refactor(home): Live-Search auf SearchStore migriert

Entfernt die duplizierten $state-Felder, runSearch, loadMore und
beide Debounce-Effekte. URL-Sync, Snapshot und Filter-Re-Search
bleiben hier — delegieren aber an den Store. All-Recipes-Infinite-
Scroll unberuehrt (separate UI-Concern).

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

src/routes/+page.svelte

@@ -4,32 +4,27 @@
   import { CookingPot, X } from 'lucide-svelte';
   import type { Snapshot } from './$types';
   import type { SearchHit } from '$lib/server/recipes/search-local';
-  import type { WebHit } from '$lib/server/search/searxng';
   import { randomQuote } from '$lib/quotes';
   import SearchLoader from '$lib/components/SearchLoader.svelte';
   import SearchFilter from '$lib/components/SearchFilter.svelte';
   import { profileStore } from '$lib/client/profile.svelte';
   import { searchFilterStore } from '$lib/client/search-filter.svelte';
   import { requireOnline } from '$lib/client/require-online';
+  import { SearchStore, type SearchSnapshot } from '$lib/client/search.svelte';
 
   const LOCAL_PAGE = 30;
 
-  let query = $state('');
+  const store = new SearchStore({
+    pageSize: LOCAL_PAGE,
+    filterParam: () => {
+      const p = searchFilterStore.queryParam;
+      return p ? `&domains=${encodeURIComponent(p)}` : '';
+    }
+  });
+
   let quote = $state('');
   let recent = $state<SearchHit[]>([]);
   let favorites = $state<SearchHit[]>([]);
-  let hits = $state<SearchHit[]>([]);
-  let webHits = $state<WebHit[]>([]);
-  let searching = $state(false);
-  let webSearching = $state(false);
-  let webError = $state<string | null>(null);
-  let searchedFor = $state<string | null>(null);
-  let localExhausted = $state(false);
-  let webPageno = $state(0);
-  let webExhausted = $state(false);
-  let loadingMore = $state(false);
-  let skipNextSearch = false;
-  let debounceTimer: ReturnType<typeof setTimeout> | null = null;
 
   const ALL_PAGE = 10;
   type AllSort = 'name' | 'rating' | 'cooked' | 'created';
@@ -47,39 +42,9 @@
   let allChips: HTMLElement | undefined = $state();
   let allObserver: IntersectionObserver | null = null;
 
-  type SearchSnapshot = {
-    query: string;
-    hits: SearchHit[];
-    webHits: WebHit[];
-    searchedFor: string | null;
-    webError: string | null;
-    localExhausted: boolean;
-    webPageno: number;
-    webExhausted: boolean;
-  };
-
   export const snapshot: Snapshot<SearchSnapshot> = {
-    capture: () => ({
+    capture: () => store.captureSnapshot(),
-      query,
+    restore: (s) => store.restoreSnapshot(s)
-      hits,
-      webHits,
-      searchedFor,
-      webError,
-      localExhausted,
-      webPageno,
-      webExhausted
-    }),
-    restore: (v) => {
-      query = v.query;
-      hits = v.hits;
-      webHits = v.webHits;
-      searchedFor = v.searchedFor;
-      webError = v.webError;
-      localExhausted = v.localExhausted;
-      webPageno = v.webPageno;
-      webExhausted = v.webExhausted;
-      skipNextSearch = true;
-    }
   };
 
   async function loadRecent() {
@@ -152,7 +117,7 @@
     // Restore query from URL so history.back() from preview/recipe
     // brings the user back to the same search results.
     const urlQ = ($page.url.searchParams.get('q') ?? '').trim();
-    if (urlQ) query = urlQ;
+    if (urlQ) store.query = urlQ;
     void loadRecent();
     void searchFilterStore.load();
     const saved = localStorage.getItem('kochwas.allSort');
@@ -188,14 +153,7 @@
   $effect(() => {
     // eslint-disable-next-line @typescript-eslint/no-unused-expressions
     searchFilterStore.active;
-    const q = query.trim();
+    store.reSearch();
-    if (!q || q.length <= 3) return;
-    if (debounceTimer) clearTimeout(debounceTimer);
-    searching = true;
-    webHits = [];
-    webSearching = false;
-    webError = null;
-    debounceTimer = setTimeout(() => void runSearch(q), 150);
   });
 
   // Sync current query back into the URL as ?q=... via replaceState,
@@ -203,7 +161,7 @@
   // when the user clicks a result or otherwise navigates away.
   $effect(() => {
     if (typeof window === 'undefined') return;
-    const q = query.trim();
+    const q = store.query.trim();
     const url = new URL(window.location.href);
     const current = url.searchParams.get('q') ?? '';
     if (q === current) return;
@@ -221,138 +179,17 @@
     void loadFavorites(active.id);
   });
 
-  function filterParam(): string {
-    const p = searchFilterStore.queryParam;
-    return p ? `&domains=${encodeURIComponent(p)}` : '';
-  }
-
-  async function runSearch(q: string) {
-    localExhausted = false;
-    webPageno = 0;
-    webExhausted = false;
-    try {
-      const res = await fetch(
-        `/api/recipes/search?q=${encodeURIComponent(q)}&limit=${LOCAL_PAGE}${filterParam()}`
-      );
-      const body = await res.json();
-      if (query.trim() !== q) return;
-      hits = body.hits;
-      searchedFor = q;
-      if (hits.length < LOCAL_PAGE) localExhausted = true;
-      if (hits.length === 0) {
-        // Gar keine lokalen Treffer → erste Web-Seite gleich laden,
-        // damit der User nicht extra auf „+ weitere" klicken muss.
-        webSearching = true;
-        try {
-          const wres = await fetch(
-            `/api/recipes/search/web?q=${encodeURIComponent(q)}&pageno=1${filterParam()}`
-          );
-          if (query.trim() !== q) return;
-          if (!wres.ok) {
-            const err = await wres.json().catch(() => ({}));
-            webError = err.message ?? `HTTP ${wres.status}`;
-            webExhausted = true;
-          } else {
-            const wbody = await wres.json();
-            webHits = wbody.hits;
-            webPageno = 1;
-            if (wbody.hits.length === 0) webExhausted = true;
-          }
-        } finally {
-          if (query.trim() === q) webSearching = false;
-        }
-      }
-    } finally {
-      if (query.trim() === q) searching = false;
-    }
-  }
-
-  async function loadMore() {
-    if (loadingMore) return;
-    const q = query.trim();
-    if (!q) return;
-    loadingMore = true;
-    try {
-      if (!localExhausted) {
-        // Noch mehr lokale Treffer holen.
-        const res = await fetch(
-          `/api/recipes/search?q=${encodeURIComponent(q)}&limit=${LOCAL_PAGE}&offset=${hits.length}${filterParam()}`
-        );
-        const body = await res.json();
-        if (query.trim() !== q) return;
-        const more = body.hits as SearchHit[];
-        const seen = new Set(hits.map((h) => h.id));
-        const deduped = more.filter((h) => !seen.has(h.id));
-        hits = [...hits, ...deduped];
-        if (more.length < LOCAL_PAGE) localExhausted = true;
-      } else if (!webExhausted) {
-        // Lokale erschöpft → auf Web umschalten / weiterblättern.
-        const nextPage = webPageno + 1;
-        webSearching = webHits.length === 0;
-        try {
-          const wres = await fetch(
-            `/api/recipes/search/web?q=${encodeURIComponent(q)}&pageno=${nextPage}${filterParam()}`
-          );
-          if (query.trim() !== q) return;
-          if (!wres.ok) {
-            const err = await wres.json().catch(() => ({}));
-            webError = err.message ?? `HTTP ${wres.status}`;
-            webExhausted = true;
-            return;
-          }
-          const wbody = await wres.json();
-          const more = wbody.hits as WebHit[];
-          const seen = new Set(webHits.map((h) => h.url));
-          const deduped = more.filter((h) => !seen.has(h.url));
-          if (deduped.length === 0) {
-            webExhausted = true;
-          } else {
-            webHits = [...webHits, ...deduped];
-            webPageno = nextPage;
-          }
-        } finally {
-          if (query.trim() === q) webSearching = false;
-        }
-      }
-    } finally {
-      loadingMore = false;
-    }
-  }
-
   $effect(() => {
-    const q = query.trim();
+    // eslint-disable-next-line @typescript-eslint/no-unused-expressions
-    if (debounceTimer) clearTimeout(debounceTimer);
+    store.query; // register reactive dep
-    if (skipNextSearch) {
+    store.runDebounced();
-      // Snapshot-Restore hat hits/webHits/searchedFor wiederhergestellt —
-      // nicht erneut fetchen.
-      skipNextSearch = false;
-      return;
-    }
-    if (q.length <= 3) {
-      hits = [];
-      webHits = [];
-      searchedFor = null;
-      searching = false;
-      webSearching = false;
-      webError = null;
-      return;
-    }
-    searching = true;
-    webHits = [];
-    webSearching = false;
-    webError = null;
-    debounceTimer = setTimeout(() => {
-      void runSearch(q);
-    }, 300);
   });
 
   function submit(e: SubmitEvent) {
     e.preventDefault();
-    const q = query.trim();
+    const q = store.query.trim();
     if (q.length <= 3) return;
-    if (debounceTimer) clearTimeout(debounceTimer);
+    void store.runSearch(q);
-    searching = true;
-    void runSearch(q);
   }
 
   async function dismissFromRecent(recipeId: number, e: MouseEvent) {
@@ -367,7 +204,7 @@
     });
   }
 
-  const activeSearch = $derived(query.trim().length > 3);
+  const activeSearch = $derived(store.query.trim().length > 3);
 </script>
 
 <section class="hero">
@@ -378,7 +215,7 @@
       <SearchFilter inline />
       <input
         type="search"
-        bind:value={query}
+        bind:value={store.query}
         placeholder="Rezept suchen…"
         autocomplete="off"
         inputmode="search"
@@ -390,12 +227,12 @@
 
 {#if activeSearch}
   <section class="results">
-    {#if searching && hits.length === 0 && webHits.length === 0}
+    {#if store.searching && store.hits.length === 0 && store.webHits.length === 0}
       <SearchLoader scope="local" />
     {:else}
-      {#if hits.length > 0}
+      {#if store.hits.length > 0}
         <ul class="cards">
-          {#each hits as r (r.id)}
+          {#each store.hits as r (r.id)}
             <li>
               <a href={`/recipes/${r.id}`} class="card">
                 {#if r.image_path}
@@ -413,20 +250,20 @@
             </li>
           {/each}
         </ul>
-      {:else if searchedFor === query.trim() && !webSearching && webHits.length === 0 && !webError}
+      {:else if store.searchedFor === store.query.trim() && !store.webSearching && store.webHits.length === 0 && !store.webError}
-        <p class="muted no-local-msg">Keine lokalen Rezepte für „{searchedFor}".</p>
+        <p class="muted no-local-msg">Keine lokalen Rezepte für „{store.searchedFor}".</p>
       {/if}
 
-      {#if webHits.length > 0}
+      {#if store.webHits.length > 0}
-        {#if hits.length > 0}
+        {#if store.hits.length > 0}
           <h3 class="sep">Aus dem Internet</h3>
-        {:else if searchedFor === query.trim()}
+        {:else if store.searchedFor === store.query.trim()}
           <p class="muted no-local-msg">
-            Keine lokalen Rezepte für „{searchedFor}" — Ergebnisse aus dem Internet:
+            Keine lokalen Rezepte für „{store.searchedFor}" — Ergebnisse aus dem Internet:
           </p>
         {/if}
         <ul class="cards">
-          {#each webHits as w (w.url)}
+          {#each store.webHits as w (w.url)}
             <li>
               <a class="card" href={`/preview?url=${encodeURIComponent(w.url)}`}>
                 {#if w.thumbnail}
@@ -444,16 +281,16 @@
         </ul>
       {/if}
 
-      {#if webSearching}
+      {#if store.webSearching}
         <SearchLoader scope="web" />
-      {:else if webError && webHits.length === 0}
+      {:else if store.webError && store.webHits.length === 0}
-        <p class="error">Internet-Suche zurzeit nicht möglich: {webError}</p>
+        <p class="error">Internet-Suche zurzeit nicht möglich: {store.webError}</p>
       {/if}
 
-      {#if searchedFor === query.trim() && !(localExhausted && webExhausted) && !(searching && hits.length === 0)}
+      {#if store.searchedFor === store.query.trim() && !(store.localExhausted && store.webExhausted) && !(store.searching && store.hits.length === 0)}
         <div class="more-cta">
-          <button class="more-btn" onclick={loadMore} disabled={loadingMore || webSearching}>
+          <button class="more-btn" onclick={() => store.loadMore()} disabled={store.loadingMore || store.webSearching}>
-            {loadingMore || webSearching ? 'Lade …' : '+ weitere Ergebnisse'}
+            {store.loadingMore || store.webSearching ? 'Lade …' : '+ weitere Ergebnisse'}
           </button>
         </div>
       {/if}