feat(searxng): Suche-Pipeline loggen für Diagnose

Statt eine separate Debug-Seite zu bauen: bei jeder Web-Suche werden
zwei kompakte Log-Zeilen nach stdout geschrieben, die den Filter-Verlust
pro Pipeline-Schritt zeigen. In den Pi-Docker-Logs (docker compose logs
kochwas) leicht über grep '[searxng]' zu finden.

Format:
[searxng] q="…" pageno=1 domains=3 raw=12 non_whitelist=2
         non_recipe_url=4 dup=0 kept_pre_enrich=6
[searxng] q="…" pageno=1 enrich=6 dropped_non_recipe=3 final=3

Damit lässt sich gezielt sehen, ob rezeptwelt-Treffer am looksLikeRecipePage-
Filter, am hasRecipe-Check oder schon bei SearXNG selbst verloren gehen.

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

src/lib/server/search/searxng.ts

@@ -331,11 +331,23 @@ export async function searchWeb(
   const allowed = new Set(domains);
   const seen = new Set<string>();
   const hits: WebHit[] = [];
+  let dropNonWhitelist = 0;
+  let dropNonRecipeUrl = 0;
+  let dropDup = 0;
   for (const r of results) {
     const host = hostnameFromUrl(r.url);
-    if (!host || !allowed.has(host)) continue;
-    if (!looksLikeRecipePage(r.url)) continue;
-    if (seen.has(r.url)) continue;
+    if (!host || !allowed.has(host)) {
+      dropNonWhitelist += 1;
+      continue;
+    }
+    if (!looksLikeRecipePage(r.url)) {
+      dropNonRecipeUrl += 1;
+      continue;
+    }
+    if (seen.has(r.url)) {
+      dropDup += 1;
+      continue;
+    }
     seen.add(r.url);
     hits.push({
       url: r.url,
@@ -346,8 +358,15 @@ export async function searchWeb(
     });
     if (hits.length >= limit) break;
   }
+  console.log(
+    `[searxng] q=${JSON.stringify(trimmed)} pageno=${pageno} domains=${domains.length} raw=${results.length} non_whitelist=${dropNonWhitelist} non_recipe_url=${dropNonRecipeUrl} dup=${dropDup} kept_pre_enrich=${hits.length}`
+  );
   if (opts.enrichThumbnails !== false) {
-    return await enrichAndFilterHits(db, hits);
+    const enriched = await enrichAndFilterHits(db, hits);
+    console.log(
+      `[searxng] q=${JSON.stringify(trimmed)} pageno=${pageno} enrich=${hits.length} dropped_non_recipe=${hits.length - enriched.length} final=${enriched.length}`
+    );
+    return enriched;
   }
   return hits;
 }