entfernt (Platz).
+- Neuer Cart-Button zwischen Utensils und Trash:
+  - Nicht im Cart: neutral (Icon grau), aria-label „In den Einkaufswagen"
+  - Im Cart: grün gefüllt, Häkchen-Badge unten rechts, aria-label „Aus Einkaufswagen entfernen"
+- Alle drei Buttons ≥ 44 × 44 px (mobile Tap-Target).
+
+Vergleichbare Reorg in `src/routes/recipes/[id]/+page.svelte` nötig? — **Nein**. Der Cart-Button erscheint nur auf der Wunschliste. (Begründung: Rezept-Detail hat schon ein volles Action-Menü; das Hinzufügen zum Cart passiert bewusst aus der Wunschlisten-Perspektive.)
+
+### (b) Header-Badge
+
+`src/routes/+layout.svelte` — rechts neben dem bestehenden Kochtopf-Icon:
+
+- Icon `ShoppingCart` aus `lucide-svelte`
+- Badge-Kreis oben rechts mit `shoppingCartStore.uncheckedCount`
+- Nur sichtbar wenn `uncheckedCount > 0`
+- Klick → `goto('/shopping-list')`
+- Gleicher Visual-Style wie der CookingPot (Farb-Konsistenz grün)
+
+### (c) Seite `/shopping-list`
+
+Datei: `src/routes/shopping-list/+page.svelte`
+
+```
+┌──────────────────────────────────────┐
+│ Einkaufsliste                        │   Header
+│ 12 noch zu besorgen · 3 Rezepte      │
+├──────────────────────────────────────┤
+│ [Carbonara 4p- +] [Lasagne 6p- +] …  │   Rezept-Chips, horizontal scrollbar
+│                                       │   (Titel + Portions-Stepper + X)
+├──────────────────────────────────────┤
+│ ☐ 400 g Mehl                         │
+│    aus Carbonara, Lasagne             │
+│ ☐ 6 Stk Eier                          │
+│    aus Carbonara                      │
+│ …                                     │
+│ ☑ 200 g Butter  (durchgestrichen)     │   Abgehakt, ans Ende
+├──────────────────────────────────────┤
+│ [Erledigte entfernen] [Liste leeren] │   Sticky Footer
+└──────────────────────────────────────┘
+```
+
+**Komponenten** (neue Svelte-Dateien):
+- `src/lib/components/ShoppingCartChip.svelte` — Rezept-Chip mit Stepper + Remove
+- `src/lib/components/ShoppingListRow.svelte` — eine Zutatenzeile mit Checkbox
+
+**Portions-Stepper**: - und + Buttons, mittig die Zahl. Min 1, Max 50 (sanity). Klick sendet PATCH, triggert Store-Refresh → Liste rerendert.
+
+**Zutaten-Reihenfolge**: Erst nicht-abgehakt, dann abgehakt; innerhalb jeder Gruppe alphabetisch (`display_name COLLATE NOCASE`). Abgehakt = durchgestrichen + grauer Text.
+
+**Mengen-Formatierung** (`src/lib/quantity-format.ts`, neu):
+- `formatQuantity(q: number | null): string`
+- `null` → `''`
+- Ganz-nahe-Ganzzahl (Epsilon 0.01) → Integer
+- Sonst auf max. 2 Nachkommastellen, trailing Nullen weg
+- Beispiele: `400 → "400"`, `0.5 → "0.5"`, `0.333 → "0.33"`, `null → ""`
+
+**Aktionen im Footer**:
+- „Erledigte entfernen" — sichtbar wenn ≥ 1 Check, kein Confirm (reversibel genug)
+- „Liste leeren" — Confirm via `confirmAction`: „Komplette Einkaufsliste löschen? Das macht nicht rückgängig."
+
+**Empty State**: Icon `ShoppingCart` (große Version), „Einkaufswagen ist leer", Hint „Lege Rezepte auf der Wunschliste in den Wagen, um sie hier zu sehen."
+
+**Offline-Verhalten**: Wie die Wunschliste — alle Mutating-Calls via `requireOnline()`. Service-Worker cached nichts von `/api/shopping-list/*` (network-only analog zu Wishlist). Die PWA-Seite selbst wird vom SW-Shell-Cache serviert, aber ohne Daten. Offline-Robustheit (local queue + sync) ist **out of scope** für v1.
+
+## Testing
+
+### Unit/Integration-Tests (Vitest, in-memory DB)
+
+- `tests/integration/shopping-repository.test.ts`:
+  - `addRecipeToCart` idempotent, `ON CONFLICT` überschreibt `servings`
+  - Aggregation: gleiche `(name_key, unit_key)` summiert; unterschiedliche unit_keys bleiben getrennt
+  - Portions-Skalierung: `servings_default=4`, `servings=2` → alle Mengen halbiert
+  - Nulls: `quantity IS NULL` → `total_quantity IS NULL`; `unit IS NULL` → `unit_key=''`
+  - `toggleCheck` persistiert über `listShoppingList`-Aufrufe
+  - Abgehakt-Status überlebt Entfernen eines Rezepts, solange Schlüssel von einem anderen kommt
+  - `clearCheckedItems`: entfernt nur vollständig abgehakte Rezepte + räumt Orphan-Checks
+  - `countUncheckedItems` nach diversen Ops korrekt
+  - `clearCart` cleant beide Tabellen
+- `tests/unit/shopping-cart-store.test.ts`:
+  - Mock-Fetch, testet refresh-Trigger nach add/remove
+  - `isInCart(id)` reflektiert aktuellen Zustand
+  - `uncheckedCount` reactive nach refresh
+- `tests/unit/quantity-format.test.ts`:
+  - `formatQuantity(400) === "400"`
+  - `formatQuantity(0.5) === "0.5"`
+  - `formatQuantity(0.333333) === "0.33"`
+  - `formatQuantity(400.001) === "400"` (Epsilon)
+  - `formatQuantity(null) === ""`
+
+### E2E-Tests (Playwright, `tests/e2e/remote/shopping.spec.ts`)
+
+**Wichtig**: E2E-Tests laufen gegen `kochwas-dev.siegeln.net` und erfordern einen erfolgreichen Deploy des Features. Werden nach dem Feature-Merge manuell ausgelöst, nicht im Rahmen der Implementierungs-Phase.
+
+Abgedeckt:
+- Rezept auf Wunschliste → Cart-Button klicken → Header-Badge erscheint
+- Navigation zu `/shopping-list`, Portions-Stepper hoch/runter → Zutatenmengen reagieren
+- Zutat abhaken → Badge-Count sinkt, Zeile durchgestrichen, Reload persistiert
+- „Erledigte entfernen" → vollständig abgehakte Rezepte weg, teilweise abgehakte bleiben
+- „Liste leeren" → Empty-State, Badge verschwindet
+- Zwei Rezepte mit gleicher Zutat (Fixture-Setup) → aggregierte Zeile mit Summe
+- Cleanup-Fixture entfernt Cart + Checks nach jedem Test
+
+**Nicht getestet**: exakte CSS-Styles, Animationen — visuelle Kontrolle beim Deploy.
+
+## Implementierungs-Reihenfolge (Hinweis für Plan)
+
+1. Migration 013 + Repository + Unit-Tests
+2. API-Routen + Integrationstests
+3. Client-Store
+4. Header-Badge-Icon
+5. Wunschlisten-Karte Relayout + Cart-Button
+6. Seite `/shopping-list` (Chips → Rows → Footer → Empty State)
+7. Quantity-Formatter + Tests
+8. Service-Worker network-only für `/api/shopping-list/*`
+9. Deploy, dann E2E-Tests nachschieben
+
+## Out of Scope (für v1)
+
+- Manuelle Einträge („Klopapier")
+- Supermarkt-Abteilungs-Sortierung
+- Offline-Queue (add/check während offline, sync später)
+- Synonym/Fuzzy-Matching von Zutaten-Namen (der User harmonisiert langfristig händisch)
+- Auto-Kopplung zu `cooking_log` / Wunschliste-Remove
+- Teilen per Link / Export

docs/superpowers/specs/2026-04-22-einkaufsliste-konsolidierung-design.md

@@ -0,0 +1,208 @@
+# Einkaufsliste: Mengen-Konsolidierung über Einheiten
+
+## Kontext
+
+Die Einkaufsliste (`/src/lib/server/shopping/repository.ts`, `listShoppingList()`) aggregiert
+Zutaten aus allen Warenkorb-Rezepten dynamisch per `GROUP BY LOWER(TRIM(name)), LOWER(TRIM(unit))`
+und summiert die skalierten Mengen. Verschiedene Einheiten für dieselbe Zutat bleiben separate
+Zeilen — typisches Beispiel: `500 g Kartoffeln` (Rezept A) und `1 kg Kartoffeln` (Rezept B)
+erscheinen als zwei Zeilen. Gewünscht: beides konsolidiert zu `1,5 kg Kartoffeln`.
+
+## Design-Entscheidungen (durch Brainstorming bestätigt)
+
+- **Scope**: nur Gewicht (g ↔ kg) und Volumen (ml ↔ l). TL/EL/Tasse/Stück bleiben unverändert.
+- **Anzeige-Einheit**: Auto-Promote ab ≥ 1000 in Basis-Einheit (500 g + 1 kg → "1,5 kg",
+  200 g + 300 g → "500 g", 400 ml + 0,5 l → "900 ml", 0,5 l + 0,8 l → "1,3 l").
+- **Formatter**: `formatQuantity` wechselt app-weit auf `toLocaleString('de-DE', …)` →
+  deutsches Komma als Dezimaltrennzeichen überall, kein Tausender-Grouping.
+- **Check-Stabilität**: der „abgehakt"-State hängt künftig an der Unit-Family (weight / volume /
+  raw-unit), nicht an einer Display-Einheit, damit Hin-und-her-Wechsel zwischen g und kg den
+  Haken nicht verlieren.
+
+## Sektion 1 — Unit-Konsolidierung
+
+### Neue Utility: `src/lib/server/shopping/unit-consolidation.ts`
+
+Zwei reine Funktionen, vollständig getestet per Unit-Tests:
+
+```ts
+export type UnitFamily = 'weight' | 'volume' | string;
+
+const WEIGHT_UNITS = new Set(['g', 'kg']);
+const VOLUME_UNITS = new Set(['ml', 'l']);
+
+export function unitFamily(unit: string | null | undefined): UnitFamily {
+  const u = (unit ?? '').trim().toLowerCase();
+  if (WEIGHT_UNITS.has(u)) return 'weight';
+  if (VOLUME_UNITS.has(u)) return 'volume';
+  return u; // leer bleibt leer → eigene Gruppe
+}
+
+export interface QuantityInUnit {
+  quantity: number | null;
+  unit: string | null;
+}
+
+export function consolidate(rows: QuantityInUnit[]): QuantityInUnit {
+  // Gewicht: in g summieren, ≥1000 → kg, sonst g
+  // Volumen: in ml summieren, ≥1000 → l, sonst ml
+  // Andere: quantity einfach summieren, unit vom ersten Eintrag
+  //   (alle rows einer Gruppe haben dieselbe Family = denselben unit-string)
+  // quantity=null wird als 0 behandelt (z. B. "etwas Salz" + "1 TL Salz" → "1 TL")
+}
+```
+
+**Rundung Promote-Schwelle**: Vergleich passiert auf summierter Basis-Einheit
+(z. B. 1500 g ≥ 1000 → kg). Ergebnis-Rundung: `Math.round(x * 100) / 100` (max.
+zwei Nachkommastellen), die finale Display-Formatierung macht `formatQuantity`.
+
+**Edge-Cases, die expliziter Test-Fall sind**:
+- `500 g + 1 kg` → `{quantity: 1.5, unit: 'kg'}`
+- `200 g + 300 g` → `{quantity: 500, unit: 'g'}`
+- `400 ml + 0.5 l` → `{quantity: 900, unit: 'ml'}`
+- `0.5 l + 0.8 l` → `{quantity: 1.3, unit: 'l'}`
+- `2 Bund + 1 Bund` → `{quantity: 3, unit: 'Bund'}` (unchanged family)
+- `5 Stück + 3 Stück` → `{quantity: 8, unit: 'Stück'}`
+- `null + 1 TL Salz` (eine Menge unbekannt) → `{quantity: 1, unit: 'TL'}`
+- `null + null` → `{quantity: null, unit: '<leer oder erster unit>'}`
+
+### Integration in `listShoppingList()`
+
+Die existierende SQL-Query liefert schon skalierte Mengen pro Zutat-Zeile
+(quantity * servings / servings_default). Änderung:
+
+1. **GROUP BY** der SQL-Query wechselt von `LOWER(TRIM(unit))` auf einen
+   Family-Key (inline per `CASE`):
+
+   ```sql
+   GROUP BY LOWER(TRIM(name)),
+     CASE LOWER(TRIM(unit))
+       WHEN 'g'  THEN 'weight'
+       WHEN 'kg' THEN 'weight'
+       WHEN 'ml' THEN 'volume'
+       WHEN 'l'  THEN 'volume'
+       ELSE LOWER(TRIM(unit))
+     END
+   ```
+
+2. **SUM()** wird nicht mehr blind über quantity gerechnet (500 + 1 ≠ 1500
+   in Basis). Stattdessen liefert SQL pro Gruppe eine Liste der einzelnen
+   `(quantity, unit)`-Paare — z. B. via `json_group_array(json_object('quantity', q, 'unit', u))`.
+   TypeScript ruft dann `consolidate()` pro Zeile auf.
+
+   Alternative: SQL liefert für Familien 'weight' und 'volume' schon die
+   summierten Basis-Werte (via `SUM(q * CASE WHEN unit='kg' THEN 1000 ELSE 1 END)`),
+   für andere Families die unveränderte `SUM(q)`. Spart den json_group_array-Trick,
+   ist aber in SQL hässlich. **Empfehlung**: json_group_array + consolidate in TS —
+   SQL bleibt lesbar, Logik testbar.
+
+3. Der Rückgabewert `ShoppingListItem` bekommt zwei zusätzliche Felder (wenn
+   nicht schon vorhanden):
+   - `quantity: number | null` (finaler Display-Wert)
+   - `unit: string | null` (finale Display-Einheit)
+   - `unitFamilyKey: string` (für den Check-Lookup clientseitig)
+
+## Sektion 2 — Check-Key-Stabilität
+
+Aktuelle Tabelle (aus `013_shopping_list.sql`):
+
+```sql
+CREATE TABLE shopping_cart_check (
+  name_key TEXT NOT NULL,
+  unit_key TEXT NOT NULL,
+  checked_at TEXT NOT NULL DEFAULT (datetime('now')),
+  PRIMARY KEY (name_key, unit_key)
+);
+```
+
+### Neue Migration `015_shopping_check_family.sql`
+
+```sql
+-- Unit-Key wird zum Family-Key: g/kg → 'weight', ml/l → 'volume', sonst lowercased unit.
+-- Wir migrieren bestehende Einträge damit alte Abhaks gültig bleiben.
+UPDATE shopping_cart_check SET unit_key = 'weight' WHERE unit_key IN ('g', 'kg');
+UPDATE shopping_cart_check SET unit_key = 'volume' WHERE unit_key IN ('ml', 'l');
+
+-- Nach Umetikettierung können Duplikate entstehen (z. B. zwei Einträge mit
+-- 'weight' für dieselbe Zutat). Deduplizieren: jüngsten behalten.
+DELETE FROM shopping_cart_check
+WHERE rowid NOT IN (
+  SELECT MAX(rowid)
+  FROM shopping_cart_check
+  GROUP BY name_key, unit_key
+);
+```
+
+### Code-Änderungen
+
+- `listShoppingList()`: beim Joinen von `shopping_cart_check` mit den aggregierten
+  Zeilen matched jetzt `(name_key, unit_family_key)` statt `(name_key, unit_key)`.
+- `toggleCheck(name, unit, checked)`: speichert/löscht Check mit
+  `unitFamily(unit)` statt raw unit.
+
+## Sektion 3 — Display-Formatter
+
+### `src/lib/quantity-format.ts`
+
+```ts
+export function formatQuantity(q: number | null): string {
+  if (q === null || q === undefined) return '';
+  return q.toLocaleString('de-DE', {
+    maximumFractionDigits: 2,
+    useGrouping: false
+  });
+}
+```
+
+Kleinere Datei, dieselbe Semantik (max. 2 Dezimalen, ganze Zahlen ohne Dezimal),
+plus deutsches Dezimalkomma app-weit.
+
+### Test-Anpassung `tests/unit/quantity-format.test.ts`
+
+Erwartungswerte von `"0.33"` auf `"0,33"` etc. ziehen. Bestehende 5 Tests müssen mit.
+
+## Sektion 4 — Tests
+
+### Neu: `tests/unit/unit-consolidation.test.ts`
+
+Alle Edge-Cases aus Sektion 1 als expect-Assertions. Plus: `unitFamily`-Table-Tests.
+
+### Ergänzung: `tests/integration/shopping-repository.test.ts`
+
+Ein neuer `describe`-Block „konsolidiert über Einheiten":
+- Rezept A mit `500 g Kartoffeln`, Rezept B mit `1 kg Kartoffeln` → eine Zeile
+  `{name: 'kartoffeln', quantity: 1.5, unit: 'kg'}`.
+- Analog Volumen mit ml + l.
+- Gemischte Units wie `2 Bund Petersilie + 1 Bund Petersilie` → eine Zeile `3 Bund`.
+- `5 Stück Eier + 500 g Eier` → **zwei** Zeilen (verschiedene Families).
+- Abhaken einer konsolidierten kg-Zeile → nach Entfernung eines Rezepts (jetzt nur
+  noch 800 g) bleibt die Zeile abgehakt (Family = 'weight' stabil).
+
+### Ergänzung: Migration-Test
+
+Ein kleiner Test ähnlich dem Stil anderer Migration-Tests im Repo, der verifiziert:
+- Alt-Einträge `(milch, 'ml')` und `(milch, 'l')` kollabieren zu einem `(milch, 'volume')`.
+- Unveränderte Einträge wie `(petersilie, 'bund')` bleiben.
+
+## Was explizit NICHT dabei ist (YAGNI)
+
+- **Fuzzy-Name-Matching** (Kartoffel vs Kartoffeln, „Zwiebeln, rot" vs „rote Zwiebeln") —
+  ausgeschlossen, hohe Fehlerrate.
+- **Stück-zu-Gramm-Mappings** (1 Zwiebel ≈ 80 g) — semantisch fraglich, nicht deterministisch.
+- **TL/EL/Tasse-Konvertierung** — Einkauft man nicht in.
+- **User-editierbare Custom-Units** — Overkill für eine Familien-PWA.
+- **UI-Anzeige der zugrundeliegenden Einzelmengen** („1,5 kg — aus 500 g + 1 kg") — wäre
+  nett, aber nicht notwendig für die Hauptfunktion.
+
+## Phase-Gliederung (für die spätere writing-plans-Phase)
+
+Eine Phase reicht aus:
+1. `unit-consolidation.ts` + Unit-Tests
+2. `quantity-format.ts` auf `toLocaleString` umbauen + Tests updaten
+3. Migration `015_shopping_check_family.sql`
+4. `listShoppingList()` integriert Konsolidierung + Check-Join
+5. `toggleCheck()` auf Family-Key umstellen
+6. Integration-Tests
+
+Alles in einer Phase, weil Änderungen eng verzahnt sind (Migration + Repository + Formatter
+müssen zusammen deployt werden, sonst gibt es UI-Inkonsistenzen).

docs/superpowers/specs/2026-04-22-views-and-collapsibles-design.md

@@ -0,0 +1,244 @@
+# Hauptseite: "Zuletzt angesehen" Sort + Collapsible Sections
+
+## Kontext
+
+Die Hauptseite (`src/routes/+page.svelte`) hat heute drei Sektionen — "Deine
+Favoriten", "Zuletzt hinzugefügt", "Alle Rezepte" — und vier Sort-Optionen
+für "Alle Rezepte" (Name, Bewertung, Zuletzt gekocht, Hinzugefügt). Der
+User möchte:
+
+1. Eine fünfte Sort-Option "Zuletzt angesehen" für "Alle Rezepte"
+2. "Deine Favoriten" und "Zuletzt hinzugefügt" auf-/zuklappbar machen
+
+Beides reduziert visuelle Last und gibt Zugriff auf "kürzlich
+beschäftigte mich" Rezepte ohne Suche.
+
+## Design-Entscheidungen (durch Brainstorming bestätigt)
+
+- **View-Tracking**: zählt sofort beim Laden der Detailseite — kein Threshold
+- **Storage**: SQLite, pro Profil (konsistent mit Ratings, Cooked, Wishlist)
+- **Collapsibles**: standardmäßig offen, User-Wahl persistiert pro Device
+
+## Sektion 1 — Schema & View-Tracking
+
+### Migration
+
+Neue Datei `src/lib/server/db/migrations/014_recipe_view.sql`
+(Numbering: aktuell ist die letzte Migration `013_shopping_list.sql`):
+
+```sql
+CREATE TABLE recipe_view (
+  profile_id INTEGER NOT NULL REFERENCES profiles(id) ON DELETE CASCADE,
+  recipe_id INTEGER NOT NULL REFERENCES recipes(id) ON DELETE CASCADE,
+  last_viewed_at TEXT NOT NULL DEFAULT (datetime('now')),
+  PRIMARY KEY (profile_id, recipe_id)
+);
+CREATE INDEX idx_recipe_view_recent
+  ON recipe_view(profile_id, last_viewed_at DESC);
+```
+
+Idempotent über `INSERT OR REPLACE` — mehrfache Visits ein- und desselben
+Profils auf dasselbe Rezept führen nur zur Aktualisierung des Timestamps,
+kein Multi-Insert.
+
+Cascade auf beide FKs: löscht ein User ein Rezept oder ein Profil, gehen
+zugehörige Views automatisch mit.
+
+### API
+
+Neuer Endpoint `POST /api/recipes/[id]/view`:
+
+```
+Request body: { "profile_id": number }
+Response: 204 No Content
+Errors:
+  - 400 wenn profile_id fehlt oder kein Number
+  - 404 wenn Recipe nicht existiert (FK-Violation)
+  - 404 wenn Profil nicht existiert (FK-Violation)
+```
+
+Implementation: einfache `INSERT OR REPLACE` mit den IDs. `last_viewed_at`
+nutzt den Default (`datetime('now')`).
+
+### Client-Hook
+
+In `src/routes/recipes/[id]/+page.svelte`, in `onMount`:
+
+```ts
+if (profileStore.active) {
+  void fetch(`/api/recipes/${recipe.id}/view`, {
+    method: 'POST',
+    headers: { 'content-type': 'application/json' },
+    body: JSON.stringify({ profile_id: profileStore.active.id })
+  });
+}
+```
+
+Fire-and-forget, kein UI-Block, kein Error-Handling — wenn der Beacon
+fehlschlägt, ist es kein User-Visible-Bug, das nächste View korrigiert
+es.
+
+## Sektion 2 — Sort "Zuletzt angesehen"
+
+### Page
+
+In `src/routes/+page.svelte`:
+
+```ts
+type AllSort = 'name' | 'rating' | 'cooked' | 'created' | 'viewed';
+const ALL_SORTS = [
+  ...,
+  { value: 'viewed', label: 'Zuletzt angesehen' }
+];
+```
+
+### API
+
+`GET /api/recipes/all` bekommt einen optionalen `profile_id`-Query-Param.
+Der Endpoint reicht ihn an `listAllRecipesPaginated` durch.
+
+### DB-Layer
+
+`listAllRecipesPaginated` in `src/lib/server/recipes/search-local.ts`
+bekommt einen optionalen `profileId: number | null`-Parameter. Wenn
+`sort === 'viewed'` UND `profileId !== null`:
+
+```sql
+SELECT r.*, ...
+FROM recipes r
+LEFT JOIN recipe_view v
+  ON v.recipe_id = r.id AND v.profile_id = :profileId
+ORDER BY v.last_viewed_at DESC NULLS LAST,
+         r.title COLLATE NOCASE ASC
+LIMIT :limit OFFSET :offset
+```
+
+Bei `sort === 'viewed'` ohne `profileId`: fällt auf alphabetische
+Sortierung zurück (kein Crash, sinnvolles Default-Verhalten).
+
+### Reactive Refetch bei Profile-Switch
+
+Auf Home-Page-Ebene: ein `$effect` der auf `profileStore.activeId` lauscht
+und — wenn `allSort === 'viewed'` — `setAllSort('viewed')` retriggert
+(forciert Refetch mit neuem profile_id). Sonst (anderer Sort) keine
+Aktion, weil andere Sorts nicht profilabhängig sind.
+
+### Snapshot-Kompatibilität
+
+Der existierende `rehydrateAll(sort, count, exhausted)` in `+page.svelte`
+muss `profile_id` mitschicken, sonst zeigt der Back-Nav für sort='viewed'
+einen anderen Inhalt als vor dem Forward-Klick. Das gleiche gilt für
+`loadAllMore` und `setAllSort`.
+
+## Sektion 3 — Auf-/Zuklappbare Sektionen
+
+### State
+
+In `src/routes/+page.svelte`:
+
+```ts
+type CollapseKey = 'favorites' | 'recent';
+let collapsed = $state<Record<CollapseKey, boolean>>({
+  favorites: false,
+  recent: false
+});
+
+const STORAGE_KEY = 'kochwas.collapsed.sections';
+
+function toggle(key: CollapseKey) {
+  collapsed[key] = !collapsed[key];
+  localStorage.setItem(STORAGE_KEY, JSON.stringify(collapsed));
+}
+```
+
+In `onMount`: aus localStorage parsen, fehlerhafte JSON ignorieren
+(default-state behalten).
+
+### Markup
+
+Pro Sektion:
+
+```svelte
+<section class="listing">
+  <button
+    class="section-head"
+    onclick={() => toggle('favorites')}
+    aria-expanded={!collapsed.favorites}
+  >
+    <ChevronDown size={18} class:rotated={collapsed.favorites} />
+    <h2>Deine Favoriten</h2>
+    <span class="count">{favorites.length}</span>
+  </button>
+  {#if !collapsed.favorites}
+    <div transition:slide={{ duration: 180 }}>
+      <ul class="cards">…</ul>
+    </div>
+  {/if}
+</section>
+```
+
+### Visual / CSS
+
+- Header `<button>`: transparenter Border, full-width, `display: flex`,
+  `align-items: center`, `gap: 0.5rem`, `min-height: 44px` (Tap-Target)
+- Chevron-Icon (lucide-svelte `ChevronDown`): rotiert auf
+  `transform: rotate(-90deg)` wenn `.rotated`
+- Count-Pill rechts: kleiner grauer Text, hilft zu sehen wie viel hinter
+  einer zugeklappten Sektion steckt
+- Hover: leichter Hintergrund (`#f4f8f5`, wie andere interaktive Elemente)
+- Animation: `svelte/transition`'s `slide`, ~180 ms
+
+### Persistenz-Format
+
+```json
+{ "favorites": false, "recent": true }
+```
+
+Truthy = collapsed. Default-Zustand wenn key fehlt: beide false.
+
+### "Alle Rezepte" bleibt nicht-collapsible
+
+Hauptliste, immer sichtbar — User würde das Scrollen verlieren.
+
+## Test-Strategie
+
+### Schema/Migration
+
+- Migrations-Test (existierendes Pattern in `tests/integration`): nach
+  `applyMigrations` muss `recipe_view` existieren mit erwarteten
+  Spalten
+
+### View-Endpoint
+
+- `POST /api/recipes/[id]/view` Integration-Test:
+  - Erstes POST → Row mit `last_viewed_at` ungefähr `now`
+  - Zweites POST → gleiche Row, `last_viewed_at` aktualisiert
+  - POST mit ungültiger profile_id → 404
+  - POST mit ungültiger recipe_id → 404
+  - POST ohne profile_id im Body → 400
+
+### Sort-Logik
+
+- Unit-Test für `listAllRecipesPaginated(db, 'viewed', limit, offset, profileId)`:
+  - Mit Views-Daten: angesehene Rezepte zuerst (DESC nach `last_viewed_at`),
+    Rest alphabetisch
+  - Ohne profileId: fallback auf alphabetisch
+  - Mit profileId aber ohne Views: alle als NULL → alphabetisch
+
+### Collapsibles (manuell oder unit)
+
+- localStorage-Persistenz: Toggle, Reload, gleicher State
+- Default-State wenn localStorage leer/corrupt: beide offen
+- Ein Unit-Test für eine reine Helper-Funktion (parse/serialize), Markup
+  ist Snapshot-mässig nicht so wertvoll testbar
+
+## Reihenfolge der Umsetzung
+
+1. Migration + DB-Layer + Sort-Query (`search-local.ts`-Erweiterung)
+2. View-Endpoint (`POST /api/recipes/[id]/view`) + Client-Beacon in
+   `recipes/[id]/+page.svelte`
+3. Sort-Option in `+page.svelte` UI + API-Param weiterreichen +
+   profile_id in `loadAllMore`/`rehydrateAll`/`setAllSort` durchreichen
+4. Collapsible-Pattern in `+page.svelte` für Favoriten und Recent
+
+Jede Phase atomar committen + pushen.

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "kochwas",
-  "version": "1.3.0",
+  "version": "1.4.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "kochwas",
-      "version": "1.3.0",
+      "version": "1.4.2",
       "dependencies": {
         "@google/generative-ai": "^0.24.1",
         "@types/archiver": "^7.0.0",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "kochwas",
-  "version": "1.3.0",
+  "version": "1.4.2",
   "private": true,
   "type": "module",
   "scripts": {

src/lib/client/scroll-restore.ts

@@ -0,0 +1,78 @@
+// Persistent scroll restoration across client navigations.
+//
+// SvelteKit only restores scroll synchronously after the new page mounts.
+// Pages whose content is fetched in onMount/afterNavigate (e.g. home,
+// wishlist, shopping-list) are still empty at that point, so the saved
+// scrollY can't be reached and the browser clamps to 0.
+//
+// We patch this by saving scrollY on beforeNavigate (keyed by the URL
+// we're leaving — NOT location.pathname, which on popstate is already
+// the new URL by the time the callback fires) and re-applying it after
+// popstate as soon as the document is tall enough — rAF-polled with a
+// hard time budget so we never spin.
+
+const STORAGE_KEY = 'kochwas:scroll';
+const POLL_BUDGET_MS = 1500;
+const MIN_RESTORE_Y = 40; // ignore noise: don't override a default top scroll
+
+type ScrollMap = Record<string, number>;
+
+function readMap(): ScrollMap {
+  if (typeof sessionStorage === 'undefined') return {};
+  try {
+    const raw = sessionStorage.getItem(STORAGE_KEY);
+    return raw ? (JSON.parse(raw) as ScrollMap) : {};
+  } catch {
+    return {};
+  }
+}
+
+function writeMap(map: ScrollMap): void {
+  if (typeof sessionStorage === 'undefined') return;
+  try {
+    sessionStorage.setItem(STORAGE_KEY, JSON.stringify(map));
+  } catch {
+    // quota exceeded — silently drop, scroll memory is best-effort
+  }
+}
+
+function keyFor(url: URL): string {
+  return url.pathname + url.search;
+}
+
+export function recordScroll(fromUrl: URL | null | undefined): void {
+  if (typeof window === 'undefined') return;
+  if (!fromUrl) return;
+  const map = readMap();
+  map[keyFor(fromUrl)] = window.scrollY;
+  writeMap(map);
+}
+
+export function restoreScroll(
+  navType: string | null | undefined,
+  toUrl: URL | null | undefined
+): void {
+  if (typeof window === 'undefined') return;
+  if (navType !== 'popstate') return;
+  if (!toUrl) return;
+  const target = readMap()[keyFor(toUrl)];
+  if (!target || target < MIN_RESTORE_Y) return;
+
+  const start = performance.now();
+  const step = () => {
+    const docHeight = document.documentElement.scrollHeight;
+    const reachable = Math.max(0, docHeight - window.innerHeight);
+    if (reachable >= target - 4) {
+      window.scrollTo({ top: target, left: 0, behavior: 'instant' });
+      return;
+    }
+    if (performance.now() - start >= POLL_BUDGET_MS) {
+      // Best effort — content never grew tall enough; clamp will land us
+      // at the bottom of what's available.
+      window.scrollTo({ top: target, left: 0, behavior: 'instant' });
+      return;
+    }
+    requestAnimationFrame(step);
+  };
+  requestAnimationFrame(step);
+}

src/lib/client/search.svelte.ts

@@ -17,7 +17,7 @@ export type SearchStoreOptions = {
   debounceMs?: number;
   filterDebounceMs?: number;
   minQueryLength?: number;
-  filterParam?: () => string;
+  webFilterParam?: () => string;
   fetchImpl?: typeof fetch;
 };
 
@@ -38,7 +38,7 @@ export class SearchStore {
   private readonly debounceMs: number;
   private readonly filterDebounceMs: number;
   private readonly minQueryLength: number;
-  private readonly filterParam: () => string;
+  private readonly webFilterParam: () => string;
   private readonly fetchImpl: typeof fetch;
   private debounceTimer: ReturnType<typeof setTimeout> | null = null;
   private skipNextDebounce = false;
@@ -48,7 +48,7 @@ export class SearchStore {
     this.debounceMs = opts.debounceMs ?? 300;
     this.filterDebounceMs = opts.filterDebounceMs ?? 150;
     this.minQueryLength = opts.minQueryLength ?? 4;
-    this.filterParam = opts.filterParam ?? (() => '');
+    this.webFilterParam = opts.webFilterParam ?? (() => '');
     this.fetchImpl = opts.fetchImpl ?? ((...a) => fetch(...a));
   }
 
@@ -80,7 +80,7 @@ export class SearchStore {
     this.webExhausted = false;
     try {
       const res = await this.fetchImpl(
-        `/api/recipes/search?q=${encodeURIComponent(q)}&limit=${this.pageSize}${this.filterParam()}`
+        `/api/recipes/search?q=${encodeURIComponent(q)}&limit=${this.pageSize}`
       );
       const body = (await res.json()) as { hits: SearchHit[] };
       if (this.query.trim() !== q) return;
@@ -99,7 +99,7 @@ export class SearchStore {
     this.webSearching = true;
     try {
       const res = await this.fetchImpl(
-        `/api/recipes/search/web?q=${encodeURIComponent(q)}&pageno=${pageno}${this.filterParam()}`
+        `/api/recipes/search/web?q=${encodeURIComponent(q)}&pageno=${pageno}${this.webFilterParam()}`
       );
       if (this.query.trim() !== q) return;
       if (!res.ok) {
@@ -125,7 +125,7 @@ export class SearchStore {
     try {
       if (!this.localExhausted) {
         const res = await this.fetchImpl(
-          `/api/recipes/search?q=${encodeURIComponent(q)}&limit=${this.pageSize}&offset=${this.hits.length}${this.filterParam()}`
+          `/api/recipes/search?q=${encodeURIComponent(q)}&limit=${this.pageSize}&offset=${this.hits.length}`
         );
         const body = (await res.json()) as { hits: SearchHit[] };
         if (this.query.trim() !== q) return;
@@ -140,7 +140,7 @@ export class SearchStore {
         if (wasEmpty) this.webSearching = true;
         try {
           const res = await this.fetchImpl(
-            `/api/recipes/search/web?q=${encodeURIComponent(q)}&pageno=${nextPage}${this.filterParam()}`
+            `/api/recipes/search/web?q=${encodeURIComponent(q)}&pageno=${nextPage}${this.webFilterParam()}`
           );
           if (this.query.trim() !== q) return;
           if (!res.ok) {

src/lib/client/shopping-cart.svelte.ts

@@ -0,0 +1,52 @@
+type Snapshot = {
+  recipes: { recipe_id: number }[];
+  uncheckedCount: number;
+};
+
+export class ShoppingCartStore {
+  uncheckedCount = $state(0);
+  recipeIds = $state<Set<number>>(new Set());
+  loaded = $state(false);
+
+  private readonly fetchImpl: typeof fetch;
+
+  constructor(fetchImpl?: typeof fetch) {
+    this.fetchImpl = fetchImpl ?? ((...a) => fetch(...a));
+  }
+
+  async refresh(): Promise<void> {
+    try {
+      const res = await this.fetchImpl('/api/shopping-list');
+      if (!res.ok) return;
+      const body = (await res.json()) as Snapshot;
+      this.recipeIds = new Set(body.recipes.map((r) => r.recipe_id));
+      this.uncheckedCount = body.uncheckedCount;
+      this.loaded = true;
+    } catch {
+      // keep last known state on network error
+    }
+  }
+
+  async addRecipe(recipeId: number): Promise<void> {
+    const res = await this.fetchImpl('/api/shopping-list/recipe', {
+      method: 'POST',
+      headers: { 'content-type': 'application/json' },
+      body: JSON.stringify({ recipe_id: recipeId })
+    });
+    // Consume body to avoid leaking response, even if we ignore the payload.
+    await res.json().catch(() => null);
+    await this.refresh();
+  }
+
+  async removeRecipe(recipeId: number): Promise<void> {
+    const res = await this.fetchImpl(`/api/shopping-list/recipe/${recipeId}`, { method: 'DELETE' });
+    await res.json().catch(() => null);
+    await this.refresh();
+  }
+
+  isInCart(recipeId: number): boolean {
+    return this.recipeIds.has(recipeId);
+  }
+}
+
+export const shoppingCartStore = new ShoppingCartStore();

src/lib/components/ShoppingCartChip.svelte

@@ -0,0 +1,75 @@
+<script lang="ts">
+  import { X, Minus, Plus } from 'lucide-svelte';
+  import type { ShoppingCartRecipe } from '$lib/server/shopping/repository';
+
+  let { recipe, onServingsChange, onRemove }: {
+    recipe: ShoppingCartRecipe;
+    onServingsChange: (id: number, servings: number) => void;
+    onRemove: (id: number) => void;
+  } = $props();
+
+  function dec() {
+    if (recipe.servings > 1) onServingsChange(recipe.recipe_id, recipe.servings - 1);
+  }
+  function inc() {
+    if (recipe.servings < 50) onServingsChange(recipe.recipe_id, recipe.servings + 1);
+  }
+</script>
+
+<div class="chip">
+  <a class="title" href={`/recipes/${recipe.recipe_id}`}>{recipe.title}</a>
+  <div class="controls">
+    <button aria-label="Portion weniger" onclick={dec} disabled={recipe.servings <= 1}>
+      <Minus size={16} />
+    </button>
+    <span class="val" aria-label="Portionen">{recipe.servings}p</span>
+    <button aria-label="Portion mehr" onclick={inc} disabled={recipe.servings >= 50}>
+      <Plus size={16} />
+    </button>
+    <button aria-label="Rezept aus Einkaufsliste entfernen" class="rm" onclick={() => onRemove(recipe.recipe_id)}>
+      <X size={16} />
+    </button>
+  </div>
+</div>
+
+<style>
+  .chip {
+    flex: 0 0 auto;
+    padding: 0.5rem 0.75rem;
+    background: white;
+    border: 1px solid #cfd9d1;
+    border-radius: 14px;
+    display: flex;
+    flex-direction: column;
+    gap: 0.35rem;
+    min-width: 140px;
+  }
+  .title {
+    color: #2b6a3d;
+    font-weight: 600;
+    font-size: 0.92rem;
+    text-decoration: none;
+    line-height: 1.2;
+    max-width: 160px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+  .controls { display: flex; gap: 0.25rem; align-items: center; }
+  .controls button {
+    min-width: 32px;
+    min-height: 32px;
+    border-radius: 8px;
+    border: 1px solid #e4eae7;
+    background: white;
+    cursor: pointer;
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    color: #444;
+  }
+  .controls button:disabled { opacity: 0.4; cursor: not-allowed; }
+  .controls button.rm { margin-left: auto; }
+  .controls button.rm:hover { color: #c53030; border-color: #f1b4b4; background: #fdf3f3; }
+  .val { min-width: 32px; text-align: center; font-weight: 600; color: #444; }
+</style>

src/lib/components/ShoppingListRow.svelte

@@ -0,0 +1,57 @@
+<script lang="ts">
+  import type { ShoppingListRow } from '$lib/server/shopping/repository';
+  import { formatQuantity } from '$lib/quantity-format';
+
+  let { row, onToggle }: {
+    row: ShoppingListRow;
+    onToggle: (row: ShoppingListRow, next: boolean) => void;
+  } = $props();
+
+  const qtyStr = $derived(formatQuantity(row.total_quantity));
+  const hasUnit = $derived(!!row.display_unit && row.display_unit.trim().length > 0);
+</script>
+
+<label class="row" class:checked={row.checked}>
+  <input
+    type="checkbox"
+    checked={row.checked === 1}
+    onchange={(e) => onToggle(row, (e.currentTarget as HTMLInputElement).checked)}
+  />
+  <span class="text">
+    <span class="name">
+      {#if qtyStr}
+        <span class="qty">{qtyStr}{hasUnit ? ` ${row.display_unit}` : ''}</span>
+      {/if}
+      {row.display_name}
+    </span>
+    <span class="src">aus {row.from_recipes}</span>
+  </span>
+</label>
+
+<style>
+  .row {
+    display: flex;
+    gap: 0.75rem;
+    align-items: flex-start;
+    padding: 0.75rem;
+    border: 1px solid #e4eae7;
+    border-radius: 10px;
+    background: white;
+    cursor: pointer;
+    min-height: 60px;
+  }
+  .row input {
+    width: 24px;
+    height: 24px;
+    margin-top: 0.1rem;
+    flex-shrink: 0;
+    accent-color: #2b6a3d;
+  }
+  .text { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 0.2rem; }
+  .name { font-size: 1rem; }
+  .qty { font-weight: 600; margin-right: 0.3rem; }
+  .src { color: #888; font-size: 0.82rem; }
+  .row.checked { background: #f6f8f7; }
+  .row.checked .name,
+  .row.checked .qty { text-decoration: line-through; color: #888; }
+</style>

src/lib/quantity-format.ts

@@ -0,0 +1,7 @@
+export function formatQuantity(q: number | null): string {
+  if (q === null || q === undefined) return '';
+  return q.toLocaleString('de-DE', {
+    maximumFractionDigits: 2,
+    useGrouping: false
+  });
+}

src/lib/server/ai/gemini-client.ts

@@ -2,6 +2,7 @@ import { GoogleGenerativeAI } from '@google/generative-ai';
 import { env } from '$env/dynamic/private';
 import {
   RECIPE_EXTRACTION_SYSTEM_PROMPT,
+  RECIPE_EXTRACTION_USER_PROMPT,
   GEMINI_RESPONSE_SCHEMA,
   extractionResponseSchema,
   type ExtractionResponse
@@ -84,7 +85,10 @@ async function callGemini(
 
   const parts: Array<
     { inlineData: { data: string; mimeType: string } } | { text: string }
-  > = [{ inlineData: { data: imageBuffer.toString('base64'), mimeType } }];
+  > = [
+    { inlineData: { data: imageBuffer.toString('base64'), mimeType } },
+    { text: RECIPE_EXTRACTION_USER_PROMPT }
+  ];
   if (appendUserNote) parts.push({ text: appendUserNote });
 
   const result = await withTimeout(
@@ -114,6 +118,7 @@ export async function extractRecipeFromImage(
   imageBuffer: Buffer,
   mimeType: string
 ): Promise<ExtractionResponse> {
+  let firstMsg: string | null = null;
   try {
     return await callGemini(imageBuffer, mimeType);
   } catch (e) {
@@ -132,6 +137,9 @@ export async function extractRecipeFromImage(
         : new GeminiError('AI_FAILED', String(e));
     }
 
+    firstMsg = e instanceof Error ? e.message : String(e);
+    console.warn(`[gemini-client] first attempt failed, retrying: ${firstMsg}`);
+
     await new Promise((r) => setTimeout(r, 500));
     try {
       return await callGemini(
@@ -140,11 +148,23 @@ export async function extractRecipeFromImage(
         'Dein vorheriger Output war ungültig. Bitte antworte ausschließlich mit JSON gemäß Schema.'
       );
     } catch (retryErr) {
-      if (retryErr instanceof GeminiError) throw retryErr;
+      const retryMsg = retryErr instanceof Error ? retryErr.message : String(retryErr);
+      if (retryErr instanceof GeminiError) {
+        if (retryErr.code === 'AI_FAILED') {
+          throw new GeminiError(
+            'AI_FAILED',
+            `retry failed: ${retryMsg} (first: ${firstMsg})`
+          );
+        }
+        throw retryErr;
+      }
       const retryStatus = getStatus(retryErr);
       if (retryStatus === 429)
         throw new GeminiError('AI_RATE_LIMITED', 'Gemini rate limit on retry');
-      throw new GeminiError('AI_FAILED', String(retryErr));
+      throw new GeminiError(
+        'AI_FAILED',
+        `retry failed: ${retryMsg} (first: ${firstMsg})`
+      );
     }
   }
 }

src/lib/server/ai/recipe-extraction-prompt.ts

@@ -1,18 +1,27 @@
 import { z } from 'zod';
 import { SchemaType } from '@google/generative-ai';
 
-export const RECIPE_EXTRACTION_SYSTEM_PROMPT = `Du bist ein Rezept-Extraktions-Assistent.
+export const RECIPE_EXTRACTION_SYSTEM_PROMPT = `Du bist ein hochpräziser OCR-Experte für kulinarische Dokumente (Rezepte). Deine Aufgabe ist die Extraktion von Rezeptdaten (Titel, Zutaten, Zubereitungsschritte, Zeiten, Portionen) in valides JSON gemäß dem vorgegebenen Schema.
-Du bekommst ein Foto eines gedruckten oder handgeschriebenen Rezepts und gibst ein strukturiertes JSON zurück.
 
-Regeln:
+SPRACHE:
-- Extrahiere nur, was tatsächlich auf dem Bild lesbar ist. Sonst Feld auf null (oder leeres Array).
+- Die Texte sind ausschließlich auf Deutsch. Nutze deutsches Sprachverständnis (Umlaute ä/ö/ü/ß, deutsche Zutatennamen, deutsche Maßeinheiten) als starken Prior bei der Rekonstruktion unklarer Zeichen. Gib die Ausgabe vollständig auf Deutsch zurück.
-- Zutaten: quantity als Zahl (Bruchteile wie ½, ¼, 1 ½ als Dezimalzahl 0.5, 0.25, 1.5), unit separat
+
-  (g, ml, l, kg, EL, TL, Stück, Prise, Msp, …).
+LOGIK-REGELN FÜR SCHWER LESBARE TEXTE:
+- Handle als "Kontext-Detektiv": Wenn Zeichen unklar sind, nutze kulinarisches Wissen zur Rekonstruktion (z.B. "Pr-se" -> "Prise").
+- Bei absoluter Unleserlichkeit eines Wortes: Nutze "[?]".
+- Halluziniere keine fehlenden Werte: Wenn eine Mengenangabe komplett fehlt, setze 'quantity' auf null. Was nicht auf dem Bild steht, ist null (oder leeres Array).
+
+FORMATIERUNGS-REGELN:
+- Zutaten: quantity (Zahl) separat von unit (String). Brüche (½, ¼, 1 ½) strikt in Dezimalzahlen (0.5, 0.25, 1.5).
+- Einheiten: Normalisiere auf (g, ml, l, kg, EL, TL, Stück, Prise, Msp).
 - Zubereitungsschritte: pro erkennbarer Nummerierung oder Absatz EIN Schritt.
-- Zeiten in Minuten (ganze Zahl). "1 Stunde" = 60.
+- Zeit: Alle Angaben strikt in Minuten (Integer). "1 Stunde" = 60.
-- Ignoriere Werbung, Foto-Bildunterschriften, Einleitungstexte. Nur das Rezept selbst.
+- Rauschen ignorieren: Keine Werbung, Einleitungstexte oder Bildunterschriften extrahieren.
-- Denke dir NICHTS dazu aus. Was nicht auf dem Bild steht, ist null.
+
-- Antworte ausschließlich im vorgegebenen JSON-Schema. Kein Markdown, kein Prosa-Text.`;
+STRIKTE ANWEISUNG: Gib ausschließlich das rohe JSON-Objekt gemäß Schema zurück. Kein Markdown-Code-Block, kein Einleitungstext, keine Prosa.`;
+
+export const RECIPE_EXTRACTION_USER_PROMPT =
+  'Analysiere dieses Bild hochauflösend. Extrahiere alle rezeptrelevanten Informationen gemäß deiner System-Instruktion. Achte besonders auf schwache Handschriften oder verblassten Text und stelle sicher, dass die Zuordnung von Menge zu Zutat logisch korrekt ist.';
 
 // Gemini responseSchema (Subset von OpenAPI). Wird an GenerativeModel.generateContent
 // übergeben; Gemini respektiert die Struktur und liefert valides JSON.

src/lib/server/db/migrations/013_shopping_list.sql

@@ -0,0 +1,18 @@
+-- Einkaufsliste: haushaltsweit geteilt. shopping_cart_recipe haelt die
+-- Rezepte im Wagen (inkl. gewuenschter Portionsgroesse), shopping_cart_check
+-- die abgehakten aggregierten Zutaten-Zeilen. Aggregation wird bei jedem
+-- Read aus shopping_cart_recipe JOIN ingredient derived — nichts
+-- materialisiert, damit Rezept-Edits live durchschlagen.
+CREATE TABLE shopping_cart_recipe (
+  recipe_id INTEGER PRIMARY KEY REFERENCES recipe(id) ON DELETE CASCADE,
+  servings INTEGER NOT NULL CHECK (servings > 0),
+  added_by_profile_id INTEGER REFERENCES profile(id) ON DELETE SET NULL,
+  added_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE shopping_cart_check (
+  name_key TEXT NOT NULL,
+  unit_key TEXT NOT NULL,
+  checked_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY (name_key, unit_key)
+);

src/lib/server/db/migrations/014_recipe_view.sql

@@ -0,0 +1,10 @@
+-- Merkt je Profil, wann ein Rezept zuletzt angesehen wurde.
+-- Dient als Basis fuer "Zuletzt gesehen"-Sortierung auf der Startseite.
+CREATE TABLE recipe_view (
+  profile_id INTEGER NOT NULL REFERENCES profile(id) ON DELETE CASCADE,
+  recipe_id INTEGER NOT NULL REFERENCES recipe(id) ON DELETE CASCADE,
+  last_viewed_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY (profile_id, recipe_id)
+);
+CREATE INDEX idx_recipe_view_recent
+  ON recipe_view (profile_id, last_viewed_at DESC);

src/lib/server/db/migrations/015_shopping_check_family.sql

@@ -0,0 +1,14 @@
+-- Konsolidierung: unit_key in shopping_cart_check wird zum Family-Key, damit
+-- Abhaks stabil bleiben wenn Display-Unit zwischen g und kg wechselt.
+-- g/kg → 'weight', ml/l → 'volume', Rest bleibt unveraendert.
+UPDATE shopping_cart_check SET unit_key = 'weight' WHERE LOWER(TRIM(unit_key)) IN ('g', 'kg');
+UPDATE shopping_cart_check SET unit_key = 'volume' WHERE LOWER(TRIM(unit_key)) IN ('ml', 'l');
+
+-- Nach Relabeling koennen Duplikate entstehen (zwei Zeilen mit 'weight' pro
+-- name_key). Juengsten Eintrag behalten.
+DELETE FROM shopping_cart_check
+WHERE rowid NOT IN (
+  SELECT MAX(rowid)
+  FROM shopping_cart_check
+  GROUP BY name_key, unit_key
+);

src/lib/server/recipes/search-local.ts

@@ -30,15 +30,12 @@ export function searchLocal(
   db: Database.Database,
   query: string,
   limit = 30,
-  offset = 0,
+  offset = 0
-  domains: string[] = []
 ): SearchHit[] {
   const fts = buildFtsQuery(query);
   if (!fts) return [];
 
   // bm25: lower is better. Use weights: title > tags > ingredients > description
-  const hasFilter = domains.length > 0;
-  const placeholders = hasFilter ? domains.map(() => '?').join(',') : '';
   const sql = `SELECT r.id,
               r.title,
               r.description,
@@ -49,13 +46,9 @@ export function searchLocal(
          FROM recipe r
          JOIN recipe_fts f ON f.rowid = r.id
         WHERE recipe_fts MATCH ?
-          ${hasFilter ? `AND r.source_domain IN (${placeholders})` : ''}
         ORDER BY bm25(recipe_fts, 10.0, 0.5, 2.0, 5.0)
         LIMIT ? OFFSET ?`;
-  const params = hasFilter
+  return db.prepare(sql).all(fts, limit, offset) as SearchHit[];
-    ? [fts, ...domains, limit, offset]
-    : [fts, limit, offset];
-  return db.prepare(sql).all(...params) as SearchHit[];
 }
 
 export function listRecentRecipes(
@@ -95,18 +88,44 @@ export function listAllRecipes(db: Database.Database): SearchHit[] {
     .all() as SearchHit[];
 }
 
-export type AllRecipesSort = 'name' | 'rating' | 'cooked' | 'created';
+export type AllRecipesSort = 'name' | 'rating' | 'cooked' | 'created' | 'viewed';
 
 export function listAllRecipesPaginated(
   db: Database.Database,
   sort: AllRecipesSort,
   limit: number,
-  offset: number
+  offset: number,
+  profileId: number | null = null
 ): SearchHit[] {
+  // 'viewed' branch needs a JOIN against recipe_view — diverges from the
+  // simpler ORDER-BY-only path. We keep it in a separate prepare for
+  // clarity. Without profileId, fall back to alphabetical so the
+  // sort-chip still produces a sensible list.
+  if (sort === 'viewed' && profileId !== null) {
+    return db
+      .prepare(
+        `SELECT r.id,
+                r.title,
+                r.description,
+                r.image_path,
+                r.source_domain,
+                (SELECT AVG(stars) FROM rating WHERE recipe_id = r.id) AS avg_stars,
+                (SELECT MAX(cooked_at) FROM cooking_log WHERE recipe_id = r.id) AS last_cooked_at
+           FROM recipe r
+           LEFT JOIN recipe_view v
+             ON v.recipe_id = r.id AND v.profile_id = ?
+          ORDER BY CASE WHEN v.last_viewed_at IS NULL THEN 1 ELSE 0 END,
+                   v.last_viewed_at DESC,
+                   r.title COLLATE NOCASE ASC
+          LIMIT ? OFFSET ?`
+      )
+      .all(profileId, limit, offset) as SearchHit[];
+  }
+
   // NULLS-last-Emulation per CASE-Expression — SQLite unterstützt NULLS LAST
   // zwar seit 3.30, aber der Pi könnte auf einer älteren Version laufen und
   // CASE ist überall zuverlässig.
-  const orderBy: Record<AllRecipesSort, string> = {
+  const orderBy: Record<Exclude<AllRecipesSort, 'viewed'>, string> = {
     name: 'r.title COLLATE NOCASE ASC',
     rating:
       'CASE WHEN (SELECT AVG(stars) FROM rating WHERE recipe_id = r.id) IS NULL THEN 1 ELSE 0 END, ' +
@@ -116,6 +135,8 @@ export function listAllRecipesPaginated(
       '(SELECT MAX(cooked_at) FROM cooking_log WHERE recipe_id = r.id) DESC, r.title COLLATE NOCASE ASC',
     created: 'r.created_at DESC, r.id DESC'
   };
+  // Without profile, 'viewed' degrades to alphabetical.
+  const effectiveSort = sort === 'viewed' ? 'name' : sort;
   return db
     .prepare(
       `SELECT r.id,
@@ -126,7 +147,7 @@ export function listAllRecipesPaginated(
               (SELECT AVG(stars) FROM rating WHERE recipe_id = r.id) AS avg_stars,
               (SELECT MAX(cooked_at) FROM cooking_log WHERE recipe_id = r.id) AS last_cooked_at
          FROM recipe r
-        ORDER BY ${orderBy[sort]}
+        ORDER BY ${orderBy[effectiveSort]}
         LIMIT ? OFFSET ?`
     )
     .all(limit, offset) as SearchHit[];

src/lib/server/recipes/views.ts

@@ -0,0 +1,37 @@
+import type Database from 'better-sqlite3';
+
+export function recordView(
+  db: Database.Database,
+  profileId: number,
+  recipeId: number
+): void {
+  // ON CONFLICT DO UPDATE bumps only the timestamp field — avoids the
+  // DELETE+INSERT that INSERT OR REPLACE performs under the hood, which would
+  // silently cascade-delete any future FK-referencing children.
+  db.prepare(
+    `INSERT INTO recipe_view (profile_id, recipe_id)
+     VALUES (?, ?)
+     ON CONFLICT(profile_id, recipe_id) DO UPDATE
+       SET last_viewed_at = CURRENT_TIMESTAMP`
+  ).run(profileId, recipeId);
+}
+
+export type ViewRow = {
+  profile_id: number;
+  recipe_id: number;
+  last_viewed_at: string;
+};
+
+export function listViews(
+  db: Database.Database,
+  profileId: number
+): ViewRow[] {
+  return db
+    .prepare(
+      `SELECT profile_id, recipe_id, last_viewed_at
+         FROM recipe_view
+        WHERE profile_id = ?
+        ORDER BY last_viewed_at DESC`
+    )
+    .all(profileId) as ViewRow[];
+}

src/lib/server/shopping/repository.ts

@@ -0,0 +1,262 @@
+import type Database from 'better-sqlite3';
+import { consolidate, unitFamily } from '../unit-consolidation';
+
+// Fallback when a recipe has no servings_default set — matches the default
+// used by RecipeEditor's "new recipe" template.
+const DEFAULT_SERVINGS = 4;
+
+export type ShoppingCartRecipe = {
+  recipe_id: number;
+  title: string;
+  image_path: string | null;
+  servings: number;
+  servings_default: number;
+};
+
+export type ShoppingListRow = {
+  name_key: string;
+  unit_key: string;
+  display_name: string;
+  display_unit: string | null;
+  total_quantity: number | null;
+  from_recipes: string;
+  checked: 0 | 1;
+};
+
+export type ShoppingListSnapshot = {
+  recipes: ShoppingCartRecipe[];
+  rows: ShoppingListRow[];
+  uncheckedCount: number;
+};
+
+export function addRecipeToCart(
+  db: Database.Database,
+  recipeId: number,
+  profileId: number | null,
+  servings?: number
+): void {
+  const row = db
+    .prepare('SELECT servings_default FROM recipe WHERE id = ?')
+    .get(recipeId) as { servings_default: number | null } | undefined;
+  const resolved = servings ?? row?.servings_default ?? DEFAULT_SERVINGS;
+  // ON CONFLICT updates only servings — added_by_profile_id stays with the
+  // first profile that added the recipe (household cart, audit trail).
+  db.prepare(
+    `INSERT INTO shopping_cart_recipe (recipe_id, servings, added_by_profile_id)
+     VALUES (?, ?, ?)
+     ON CONFLICT(recipe_id) DO UPDATE SET servings = excluded.servings`
+  ).run(recipeId, resolved, profileId);
+}
+
+export function removeRecipeFromCart(
+  db: Database.Database,
+  recipeId: number
+): void {
+  db.prepare('DELETE FROM shopping_cart_recipe WHERE recipe_id = ?').run(recipeId);
+}
+
+export function setCartServings(
+  db: Database.Database,
+  recipeId: number,
+  servings: number
+): void {
+  if (!Number.isInteger(servings) || servings <= 0) {
+    throw new Error(`Invalid servings: ${servings}`);
+  }
+  db.prepare(
+    'UPDATE shopping_cart_recipe SET servings = ? WHERE recipe_id = ?'
+  ).run(servings, recipeId);
+}
+
+export function listShoppingList(
+  db: Database.Database
+): ShoppingListSnapshot {
+  const recipes = db
+    .prepare(
+      `SELECT cr.recipe_id, r.title, r.image_path, cr.servings,
+              COALESCE(r.servings_default, cr.servings) AS servings_default
+         FROM shopping_cart_recipe cr
+         JOIN recipe r ON r.id = cr.recipe_id
+        ORDER BY cr.added_at ASC`
+    )
+    .all() as ShoppingCartRecipe[];
+
+  // SQL aggregates per (name, raw-unit). Family-grouping + consolidation is
+  // done in TypeScript so SQL stays readable and the logic is unit-testable.
+  type RawRow = {
+    name_key: string;
+    unit_key: string;
+    display_name: string;
+    display_unit: string | null;
+    total_quantity: number | null;
+    from_recipes: string;
+  };
+
+  const raw = db
+    .prepare(
+      `SELECT
+         LOWER(TRIM(i.name)) AS name_key,
+         LOWER(TRIM(COALESCE(i.unit, ''))) AS unit_key,
+         MIN(i.name) AS display_name,
+         MIN(i.unit) AS display_unit,
+         SUM(i.quantity * cr.servings * 1.0 / NULLIF(COALESCE(r.servings_default, cr.servings), 0)) AS total_quantity,
+         GROUP_CONCAT(DISTINCT r.title) AS from_recipes
+       FROM shopping_cart_recipe cr
+       JOIN recipe r ON r.id = cr.recipe_id
+       JOIN ingredient i ON i.recipe_id = r.id
+       GROUP BY name_key, unit_key`
+    )
+    .all() as RawRow[];
+
+  // Load all checked keys up front
+  const checkedSet = new Set(
+    (
+      db
+        .prepare('SELECT name_key, unit_key FROM shopping_cart_check')
+        .all() as { name_key: string; unit_key: string }[]
+    ).map((c) => `${c.name_key}|${c.unit_key}`)
+  );
+
+  // Group by (name_key, unitFamily(unit_key))
+  const grouped = new Map<string, RawRow[]>();
+  for (const r of raw) {
+    const familyKey = unitFamily(r.unit_key);
+    const key = `${r.name_key}|${familyKey}`;
+    const arr = grouped.get(key) ?? [];
+    arr.push(r);
+    grouped.set(key, arr);
+  }
+
+  const rows: ShoppingListRow[] = [];
+  for (const members of grouped.values()) {
+    const nameKey = members[0].name_key;
+    const familyKey = unitFamily(members[0].unit_key);
+    const consolidated = consolidate(
+      members.map((m) => ({ quantity: m.total_quantity, unit: m.display_unit }))
+    );
+    const displayName = members[0].display_name;
+    const allRecipes = new Set<string>();
+    for (const m of members) {
+      for (const t of m.from_recipes.split(',')) allRecipes.add(t);
+    }
+    rows.push({
+      name_key: nameKey,
+      unit_key: familyKey,
+      display_name: displayName,
+      display_unit: consolidated.unit,
+      total_quantity: consolidated.quantity,
+      from_recipes: [...allRecipes].join(','),
+      checked: checkedSet.has(`${nameKey}|${familyKey}`) ? 1 : 0
+    });
+  }
+
+  // Sort: unchecked first, then alphabetically by display_name
+  rows.sort((a, b) => {
+    if (a.checked !== b.checked) return a.checked - b.checked;
+    return a.display_name.localeCompare(b.display_name, 'de', { sensitivity: 'base' });
+  });
+
+  const uncheckedCount = rows.reduce((n, r) => n + (r.checked ? 0 : 1), 0);
+  return { recipes, rows, uncheckedCount };
+}
+
+export function toggleCheck(
+  db: Database.Database,
+  nameKey: string,
+  unitKey: string,
+  checked: boolean
+): void {
+  if (checked) {
+    db.prepare(
+      `INSERT INTO shopping_cart_check (name_key, unit_key)
+       VALUES (?, ?)
+       ON CONFLICT(name_key, unit_key) DO NOTHING`
+    ).run(nameKey, unitKey);
+  } else {
+    db.prepare(
+      'DELETE FROM shopping_cart_check WHERE name_key = ? AND unit_key = ?'
+    ).run(nameKey, unitKey);
+  }
+}
+
+export function clearCheckedItems(db: Database.Database): void {
+  const tx = db.transaction(() => {
+    // Rohe (name, unit)-Zeilen holen, checked-Status per Family-Key-Lookup
+    // in JS entscheiden. Rezepte mit ALLEN Zeilen abgehakt werden raus.
+    const allRowsRaw = db
+      .prepare(
+        `SELECT
+           cr.recipe_id,
+           LOWER(TRIM(i.name)) AS name_key,
+           LOWER(TRIM(COALESCE(i.unit, ''))) AS unit_key
+         FROM shopping_cart_recipe cr
+         JOIN ingredient i ON i.recipe_id = cr.recipe_id`
+      )
+      .all() as { recipe_id: number; name_key: string; unit_key: string }[];
+
+    const checkSet = new Set(
+      (
+        db
+          .prepare('SELECT name_key, unit_key FROM shopping_cart_check')
+          .all() as { name_key: string; unit_key: string }[]
+      ).map((c) => `${c.name_key}|${c.unit_key}`)
+    );
+
+    const allRows = allRowsRaw.map((r) => ({
+      recipe_id: r.recipe_id,
+      name_key: r.name_key,
+      unit_key: r.unit_key,
+      checked: checkSet.has(`${r.name_key}|${unitFamily(r.unit_key)}`) ? (1 as const) : (0 as const)
+    }));
+
+    const perRecipe = new Map<number, { total: number; checked: number }>();
+    for (const r of allRows) {
+      const e = perRecipe.get(r.recipe_id) ?? { total: 0, checked: 0 };
+      e.total += 1;
+      e.checked += r.checked;
+      perRecipe.set(r.recipe_id, e);
+    }
+    const toRemove: number[] = [];
+    for (const [id, e] of perRecipe) {
+      if (e.total > 0 && e.total === e.checked) toRemove.push(id);
+    }
+    for (const id of toRemove) {
+      db.prepare('DELETE FROM shopping_cart_recipe WHERE recipe_id = ?').run(id);
+    }
+
+    // Orphan-Checks raeumen: Active-Keys nach (name_key, unitFamily(raw-unit))
+    // bauen, damit Checks mit family-key korrekt gematcht werden.
+    const activeRaw = db
+      .prepare(
+        `SELECT DISTINCT
+           LOWER(TRIM(i.name)) AS name_key,
+           LOWER(TRIM(COALESCE(i.unit, ''))) AS unit_key
+         FROM shopping_cart_recipe cr
+         JOIN ingredient i ON i.recipe_id = cr.recipe_id`
+      )
+      .all() as { name_key: string; unit_key: string }[];
+    const activeSet = new Set(
+      activeRaw.map((k) => `${k.name_key}|${unitFamily(k.unit_key)}`)
+    );
+    const allChecks = db
+      .prepare('SELECT name_key, unit_key FROM shopping_cart_check')
+      .all() as { name_key: string; unit_key: string }[];
+    const del = db.prepare(
+      'DELETE FROM shopping_cart_check WHERE name_key = ? AND unit_key = ?'
+    );
+    for (const c of allChecks) {
+      if (!activeSet.has(`${c.name_key}|${c.unit_key}`)) {
+        del.run(c.name_key, c.unit_key);
+      }
+    }
+  });
+  tx();
+}
+
+export function clearCart(db: Database.Database): void {
+  const tx = db.transaction(() => {
+    db.prepare('DELETE FROM shopping_cart_recipe').run();
+    db.prepare('DELETE FROM shopping_cart_check').run();
+  });
+  tx();
+}

src/lib/server/unit-consolidation.ts

@@ -0,0 +1,66 @@
+export type UnitFamily = 'weight' | 'volume' | string;
+
+const WEIGHT_UNITS = new Set(['g', 'kg']);
+const VOLUME_UNITS = new Set(['ml', 'l']);
+
+export function unitFamily(unit: string | null | undefined): UnitFamily {
+  const u = (unit ?? '').trim().toLowerCase();
+  if (WEIGHT_UNITS.has(u)) return 'weight';
+  if (VOLUME_UNITS.has(u)) return 'volume';
+  return u;
+}
+
+export interface QuantityInUnit {
+  quantity: number | null;
+  unit: string | null;
+}
+
+function round2(n: number): number {
+  return Math.round(n * 100) / 100;
+}
+
+/**
+ * Konsolidiert mehrere {quantity, unit}-Eintraege derselben Unit-Family
+ * zu einer gemeinsamen Menge + Display-Unit.
+ *
+ * - Gewicht (g, kg): summiert in g, promoted bei >=1000 g auf kg.
+ * - Volumen (ml, l): summiert in ml, promoted bei >=1000 ml auf l.
+ * - Andere: summiert quantity ohne Umrechnung, Display-Unit vom ersten
+ *   Eintrag.
+ *
+ * quantity=null wird als 0 behandelt. Wenn ALLE quantities null sind,
+ * ist die Gesamtmenge ebenfalls null.
+ */
+export function consolidate(rows: QuantityInUnit[]): QuantityInUnit {
+  if (rows.length === 0) return { quantity: null, unit: null };
+
+  const family = unitFamily(rows[0].unit);
+  const firstUnit = rows[0].unit;
+
+  const allNull = rows.every((r) => r.quantity === null);
+
+  if (family === 'weight') {
+    if (allNull) return { quantity: null, unit: firstUnit };
+    const grams = rows.reduce((sum, r) => {
+      const q = r.quantity ?? 0;
+      return sum + (r.unit?.toLowerCase().trim() === 'kg' ? q * 1000 : q);
+    }, 0);
+    if (grams >= 1000) return { quantity: round2(grams / 1000), unit: 'kg' };
+    return { quantity: round2(grams), unit: 'g' };
+  }
+
+  if (family === 'volume') {
+    if (allNull) return { quantity: null, unit: firstUnit };
+    const ml = rows.reduce((sum, r) => {
+      const q = r.quantity ?? 0;
+      return sum + (r.unit?.toLowerCase().trim() === 'l' ? q * 1000 : q);
+    }, 0);
+    if (ml >= 1000) return { quantity: round2(ml / 1000), unit: 'l' };
+    return { quantity: round2(ml), unit: 'ml' };
+  }
+
+  // Non-family: summiere quantity direkt
+  if (allNull) return { quantity: null, unit: firstUnit };
+  const sum = rows.reduce((acc, r) => acc + (r.quantity ?? 0), 0);
+  return { quantity: round2(sum), unit: firstUnit };
+}

src/lib/sw/cache-strategy.ts

@@ -17,7 +17,8 @@ export function resolveStrategy(req: RequestShape): CacheStrategy {
     path === '/api/recipes/import' ||
     path === '/api/recipes/preview' ||
     path === '/api/recipes/extract-from-photo' ||
-    path.startsWith('/api/recipes/search/web')
+    path.startsWith('/api/recipes/search/web') ||
+    path.startsWith('/api/shopping-list')
   ) {
     return 'network-only';
   }

src/routes/+layout.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
   import { onMount } from 'svelte';
   import { page } from '$app/stores';
-  import { goto, afterNavigate } from '$app/navigation';
+  import { goto, afterNavigate, beforeNavigate } from '$app/navigation';
   import {
     Settings,
     CookingPot,
@@ -9,10 +9,12 @@
     Menu,
     BookOpen,
     ArrowLeft,
-    Camera
+    Camera,
+    ShoppingCart
   } from 'lucide-svelte';
   import { profileStore } from '$lib/client/profile.svelte';
   import { wishlistStore } from '$lib/client/wishlist.svelte';
+  import { shoppingCartStore } from '$lib/client/shopping-cart.svelte';
   import { pwaStore } from '$lib/client/pwa.svelte';
   import { searchFilterStore } from '$lib/client/search-filter.svelte';
   import ProfileSwitcher from '$lib/components/ProfileSwitcher.svelte';
@@ -26,12 +28,13 @@
   import { installPrompt } from '$lib/client/install-prompt.svelte';
   import { registerServiceWorker } from '$lib/client/sw-register';
   import { SearchStore } from '$lib/client/search.svelte';
+  import { recordScroll, restoreScroll } from '$lib/client/scroll-restore';
 
   let { data, children } = $props();
 
   const navStore = new SearchStore({
     pageSize: 30,
-    filterParam: () => {
+    webFilterParam: () => {
       const p = searchFilterStore.queryParam;
       return p ? `&domains=${encodeURIComponent(p)}` : '';
     }
@@ -87,7 +90,19 @@
     navStore.reset();
   }
 
-  afterNavigate(() => {
+  function goBack() {
+    if (typeof history !== 'undefined' && history.length > 1) {
+      history.back();
+    } else {
+      void goto('/');
+    }
+  }
+
+  beforeNavigate((nav) => {
+    recordScroll(nav.from?.url);
+  });
+
+  afterNavigate((nav) => {
     navStore.reset();
     navOpen = false;
     menuOpen = false;
@@ -96,11 +111,14 @@
     // auf einem anderen Gerät oder in einem anderen Tab etwas geändert
     // wurde.
     void wishlistStore.refresh();
+    void shoppingCartStore.refresh();
+    restoreScroll(nav.type, nav.to?.url);
   });
 
   onMount(() => {
     profileStore.load();
     void wishlistStore.refresh();
+    void shoppingCartStore.refresh();
     void searchFilterStore.load();
     void pwaStore.init();
     network.init();
@@ -128,9 +146,9 @@
         <span class="version" title="Deployment-Tag">{data.version}</span>
       </div>
     {:else}
-      <a href="/" class="home-back" aria-label="Zurück zur Startseite">
+      <button type="button" class="home-back" aria-label="Zurück" onclick={goBack}>
         <ArrowLeft size={22} strokeWidth={2} />
-      </a>
+      </button>
     {/if}
     {#if showHeaderSearch}
       <div class="nav-search-wrap" bind:this={navContainer}>
@@ -268,6 +286,16 @@
           <span class="badge">{wishlistStore.count}</span>
         {/if}
       </a>
+      {#if shoppingCartStore.uncheckedCount > 0}
+        <a
+          href="/shopping-list"
+          class="nav-link shopping-link"
+          aria-label={`Einkaufsliste (${shoppingCartStore.uncheckedCount})`}
+        >
+          <ShoppingCart size={20} strokeWidth={2} />
+          <span class="badge">{shoppingCartStore.uncheckedCount}</span>
+        </a>
+      {/if}
       <div class="menu-wrap" bind:this={menuContainer}>
         <button
           class="nav-link"
@@ -361,10 +389,15 @@
     justify-content: center;
     width: 40px;
     height: 40px;
+    border: 0;
     border-radius: var(--pill-radius);
+    background: transparent;
     color: #2b6a3d;
     text-decoration: none;
     flex-shrink: 0;
+    cursor: pointer;
+    font: inherit;
+    padding: 0;
   }
   .home-back:hover {
     background: #f4f8f5;

src/routes/+page.svelte

@@ -1,7 +1,8 @@
 <script lang="ts">
-  import { onMount, tick } from 'svelte';
+  import { onMount, tick, untrack } from 'svelte';
   import { page } from '$app/stores';
-  import { CookingPot, X } from 'lucide-svelte';
+  import { CookingPot, X, ChevronDown } from 'lucide-svelte';
+  import { slide } from 'svelte/transition';
   import type { Snapshot } from './$types';
   import type { SearchHit } from '$lib/server/recipes/search-local';
   import { randomQuote } from '$lib/quotes';
@@ -16,7 +17,7 @@
 
   const store = new SearchStore({
     pageSize: LOCAL_PAGE,
-    filterParam: () => {
+    webFilterParam: () => {
       const p = searchFilterStore.queryParam;
       return p ? `&domains=${encodeURIComponent(p)}` : '';
     }
@@ -27,13 +28,20 @@
   let favorites = $state<SearchHit[]>([]);
 
   const ALL_PAGE = 10;
-  type AllSort = 'name' | 'rating' | 'cooked' | 'created';
+  type AllSort = 'name' | 'rating' | 'cooked' | 'created' | 'viewed';
   const ALL_SORTS: { value: AllSort; label: string }[] = [
     { value: 'name', label: 'Name' },
     { value: 'rating', label: 'Bewertung' },
     { value: 'cooked', label: 'Zuletzt gekocht' },
-    { value: 'created', label: 'Hinzugefügt' }
+    { value: 'created', label: 'Hinzugefügt' },
+    { value: 'viewed', label: 'Zuletzt angesehen' }
   ];
+  function buildAllUrl(sort: AllSort, limit: number, offset: number): string {
+    const profileId = profileStore.active?.id;
+    const profilePart = profileId ? `&profile_id=${profileId}` : '';
+    return `/api/recipes/all?sort=${sort}&limit=${limit}&offset=${offset}${profilePart}`;
+  }
+
   let allRecipes = $state<SearchHit[]>([]);
   let allSort = $state<AllSort>('name');
   let allExhausted = $state(false);
@@ -42,11 +50,68 @@
   let allChips: HTMLElement | undefined = $state();
   let allObserver: IntersectionObserver | null = null;
 
-  export const snapshot: Snapshot<SearchSnapshot> = {
+  type CollapseKey = 'favorites' | 'recent';
-    capture: () => store.captureSnapshot(),
+  const COLLAPSE_STORAGE_KEY = 'kochwas.collapsed.sections';
-    restore: (s) => store.restoreSnapshot(s)
+  let collapsed = $state<Record<CollapseKey, boolean>>({
+    favorites: false,
+    recent: false
+  });
+
+  function toggleCollapsed(key: CollapseKey) {
+    collapsed[key] = !collapsed[key];
+    if (typeof localStorage !== 'undefined') {
+      localStorage.setItem(COLLAPSE_STORAGE_KEY, JSON.stringify(collapsed));
+    }
+  }
+
+  // Snapshot persists across history navigation. We capture not only the
+  // search store, but also the pagination depth ("user had loaded 60
+  // recipes via infinite scroll") so on back-nav we can re-hydrate the
+  // full list in one fetch — otherwise the document is too short and
+  // scroll-restore can't reach the saved Y position.
+  //
+  // SvelteKit calls snapshot.restore AFTER onMount (post-mount tick),
+  // so a flag-based handoff to onMount won't fire — we trigger
+  // rehydrateAll directly from restore. onMount still calls
+  // loadAllMore() for the fresh-mount case; if restore lands first,
+  // allLoading guards the duplicate fetch, otherwise rehydrateAll's
+  // larger result simply overwrites loadAllMore's initial 10 items.
+  type HomeSnapshot = SearchSnapshot & {
+    allLoaded: number;
+    allSort: AllSort;
+    allExhausted: boolean;
   };
 
+  export const snapshot: Snapshot<HomeSnapshot> = {
+    capture: () => ({
+      ...store.captureSnapshot(),
+      allLoaded: allRecipes.length,
+      allSort,
+      allExhausted
+    }),
+    restore: (s) => {
+      store.restoreSnapshot(s);
+      if (s.allLoaded > 0) {
+        allSort = s.allSort;
+        void rehydrateAll(s.allSort, s.allLoaded, s.allExhausted);
+      }
+    }
+  };
+
+  async function rehydrateAll(sort: AllSort, count: number, exhausted: boolean) {
+    allLoading = true;
+    try {
+      const res = await fetch(buildAllUrl(sort, count, 0));
+      if (!res.ok) return;
+      const body = await res.json();
+      const hits = body.hits as SearchHit[];
+      allRecipes = hits;
+      allExhausted = exhausted || hits.length < count;
+    } finally {
+      allLoading = false;
+    }
+  }
+
   async function loadRecent() {
     const res = await fetch('/api/recipes/search');
     const body = await res.json();
@@ -57,9 +122,7 @@
     if (allLoading || allExhausted) return;
     allLoading = true;
     try {
-      const res = await fetch(
+      const res = await fetch(buildAllUrl(allSort, ALL_PAGE, allRecipes.length));
-        `/api/recipes/all?sort=${allSort}&limit=${ALL_PAGE}&offset=${allRecipes.length}`
-      );
       if (!res.ok) return;
       const body = await res.json();
       const more = body.hits as SearchHit[];
@@ -83,9 +146,7 @@
     const chipsBefore = allChips?.getBoundingClientRect().top ?? 0;
     allLoading = true;
     try {
-      const res = await fetch(
+      const res = await fetch(buildAllUrl(next, ALL_PAGE, 0));
-        `/api/recipes/all?sort=${next}&limit=${ALL_PAGE}&offset=0`
-      );
       if (!res.ok) return;
       const body = await res.json();
       const hits = body.hits as SearchHit[];
@@ -121,10 +182,24 @@
     void loadRecent();
     void searchFilterStore.load();
     const saved = localStorage.getItem('kochwas.allSort');
-    if (saved && ['name', 'rating', 'cooked', 'created'].includes(saved)) {
+    if (saved && ['name', 'rating', 'cooked', 'created', 'viewed'].includes(saved)) {
       allSort = saved as AllSort;
     }
+    // Fresh-mount: kick off the initial 10. On back-nav, snapshot.restore
+    // also fires rehydrateAll(60); if it lands first, allLoading guards
+    // this; if loadAllMore lands first, rehydrateAll's larger result
+    // simply overwrites allRecipes once it resolves.
     void loadAllMore();
+    const rawCollapsed = localStorage.getItem(COLLAPSE_STORAGE_KEY);
+    if (rawCollapsed) {
+      try {
+        const parsed = JSON.parse(rawCollapsed) as Partial<Record<CollapseKey, boolean>>;
+        if (typeof parsed.favorites === 'boolean') collapsed.favorites = parsed.favorites;
+        if (typeof parsed.recent === 'boolean') collapsed.recent = parsed.recent;
+      } catch {
+        // Corrupt JSON — keep defaults (both open).
+      }
+    }
   });
 
   // IntersectionObserver an den Sentinel hängen — wenn sichtbar, nachladen.
@@ -156,6 +231,37 @@
     store.reSearch();
   });
 
+  // 'viewed' sort depends on the active profile. When the user switches
+  // profiles, refetch with the new profile_id so the list reflects what
+  // the *current* profile has viewed. Other sorts are profile-agnostic
+  // and don't need this.
+  //
+  // Only `profileStore.active` must be a tracked dep. `allSort` /
+  // `allLoading` are read inside untrack: otherwise the `allLoading = false`
+  // write in the fetch-finally would re-trigger the effect and start the
+  // next fetch → endless loop.
+  $effect(() => {
+    // eslint-disable-next-line @typescript-eslint/no-unused-expressions
+    profileStore.active;
+    untrack(() => {
+      if (allSort !== 'viewed') return;
+      if (allLoading) return;
+      void (async () => {
+        allLoading = true;
+        try {
+          const res = await fetch(buildAllUrl('viewed', ALL_PAGE, 0));
+          if (!res.ok) return;
+          const body = await res.json();
+          const hits = body.hits as SearchHit[];
+          allRecipes = hits;
+          allExhausted = hits.length < ALL_PAGE;
+        } finally {
+          allLoading = false;
+        }
+      })();
+    });
+  });
+
   // Sync current query back into the URL as ?q=... via replaceState,
   // without spamming the history stack. Pushing a new entry happens only
   // when the user clicks a result or otherwise navigates away.
@@ -299,57 +405,91 @@
 {:else}
   {#if profileStore.active && favorites.length > 0}
     <section class="listing">
-      <h2>Deine Favoriten</h2>
+      <button
-      <ul class="cards">
+        type="button"
-        {#each favorites as r (r.id)}
+        class="section-head"
-          <li class="card-wrap">
+        onclick={() => toggleCollapsed('favorites')}
-            <a href={`/recipes/${r.id}`} class="card">
+        aria-expanded={!collapsed.favorites}
-              {#if r.image_path}
+      >
-                <img src={`/images/${r.image_path}`} alt="" loading="lazy" />
+        <ChevronDown
-              {:else}
+          size={18}
-                <div class="placeholder"><CookingPot size={36} /></div>
+          strokeWidth={2.2}
-              {/if}
+          class={collapsed.favorites ? 'chev rotated' : 'chev'}
-              <div class="card-body">
+        />
-                <div class="title">{r.title}</div>
+        <h2>Deine Favoriten</h2>
-                {#if r.source_domain}
+        <span class="count">{favorites.length}</span>
-                  <div class="domain">{r.source_domain}</div>
+      </button>
-                {/if}
+      {#if !collapsed.favorites}
-              </div>
+        <div transition:slide={{ duration: 180 }}>
-            </a>
+          <ul class="cards">
-          </li>
+            {#each favorites as r (r.id)}
-        {/each}
+              <li class="card-wrap">
-      </ul>
+                <a href={`/recipes/${r.id}`} class="card">
+                  {#if r.image_path}
+                    <img src={`/images/${r.image_path}`} alt="" loading="lazy" />
+                  {:else}
+                    <div class="placeholder"><CookingPot size={36} /></div>
+                  {/if}
+                  <div class="card-body">
+                    <div class="title">{r.title}</div>
+                    {#if r.source_domain}
+                      <div class="domain">{r.source_domain}</div>
+                    {/if}
+                  </div>
+                </a>
+              </li>
+            {/each}
+          </ul>
+        </div>
+      {/if}
     </section>
   {/if}
   {#if recent.length > 0}
     <section class="listing">
-      <h2>Zuletzt hinzugefügt</h2>
+      <button
-      <ul class="cards">
+        type="button"
-        {#each recent as r (r.id)}
+        class="section-head"
-          <li class="card-wrap">
+        onclick={() => toggleCollapsed('recent')}
-            <a href={`/recipes/${r.id}`} class="card">
+        aria-expanded={!collapsed.recent}
-              {#if r.image_path}
+      >
-                <img src={`/images/${r.image_path}`} alt="" loading="lazy" />
+        <ChevronDown
-              {:else}
+          size={18}
-                <div class="placeholder"><CookingPot size={36} /></div>
+          strokeWidth={2.2}
-              {/if}
+          class={collapsed.recent ? 'chev rotated' : 'chev'}
-              <div class="card-body">
+        />
-                <div class="title">{r.title}</div>
+        <h2>Zuletzt hinzugefügt</h2>
-                {#if r.source_domain}
+        <span class="count">{recent.length}</span>
-                  <div class="domain">{r.source_domain}</div>
+      </button>
-                {/if}
+      {#if !collapsed.recent}
-              </div>
+        <div transition:slide={{ duration: 180 }}>
-            </a>
+          <ul class="cards">
-            <button
+            {#each recent as r (r.id)}
-              class="dismiss"
+              <li class="card-wrap">
-              aria-label="Aus Zuletzt-hinzugefügt entfernen"
+                <a href={`/recipes/${r.id}`} class="card">
-              onclick={(e) => dismissFromRecent(r.id, e)}
+                  {#if r.image_path}
-            >
+                    <img src={`/images/${r.image_path}`} alt="" loading="lazy" />
-              <X size={16} strokeWidth={2.5} />
+                  {:else}
-            </button>
+                    <div class="placeholder"><CookingPot size={36} /></div>
-          </li>
+                  {/if}
-        {/each}
+                  <div class="card-body">
-      </ul>
+                    <div class="title">{r.title}</div>
+                    {#if r.source_domain}
+                      <div class="domain">{r.source_domain}</div>
+                    {/if}
+                  </div>
+                </a>
+                <button
+                  class="dismiss"
+                  aria-label="Aus Zuletzt-hinzugefügt entfernen"
+                  onclick={(e) => dismissFromRecent(r.id, e)}
+                >
+                  <X size={16} strokeWidth={2.5} />
+                </button>
+              </li>
+            {/each}
+          </ul>
+        </div>
+      {/if}
     </section>
   {/if}
   <section class="listing">
@@ -469,6 +609,49 @@
     color: #444;
     margin: 0 0 0.75rem;
   }
+  .section-head {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    width: 100%;
+    padding: 0.4rem 0.25rem;
+    background: transparent;
+    border: 0;
+    border-radius: 8px;
+    text-align: left;
+    cursor: pointer;
+    font-family: inherit;
+    color: inherit;
+    min-height: 44px;
+    margin-bottom: 0.4rem;
+  }
+  .section-head:hover {
+    background: #f4f8f5;
+  }
+  .section-head:focus-visible {
+    outline: 2px solid #2b6a3d;
+    outline-offset: 2px;
+  }
+  .section-head h2 {
+    margin: 0;
+    font-size: 1.05rem;
+    color: #444;
+    font-weight: 600;
+  }
+  .section-head .count {
+    margin-left: auto;
+    color: #888;
+    font-size: 0.85rem;
+    font-variant-numeric: tabular-nums;
+  }
+  .section-head :global(.chev) {
+    color: #2b6a3d;
+    flex-shrink: 0;
+    transition: transform 180ms;
+  }
+  .section-head :global(.chev.rotated) {
+    transform: rotate(-90deg);
+  }
   .listing-head {
     display: flex;
     align-items: center;

src/routes/api/recipes/[id]/view/+server.ts

@@ -0,0 +1,27 @@
+import type { RequestHandler } from './$types';
+import { z } from 'zod';
+import { error } from '@sveltejs/kit';
+import { getDb } from '$lib/server/db';
+import { validateBody, parsePositiveIntParam } from '$lib/server/api-helpers';
+import { recordView } from '$lib/server/recipes/views';
+
+const Schema = z.object({
+  profile_id: z.number().int().positive()
+});
+
+export const POST: RequestHandler = async ({ params, request }) => {
+  const recipeId = parsePositiveIntParam(params.id, 'id');
+  const body = validateBody(await request.json().catch(() => null), Schema);
+
+  try {
+    recordView(getDb(), body.profile_id, recipeId);
+  } catch (e) {
+    // FK violation (unknown profile or recipe) → 404
+    if (e instanceof Error && /FOREIGN KEY constraint failed/i.test(e.message)) {
+      error(404, { message: 'Recipe or profile not found' });
+    }
+    throw e;
+  }
+
+  return new Response(null, { status: 204 });
+};

src/routes/api/recipes/all/+server.ts

@@ -6,13 +6,30 @@ import {
   type AllRecipesSort
 } from '$lib/server/recipes/search-local';
 
-const VALID_SORTS = new Set<AllRecipesSort>(['name', 'rating', 'cooked', 'created']);
+const VALID_SORTS = new Set<AllRecipesSort>([
+  'name',
+  'rating',
+  'cooked',
+  'created',
+  'viewed'
+]);
+
+function parseProfileId(raw: string | null): number | null {
+  if (!raw) return null;
+  const n = Number(raw);
+  return Number.isInteger(n) && n > 0 ? n : null;
+}
 
 export const GET: RequestHandler = async ({ url }) => {
   const sortRaw = (url.searchParams.get('sort') ?? 'name') as AllRecipesSort;
   if (!VALID_SORTS.has(sortRaw)) error(400, { message: 'Invalid sort' });
-  const limit = Math.min(50, Math.max(1, Number(url.searchParams.get('limit') ?? 10)));
+  // Cap is 200 (not 10's typical paging step) to support snapshot-based
+  // pagination restore on /+page.svelte: when the user navigates back
+  // after deep infinite-scroll, we re-hydrate the full loaded count in
+  // one round-trip so document height matches and scroll-restore lands.
+  const limit = Math.min(200, Math.max(1, Number(url.searchParams.get('limit') ?? 10)));
   const offset = Math.max(0, Number(url.searchParams.get('offset') ?? 0));
-  const hits = listAllRecipesPaginated(getDb(), sortRaw, limit, offset);
+  const profileId = parseProfileId(url.searchParams.get('profile_id'));
+  const hits = listAllRecipesPaginated(getDb(), sortRaw, limit, offset, profileId);
   return json({ sort: sortRaw, limit, offset, hits });
 };

src/routes/api/recipes/extract-from-photo/+server.ts

@@ -121,9 +121,11 @@ export const POST: RequestHandler = async ({ request, getClientAddress }) => {
             : e.code === 'AI_NOT_CONFIGURED'
               ? 503
               : 503;
-      // Nur Code + Meta loggen, niemals Prompt/Response-Inhalt.
+      // Nur Code + Meta + Error-Message loggen, niemals Prompt/Response-Inhalt.
+      // e.message enthaelt z.B. Zod-Validierungspfade oder "non-JSON output" --
+      // kein AI-Content, aber die Diagnose-Info, warum AI_FAILED kam.
       console.warn(
-        `[extract-from-photo] ${e.code} after ${Date.now() - startedAt}ms, ${preprocessed.buffer.byteLength} bytes`
+        `[extract-from-photo] ${e.code} after ${Date.now() - startedAt}ms, ${preprocessed.buffer.byteLength} bytes: ${e.message}`
       );
       return errJson(status, e.code, 'Die Bild-Analyse ist fehlgeschlagen.');
     }

src/routes/api/recipes/search/+server.ts

@@ -7,13 +7,9 @@ export const GET: RequestHandler = async ({ url }) => {
   const q = url.searchParams.get('q')?.trim() ?? '';
   const limit = Math.min(Number(url.searchParams.get('limit') ?? 30), 100);
   const offset = Math.max(0, Number(url.searchParams.get('offset') ?? 0));
-  const domains = (url.searchParams.get('domains') ?? '')
-    .split(',')
-    .map((d) => d.trim())
-    .filter(Boolean);
   const hits =
     q.length >= 1
-      ? searchLocal(getDb(), q, limit, offset, domains)
+      ? searchLocal(getDb(), q, limit, offset)
       : offset === 0
         ? listRecentRecipes(getDb(), limit)
         : [];

src/routes/api/shopping-list/+server.ts

@@ -0,0 +1,13 @@
+import type { RequestHandler } from './$types';
+import { json } from '@sveltejs/kit';
+import { getDb } from '$lib/server/db';
+import { clearCart, listShoppingList } from '$lib/server/shopping/repository';
+
+export const GET: RequestHandler = async () => {
+  return json(listShoppingList(getDb()));
+};
+
+export const DELETE: RequestHandler = async () => {
+  clearCart(getDb());
+  return json({ ok: true });
+};

src/routes/api/shopping-list/check/+server.ts

@@ -0,0 +1,23 @@
+import type { RequestHandler } from './$types';
+import { json } from '@sveltejs/kit';
+import { z } from 'zod';
+import { getDb } from '$lib/server/db';
+import { validateBody } from '$lib/server/api-helpers';
+import { toggleCheck } from '$lib/server/shopping/repository';
+
+const CheckSchema = z.object({
+  name_key: z.string().min(1).max(200),
+  unit_key: z.string().max(50) // kann leer sein
+});
+
+export const POST: RequestHandler = async ({ request }) => {
+  const data = validateBody(await request.json().catch(() => null), CheckSchema);
+  toggleCheck(getDb(), data.name_key, data.unit_key, true);
+  return json({ ok: true });
+};
+
+export const DELETE: RequestHandler = async ({ request }) => {
+  const data = validateBody(await request.json().catch(() => null), CheckSchema);
+  toggleCheck(getDb(), data.name_key, data.unit_key, false);
+  return json({ ok: true });
+};

src/routes/api/shopping-list/checked/+server.ts

@@ -0,0 +1,9 @@
+import type { RequestHandler } from './$types';
+import { json } from '@sveltejs/kit';
+import { getDb } from '$lib/server/db';
+import { clearCheckedItems } from '$lib/server/shopping/repository';
+
+export const DELETE: RequestHandler = async () => {
+  clearCheckedItems(getDb());
+  return json({ ok: true });
+};

src/routes/api/shopping-list/recipe/+server.ts

@@ -0,0 +1,18 @@
+import type { RequestHandler } from './$types';
+import { json } from '@sveltejs/kit';
+import { z } from 'zod';
+import { getDb } from '$lib/server/db';
+import { validateBody } from '$lib/server/api-helpers';
+import { addRecipeToCart } from '$lib/server/shopping/repository';
+
+const AddSchema = z.object({
+  recipe_id: z.number().int().positive(),
+  servings: z.number().int().min(1).max(50).optional(),
+  profile_id: z.number().int().positive().optional()
+});
+
+export const POST: RequestHandler = async ({ request }) => {
+  const data = validateBody(await request.json().catch(() => null), AddSchema);
+  addRecipeToCart(getDb(), data.recipe_id, data.profile_id ?? null, data.servings);
+  return json({ ok: true }, { status: 201 });
+};

src/routes/api/shopping-list/recipe/[recipe_id]/+server.ts

@@ -0,0 +1,23 @@
+import type { RequestHandler } from './$types';
+import { json } from '@sveltejs/kit';
+import { z } from 'zod';
+import { getDb } from '$lib/server/db';
+import { parsePositiveIntParam, validateBody } from '$lib/server/api-helpers';
+import { removeRecipeFromCart, setCartServings } from '$lib/server/shopping/repository';
+
+const PatchSchema = z.object({
+  servings: z.number().int().min(1).max(50)
+});
+
+export const PATCH: RequestHandler = async ({ params, request }) => {
+  const id = parsePositiveIntParam(params.recipe_id, 'recipe_id');
+  const data = validateBody(await request.json().catch(() => null), PatchSchema);
+  setCartServings(getDb(), id, data.servings);
+  return json({ ok: true });
+};
+
+export const DELETE: RequestHandler = async ({ params }) => {
+  const id = parsePositiveIntParam(params.recipe_id, 'recipe_id');
+  removeRecipeFromCart(getDb(), id);
+  return json({ ok: true });
+};

src/routes/recipes/[id]/+page.svelte

@@ -355,9 +355,28 @@
       }
     };
     document.addEventListener('visibilitychange', onVisibility);
+
     return () => document.removeEventListener('visibilitychange', onVisibility);
   });
 
+  // Track view per active profile (fire-and-forget). Lives in $effect, not
+  // onMount, because profileStore.load() runs from layout's onMount and the
+  // child onMount fires first — at mount time profileStore.active is still
+  // null on cold loads. The effect re-runs once active populates, the
+  // viewBeaconSent flag prevents duplicate POSTs on subsequent profile
+  // switches within the same page instance.
+  let viewBeaconSent = $state(false);
+  $effect(() => {
+    if (viewBeaconSent) return;
+    if (!profileStore.active) return;
+    viewBeaconSent = true;
+    void fetch(`/api/recipes/${data.recipe.id}/view`, {
+      method: 'POST',
+      headers: { 'content-type': 'application/json' },
+      body: JSON.stringify({ profile_id: profileStore.active.id })
+    });
+  });
+
   onDestroy(() => {
     void releaseWakeLock();
   });

src/routes/shopping-list/+page.svelte

@@ -0,0 +1,166 @@
+<script lang="ts">
+  import { onMount } from 'svelte';
+  import { ShoppingCart } from 'lucide-svelte';
+  import type { ShoppingListSnapshot } from '$lib/server/shopping/repository';
+  import ShoppingListRow from '$lib/components/ShoppingListRow.svelte';
+  import ShoppingCartChip from '$lib/components/ShoppingCartChip.svelte';
+  import type { ShoppingListRow as Row } from '$lib/server/shopping/repository';
+  import { shoppingCartStore } from '$lib/client/shopping-cart.svelte';
+  import { confirmAction } from '$lib/client/confirm.svelte';
+  import { requireOnline } from '$lib/client/require-online';
+
+  let snapshot = $state<ShoppingListSnapshot>({ recipes: [], rows: [], uncheckedCount: 0 });
+  let loading = $state(true);
+  const hasChecked = $derived(snapshot.rows.some((r) => r.checked === 1));
+
+  async function load() {
+    loading = true;
+    try {
+      const res = await fetch('/api/shopping-list');
+      snapshot = await res.json();
+    } finally {
+      loading = false;
+    }
+  }
+
+  async function onToggleRow(row: Row, next: boolean) {
+    if (!requireOnline('Abhaken')) return;
+    const method = next ? 'POST' : 'DELETE';
+    await fetch('/api/shopping-list/check', {
+      method,
+      headers: { 'content-type': 'application/json' },
+      body: JSON.stringify({ name_key: row.name_key, unit_key: row.unit_key })
+    });
+    await load();
+    void shoppingCartStore.refresh();
+  }
+
+  async function onServingsChange(recipeId: number, servings: number) {
+    if (!requireOnline('Portionen-Aenderung')) return;
+    await fetch(`/api/shopping-list/recipe/${recipeId}`, {
+      method: 'PATCH',
+      headers: { 'content-type': 'application/json' },
+      body: JSON.stringify({ servings })
+    });
+    await load();
+    void shoppingCartStore.refresh();
+  }
+
+  async function onRemoveRecipe(recipeId: number) {
+    if (!requireOnline('Rezept-Entfernung')) return;
+    await fetch(`/api/shopping-list/recipe/${recipeId}`, { method: 'DELETE' });
+    await load();
+    void shoppingCartStore.refresh();
+  }
+
+  async function clearChecked() {
+    if (!requireOnline('Erledigte entfernen')) return;
+    await fetch('/api/shopping-list/checked', { method: 'DELETE' });
+    await load();
+    void shoppingCartStore.refresh();
+  }
+
+  async function clearAll() {
+    if (!requireOnline('Liste leeren')) return;
+    const ok = await confirmAction({
+      title: 'Einkaufsliste leeren?',
+      message: 'Alle Rezepte und abgehakten Zutaten werden entfernt. Das lässt sich nicht rückgängig machen.',
+      confirmLabel: 'Leeren',
+      destructive: true
+    });
+    if (!ok) return;
+    await fetch('/api/shopping-list', { method: 'DELETE' });
+    await load();
+    void shoppingCartStore.refresh();
+  }
+
+  onMount(load);
+</script>
+
+<header class="head">
+  <h1>Einkaufsliste</h1>
+  {#if snapshot.recipes.length > 0}
+    <p class="sub">
+      {snapshot.uncheckedCount} noch zu besorgen · {snapshot.recipes.length} Rezept{snapshot.recipes.length === 1 ? '' : 'e'} im Wagen
+    </p>
+  {/if}
+</header>
+
+{#if loading}
+  <p class="muted">Lädt …</p>
+{:else if snapshot.recipes.length === 0}
+  <section class="empty">
+    <div class="big"><ShoppingCart size={48} strokeWidth={1.5} /></div>
+    <p>Einkaufswagen ist leer.</p>
+    <p class="hint">Lege Rezepte auf der Wunschliste in den Wagen, um sie hier zu sehen.</p>
+  </section>
+{:else}
+  <div class="chips">
+    {#each snapshot.recipes as r (r.recipe_id)}
+      <ShoppingCartChip recipe={r} {onServingsChange} onRemove={onRemoveRecipe} />
+    {/each}
+  </div>
+  <ul class="list">
+    {#each snapshot.rows as row (row.name_key + '|' + row.unit_key)}
+      <li>
+        <ShoppingListRow {row} onToggle={onToggleRow} />
+      </li>
+    {/each}
+  </ul>
+  <div class="footer">
+    {#if hasChecked}
+      <button class="btn secondary" onclick={clearChecked}>Erledigte entfernen</button>
+    {/if}
+    <button class="btn destructive" onclick={clearAll}>Liste leeren</button>
+  </div>
+{/if}
+
+<style>
+  .head { padding: 1.25rem 0 0.5rem; }
+  .head h1 { margin: 0; font-size: 1.6rem; color: #2b6a3d; }
+  .sub { margin: 0.2rem 0 0; color: #666; }
+  .muted { color: #888; text-align: center; padding: 2rem 0; }
+  .empty { text-align: center; padding: 3rem 1rem; }
+  .big { color: #8fb097; display: inline-flex; margin: 0 0 0.5rem; }
+  .hint { color: #888; font-size: 0.9rem; }
+  .list {
+    list-style: none;
+    padding: 0;
+    margin: 0.75rem 0;
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+  }
+  .chips {
+    display: flex;
+    gap: 0.5rem;
+    overflow-x: auto;
+    padding: 0.5rem 0;
+    margin: 0.5rem 0;
+    -webkit-overflow-scrolling: touch;
+  }
+  .footer {
+    position: sticky;
+    bottom: 0;
+    background: #f4f8f5;
+    padding: 0.75rem 0;
+    display: flex;
+    gap: 0.5rem;
+    justify-content: flex-end;
+    margin-top: 1rem;
+    border-top: 1px solid #e4eae7;
+  }
+  .btn {
+    padding: 0.6rem 1rem;
+    border-radius: 10px;
+    border: 1px solid #cfd9d1;
+    background: white;
+    cursor: pointer;
+    font-family: inherit;
+    font-size: 0.9rem;
+    min-height: 44px;
+  }
+  .btn.secondary { color: #2b6a3d; border-color: #b7d6c2; }
+  .btn.destructive { color: #c53030; border-color: #f1b4b4; }
+  .btn.destructive:hover { background: #fdf3f3; }
+</style>

src/routes/wishlist/+page.svelte

@@ -1,8 +1,9 @@
 <script lang="ts">
   import { onMount } from 'svelte';
-  import { Utensils, Trash2, CookingPot } from 'lucide-svelte';
+  import { Utensils, Trash2, CookingPot, ShoppingCart } from 'lucide-svelte';
   import { profileStore, requireProfile } from '$lib/client/profile.svelte';
   import { wishlistStore } from '$lib/client/wishlist.svelte';
+  import { shoppingCartStore } from '$lib/client/shopping-cart.svelte';
   import { confirmAction } from '$lib/client/confirm.svelte';
   import { requireOnline } from '$lib/client/require-online';
   import type { WishlistEntry, SortKey } from '$lib/server/wishlist/repository';
@@ -70,9 +71,19 @@
     void wishlistStore.refresh();
   }
 
+  async function toggleCart(entry: WishlistEntry) {
+    if (!requireOnline('Die Einkaufsliste')) return;
+    if (shoppingCartStore.isInCart(entry.recipe_id)) {
+      await shoppingCartStore.removeRecipe(entry.recipe_id);
+    } else {
+      await shoppingCartStore.addRecipe(entry.recipe_id);
+    }
+  }
+
   onMount(() => {
     void load();
     void wishlistStore.refresh();
+    void shoppingCartStore.refresh();
   });
 
   function resolveImage(p: string | null): string | null {
@@ -125,16 +136,13 @@
               {#if e.wanted_by_names}
                 <span class="wanted-by">{e.wanted_by_names}</span>
               {/if}
-              {#if e.source_domain}
-                <span class="src">· {e.source_domain}</span>
-              {/if}
               {#if e.avg_stars !== null}
                 <span>· ★ {e.avg_stars.toFixed(1)}</span>
               {/if}
             </div>
           </div>
         </a>
-        <div class="actions">
+        <div class="actions-top">
           <button
             class="like"
             class:active={e.on_my_wishlist}
@@ -146,6 +154,16 @@
               <span class="count">{e.wanted_by_count}</span>
             {/if}
           </button>
+          <button
+            class="cart"
+            class:active={shoppingCartStore.isInCart(e.recipe_id)}
+            aria-label={shoppingCartStore.isInCart(e.recipe_id)
+              ? 'Aus Einkaufswagen entfernen'
+              : 'In den Einkaufswagen'}
+            onclick={() => toggleCart(e)}
+          >
+            <ShoppingCart size={18} strokeWidth={2} />
+          </button>
           <button
             class="del"
             aria-label="Für alle entfernen"
@@ -227,6 +245,7 @@
     gap: 0.75rem;
   }
   .card {
+    position: relative;
     display: flex;
     align-items: stretch;
     background: white;
@@ -255,7 +274,7 @@
   }
   .text {
     flex: 1;
-    padding: 0.7rem 0.75rem;
+    padding: 0.7rem 170px 0.7rem 0.75rem;
     min-width: 0;
     display: flex;
     flex-direction: column;
@@ -265,6 +284,8 @@
     font-weight: 600;
     font-size: 1rem;
     line-height: 1.3;
+    overflow-wrap: break-word;
+    word-break: break-word;
   }
   .meta {
     display: flex;
@@ -278,18 +299,19 @@
     color: #2b6a3d;
     font-weight: 500;
   }
-  .actions {
+  .actions-top {
+    position: absolute;
+    top: 0.5rem;
+    right: 0.5rem;
     display: flex;
-    flex-direction: column;
     gap: 0.4rem;
-    align-items: stretch;
+    z-index: 1;
-    justify-content: center;
-    padding: 0.5rem 0.6rem 0.5rem 0;
   }
   .like,
+  .cart,
   .del {
-    min-width: 48px;
+    min-width: 44px;
-    min-height: 40px;
+    min-height: 44px;
     border-radius: 10px;
     border: 1px solid #e4eae7;
     background: white;
@@ -297,8 +319,8 @@
     display: inline-flex;
     align-items: center;
     justify-content: center;
-    gap: 0.3rem;
+    gap: 0.25rem;
-    font-size: 1.05rem;
+    font-size: 1rem;
     color: #444;
   }
   .like.active {
@@ -306,6 +328,11 @@
     background: #eaf4ed;
     border-color: #b7d6c2;
   }
+  .cart.active {
+    color: #2b6a3d;
+    background: #eaf4ed;
+    border-color: #b7d6c2;
+  }
   .del:hover {
     color: #c53030;
     border-color: #f1b4b4;
@@ -315,4 +342,51 @@
     font-size: 0.85rem;
     font-weight: 600;
   }
+
+  /* Handy: 2-Spalten-Grid — Bild links ueber alle Rows, rechts stapeln
+     sich Titel, Meta, Actions. `display: contents` auf .body/.text zieht
+     die DOM-Kinder direkt in die Card-Grid, ohne Markup-Umbau. Vermeidet
+     die tote Weissflaeche unter dem Bild bei schmalen Viewports. */
+  @media (max-width: 600px) {
+    .card {
+      display: grid;
+      grid-template-columns: 96px 1fr;
+      grid-template-areas:
+        'img title'
+        'img meta'
+        'img actions';
+      column-gap: 0;
+    }
+    .body {
+      display: contents;
+    }
+    .body img,
+    .placeholder {
+      grid-area: img;
+      width: 96px;
+      height: 100%;
+      min-height: 100%;
+    }
+    .text {
+      display: contents;
+    }
+    .title {
+      grid-area: title;
+      padding: 0.7rem 0.75rem 0.15rem;
+    }
+    .meta {
+      grid-area: meta;
+      padding: 0 0.75rem;
+      margin-top: 0;
+    }
+    .actions-top {
+      grid-area: actions;
+      position: static;
+      display: flex;
+      gap: 0.4rem;
+      padding: 0.5rem 0.75rem 0.7rem;
+      justify-content: flex-end;
+      align-self: end;
+    }
+  }
 </style>

tests/e2e/remote/fixtures/api-cleanup.ts

@@ -65,3 +65,10 @@ export async function cleanupE2EComments(
     }
   }
 }
+
+/**
+ * Leert den haushaltsweiten Einkaufswagen. Idempotent.
+ */
+export async function clearShoppingCart(api: APIRequestContext): Promise<void> {
+  await api.delete('/api/shopping-list');
+}

tests/e2e/remote/shopping.spec.ts

@@ -0,0 +1,117 @@
+import { test, expect } from '@playwright/test';
+import { setActiveProfile, HENDRIK_ID } from './fixtures/profile';
+import { clearShoppingCart } from './fixtures/api-cleanup';
+
+test.describe('Einkaufsliste E2E', () => {
+  test.beforeEach(async ({ request }) => {
+    await clearShoppingCart(request);
+  });
+
+  test.afterEach(async ({ request }) => {
+    await clearShoppingCart(request);
+  });
+
+  test('Cart-Button auf der Wunschliste erzeugt Header-Badge', async ({ page, request }) => {
+    await setActiveProfile(page, HENDRIK_ID);
+    // Voraussetzung: Dev-System hat mindestens einen Wunschlisten-Eintrag
+    const wlRes = await request.get('/api/wishlist?sort=popular');
+    const wlBody = (await wlRes.json()) as { entries: { recipe_id: number }[] };
+    test.skip(wlBody.entries.length === 0, 'Wunschliste leer auf Dev — Test uebersprungen');
+
+    await page.goto('/wishlist');
+    await page.getByLabel('In den Einkaufswagen').first().click();
+    await expect(page.getByLabel(/Einkaufsliste \(\d+\)/)).toBeVisible();
+  });
+
+  test('Shopping-List-Seite zeigt Rezept-Chip + Zutaten', async ({ page, request }) => {
+    await setActiveProfile(page, HENDRIK_ID);
+    const wlRes = await request.get('/api/wishlist?sort=popular');
+    const wlBody = (await wlRes.json()) as { entries: { recipe_id: number }[] };
+    test.skip(wlBody.entries.length === 0, 'Wunschliste leer');
+    const recipeId = wlBody.entries[0].recipe_id;
+
+    await request.post('/api/shopping-list/recipe', { data: { recipe_id: recipeId } });
+    await page.goto('/shopping-list');
+
+    await expect(page.getByRole('heading', { level: 1, name: 'Einkaufsliste' })).toBeVisible();
+    // Chip fuers Rezept sichtbar
+    await expect(page.getByLabel('Portion weniger').first()).toBeVisible();
+    // Mindestens eine Zutatenzeile
+    await expect(page.locator('.row').first()).toBeVisible();
+  });
+
+  test('Portions-Stepper veraendert Mengen live', async ({ page, request }) => {
+    await setActiveProfile(page, HENDRIK_ID);
+    const wlRes = await request.get('/api/wishlist?sort=popular');
+    const wlBody = (await wlRes.json()) as { entries: { recipe_id: number }[] };
+    test.skip(wlBody.entries.length === 0, 'Wunschliste leer');
+
+    await request.post('/api/shopping-list/recipe', {
+      data: { recipe_id: wlBody.entries[0].recipe_id, servings: 4 }
+    });
+    await page.goto('/shopping-list');
+    // Menge der ersten Zeile "vorher" lesen
+    const qtyBefore = await page.locator('.qty').first().textContent();
+    // Portion +1
+    await page.getByLabel('Portion mehr').first().click();
+    // Nach Fetch+Rerender muss die Menge sich aendern (ungleich dem Vorher-Wert)
+    await expect
+      .poll(async () => (await page.locator('.qty').first().textContent())?.trim())
+      .not.toBe(qtyBefore?.trim());
+  });
+
+  test('Abhaken: Zeile durchgestrichen, Badge-Count sinkt, persistiert nach Reload', async ({ page, request }) => {
+    await setActiveProfile(page, HENDRIK_ID);
+    const wlRes = await request.get('/api/wishlist?sort=popular');
+    const wlBody = (await wlRes.json()) as { entries: { recipe_id: number }[] };
+    test.skip(wlBody.entries.length === 0, 'Wunschliste leer');
+
+    await request.post('/api/shopping-list/recipe', {
+      data: { recipe_id: wlBody.entries[0].recipe_id }
+    });
+    await page.goto('/shopping-list');
+
+    const countBadge = page.getByLabel(/Einkaufsliste \(\d+\)/);
+    const badgeTextBefore = await countBadge.textContent();
+    const numBefore = Number((badgeTextBefore ?? '').replace(/\D+/g, '')) || 0;
+
+    // Anzahl abgehakter Zeilen vorher (sollte 0 sein, weil beforeEach cart leert)
+    const checkedBefore = await page.locator('label.row.checked').count();
+    // Erste Zeile abhaken — Playwright laesst die Checkbox direkt interagieren
+    await page.locator('label.row').first().locator('input[type=checkbox]').check();
+    // Nach Store-Refresh sortiert SQL "ORDER BY checked ASC" abgehakte ans
+    // Ende, also pruefen wir die Gesamtzahl, nicht die Position.
+    await expect(page.locator('label.row.checked')).toHaveCount(checkedBefore + 1);
+
+    // Badge muss sinken (nach Store-Refresh)
+    await expect
+      .poll(async () => {
+        const t = (await countBadge.textContent()) ?? '';
+        return Number(t.replace(/\D+/g, '')) || 0;
+      })
+      .toBeLessThan(numBefore);
+
+    // Reload persistiert
+    await page.reload();
+    await expect(page.locator('label.row.checked').first()).toBeVisible();
+  });
+
+  test('Liste leeren: Confirm + Empty-State + Badge weg', async ({ page, request }) => {
+    await setActiveProfile(page, HENDRIK_ID);
+    const wlRes = await request.get('/api/wishlist?sort=popular');
+    const wlBody = (await wlRes.json()) as { entries: { recipe_id: number }[] };
+    test.skip(wlBody.entries.length === 0, 'Wunschliste leer');
+
+    await request.post('/api/shopping-list/recipe', {
+      data: { recipe_id: wlBody.entries[0].recipe_id }
+    });
+    await page.goto('/shopping-list');
+
+    await page.getByRole('button', { name: 'Liste leeren' }).click();
+    // Confirm-Dialog (ConfirmAction nutzt einen App-eigenen Dialog, kein native)
+    await page.getByRole('button', { name: 'Leeren', exact: true }).click();
+
+    await expect(page.getByText('Einkaufswagen ist leer.')).toBeVisible();
+    await expect(page.getByLabel(/Einkaufsliste \(\d+\)/)).toHaveCount(0);
+  });
+});

tests/integration/recipe-views.test.ts

@@ -0,0 +1,270 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { openInMemoryForTest } from '../../src/lib/server/db';
+
+// ---------------------------------------------------------------------------
+// Module-level mock so the POST handler uses the in-memory test DB.
+// Must be declared before any import of the handler itself.
+// ---------------------------------------------------------------------------
+const { testDb } = vi.hoisted(() => ({
+  testDb: { current: null as ReturnType<typeof openInMemoryForTest> | null }
+}));
+
+vi.mock('$lib/server/db', async () => {
+  const actual =
+    await vi.importActual<typeof import('../../src/lib/server/db')>(
+      '../../src/lib/server/db'
+    );
+  return {
+    ...actual,
+    getDb: () => {
+      if (!testDb.current) throw new Error('test DB not initialised');
+      return testDb.current;
+    }
+  };
+});
+
+import { recordView, listViews } from '../../src/lib/server/recipes/views';
+import { createProfile } from '../../src/lib/server/profiles/repository';
+import { listAllRecipesPaginated } from '../../src/lib/server/recipes/search-local';
+import { POST } from '../../src/routes/api/recipes/[id]/view/+server';
+
+function seedRecipe(db: ReturnType<typeof openInMemoryForTest>, title: string): number {
+  const r = db
+    .prepare("INSERT INTO recipe (title, created_at) VALUES (?, datetime('now')) RETURNING id")
+    .get(title) as { id: number };
+  return r.id;
+}
+
+function mkReq(body: unknown) {
+  return new Request('http://test/api/recipes/1/view', {
+    method: 'POST',
+    headers: { 'content-type': 'application/json' },
+    body: JSON.stringify(body)
+  });
+}
+
+describe('014_recipe_views migration', () => {
+  it('creates recipe_view table with expected columns', () => {
+    const db = openInMemoryForTest();
+    const cols = db.prepare("PRAGMA table_info(recipe_view)").all() as Array<{
+      name: string;
+      type: string;
+      notnull: number;
+      pk: number;
+    }>;
+    const byName = Object.fromEntries(cols.map((c) => [c.name, c]));
+    expect(byName.profile_id?.type).toBe('INTEGER');
+    expect(byName.profile_id?.notnull).toBe(1);
+    expect(byName.profile_id?.pk).toBe(1);
+    expect(byName.recipe_id?.type).toBe('INTEGER');
+    expect(byName.recipe_id?.notnull).toBe(1);
+    expect(byName.recipe_id?.pk).toBe(2);
+    expect(byName.last_viewed_at?.type).toBe('TIMESTAMP');
+    expect(byName.last_viewed_at?.notnull).toBe(1);
+  });
+
+  it('has index on (profile_id, last_viewed_at DESC)', () => {
+    const db = openInMemoryForTest();
+    const idxList = db
+      .prepare("PRAGMA index_list(recipe_view)")
+      .all() as Array<{ name: string }>;
+    expect(idxList.some((i) => i.name === 'idx_recipe_view_recent')).toBe(true);
+  });
+});
+
+describe('recordView', () => {
+  it('inserts a view row with default timestamp', () => {
+    const db = openInMemoryForTest();
+    const profile = createProfile(db, 'Test');
+    const recipeId = seedRecipe(db, 'Pasta');
+
+    recordView(db, profile.id, recipeId);
+
+    const rows = listViews(db, profile.id);
+    expect(rows.length).toBe(1);
+    expect(rows[0].recipe_id).toBe(recipeId);
+    expect(rows[0].last_viewed_at).toMatch(/^\d{4}-\d{2}-\d{2}/);
+  });
+
+  it('updates timestamp on subsequent view of same recipe', async () => {
+    const db = openInMemoryForTest();
+    const profile = createProfile(db, 'Test');
+    const recipeId = seedRecipe(db, 'Pasta');
+
+    recordView(db, profile.id, recipeId);
+    const first = listViews(db, profile.id)[0].last_viewed_at;
+
+    // tiny delay so the second timestamp differs
+    await new Promise((r) => setTimeout(r, 1100));
+    recordView(db, profile.id, recipeId);
+
+    const rows = listViews(db, profile.id);
+    expect(rows.length).toBe(1);
+    expect(rows[0].last_viewed_at >= first).toBe(true);
+  });
+
+  it('throws on unknown profile_id (FK)', () => {
+    const db = openInMemoryForTest();
+    const recipeId = seedRecipe(db, 'Pasta');
+    expect(() => recordView(db, 999, recipeId)).toThrow();
+  });
+
+  it('throws on unknown recipe_id (FK)', () => {
+    const db = openInMemoryForTest();
+    const profile = createProfile(db, 'Test');
+    expect(() => recordView(db, profile.id, 999)).toThrow();
+  });
+});
+
+describe("listAllRecipesPaginated sort='viewed'", () => {
+  it('puts recently-viewed recipes first, NULLs alphabetically last', async () => {
+    const db = openInMemoryForTest();
+    const profile = createProfile(db, 'Test');
+    const recipeA = seedRecipe(db, 'Apfelkuchen');
+    const recipeB = seedRecipe(db, 'Brokkoli');
+    // Inserted in reverse-alphabetical order (Z before D) to prove the
+    // tiebreaker sorts by title, not insertion order.
+    const recipeC = seedRecipe(db, 'Zwiebelkuchen');
+    const recipeD = seedRecipe(db, 'Donauwelle');
+
+    // View order: B then A. C and D never viewed.
+    recordView(db, profile.id, recipeB);
+    await new Promise((r) => setTimeout(r, 1100));
+    recordView(db, profile.id, recipeA);
+
+    const hits = listAllRecipesPaginated(db, 'viewed', 50, 0, profile.id);
+    // Viewed: A (most recent), B — then unviewed alphabetically: D before C.
+    expect(hits.map((h) => h.id)).toEqual([recipeA, recipeB, recipeD, recipeC]);
+  });
+
+  it('falls back to alphabetical when profileId is null', () => {
+    const db = openInMemoryForTest();
+    seedRecipe(db, 'Couscous');
+    seedRecipe(db, 'Apfelkuchen');
+    seedRecipe(db, 'Brokkoli');
+
+    const hits = listAllRecipesPaginated(db, 'viewed', 50, 0, null);
+    expect(hits.map((h) => h.title)).toEqual(['Apfelkuchen', 'Brokkoli', 'Couscous']);
+  });
+
+  it('keeps existing sorts working unchanged', () => {
+    const db = openInMemoryForTest();
+    seedRecipe(db, 'Couscous');
+    seedRecipe(db, 'Apfelkuchen');
+    seedRecipe(db, 'Brokkoli');
+
+    const hits = listAllRecipesPaginated(db, 'name', 50, 0);
+    expect(hits.map((h) => h.title)).toEqual(['Apfelkuchen', 'Brokkoli', 'Couscous']);
+  });
+});
+
+// ---------------------------------------------------------------------------
+// POST /api/recipes/[id]/view — endpoint integration tests
+// ---------------------------------------------------------------------------
+
+beforeEach(() => {
+  testDb.current = openInMemoryForTest();
+});
+
+describe('POST /api/recipes/[id]/view', () => {
+  it('204 + view row written on success', async () => {
+    const db = testDb.current!;
+    const profile = createProfile(db, 'Tester');
+    const recipeId = seedRecipe(db, 'Pasta');
+
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    const res = await POST({ params: { id: String(recipeId) }, request: mkReq({ profile_id: profile.id }) } as any);
+
+    expect(res.status).toBe(204);
+    const rows = listViews(db, profile.id);
+    expect(rows.length).toBe(1);
+    expect(rows[0].recipe_id).toBe(recipeId);
+  });
+
+  it('400 on recipe id = 0', async () => {
+    await expect(
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      POST({ params: { id: '0' }, request: mkReq({ profile_id: 1 }) } as any)
+    ).rejects.toMatchObject({ status: 400 });
+  });
+
+  it('400 on non-numeric recipe id', async () => {
+    await expect(
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      POST({ params: { id: 'abc' }, request: mkReq({ profile_id: 1 }) } as any)
+    ).rejects.toMatchObject({ status: 400 });
+  });
+
+  it('400 on missing profile_id in body', async () => {
+    await expect(
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      POST({ params: { id: '1' }, request: mkReq({}) } as any)
+    ).rejects.toMatchObject({ status: 400 });
+  });
+
+  it('400 on non-positive profile_id', async () => {
+    await expect(
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      POST({ params: { id: '1' }, request: mkReq({ profile_id: 0 }) } as any)
+    ).rejects.toMatchObject({ status: 400 });
+  });
+
+  it('400 on malformed JSON body', async () => {
+    const badReq = new Request('http://test/api/recipes/1/view', {
+      method: 'POST',
+      headers: { 'content-type': 'application/json' },
+      body: 'not-json'
+    });
+    await expect(
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      POST({ params: { id: '1' }, request: badReq } as any)
+    ).rejects.toMatchObject({ status: 400 });
+  });
+
+  it('404 on unknown profile_id (FK violation)', async () => {
+    const recipeId = seedRecipe(testDb.current!, 'Pasta');
+    await expect(
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      POST({ params: { id: String(recipeId) }, request: mkReq({ profile_id: 999 }) } as any)
+    ).rejects.toMatchObject({ status: 404 });
+  });
+
+  it('404 on unknown recipe_id (FK violation)', async () => {
+    const profile = createProfile(testDb.current!, 'Tester');
+    await expect(
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      POST({ params: { id: '99999' }, request: mkReq({ profile_id: profile.id }) } as any)
+    ).rejects.toMatchObject({ status: 404 });
+  });
+});
+
+// ---------------------------------------------------------------------------
+// GET /api/recipes/all — sort=viewed + profile_id
+// ---------------------------------------------------------------------------
+
+import { GET as allGet } from '../../src/routes/api/recipes/all/+server';
+
+describe('GET /api/recipes/all sort=viewed', () => {
+  it('passes profile_id through and returns viewed-order hits', async () => {
+    const db = openInMemoryForTest();
+    testDb.current = db;
+    const profile = createProfile(db, 'Test');
+    const a = seedRecipe(db, 'Apfel');
+    const b = seedRecipe(db, 'Birne');
+    recordView(db, profile.id, b);
+    await new Promise((r) => setTimeout(r, 1100));
+    recordView(db, profile.id, a);
+
+    const url = new URL(`http://localhost/api/recipes/all?sort=viewed&profile_id=${profile.id}&limit=10`);
+    const res = await allGet({ url } as never);
+    expect(res.status).toBe(200);
+    const body = await res.json();
+    expect(body.sort).toBe('viewed');
+    expect(body.hits.map((h: { id: number }) => h.id)).toEqual([a, b]);
+  });
+
+  it('400 on invalid sort', async () => {
+    const url = new URL('http://localhost/api/recipes/all?sort=invalid');
+    await expect(allGet({ url } as never)).rejects.toMatchObject({ status: 400 });
+  });
+});

tests/integration/search-local.test.ts

@@ -69,20 +69,11 @@ describe('searchLocal', () => {
     expect(searchLocal(db, '   ')).toEqual([]);
   });
 
-  it('filters by domain when supplied', () => {
+  it('ignores source_domain — local search is domain-agnostic', () => {
     const db = openInMemoryForTest();
     insertRecipe(db, recipe({ title: 'Apfelstrudel', source_domain: 'chefkoch.de' }));
     insertRecipe(db, recipe({ title: 'Apfeltraum', source_domain: 'rezeptwelt.de' }));
-    const hits = searchLocal(db, 'apfel', 10, 0, ['chefkoch.de']);
+    const hits = searchLocal(db, 'apfel');
-    expect(hits.length).toBe(1);
-    expect(hits[0].source_domain).toBe('chefkoch.de');
-  });
-
-  it('no domain filter when array is empty', () => {
-    const db = openInMemoryForTest();
-    insertRecipe(db, recipe({ title: 'Apfelstrudel', source_domain: 'chefkoch.de' }));
-    insertRecipe(db, recipe({ title: 'Apfeltraum', source_domain: 'rezeptwelt.de' }));
-    const hits = searchLocal(db, 'apfel', 10, 0, []);
     expect(hits.length).toBe(2);
   });
 

tests/integration/shopping-repository.test.ts

@@ -0,0 +1,481 @@
+import { describe, it, expect } from 'vitest';
+import { openInMemoryForTest } from '../../src/lib/server/db';
+import { insertRecipe } from '../../src/lib/server/recipes/repository';
+import {
+  addRecipeToCart,
+  removeRecipeFromCart,
+  listShoppingList,
+  setCartServings,
+  toggleCheck,
+  clearCheckedItems,
+  clearCart
+} from '../../src/lib/server/shopping/repository';
+import type { Recipe } from '../../src/lib/types';
+
+function recipe(overrides: Partial<Recipe> = {}): Recipe {
+  return {
+    id: null,
+    title: 'Test',
+    description: null,
+    source_url: null,
+    source_domain: null,
+    image_path: null,
+    servings_default: 4,
+    servings_unit: null,
+    prep_time_min: null,
+    cook_time_min: null,
+    total_time_min: null,
+    cuisine: null,
+    category: null,
+    ingredients: [],
+    steps: [],
+    tags: [],
+    ...overrides
+  };
+}
+
+describe('addRecipeToCart', () => {
+  it('inserts recipe with default servings from recipe.servings_default', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe({ title: 'Pasta', servings_default: 4 }));
+    addRecipeToCart(db, id, null);
+    const snap = listShoppingList(db);
+    expect(snap.recipes).toHaveLength(1);
+    expect(snap.recipes[0].servings).toBe(4);
+  });
+
+  it('respects explicit servings override', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe({ servings_default: 4 }));
+    addRecipeToCart(db, id, null, 2);
+    expect(listShoppingList(db).recipes[0].servings).toBe(2);
+  });
+
+  it('is idempotent: second insert updates servings, not fails', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe({ servings_default: 4 }));
+    addRecipeToCart(db, id, null, 2);
+    addRecipeToCart(db, id, null, 6);
+    const snap = listShoppingList(db);
+    expect(snap.recipes).toHaveLength(1);
+    expect(snap.recipes[0].servings).toBe(6);
+  });
+
+  it('falls back to servings=4 when recipe has no default', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe({ servings_default: null }));
+    addRecipeToCart(db, id, null);
+    expect(listShoppingList(db).recipes[0].servings).toBe(4);
+  });
+});
+
+describe('removeRecipeFromCart', () => {
+  it('deletes only the given recipe', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(db, recipe({ title: 'A' }));
+    const b = insertRecipe(db, recipe({ title: 'B' }));
+    addRecipeToCart(db, a, null);
+    addRecipeToCart(db, b, null);
+    removeRecipeFromCart(db, a);
+    const snap = listShoppingList(db);
+    expect(snap.recipes).toHaveLength(1);
+    expect(snap.recipes[0].recipe_id).toBe(b);
+  });
+
+  it('is idempotent when recipe is not in cart', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe());
+    expect(() => removeRecipeFromCart(db, id)).not.toThrow();
+  });
+});
+
+describe('setCartServings', () => {
+  it('updates servings for a cart recipe', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe());
+    addRecipeToCart(db, id, null, 4);
+    setCartServings(db, id, 8);
+    expect(listShoppingList(db).recipes[0].servings).toBe(8);
+  });
+
+  it('rejects non-positive servings', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe());
+    addRecipeToCart(db, id, null, 4);
+    expect(() => setCartServings(db, id, 0)).toThrow();
+    expect(() => setCartServings(db, id, -3)).toThrow();
+  });
+});
+
+describe('listShoppingList aggregation', () => {
+  it('aggregates same name+unit across recipes', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(db, recipe({
+      title: 'Carbonara', servings_default: 4,
+      ingredients: [{ position: 1, quantity: 200, unit: 'g', name: 'Mehl', note: null, raw_text: '', section_heading: null }]
+    }));
+    const b = insertRecipe(db, recipe({
+      title: 'Lasagne', servings_default: 4,
+      ingredients: [{ position: 1, quantity: 200, unit: 'g', name: 'Mehl', note: null, raw_text: '', section_heading: null }]
+    }));
+    addRecipeToCart(db, a, null, 4);
+    addRecipeToCart(db, b, null, 4);
+    const rows = listShoppingList(db).rows;
+    expect(rows).toHaveLength(1);
+    expect(rows[0].name_key).toBe('mehl');
+    expect(rows[0].unit_key).toBe('weight');
+    expect(rows[0].total_quantity).toBe(400);
+    expect(rows[0].from_recipes).toContain('Carbonara');
+    expect(rows[0].from_recipes).toContain('Lasagne');
+  });
+
+  it('keeps different units as separate rows', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe({
+      servings_default: 4,
+      ingredients: [
+        { position: 1, quantity: 100, unit: 'g', name: 'Mehl', note: null, raw_text: '', section_heading: null },
+        { position: 2, quantity: 1, unit: 'Pck', name: 'Mehl', note: null, raw_text: '', section_heading: null }
+      ]
+    }));
+    addRecipeToCart(db, id, null, 4);
+    const rows = listShoppingList(db).rows;
+    expect(rows).toHaveLength(2);
+  });
+
+  it('scales quantities by servings/servings_default', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe({
+      servings_default: 4,
+      ingredients: [{ position: 1, quantity: 200, unit: 'g', name: 'Mehl', note: null, raw_text: '', section_heading: null }]
+    }));
+    addRecipeToCart(db, id, null, 2);
+    expect(listShoppingList(db).rows[0].total_quantity).toBe(100);
+  });
+
+  it('null quantity stays null after aggregation', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe({
+      ingredients: [{ position: 1, quantity: null, unit: null, name: 'Salz', note: null, raw_text: '', section_heading: null }]
+    }));
+    addRecipeToCart(db, id, null);
+    const rows = listShoppingList(db).rows;
+    expect(rows[0].total_quantity).toBeNull();
+    expect(rows[0].unit_key).toBe('');
+  });
+
+  it('counts unchecked rows in uncheckedCount', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe({
+      ingredients: [
+        { position: 1, quantity: 1, unit: 'Stk', name: 'Apfel', note: null, raw_text: '', section_heading: null },
+        { position: 2, quantity: 1, unit: 'Stk', name: 'Birne', note: null, raw_text: '', section_heading: null }
+      ]
+    }));
+    addRecipeToCart(db, id, null);
+    expect(listShoppingList(db).uncheckedCount).toBe(2);
+  });
+
+  it('does not blow up when servings_default is zero (silent NULL total_quantity)', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe({
+      servings_default: 0,
+      ingredients: [{ position: 1, quantity: 100, unit: 'g', name: 'Mehl', note: null, raw_text: '', section_heading: null }]
+    }));
+    addRecipeToCart(db, id, null, 4);
+    const rows = listShoppingList(db).rows;
+    expect(rows).toHaveLength(1);
+    expect(rows[0].total_quantity).toBeNull();
+  });
+});
+
+describe('toggleCheck', () => {
+  function setupOneRowCart() {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe({
+      ingredients: [{ position: 1, quantity: 200, unit: 'g', name: 'Mehl', note: null, raw_text: '', section_heading: null }]
+    }));
+    addRecipeToCart(db, id, null);
+    return { db, id };
+  }
+
+  it('marks a row as checked', () => {
+    const { db } = setupOneRowCart();
+    toggleCheck(db, 'mehl', 'weight', true);
+    const rows = listShoppingList(db).rows;
+    expect(rows[0].checked).toBe(1);
+  });
+
+  it('unchecks a row when passed false', () => {
+    const { db } = setupOneRowCart();
+    toggleCheck(db, 'mehl', 'weight', true);
+    toggleCheck(db, 'mehl', 'weight', false);
+    expect(listShoppingList(db).rows[0].checked).toBe(0);
+  });
+
+  it('check survives removal of one recipe when another still contributes', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(db, recipe({
+      title: 'A',
+      ingredients: [{ position: 1, quantity: 100, unit: 'g', name: 'Mehl', note: null, raw_text: '', section_heading: null }]
+    }));
+    const b = insertRecipe(db, recipe({
+      title: 'B',
+      ingredients: [{ position: 1, quantity: 200, unit: 'g', name: 'Mehl', note: null, raw_text: '', section_heading: null }]
+    }));
+    addRecipeToCart(db, a, null);
+    addRecipeToCart(db, b, null);
+    toggleCheck(db, 'mehl', 'weight', true);
+    // Rezept A weg, Mehl kommt noch aus B — check bleibt, mit neuer Menge
+    removeRecipeFromCart(db, a);
+    const rows = listShoppingList(db).rows;
+    expect(rows[0].checked).toBe(1);
+    expect(rows[0].total_quantity).toBe(200);
+  });
+});
+
+describe('clearCheckedItems', () => {
+  it('removes recipes where ALL rows are checked', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(db, recipe({
+      title: 'A',
+      ingredients: [{ position: 1, quantity: 1, unit: 'Stk', name: 'Apfel', note: null, raw_text: '', section_heading: null }]
+    }));
+    const b = insertRecipe(db, recipe({
+      title: 'B',
+      ingredients: [
+        { position: 1, quantity: 1, unit: 'Stk', name: 'Birne', note: null, raw_text: '', section_heading: null },
+        { position: 2, quantity: 1, unit: 'Stk', name: 'Salz', note: null, raw_text: '', section_heading: null }
+      ]
+    }));
+    addRecipeToCart(db, a, null);
+    addRecipeToCart(db, b, null);
+    toggleCheck(db, 'apfel', 'stk', true);
+    toggleCheck(db, 'birne', 'stk', true);
+    // Salz aus B noch nicht abgehakt → B bleibt, A fliegt
+    clearCheckedItems(db);
+    const snap = listShoppingList(db);
+    expect(snap.recipes.map((r) => r.recipe_id)).toEqual([b]);
+    // Birne-Check bleibt, weil B noch im Cart und Birne noch aktiv
+    const birneRow = snap.rows.find((r) => r.name_key === 'birne');
+    expect(birneRow?.checked).toBe(1);
+  });
+
+  it('purges orphan checks that no longer map to any cart recipe', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe({
+      ingredients: [{ position: 1, quantity: 1, unit: 'Stk', name: 'Apfel', note: null, raw_text: '', section_heading: null }]
+    }));
+    addRecipeToCart(db, id, null);
+    toggleCheck(db, 'apfel', 'stk', true);
+    clearCheckedItems(db);
+    // Apfel-Check haengt jetzt an nichts mehr → muss aus der Tabelle raus sein
+    const row = db
+      .prepare('SELECT * FROM shopping_cart_check WHERE name_key = ?')
+      .get('apfel');
+    expect(row).toBeUndefined();
+  });
+
+  it('is a no-op when nothing is checked', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe({
+      ingredients: [{ position: 1, quantity: 1, unit: 'Stk', name: 'Apfel', note: null, raw_text: '', section_heading: null }]
+    }));
+    addRecipeToCart(db, id, null);
+    clearCheckedItems(db);
+    expect(listShoppingList(db).recipes).toHaveLength(1);
+  });
+});
+
+describe('clearCart', () => {
+  it('deletes all cart recipes and all checks', () => {
+    const db = openInMemoryForTest();
+    const id = insertRecipe(db, recipe({
+      ingredients: [{ position: 1, quantity: 1, unit: 'Stk', name: 'Apfel', note: null, raw_text: '', section_heading: null }]
+    }));
+    addRecipeToCart(db, id, null);
+    toggleCheck(db, 'apfel', 'stk', true);
+    clearCart(db);
+    const snap = listShoppingList(db);
+    expect(snap.recipes).toEqual([]);
+    expect(snap.rows).toEqual([]);
+    expect(snap.uncheckedCount).toBe(0);
+    const anyCheck = db.prepare('SELECT 1 FROM shopping_cart_check').get();
+    expect(anyCheck).toBeUndefined();
+  });
+});
+
+describe('toggleCheck — stabil ueber Unit-Family', () => {
+  it('haekchen bleibt erhalten wenn Gesamtmenge von kg auf g faellt', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(
+      db,
+      recipe({
+        title: 'R1',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Kartoffeln', quantity: 500, unit: 'g', note: null, raw_text: '', section_heading: null }]
+      })
+    );
+    const b = insertRecipe(
+      db,
+      recipe({
+        title: 'R2',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Kartoffeln', quantity: 1, unit: 'kg', note: null, raw_text: '', section_heading: null }]
+      })
+    );
+    addRecipeToCart(db, a, null);
+    addRecipeToCart(db, b, null);
+
+    // Abhaken der konsolidierten 1,5-kg-Zeile via family-key
+    const before = listShoppingList(db).rows[0];
+    toggleCheck(db, before.name_key, before.unit_key, true);
+    expect(listShoppingList(db).rows[0].checked).toBe(1);
+
+    // Ein Rezept rausnehmen → nur noch 500 g, display wechselt auf g
+    removeRecipeFromCart(db, b);
+    const after = listShoppingList(db).rows[0];
+    expect(after.display_unit).toBe('g');
+    expect(after.total_quantity).toBe(500);
+    // Haekchen bleibt: unit_key ist weiterhin 'weight'
+    expect(after.checked).toBe(1);
+  });
+
+  it('clearCheckedItems respektiert family-key beim Orphan-Cleanup', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(
+      db,
+      recipe({
+        title: 'R1',
+        servings_default: 4,
+        ingredients: [
+          { position: 1, name: 'Kartoffeln', quantity: 500, unit: 'g', note: null, raw_text: '', section_heading: null },
+          { position: 2, name: 'Salz', quantity: 1, unit: 'Prise', note: null, raw_text: '', section_heading: null }
+        ]
+      })
+    );
+    addRecipeToCart(db, a, null);
+    const rows = listShoppingList(db).rows;
+    // Alle abhaken
+    for (const r of rows) toggleCheck(db, r.name_key, r.unit_key, true);
+    clearCheckedItems(db);
+    // Das Rezept sollte raus sein
+    expect(listShoppingList(db).recipes).toHaveLength(0);
+    // Check-Tabelle sollte leer sein (keine Orphans)
+    const remaining = (db.prepare('SELECT COUNT(*) AS c FROM shopping_cart_check').get() as { c: number }).c;
+    expect(remaining).toBe(0);
+  });
+});
+
+describe('listShoppingList — Konsolidierung ueber Einheiten', () => {
+  it('fasst 500 g + 1 kg Kartoffeln zu 1,5 kg zusammen', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(
+      db,
+      recipe({
+        title: 'Kartoffelsuppe',
+        servings_default: 4,
+        ingredients: [
+          { position: 1, name: 'Kartoffeln', quantity: 500, unit: 'g', note: null, raw_text: '', section_heading: null }
+        ]
+      })
+    );
+    const b = insertRecipe(
+      db,
+      recipe({
+        title: 'Kartoffelpuffer',
+        servings_default: 4,
+        ingredients: [
+          { position: 1, name: 'Kartoffeln', quantity: 1, unit: 'kg', note: null, raw_text: '', section_heading: null }
+        ]
+      })
+    );
+    addRecipeToCart(db, a, null);
+    addRecipeToCart(db, b, null);
+
+    const snap = listShoppingList(db);
+    const kartoffeln = snap.rows.filter((r) => r.display_name.toLowerCase() === 'kartoffeln');
+    expect(kartoffeln).toHaveLength(1);
+    expect(kartoffeln[0].total_quantity).toBe(1.5);
+    expect(kartoffeln[0].display_unit).toBe('kg');
+  });
+
+  it('kombiniert ml + l korrekt (400 ml + 0,5 l → 900 ml)', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(
+      db,
+      recipe({
+        title: 'R1',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Milch', quantity: 400, unit: 'ml', note: null, raw_text: '', section_heading: null }]
+      })
+    );
+    const b = insertRecipe(
+      db,
+      recipe({
+        title: 'R2',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Milch', quantity: 0.5, unit: 'l', note: null, raw_text: '', section_heading: null }]
+      })
+    );
+    addRecipeToCart(db, a, null);
+    addRecipeToCart(db, b, null);
+
+    const milch = listShoppingList(db).rows.filter((r) => r.display_name.toLowerCase() === 'milch');
+    expect(milch).toHaveLength(1);
+    expect(milch[0].total_quantity).toBe(900);
+    expect(milch[0].display_unit).toBe('ml');
+  });
+
+  it('laesst inkompatible Families getrennt (5 Stueck Eier + 500 g Eier = 2 Zeilen)', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(
+      db,
+      recipe({
+        title: 'R1',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Eier', quantity: 5, unit: 'Stück', note: null, raw_text: '', section_heading: null }]
+      })
+    );
+    const b = insertRecipe(
+      db,
+      recipe({
+        title: 'R2',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Eier', quantity: 500, unit: 'g', note: null, raw_text: '', section_heading: null }]
+      })
+    );
+    addRecipeToCart(db, a, null);
+    addRecipeToCart(db, b, null);
+
+    const eier = listShoppingList(db).rows.filter((r) => r.display_name.toLowerCase() === 'eier');
+    expect(eier).toHaveLength(2);
+  });
+
+  it('summiert gleiche Unit-Family ohne Konversion (2 Bund + 1 Bund → 3 Bund)', () => {
+    const db = openInMemoryForTest();
+    const a = insertRecipe(
+      db,
+      recipe({
+        title: 'R1',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Petersilie', quantity: 2, unit: 'Bund', note: null, raw_text: '', section_heading: null }]
+      })
+    );
+    const b = insertRecipe(
+      db,
+      recipe({
+        title: 'R2',
+        servings_default: 4,
+        ingredients: [{ position: 1, name: 'Petersilie', quantity: 1, unit: 'Bund', note: null, raw_text: '', section_heading: null }]
+      })
+    );
+    addRecipeToCart(db, a, null);
+    addRecipeToCart(db, b, null);
+
+    const petersilie = listShoppingList(db).rows.filter((r) => r.display_name.toLowerCase() === 'petersilie');
+    expect(petersilie).toHaveLength(1);
+    expect(petersilie[0].total_quantity).toBe(3);
+    expect(petersilie[0].display_unit?.toLowerCase()).toBe('bund');
+  });
+});

tests/unit/cache-strategy.test.ts

@@ -30,6 +30,12 @@ describe('resolveStrategy', () => {
     expect(resolveStrategy({ url: '/api/recipes/search/web?q=x', method: 'GET' })).toBe('network-only');
   });
 
+  it('network-only for /api/shopping-list/*', () => {
+    expect(resolveStrategy({ url: '/api/shopping-list', method: 'GET' })).toBe('network-only');
+    expect(resolveStrategy({ url: '/api/shopping-list/recipe/5', method: 'GET' })).toBe('network-only');
+    expect(resolveStrategy({ url: '/api/shopping-list/check', method: 'GET' })).toBe('network-only');
+  });
+
   it('shell bucket for build/static assets', () => {
     expect(resolveStrategy({ url: '/_app/immutable/chunks/x.js', method: 'GET' })).toBe('shell');
     expect(resolveStrategy({ url: '/icon-192.png', method: 'GET' })).toBe('shell');

tests/unit/quantity-format.test.ts

@@ -0,0 +1,28 @@
+import { describe, it, expect } from 'vitest';
+import { formatQuantity } from '../../src/lib/quantity-format';
+
+describe('formatQuantity', () => {
+  it('renders null as empty string', () => {
+    expect(formatQuantity(null)).toBe('');
+  });
+
+  it('renders whole numbers as integer', () => {
+    expect(formatQuantity(400)).toBe('400');
+  });
+
+  it('renders near-integer as integer (epsilon 0.01)', () => {
+    expect(formatQuantity(400.001)).toBe('400');
+    expect(formatQuantity(399.999)).toBe('400');
+  });
+
+  it('renders fractional with up to 2 decimals, trailing zeros trimmed', () => {
+    expect(formatQuantity(0.5)).toBe('0,5');
+    expect(formatQuantity(0.333333)).toBe('0,33');
+    expect(formatQuantity(1.1)).toBe('1,1');
+    expect(formatQuantity(1.1)).toBe('1,1');
+  });
+
+  it('handles zero', () => {
+    expect(formatQuantity(0)).toBe('0');
+  });
+});

tests/unit/scroll-restore.test.ts

@@ -0,0 +1,126 @@
+// @vitest-environment jsdom
+import { describe, it, expect, beforeEach, vi, afterEach } from 'vitest';
+
+import { recordScroll, restoreScroll } from '../../src/lib/client/scroll-restore';
+
+const STORAGE_KEY = 'kochwas:scroll';
+
+function setScrollY(y: number) {
+  Object.defineProperty(window, 'scrollY', { value: y, configurable: true });
+}
+
+function setDocHeight(h: number) {
+  Object.defineProperty(document.documentElement, 'scrollHeight', {
+    value: h,
+    configurable: true
+  });
+}
+
+function setViewportHeight(h: number) {
+  Object.defineProperty(window, 'innerHeight', { value: h, configurable: true });
+}
+
+function url(path: string): URL {
+  return new URL(path, 'https://example.test');
+}
+
+describe('scroll-restore', () => {
+  let scrollToSpy: ReturnType<typeof vi.spyOn>;
+
+  beforeEach(() => {
+    sessionStorage.clear();
+    setScrollY(0);
+    setViewportHeight(800);
+    setDocHeight(800);
+    scrollToSpy = vi
+      .spyOn(window, 'scrollTo')
+      .mockImplementation(() => undefined as unknown as void);
+  });
+
+  afterEach(() => {
+    scrollToSpy.mockRestore();
+    vi.useRealTimers();
+  });
+
+  it('records scrollY keyed by from-url pathname+search', () => {
+    setScrollY(1200);
+    recordScroll(url('/wishlist'));
+    const map = JSON.parse(sessionStorage.getItem(STORAGE_KEY) ?? '{}');
+    expect(map['/wishlist']).toBe(1200);
+  });
+
+  it('keeps separate entries per URL', () => {
+    setScrollY(500);
+    recordScroll(url('/wishlist'));
+    setScrollY(900);
+    recordScroll(url('/?q=hi'));
+    const map = JSON.parse(sessionStorage.getItem(STORAGE_KEY) ?? '{}');
+    expect(map['/wishlist']).toBe(500);
+    expect(map['/?q=hi']).toBe(900);
+  });
+
+  it('does not overwrite a stored URL when called with a different from-url', () => {
+    // This is the regression: on popstate, location.pathname is already
+    // the new URL. Recording must use nav.from.url (the page being left),
+    // not location, or we wipe the destination's saved scrollY.
+    setScrollY(500);
+    recordScroll(url('/'));
+    setScrollY(0);
+    recordScroll(url('/recipes/1'));
+    const map = JSON.parse(sessionStorage.getItem(STORAGE_KEY) ?? '{}');
+    expect(map['/']).toBe(500);
+    expect(map['/recipes/1']).toBe(0);
+  });
+
+  it('skips when from-url is missing', () => {
+    setScrollY(900);
+    recordScroll(null);
+    expect(sessionStorage.getItem(STORAGE_KEY)).toBeNull();
+  });
+
+  it('skips restore for non-popstate navigation', () => {
+    sessionStorage.setItem(STORAGE_KEY, JSON.stringify({ '/wishlist': 1000 }));
+    setDocHeight(5000);
+    restoreScroll('link', url('/wishlist'));
+    expect(scrollToSpy).not.toHaveBeenCalled();
+  });
+
+  it('skips restore when to-url is missing', () => {
+    sessionStorage.setItem(STORAGE_KEY, JSON.stringify({ '/wishlist': 1000 }));
+    restoreScroll('popstate', null);
+    expect(scrollToSpy).not.toHaveBeenCalled();
+  });
+
+  it('skips restore when no entry stored', () => {
+    setDocHeight(5000);
+    restoreScroll('popstate', url('/wishlist'));
+    expect(scrollToSpy).not.toHaveBeenCalled();
+  });
+
+  it('skips restore for trivial scrollY (noise)', () => {
+    sessionStorage.setItem(STORAGE_KEY, JSON.stringify({ '/wishlist': 10 }));
+    setDocHeight(5000);
+    restoreScroll('popstate', url('/wishlist'));
+    expect(scrollToSpy).not.toHaveBeenCalled();
+  });
+
+  it('scrolls immediately when document is already tall enough', async () => {
+    sessionStorage.setItem(STORAGE_KEY, JSON.stringify({ '/wishlist': 1000 }));
+    setDocHeight(5000);
+    restoreScroll('popstate', url('/wishlist'));
+    await new Promise((r) => requestAnimationFrame(() => r(null)));
+    expect(scrollToSpy).toHaveBeenCalledWith({ top: 1000, left: 0, behavior: 'instant' });
+  });
+
+  it('waits via rAF until document grows tall enough', async () => {
+    sessionStorage.setItem(STORAGE_KEY, JSON.stringify({ '/wishlist': 1500 }));
+    setDocHeight(900);
+    restoreScroll('popstate', url('/wishlist'));
+    await new Promise((r) => requestAnimationFrame(() => r(null)));
+    expect(scrollToSpy).not.toHaveBeenCalled();
+
+    setDocHeight(3000);
+    await new Promise((r) => requestAnimationFrame(() => r(null)));
+    expect(scrollToSpy).toHaveBeenCalledWith({ top: 1500, left: 0, behavior: 'instant' });
+  });
+});

tests/unit/search-store.test.ts

@@ -202,7 +202,7 @@ describe('SearchStore', () => {
     expect(round).toEqual(snap);
   });
 
-  it('filterParam option: gets appended to both local and web requests', async () => {
+  it('webFilterParam option: only appended to web requests, never to local', async () => {
     vi.useFakeTimers();
     const fetchImpl = mockFetch([
       { body: { hits: [] } },
@@ -211,13 +211,15 @@ describe('SearchStore', () => {
     const store = new SearchStore({
       fetchImpl,
       debounceMs: 10,
-      filterParam: () => '&domains=chefkoch.de'
+      webFilterParam: () => '&domains=chefkoch.de'
     });
     store.query = 'curry';
     store.runDebounced();
     await vi.advanceTimersByTimeAsync(15);
     await vi.waitFor(() => expect(fetchImpl).toHaveBeenCalledTimes(2));
-    expect(fetchImpl.mock.calls[0][0]).toMatch(/&domains=chefkoch\.de/);
+    expect(fetchImpl.mock.calls[0][0]).not.toMatch(/domains=/);
+    expect(fetchImpl.mock.calls[0][0]).toMatch(/\/api\/recipes\/search\?/);
+    expect(fetchImpl.mock.calls[1][0]).toMatch(/\/api\/recipes\/search\/web\?/);
     expect(fetchImpl.mock.calls[1][0]).toMatch(/&domains=chefkoch\.de/);
   });
 
@@ -243,22 +245,25 @@ describe('SearchStore', () => {
     const fetchImpl = mockFetch([
       { body: { hits: [] } },
       { body: { hits: [] } },
-      { body: { hits: [{ id: 1, title: 'filtered', description: null, image_path: null, source_domain: null, avg_stars: null, last_cooked_at: null }] } }
+      { body: { hits: [] } },
+      { body: { hits: [{ url: 'https://chefkoch.de/x', title: 'filtered', domain: 'chefkoch.de', snippet: null, thumbnail: null }] } }
     ]);
     const store = new SearchStore({
       fetchImpl,
       debounceMs: 10,
       filterDebounceMs: 5,
-      filterParam: () => filter
+      webFilterParam: () => filter
     });
     store.query = 'broth';
     store.runDebounced();
     await vi.advanceTimersByTimeAsync(15);
+    await vi.waitFor(() => expect(fetchImpl).toHaveBeenCalledTimes(2));
     filter = '&domains=chefkoch.de';
     store.reSearch();
     await vi.advanceTimersByTimeAsync(10);
-    await vi.waitFor(() => expect(store.hits).toHaveLength(1));
+    await vi.waitFor(() => expect(store.webHits).toHaveLength(1));
     const last = fetchImpl.mock.calls.at(-1)?.[0] as string;
+    expect(last).toMatch(/\/api\/recipes\/search\/web\?/);
     expect(last).toMatch(/&domains=chefkoch\.de/);
   });
 });

tests/unit/shopping-cart-store.test.ts

@@ -0,0 +1,73 @@
+// @vitest-environment jsdom
+import { describe, it, expect, vi } from 'vitest';
+import { ShoppingCartStore } from '../../src/lib/client/shopping-cart.svelte';
+
+type FetchMock = ReturnType<typeof vi.fn>;
+
+function snapshotBody(opts: {
+  recipeIds?: number[];
+  uncheckedCount?: number;
+}) {
+  return {
+    recipes: (opts.recipeIds ?? []).map((id) => ({
+      recipe_id: id, title: `R${id}`, image_path: null, servings: 4, servings_default: 4
+    })),
+    rows: [],
+    uncheckedCount: opts.uncheckedCount ?? 0
+  };
+}
+
+function makeFetch(responses: unknown[]): FetchMock {
+  const queue = [...responses];
+  return vi.fn(async () => ({
+    ok: true,
+    status: 200,
+    json: async () => queue.shift()
+  } as Response));
+}
+
+describe('ShoppingCartStore', () => {
+  it('refresh populates recipeIds and uncheckedCount', async () => {
+    const fetchImpl = makeFetch([snapshotBody({ recipeIds: [1, 2], uncheckedCount: 3 })]);
+    const store = new ShoppingCartStore(fetchImpl);
+    await store.refresh();
+    expect(store.uncheckedCount).toBe(3);
+    expect(store.isInCart(1)).toBe(true);
+    expect(store.isInCart(2)).toBe(true);
+    expect(store.isInCart(3)).toBe(false);
+    expect(store.loaded).toBe(true);
+  });
+
+  it('addRecipe posts then refreshes', async () => {
+    const fetchImpl = makeFetch([
+      {},
+      snapshotBody({ recipeIds: [42], uncheckedCount: 5 })
+    ]);
+    const store = new ShoppingCartStore(fetchImpl);
+    await store.addRecipe(42);
+    expect(fetchImpl.mock.calls[0][0]).toBe('/api/shopping-list/recipe');
+    expect(fetchImpl.mock.calls[0][1]).toMatchObject({ method: 'POST' });
+    expect(store.isInCart(42)).toBe(true);
+    expect(store.uncheckedCount).toBe(5);
+  });
+
+  it('removeRecipe deletes then refreshes', async () => {
+    const fetchImpl = makeFetch([
+      {},
+      snapshotBody({ recipeIds: [], uncheckedCount: 0 })
+    ]);
+    const store = new ShoppingCartStore(fetchImpl);
+    await store.removeRecipe(42);
+    expect(fetchImpl.mock.calls[0][0]).toBe('/api/shopping-list/recipe/42');
+    expect(fetchImpl.mock.calls[0][1]).toMatchObject({ method: 'DELETE' });
+    expect(store.uncheckedCount).toBe(0);
+  });
+
+  it('refresh keeps last known state on network error', async () => {
+    const fetchImpl = vi.fn().mockRejectedValue(new Error('offline'));
+    const store = new ShoppingCartStore(fetchImpl);
+    store.uncheckedCount = 7;
+    await store.refresh();
+    expect(store.uncheckedCount).toBe(7);
+  });
+});

tests/unit/unit-consolidation.test.ts

@@ -0,0 +1,107 @@
+import { describe, it, expect } from 'vitest';
+import { unitFamily, consolidate } from '../../src/lib/server/unit-consolidation';
+
+describe('unitFamily', () => {
+  it('maps g and kg to weight', () => {
+    expect(unitFamily('g')).toBe('weight');
+    expect(unitFamily('kg')).toBe('weight');
+  });
+  it('maps ml and l to volume', () => {
+    expect(unitFamily('ml')).toBe('volume');
+    expect(unitFamily('l')).toBe('volume');
+  });
+  it('lowercases and trims unknown units', () => {
+    expect(unitFamily(' Bund ')).toBe('bund');
+    expect(unitFamily('TL')).toBe('tl');
+    expect(unitFamily('Stück')).toBe('stück');
+  });
+  it('is case-insensitive for weight/volume', () => {
+    expect(unitFamily('Kg')).toBe('weight');
+    expect(unitFamily('ML')).toBe('volume');
+  });
+  it('returns empty string for null/undefined/empty', () => {
+    expect(unitFamily(null)).toBe('');
+    expect(unitFamily(undefined)).toBe('');
+    expect(unitFamily('')).toBe('');
+    expect(unitFamily('   ')).toBe('');
+  });
+});
+
+describe('consolidate', () => {
+  it('kombiniert 500 g + 1 kg zu 1,5 kg', () => {
+    const out = consolidate([
+      { quantity: 500, unit: 'g' },
+      { quantity: 1, unit: 'kg' }
+    ]);
+    expect(out).toEqual({ quantity: 1.5, unit: 'kg' });
+  });
+
+  it('bleibt bei g wenn Summe < 1 kg', () => {
+    const out = consolidate([
+      { quantity: 200, unit: 'g' },
+      { quantity: 300, unit: 'g' }
+    ]);
+    expect(out).toEqual({ quantity: 500, unit: 'g' });
+  });
+
+  it('promoted bei exakt 1000 g (Boundary)', () => {
+    const out = consolidate([
+      { quantity: 1000, unit: 'g' }
+    ]);
+    expect(out).toEqual({ quantity: 1, unit: 'kg' });
+  });
+
+  it('kombiniert ml + l analog (400 ml + 0,5 l → 900 ml)', () => {
+    const out = consolidate([
+      { quantity: 400, unit: 'ml' },
+      { quantity: 0.5, unit: 'l' }
+    ]);
+    expect(out).toEqual({ quantity: 900, unit: 'ml' });
+  });
+
+  it('promoted zu l ab 1000 ml (0,5 l + 0,8 l → 1,3 l)', () => {
+    const out = consolidate([
+      { quantity: 0.5, unit: 'l' },
+      { quantity: 0.8, unit: 'l' }
+    ]);
+    expect(out).toEqual({ quantity: 1.3, unit: 'l' });
+  });
+
+  it('summiert gleiche nicht-family-units (2 Bund + 1 Bund → 3 Bund)', () => {
+    const out = consolidate([
+      { quantity: 2, unit: 'Bund' },
+      { quantity: 1, unit: 'Bund' }
+    ]);
+    expect(out).toEqual({ quantity: 3, unit: 'Bund' });
+  });
+
+  it('behandelt quantity=null als 0', () => {
+    const out = consolidate([
+      { quantity: null, unit: 'TL' },
+      { quantity: 1, unit: 'TL' }
+    ]);
+    expect(out).toEqual({ quantity: 1, unit: 'TL' });
+  });
+
+  it('gibt null zurueck wenn alle quantities null sind', () => {
+    const out = consolidate([
+      { quantity: null, unit: 'Prise' },
+      { quantity: null, unit: 'Prise' }
+    ]);
+    expect(out).toEqual({ quantity: null, unit: 'Prise' });
+  });
+
+  it('rundet Float-Artefakte auf 2 Dezimalen (0,1 + 0,2 kg → 0,3 kg)', () => {
+    const out = consolidate([
+      { quantity: 0.1, unit: 'kg' },
+      { quantity: 0.2, unit: 'kg' }
+    ]);
+    // 0.1 + 0.2 in kg = 0.3 kg, in g = 300 → promoted? 300 < 1000 → 300 g
+    expect(out).toEqual({ quantity: 300, unit: 'g' });
+  });
+
+  it('nimmt unit vom ersten Eintrag bei unbekannter family', () => {
+    const out = consolidate([{ quantity: 5, unit: 'Stück' }]);
+    expect(out).toEqual({ quantity: 5, unit: 'Stück' });
+  });
+});