feat(wishlist): per-user Wünsche + Header-Badge mit Gesamtzahl

Schema-Änderung (Migration 005):
- Tabelle wishlist umgestellt auf PK (recipe_id, profile_id)
- wishlist_like-Tabelle zusammengelegt — Liken WAR schon "will ich auch",
  also werden alle bestehenden Likes Memberships auf der neuen Tabelle.
- Alt-Einträge mit added_by_profile_id werden migriert, anonyme gehen
  verloren (war inkonsistent, jetzt erzwingen wir profile_id NOT NULL).

Repository:
- listWishlist aggregiert pro Rezept: wanted_by_count, wanted_by_names
  (kommagetrennt), on_my_wishlist für das aktive Profil
- listWishlistProfileIds(recipeId) für den Recipe-Page-Loader
- countWishlistRecipes für das Header-Badge (DISTINCT recipe_id)
- addToWishlist/removeFromWishlist/isOnMyWishlist alle mit profile_id
  als Pflicht

API:
- POST /api/wishlist: profile_id jetzt Pflicht (nullable raus)
- DELETE /api/wishlist/[recipe_id]?profile_id=X (nur eigenes Entry)
- /api/wishlist/[recipe_id]/like komplett entfernt (Konzept obsolet)
- Neu: GET /api/wishlist/count → { count: <distinct recipes> }

UI:
- Header-Heart bekommt rotes Badge mit Zahl der Wunschliste-Rezepte.
  wishlistStore in $lib/client/wishlist.svelte.ts hält den Count reaktiv;
  Refresh auf Mount, nach Add/Remove, beim Öffnen der Wunschliste.
- Recipe-Detail: Loader liefert wishlist_profile_ids; onMyWishlist ist
  ein $derived. Toggle fragt aktives Profil (alertAction sonst), mutiert
  die lokale Liste + ruft wishlistStore.refresh.
- Wunschliste-Seite: Heart toggelt eigenen Wunsch, Count zeigt Gesamt-
  wünsche, kommagetrennte Namen zeigen "wer will". Trash-Button
  entfernt — Heart-off reicht jetzt.

Tests (99 → 99, 8 neu geschrieben):
- Per-User-Add/Remove, aggregierte Counts, on_my_wishlist, Cascades bei
  Recipe/Profile-Delete, countWishlistRecipes = DISTINCT.

src/routes/+layout.svelte

@@ -4,6 +4,7 @@
   import { goto, afterNavigate } from '$app/navigation';
   import { Heart, Settings, CookingPot, Globe, Utensils } from 'lucide-svelte';
   import { profileStore } from '$lib/client/profile.svelte';
+  import { wishlistStore } from '$lib/client/wishlist.svelte';
   import ProfileSwitcher from '$lib/components/ProfileSwitcher.svelte';
   import ConfirmDialog from '$lib/components/ConfirmDialog.svelte';
   import SearchLoader from '$lib/components/SearchLoader.svelte';
@@ -105,6 +106,7 @@
 
   onMount(() => {
     profileStore.load();
+    void wishlistStore.refresh();
     document.addEventListener('click', handleClickOutside);
     document.addEventListener('keydown', handleKey);
     return () => {
@@ -211,8 +213,17 @@
       </div>
     {/if}
     <div class="bar-right">
-      <a href="/wishlist" class="nav-link" aria-label="Wunschliste">
+      <a
+        href="/wishlist"
+        class="nav-link wishlist-link"
+        aria-label={wishlistStore.count > 0
+          ? `Wunschliste (${wishlistStore.count})`
+          : 'Wunschliste'}
+      >
         <Heart size={20} strokeWidth={2} />
+        {#if wishlistStore.count > 0}
+          <span class="badge">{wishlistStore.count}</span>
+        {/if}
       </a>
       <a href="/admin" class="nav-link" aria-label="Einstellungen">
         <Settings size={20} strokeWidth={2} />
@@ -399,10 +410,28 @@
     border-radius: 999px;
     text-decoration: none;
     font-size: 1.15rem;
+    position: relative;
   }
   .nav-link:hover {
     background: #f4f8f5;
   }
+  .badge {
+    position: absolute;
+    top: -2px;
+    right: -2px;
+    min-width: 18px;
+    height: 18px;
+    padding: 0 5px;
+    border-radius: 999px;
+    background: #c53030;
+    color: white;
+    font-size: 0.7rem;
+    font-weight: 700;
+    line-height: 18px;
+    text-align: center;
+    box-shadow: 0 0 0 2px white;
+    pointer-events: none;
+  }
   main {
     padding: 0 1rem 4rem;
     max-width: 760px;

src/routes/api/wishlist/+server.ts

@@ -10,7 +10,7 @@ import {
 
 const AddSchema = z.object({
   recipe_id: z.number().int().positive(),
-  profile_id: z.number().int().positive().nullable().optional()
+  profile_id: z.number().int().positive()
 });
 
 const VALID_SORTS: readonly SortKey[] = ['popular', 'newest', 'oldest'] as const;
@@ -34,7 +34,7 @@ export const GET: RequestHandler = async ({ url }) => {
 export const POST: RequestHandler = async ({ request }) => {
   const body = await request.json().catch(() => null);
   const parsed = AddSchema.safeParse(body);
-  if (!parsed.success) error(400, { message: 'Invalid body' });
-  addToWishlist(getDb(), parsed.data.recipe_id, parsed.data.profile_id ?? null);
+  if (!parsed.success) error(400, { message: 'recipe_id and profile_id required' });
+  addToWishlist(getDb(), parsed.data.recipe_id, parsed.data.profile_id);
   return json({ ok: true }, { status: 201 });
 };

src/routes/api/wishlist/[recipe_id]/+server.ts

@@ -3,14 +3,15 @@ import { json, error } from '@sveltejs/kit';
 import { getDb } from '$lib/server/db';
 import { removeFromWishlist } from '$lib/server/wishlist/repository';
 
-function parseId(raw: string): number {
-  const id = Number(raw);
-  if (!Number.isInteger(id) || id <= 0) error(400, { message: 'Invalid recipe_id' });
-  return id;
+function parsePositiveInt(raw: string | null, field: string): number {
+  const n = raw === null ? NaN : Number(raw);
+  if (!Number.isInteger(n) || n <= 0) error(400, { message: `Invalid ${field}` });
+  return n;
 }
 
-export const DELETE: RequestHandler = async ({ params }) => {
-  const id = parseId(params.recipe_id!);
-  removeFromWishlist(getDb(), id);
+export const DELETE: RequestHandler = async ({ params, url }) => {
+  const id = parsePositiveInt(params.recipe_id!, 'recipe_id');
+  const profileId = parsePositiveInt(url.searchParams.get('profile_id'), 'profile_id');
+  removeFromWishlist(getDb(), id, profileId);
   return json({ ok: true });
 };

src/routes/api/wishlist/[recipe_id]/like/+server.ts

@@ -1,31 +0,0 @@
-import type { RequestHandler } from './$types';
-import { json, error } from '@sveltejs/kit';
-import { z } from 'zod';
-import { getDb } from '$lib/server/db';
-import { likeWish, unlikeWish } from '$lib/server/wishlist/repository';
-
-const Schema = z.object({ profile_id: z.number().int().positive() });
-
-function parseId(raw: string): number {
-  const id = Number(raw);
-  if (!Number.isInteger(id) || id <= 0) error(400, { message: 'Invalid recipe_id' });
-  return id;
-}
-
-export const PUT: RequestHandler = async ({ params, request }) => {
-  const id = parseId(params.recipe_id!);
-  const body = await request.json().catch(() => null);
-  const parsed = Schema.safeParse(body);
-  if (!parsed.success) error(400, { message: 'Invalid body' });
-  likeWish(getDb(), id, parsed.data.profile_id);
-  return json({ ok: true });
-};
-
-export const DELETE: RequestHandler = async ({ params, request }) => {
-  const id = parseId(params.recipe_id!);
-  const body = await request.json().catch(() => null);
-  const parsed = Schema.safeParse(body);
-  if (!parsed.success) error(400, { message: 'Invalid body' });
-  unlikeWish(getDb(), id, parsed.data.profile_id);
-  return json({ ok: true });
-};

src/routes/api/wishlist/count/+server.ts

@@ -0,0 +1,8 @@
+import type { RequestHandler } from './$types';
+import { json } from '@sveltejs/kit';
+import { getDb } from '$lib/server/db';
+import { countWishlistRecipes } from '$lib/server/wishlist/repository';
+
+export const GET: RequestHandler = async () => {
+  return json({ count: countWishlistRecipes(getDb()) });
+};

src/routes/recipes/[id]/+page.server.ts

@@ -8,6 +8,7 @@ import {
   listFavoriteProfiles,
   listRatings
 } from '$lib/server/recipes/actions';
+import { listWishlistProfileIds } from '$lib/server/wishlist/repository';
 
 export const load: PageServerLoad = async ({ params }) => {
   const id = Number(params.id);
@@ -19,7 +20,16 @@ export const load: PageServerLoad = async ({ params }) => {
   const comments = listComments(db, id);
   const cooking_log = listCookingLog(db, id);
   const favorite_profile_ids = listFavoriteProfiles(db, id);
+  const wishlist_profile_ids = listWishlistProfileIds(db, id);
   const avg_stars =
     ratings.length === 0 ? null : ratings.reduce((s, r) => s + r.stars, 0) / ratings.length;
-  return { recipe, ratings, comments, cooking_log, favorite_profile_ids, avg_stars };
+  return {
+    recipe,
+    ratings,
+    comments,
+    cooking_log,
+    favorite_profile_ids,
+    wishlist_profile_ids,
+    avg_stars
+  };
 };

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

@@ -14,6 +14,7 @@
   import RecipeView from '$lib/components/RecipeView.svelte';
   import StarRating from '$lib/components/StarRating.svelte';
   import { profileStore } from '$lib/client/profile.svelte';
+  import { wishlistStore } from '$lib/client/wishlist.svelte';
   import { confirmAction, alertAction } from '$lib/client/confirm.svelte';
   import type { CommentRow } from '$lib/server/recipes/actions';
 
@@ -24,7 +25,7 @@
   let comments = $state<CommentRow[]>([]);
   let cookingLog = $state<typeof data.cooking_log>([]);
   let favoriteProfileIds = $state<number[]>([]);
-  let onWishlist = $state(false);
+  let wishlistProfileIds = $state<number[]>([]);
   let newComment = $state('');
 
   let title = $state('');
@@ -37,6 +38,7 @@
     comments = [...data.comments];
     cookingLog = [...data.cooking_log];
     favoriteProfileIds = [...data.favorite_profile_ids];
+    wishlistProfileIds = [...data.wishlist_profile_ids];
     title = data.recipe.title;
   });
 
@@ -50,6 +52,10 @@
     profileStore.active ? favoriteProfileIds.includes(profileStore.active.id) : false
   );
 
+  const onMyWishlist = $derived(
+    profileStore.active ? wishlistProfileIds.includes(profileStore.active.id) : false
+  );
+
   async function setRating(stars: number) {
     if (!profileStore.active) {
       await alertAction({
@@ -195,27 +201,28 @@
   }
 
   async function toggleWishlist() {
-    if (onWishlist) {
-      await fetch(`/api/wishlist/${data.recipe.id}`, { method: 'DELETE' });
-      onWishlist = false;
+    if (!profileStore.active) {
+      await alertAction({
+        title: 'Kein Profil gewählt',
+        message: 'Tippe oben rechts auf „Profil wählen", dann klappt die Aktion.'
+      });
+      return;
+    }
+    const profileId = profileStore.active.id;
+    if (onMyWishlist) {
+      await fetch(`/api/wishlist/${data.recipe.id}?profile_id=${profileId}`, {
+        method: 'DELETE'
+      });
+      wishlistProfileIds = wishlistProfileIds.filter((id) => id !== profileId);
     } else {
       await fetch('/api/wishlist', {
         method: 'POST',
         headers: { 'content-type': 'application/json' },
-        body: JSON.stringify({
-          recipe_id: data.recipe.id,
-          profile_id: profileStore.active?.id ?? null
-        })
+        body: JSON.stringify({ recipe_id: data.recipe.id, profile_id: profileId })
       });
-      onWishlist = true;
+      wishlistProfileIds = [...wishlistProfileIds, profileId];
     }
-  }
-
-  async function refreshWishlistState() {
-    const res = await fetch('/api/wishlist?sort=newest');
-    if (!res.ok) return;
-    const body = await res.json();
-    onWishlist = body.entries.some((e: { recipe_id: number }) => e.recipe_id === data.recipe.id);
+    void wishlistStore.refresh();
   }
 
   // Wake-Lock
@@ -232,7 +239,6 @@
 
   onMount(() => {
     void requestWakeLock();
-    void refreshWishlistState();
     const onVisibility = () => {
       if (document.visibilityState === 'visible' && !wakeLock) void requestWakeLock();
     };
@@ -286,8 +292,8 @@
           <Heart size={18} strokeWidth={2} fill={isFav ? 'currentColor' : 'none'} />
           <span>Favorit</span>
         </button>
-        <button class="btn" class:wish={onWishlist} onclick={toggleWishlist}>
-          {#if onWishlist}
+        <button class="btn" class:wish={onMyWishlist} onclick={toggleWishlist}>
+          {#if onMyWishlist}
             <Check size={18} strokeWidth={2.5} />
             <span>Auf Wunschliste</span>
           {:else}

src/routes/wishlist/+page.svelte

@@ -1,8 +1,9 @@
 <script lang="ts">
   import { onMount } from 'svelte';
-  import { Heart, Trash2, CookingPot } from 'lucide-svelte';
+  import { Heart, CookingPot } from 'lucide-svelte';
   import { profileStore } from '$lib/client/profile.svelte';
-  import { confirmAction, alertAction } from '$lib/client/confirm.svelte';
+  import { wishlistStore } from '$lib/client/wishlist.svelte';
+  import { alertAction } from '$lib/client/confirm.svelte';
   import type { WishlistEntry, SortKey } from '$lib/server/wishlist/repository';
 
   let entries = $state<WishlistEntry[]>([]);
@@ -26,36 +27,34 @@
     void load();
   });
 
-  async function toggleLike(entry: WishlistEntry) {
+  async function toggleMine(entry: WishlistEntry) {
     if (!profileStore.active) {
       await alertAction({
         title: 'Kein Profil gewählt',
-        message: 'Tippe oben rechts auf „Profil wählen", um zu liken.'
+        message: 'Tippe oben rechts auf „Profil wählen", um mitzuwünschen.'
       });
       return;
     }
-    const method = entry.liked_by_me ? 'DELETE' : 'PUT';
-    await fetch(`/api/wishlist/${entry.recipe_id}/like`, {
-      method,
-      headers: { 'content-type': 'application/json' },
-      body: JSON.stringify({ profile_id: profileStore.active.id })
-    });
+    const profileId = profileStore.active.id;
+    if (entry.on_my_wishlist) {
+      await fetch(`/api/wishlist/${entry.recipe_id}?profile_id=${profileId}`, {
+        method: 'DELETE'
+      });
+    } else {
+      await fetch('/api/wishlist', {
+        method: 'POST',
+        headers: { 'content-type': 'application/json' },
+        body: JSON.stringify({ recipe_id: entry.recipe_id, profile_id: profileId })
+      });
+    }
     await load();
+    void wishlistStore.refresh();
   }
 
-  async function remove(entry: WishlistEntry) {
-    const ok = await confirmAction({
-      title: 'Von der Wunschliste entfernen?',
-      message: `„${entry.title}" wird aus der Wunschliste entfernt. Das Rezept selbst bleibt gespeichert.`,
-      confirmLabel: 'Entfernen',
-      destructive: true
-    });
-    if (!ok) return;
-    await fetch(`/api/wishlist/${entry.recipe_id}`, { method: 'DELETE' });
-    await load();
-  }
-
-  onMount(load);
+  onMount(() => {
+    void load();
+    void wishlistStore.refresh();
+  });
 
   function resolveImage(p: string | null): string | null {
     if (!p) return null;
@@ -100,11 +99,11 @@
           <div class="text">
             <div class="title">{e.title}</div>
             <div class="meta">
-              {#if e.added_by_name}
-                <span>von {e.added_by_name}</span>
+              {#if e.wanted_by_names}
+                <span class="wanted-by">{e.wanted_by_names}</span>
               {/if}
               {#if e.source_domain}
-                <span>· {e.source_domain}</span>
+                <span class="src">· {e.source_domain}</span>
               {/if}
               {#if e.avg_stars !== null}
                 <span>· ★ {e.avg_stars.toFixed(1)}</span>
@@ -115,18 +114,15 @@
         <div class="actions">
           <button
             class="like"
-            class:active={e.liked_by_me}
-            aria-label={e.liked_by_me ? 'Unlike' : 'Like'}
-            onclick={() => toggleLike(e)}
+            class:active={e.on_my_wishlist}
+            aria-label={e.on_my_wishlist ? 'Ich will das nicht mehr' : 'Ich will das auch'}
+            onclick={() => toggleMine(e)}
           >
-            <Heart size={18} strokeWidth={2} fill={e.liked_by_me ? 'currentColor' : 'none'} />
-            {#if e.like_count > 0}
-              <span class="count">{e.like_count}</span>
+            <Heart size={18} strokeWidth={2} fill={e.on_my_wishlist ? 'currentColor' : 'none'} />
+            {#if e.wanted_by_count > 0}
+              <span class="count">{e.wanted_by_count}</span>
             {/if}
           </button>
-          <button class="del" aria-label="Entfernen" onclick={() => remove(e)}>
-            <Trash2 size={18} strokeWidth={2} />
-          </button>
         </div>
       </li>
     {/each}
@@ -175,7 +171,8 @@
     padding: 3rem 1rem;
   }
   .big {
-    font-size: 3rem;
+    color: #8fb097;
+    display: inline-flex;
     margin: 0 0 0.5rem;
   }
   .hint {
@@ -215,7 +212,7 @@
     background: #eef3ef;
     display: grid;
     place-items: center;
-    font-size: 2rem;
+    color: #8fb097;
     flex-shrink: 0;
   }
   .text {
@@ -239,15 +236,16 @@
     font-size: 0.82rem;
     flex-wrap: wrap;
   }
+  .wanted-by {
+    color: #2b6a3d;
+    font-weight: 500;
+  }
   .actions {
     display: flex;
-    flex-direction: column;
-    gap: 0.4rem;
+    align-items: center;
     padding: 0.5rem 0.6rem 0.5rem 0;
-    justify-content: center;
   }
-  .like,
-  .del {
+  .like {
     min-width: 48px;
     min-height: 44px;
     border-radius: 10px;
@@ -259,6 +257,7 @@
     justify-content: center;
     gap: 0.3rem;
     font-size: 1.05rem;
+    color: #444;
   }
   .like.active {
     color: #c53030;