fix: browser tab title should always just say "Epicure"

Root layout used title.template ("%s | Epicure") and 38 pages set
their own title, producing "Recipes | Epicure", "Messages — Epicure",
etc. Drop the template, set a flat "Epicure" default, and clear every
page's title override so they all inherit it.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/web/app/(app)/collections/[id]/page.tsx

@@ -16,7 +16,7 @@ import { getMessages } from "@/lib/i18n/server";
 
 type Params = { params: Promise<{ id: string }> };
 
-export const metadata: Metadata = { title: "Collection" };
+export const metadata: Metadata = {};
 
 export default async function CollectionPage({ params }: Params) {
   const { id } = await params;