feat(sok): fuzzy kock-sok + 'Menade du...?'-forslag

Felstavade kocknamn hittar ratt kock: aliaslista (remsey/ramsey -> Gordon
Ramsay) + trigram word_similarity (ramzay/otolengi). Ger nolltraffar ett
'Menade du <term>?'-forslag (tappbart) mot titlar, kocknamn, ingredienser.

apps/api/src/routes/recommendations.ts

@@ -37,6 +37,66 @@ import { loadLocalePreferences } from "../lib/localeContext.js";
  *  4. Matlådor rekommenderas före ny matlagning när rimligt (spec §24).
  *  5. (Bakom flagga) AAMOS får omranka topplistan – aldrig lägga till recept.
  */
+/** Kock-alias (spec: named-chef search) inkl. medvetna felstavningar, så att
+ * sök hittar rätt kock även vid felskrivning ("remsey" → Gordon Ramsay). */
+const CHEF_ALIASES: Record<string, string> = {
+  gordon: "Gordon Ramsay",
+  ramsay: "Gordon Ramsay",
+  ramsey: "Gordon Ramsay",
+  remsey: "Gordon Ramsay",
+  remsay: "Gordon Ramsay",
+  jamie: "Jamie Oliver",
+  oliver: "Jamie Oliver",
+  nigella: "Nigella Lawson",
+  lawson: "Nigella Lawson",
+  yotam: "Yotam Ottolenghi",
+  ottolenghi: "Yotam Ottolenghi",
+  marcus: "Marcus Samuelsson",
+  samuelsson: "Marcus Samuelsson",
+  giada: "Giada De Laurentiis",
+  laurentiis: "Giada De Laurentiis",
+  emeril: "Emeril Lagasse",
+  lagasse: "Emeril Lagasse",
+  ina: "Ina Garten",
+  garten: "Ina Garten",
+  "barefoot contessa": "Ina Garten",
+  raymond: "Raymond Blanc",
+  blanc: "Raymond Blanc",
+  rick: "Rick Stein",
+  stein: "Rick Stein",
+};
+
+function resolveChefAliases(search: string): string[] {
+  const s = search.toLowerCase().trim();
+  if (s.length < 3) return [];
+  const hits = new Set<string>();
+  for (const [alias, name] of Object.entries(CHEF_ALIASES)) {
+    if (s === alias || s.includes(alias) || alias.includes(s)) hits.add(name);
+  }
+  return [...hits];
+}
+
+/** "Menade du …?" – närmaste term via trigram word_similarity mot titlar,
+ * kocknamn, ingredienser och högtider. Null om inget är nära nog. */
+async function computeSearchSuggestion(
+  app: FastifyInstance,
+  search: string,
+): Promise<string | null> {
+  const result = await app.db.execute(sql`
+    SELECT term FROM (
+      SELECT title_sv AS term FROM recipes WHERE status = 'published'
+      UNION SELECT DISTINCT creator_display_name FROM recipes WHERE creator_display_name NOT ILIKE '%redaktion%'
+      UNION SELECT name_sv FROM canonical_ingredients
+      UNION SELECT name_sv FROM season_events
+    ) c
+    WHERE word_similarity(${search}, term) > 0.4
+    ORDER BY word_similarity(${search}, term) DESC
+    LIMIT 1
+  `);
+  const rows = (Array.isArray(result) ? result : result.rows) as Array<{ term: string }>;
+  return rows[0]?.term ?? null;
+}
+
 export async function recommendationRoutes(app: FastifyInstance) {
   const auth = { preHandler: [app.authenticate] };
 
@@ -118,6 +178,8 @@ export async function recommendationRoutes(app: FastifyInstance) {
 
     // --- 3. Kandidater: publicerade recept för måltidstypen (eller taggen) ---
     // Baka-fliken skickar tag=baking i stället för en måltidstyp.
+    // Felstavade kocknamn (t.ex. "remsey") mappas via alias till rätt kock.
+    const chefMatches = q.search ? resolveChefAliases(q.search) : [];
     const candidates = await app.db
       .select()
       .from(schema.recipes)
@@ -139,6 +201,12 @@ export async function recommendationRoutes(app: FastifyInstance) {
                 sql`EXISTS (SELECT 1 FROM recipe_ingredients ri JOIN canonical_ingredients ci ON ci.id = ri.canonical_ingredient_id WHERE ri.recipe_id = ${schema.recipes.id} AND ci.name_sv ILIKE ${"%" + q.search + "%"})`,
                 // Kock/källa: "ramsay"/"ottolenghi" → recept krediterade den kocken.
                 ilike(schema.recipes.creatorDisplayName, `%${q.search}%`),
+                // Felstavat kocknamn via alias ("remsey" → Gordon Ramsay).
+                chefMatches.length
+                  ? inArray(schema.recipes.creatorDisplayName, chefMatches)
+                  : sql`false`,
+                // Fuzzy kocknamn (fångar t.ex. "ramzay"/"otolengi" utan aliaslista).
+                sql`word_similarity(${q.search}, ${schema.recipes.creatorDisplayName}) > 0.42`,
               )
             : q.holiday
               ? sql`${q.holiday} = ANY(${schema.recipes.holidayTags})`
@@ -528,6 +596,12 @@ export async function recommendationRoutes(app: FastifyInstance) {
       ]),
     );
 
+    // "Menade du …?" – bara när en sökning gav noll träffar (grov felstavning).
+    const searchSuggestion =
+      q.search && recommendations.length === 0
+        ? await computeSearchSuggestion(app, q.search)
+        : null;
+
     return {
       mealType: q.mealType,
       context: {
@@ -541,6 +615,7 @@ export async function recommendationRoutes(app: FastifyInstance) {
         remainingProteinG: ctx.remainingProteinG,
         craving: craving ?? null,
         view: q.view,
+        searchSuggestion,
       },
       mealBoxSuggestions,
       recommendations: recommendations.map((r) => ({