Implement magazine reviews, label details, and year filtering

- Aggregate magazine references from all releases on the Entry detail page.
- Display country names and external links (Wikipedia/Website) on the Label detail page.
- Add a year filter to the ZXDB Explorer to search entries by release year.

Signed-off: junie@lucy.xalior.com

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

@@ -13,6 +13,7 @@ const querySchema = z.object({
     .length(2, "languageId must be a 2-char code")
     .optional(),
   machinetypeId: z.string().optional(),
+  year: z.coerce.number().int().optional(),
   sort: z.enum(["title", "id_desc"]).optional(),
   scope: z.enum(["title", "title_aliases", "title_aliases_origins"]).optional(),
   facets: z.coerce.boolean().optional(),
@@ -36,6 +37,7 @@ export async function GET(req: NextRequest) {
     genreId: searchParams.get("genreId") ?? undefined,
     languageId: searchParams.get("languageId") ?? undefined,
     machinetypeId: searchParams.get("machinetypeId") ?? undefined,
+    year: searchParams.get("year") ?? undefined,
     sort: searchParams.get("sort") ?? undefined,
     scope: searchParams.get("scope") ?? undefined,
     facets: searchParams.get("facets") ?? undefined,