refactor(client): requireProfile() + asyncFetch wrapper

requireProfile():
- src/lib/client/profile.svelte.ts: neuer Helper, returnt das aktive
  Profile oder null nach standardisiertem alertAction
- 5x in recipes/[id]/+page.svelte: setRating, toggleFavorite, logCooked,
  addComment, toggleWishlist verlieren je 7 Zeilen Guard-Klausel
- profile-Variable im Closure macht den ! am profileStore.active obsolet

asyncFetch():
- src/lib/client/api-fetch-wrapper.ts: returnt Response auf 2xx, null
  nach alertAction auf Fehler
- 4 Call-Sites umgestellt: saveRecipe + saveTitle (recipes/[id]),
  saveEdit (admin/domains), rename (admin/profiles)
- admin/domains add() bewusst nicht migriert — inline-Error-UX statt Modal

Findings aus REVIEW-2026-04-18.md (Quick-Win 5) und redundancy.md

src/lib/client/api-fetch-wrapper.ts

@@ -0,0 +1,25 @@
+import { alertAction } from '$lib/client/confirm.svelte';
+
+/**
+ * Fetch wrapper for actions where a non-OK response should pop a modal
+ * via alertAction(). Returns the Response on 2xx, or null after showing
+ * the alert. Caller should `if (!res) return;` after the call.
+ *
+ * Use this for *interactive* actions (rename, delete, save). For form
+ * submissions where the error should appear inline next to the field
+ * (e.g. admin/domains add()), keep manual handling.
+ */
+export async function asyncFetch(
+  url: string,
+  init: RequestInit | undefined,
+  errorTitle: string
+): Promise<Response | null> {
+  const res = await fetch(url, init);
+  if (res.ok) return res;
+  const body = (await res.json().catch(() => null)) as { message?: string } | null;
+  await alertAction({
+    title: errorTitle,
+    message: body?.message ?? `HTTP ${res.status}`
+  });
+  return null;
+}

src/lib/client/profile.svelte.ts

@@ -1,4 +1,5 @@
 import type { Profile } from '$lib/types';
+import { alertAction } from '$lib/client/confirm.svelte';
 
 const STORAGE_KEY = 'kochwas.activeProfileId';
 
@@ -60,3 +61,17 @@ class ProfileStore {
 }
 
 export const profileStore = new ProfileStore();
+
+/**
+ * Returns the active profile, or null after showing the standard
+ * "kein Profil gewählt" dialog. Use as the first line of any per-profile
+ * action so we don't repeat the guard at every call-site.
+ */
+export async function requireProfile(): Promise<Profile | null> {
+  if (profileStore.active) return profileStore.active;
+  await alertAction({
+    title: 'Kein Profil gewählt',
+    message: 'Tippe oben rechts auf „Profil wählen", dann klappt die Aktion.'
+  });
+  return null;
+}

src/routes/admin/domains/+page.svelte

@@ -2,7 +2,8 @@
   import { onMount } from 'svelte';
   import { Pencil, Check, X, Globe } from 'lucide-svelte';
   import type { AllowedDomain } from '$lib/types';
-  import { confirmAction, alertAction } from '$lib/client/confirm.svelte';
+  import { confirmAction } from '$lib/client/confirm.svelte';
+  import { asyncFetch } from '$lib/client/api-fetch-wrapper';
   import { requireOnline } from '$lib/client/require-online';
 
   let domains = $state<AllowedDomain[]>([]);
@@ -64,22 +65,19 @@
     if (!requireOnline('Das Speichern')) return;
     saving = true;
     try {
-      const res = await fetch(`/api/domains/${d.id}`, {
+      const res = await asyncFetch(
-        method: 'PATCH',
+        `/api/domains/${d.id}`,
-        headers: { 'content-type': 'application/json' },
+        {
-        body: JSON.stringify({
+          method: 'PATCH',
-          domain: editDomain.trim(),
+          headers: { 'content-type': 'application/json' },
-          display_name: editLabel.trim() || null
+          body: JSON.stringify({
-        })
+            domain: editDomain.trim(),
-      });
+            display_name: editLabel.trim() || null
-      if (!res.ok) {
+          })
-        const body = await res.json().catch(() => ({}));
+        },
-        await alertAction({
+        'Speichern fehlgeschlagen'
-          title: 'Speichern fehlgeschlagen',
+      );
-          message: body.message ?? `HTTP ${res.status}`
+      if (!res) return;
-        });
-        return;
-      }
       cancelEdit();
       await load();
     } finally {

src/routes/admin/profiles/+page.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
   import { profileStore } from '$lib/client/profile.svelte';
-  import { confirmAction, alertAction } from '$lib/client/confirm.svelte';
+  import { confirmAction } from '$lib/client/confirm.svelte';
+  import { asyncFetch } from '$lib/client/api-fetch-wrapper';
   import { requireOnline } from '$lib/client/require-online';
 
   let newName = $state('');
@@ -27,19 +28,16 @@
     const next = prompt('Neuer Name:', currentName);
     if (!next || next === currentName) return;
     if (!requireOnline('Das Umbenennen')) return;
-    const res = await fetch(`/api/profiles/${id}`, {
+    const res = await asyncFetch(
-      method: 'PATCH',
+      `/api/profiles/${id}`,
-      headers: { 'content-type': 'application/json' },
+      {
-      body: JSON.stringify({ name: next.trim() })
+        method: 'PATCH',
-    });
+        headers: { 'content-type': 'application/json' },
-    if (!res.ok) {
+        body: JSON.stringify({ name: next.trim() })
-      const body = await res.json().catch(() => ({}));
+      },
-      await alertAction({
+      'Umbenennen fehlgeschlagen'
-        title: 'Umbenennen fehlgeschlagen',
+    );
-        message: body.message ?? `HTTP ${res.status}`
+    if (!res) return;
-      });
-      return;
-    }
     await profileStore.load();
   }
 

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

@@ -17,9 +17,10 @@
   import RecipeView from '$lib/components/RecipeView.svelte';
   import RecipeEditor from '$lib/components/RecipeEditor.svelte';
   import StarRating from '$lib/components/StarRating.svelte';
-  import { profileStore } from '$lib/client/profile.svelte';
+  import { profileStore, requireProfile } from '$lib/client/profile.svelte';
   import { wishlistStore } from '$lib/client/wishlist.svelte';
-  import { confirmAction, alertAction } from '$lib/client/confirm.svelte';
+  import { confirmAction } from '$lib/client/confirm.svelte';
+  import { asyncFetch } from '$lib/client/api-fetch-wrapper';
   import { requireOnline } from '$lib/client/require-online';
   import type { CommentRow } from '$lib/server/recipes/actions';
 
@@ -73,19 +74,16 @@
     if (!requireOnline('Das Speichern')) return;
     saving = true;
     try {
-      const res = await fetch(`/api/recipes/${data.recipe.id}`, {
+      const res = await asyncFetch(
-        method: 'PATCH',
+        `/api/recipes/${data.recipe.id}`,
-        headers: { 'content-type': 'application/json' },
+        {
-        body: JSON.stringify(patch)
+          method: 'PATCH',
-      });
+          headers: { 'content-type': 'application/json' },
-      if (!res.ok) {
+          body: JSON.stringify(patch)
-        const body = await res.json().catch(() => ({}));
+        },
-        await alertAction({
+        'Speichern fehlgeschlagen'
-          title: 'Speichern fehlgeschlagen',
+      );
-          message: body.message ?? `HTTP ${res.status}`
+      if (!res) return;
-        });
-        return;
-      }
       const body = await res.json();
       if (body.recipe) {
         recipeState = body.recipe;
@@ -122,60 +120,44 @@
   );
 
   async function setRating(stars: number) {
-    if (!profileStore.active) {
+    const profile = await requireProfile();
-      await alertAction({
+    if (!profile) return;
-        title: 'Kein Profil gewählt',
-        message: 'Tippe oben rechts auf „Profil wählen", dann klappt die Aktion.'
-      });
-      return;
-    }
     if (!requireOnline('Das Rating')) return;
     await fetch(`/api/recipes/${data.recipe.id}/rating`, {
       method: 'PUT',
       headers: { 'content-type': 'application/json' },
-      body: JSON.stringify({ profile_id: profileStore.active.id, stars })
+      body: JSON.stringify({ profile_id: profile.id, stars })
     });
-    const existing = ratings.find((r) => r.profile_id === profileStore.active!.id);
+    const existing = ratings.find((r) => r.profile_id === profile.id);
     if (existing) existing.stars = stars;
-    else ratings = [...ratings, { profile_id: profileStore.active.id, stars }];
+    else ratings = [...ratings, { profile_id: profile.id, stars }];
   }
 
   async function toggleFavorite() {
-    if (!profileStore.active) {
+    const profile = await requireProfile();
-      await alertAction({
+    if (!profile) return;
-        title: 'Kein Profil gewählt',
-        message: 'Tippe oben rechts auf „Profil wählen", dann klappt die Aktion.'
-      });
-      return;
-    }
     if (!requireOnline('Das Favorit-Setzen')) return;
-    const profileId = profileStore.active.id;
     const wasFav = isFav;
     const method = wasFav ? 'DELETE' : 'PUT';
     await fetch(`/api/recipes/${data.recipe.id}/favorite`, {
       method,
       headers: { 'content-type': 'application/json' },
-      body: JSON.stringify({ profile_id: profileId })
+      body: JSON.stringify({ profile_id: profile.id })
     });
     favoriteProfileIds = wasFav
-      ? favoriteProfileIds.filter((id) => id !== profileId)
+      ? favoriteProfileIds.filter((id) => id !== profile.id)
-      : [...favoriteProfileIds, profileId];
+      : [...favoriteProfileIds, profile.id];
     if (!wasFav) void firePulse('fav');
   }
 
   async function logCooked() {
-    if (!profileStore.active) {
+    const profile = await requireProfile();
-      await alertAction({
+    if (!profile) return;
-        title: 'Kein Profil gewählt',
-        message: 'Tippe oben rechts auf „Profil wählen", dann klappt die Aktion.'
-      });
-      return;
-    }
     if (!requireOnline('Der Kochjournal-Eintrag')) return;
     const res = await fetch(`/api/recipes/${data.recipe.id}/cooked`, {
       method: 'POST',
       headers: { 'content-type': 'application/json' },
-      body: JSON.stringify({ profile_id: profileStore.active.id })
+      body: JSON.stringify({ profile_id: profile.id })
     });
     const entry = await res.json();
     cookingLog = [entry, ...cookingLog];
@@ -186,20 +168,15 @@
   }
 
   async function addComment() {
-    if (!profileStore.active) {
+    const profile = await requireProfile();
-      await alertAction({
+    if (!profile) return;
-        title: 'Kein Profil gewählt',
-        message: 'Tippe oben rechts auf „Profil wählen", dann klappt die Aktion.'
-      });
-      return;
-    }
     if (!requireOnline('Das Speichern des Kommentars')) return;
     const text = newComment.trim();
     if (!text) return;
     const res = await fetch(`/api/recipes/${data.recipe.id}/comments`, {
       method: 'POST',
       headers: { 'content-type': 'application/json' },
-      body: JSON.stringify({ profile_id: profileStore.active.id, text })
+      body: JSON.stringify({ profile_id: profile.id, text })
     });
     if (res.ok) {
       const body = await res.json();
@@ -207,10 +184,10 @@
         ...comments,
         {
           id: body.id,
-          profile_id: profileStore.active.id,
+          profile_id: profile.id,
           text,
           created_at: new Date().toISOString(),
-          author: profileStore.active.name
+          author: profile.name
         }
       ];
       newComment = '';
@@ -250,19 +227,16 @@
       return;
     }
     if (!requireOnline('Das Umbenennen')) return;
-    const res = await fetch(`/api/recipes/${data.recipe.id}`, {
+    const res = await asyncFetch(
-      method: 'PATCH',
+      `/api/recipes/${data.recipe.id}`,
-      headers: { 'content-type': 'application/json' },
+      {
-      body: JSON.stringify({ title: next })
+        method: 'PATCH',
-    });
+        headers: { 'content-type': 'application/json' },
-    if (!res.ok) {
+        body: JSON.stringify({ title: next })
-      const body = await res.json().catch(() => ({}));
+      },
-      await alertAction({
+      'Umbenennen fehlgeschlagen'
-        title: 'Umbenennen fehlgeschlagen',
+    );
-        message: body.message ?? `HTTP ${res.status}`
+    if (!res) return;
-      });
-      return;
-    }
     title = next;
     editingTitle = false;
   }
@@ -278,28 +252,22 @@
   }
 
   async function toggleWishlist() {
-    if (!profileStore.active) {
+    const profile = await requireProfile();
-      await alertAction({
+    if (!profile) return;
-        title: 'Kein Profil gewählt',
-        message: 'Tippe oben rechts auf „Profil wählen", dann klappt die Aktion.'
-      });
-      return;
-    }
     if (!requireOnline('Das Wunschlisten-Setzen')) return;
-    const profileId = profileStore.active.id;
     const wasOn = onMyWishlist;
     if (wasOn) {
-      await fetch(`/api/wishlist/${data.recipe.id}?profile_id=${profileId}`, {
+      await fetch(`/api/wishlist/${data.recipe.id}?profile_id=${profile.id}`, {
         method: 'DELETE'
       });
-      wishlistProfileIds = wishlistProfileIds.filter((id) => id !== profileId);
+      wishlistProfileIds = wishlistProfileIds.filter((id) => id !== profile.id);
     } else {
       await fetch('/api/wishlist', {
         method: 'POST',
         headers: { 'content-type': 'application/json' },
-        body: JSON.stringify({ recipe_id: data.recipe.id, profile_id: profileId })
+        body: JSON.stringify({ recipe_id: data.recipe.id, profile_id: profile.id })
       });
-      wishlistProfileIds = [...wishlistProfileIds, profileId];
+      wishlistProfileIds = [...wishlistProfileIds, profile.id];
     }
     void wishlistStore.refresh();
     if (!wasOn) void firePulse('wish');