Extract a shared Logo component for the header and footer

The header inlined its own logo/wordmark fallback markup. Pull it into
components/logo.tsx so the footer can show the same mark, and drop the
now-unneeded 'use client' from the root layout.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VUttSNLkLPvvR6Xf75QA1K

components/shopify/footer.tsx

@@ -4,6 +4,7 @@ import {
   RiTiktokLine,
   RiFacebookFill,
 } from '@remixicon/react';
+import Logo from '@/components/logo';
 
 export interface FooterLink {
   label: string;
@@ -12,6 +13,7 @@ export interface FooterLink {
 
 interface FooterProps {
   storeName?: string;
+  logoUrl?: string;
   copyright?: string;
   links?: FooterLink[];
   instagramUrl?: string;
@@ -21,6 +23,7 @@ interface FooterProps {
 
 const Footer: React.FC<FooterProps> = ({
   storeName = 'Shop',
+  logoUrl,
   copyright,
   links = [
     { label: 'Terms of Service', url: '/policies/terms-of-service' },
@@ -46,6 +49,13 @@ const Footer: React.FC<FooterProps> = ({
             assistant launcher. Links and socials sit on separate rows so the
             icons aren't crammed onto the end of the link list. */}
         <div className="flex flex-col items-center gap-y-5 sm:items-start">
+          <Logo
+            src={logoUrl}
+            storeName={storeName}
+            imageClassName="h-5"
+            textClassName="text-base"
+          />
+
           <nav className="flex flex-wrap items-center justify-center gap-x-5 gap-y-2 sm:justify-start">
             {links.map((link) => (
               <a