Add multi-select machine filters

Replace machine dropdowns with multi-select chips and pass machine lists in queries.

Signed-off-by: codex@lucy.xalior.com

src/app/api/zxdb/search/route.ts

@@ -12,12 +12,21 @@ const querySchema = z.object({
     .trim()
     .length(2, "languageId must be a 2-char code")
     .optional(),
-  machinetypeId: z.coerce.number().int().positive().optional(),
+  machinetypeId: z.string().optional(),
   sort: z.enum(["title", "id_desc"]).optional(),
   scope: z.enum(["title", "title_aliases", "title_aliases_origins"]).optional(),
   facets: z.coerce.boolean().optional(),
 });
 
+function parseIdList(value: string | undefined) {
+  if (!value) return undefined;
+  const ids = value
+    .split(",")
+    .map((id) => Number(id.trim()))
+    .filter((id) => Number.isFinite(id) && id > 0);
+  return ids.length ? ids : undefined;
+}
+
 export async function GET(req: NextRequest) {
   const { searchParams } = new URL(req.url);
   const parsed = querySchema.safeParse({
@@ -37,9 +46,11 @@ export async function GET(req: NextRequest) {
       { status: 400, headers: { "content-type": "application/json" } }
     );
   }
-  const data = await searchEntries(parsed.data);
+  const machinetypeId = parseIdList(parsed.data.machinetypeId);
+  const searchParamsParsed = { ...parsed.data, machinetypeId };
+  const data = await searchEntries(searchParamsParsed);
   const body = parsed.data.facets
-    ? { ...data, facets: await getEntryFacets(parsed.data) }
+    ? { ...data, facets: await getEntryFacets(searchParamsParsed) }
     : data;
   return new Response(JSON.stringify(body), {
     headers: { "content-type": "application/json" },