fix: full Apple HIG mobile + SEO audit - all issues resolved

MOBILE RESPONSIVENESS (Apple HIG):
- HeroSection: typography scaled 7xl→4xl sm:5xl md:6xl lg:7xl, responsive px/py, rounded-2xl, active:scale-95
- Cart quantity buttons: h-8→h-11 w-8→w-11 (44px touch target), rounded-xl, active:scale-95
- StorefrontFooter newsletter: responsive w-full sm:w-52 lg:w-64, aria-label, larger touch targets
- StorefrontHeader mobile nav: padding px-6→px-4 py-6→py-5
- AdminTable: overflow-x-auto + min-w-[600px] for horizontal scroll
- AdminOrdersPanel: same table overflow fix
- AdminLayout: mobile px-4 sm:px-6 py-6 sm:py-10
- AdminFilterTabs: responsive text/text sizes
- AdminSidebar hamburger: h-10→h-11 w-10→w-11 (44px touch target)
- DashboardClient: grid gap-3 sm:gap-4, responsive stat text
- OrderEditForm: grid-cols-1 sm:grid-cols-2 (was 2, breaks on mobile)
- BillingClient: min-h-[44px] on select/button
- ProductsClient: h-32 sm:h-40 responsive image height
- StopCard: line-clamp-2 instead of line-clamp-1 on location
- CommunicationsPage: tabs wrapped in overflow-x-auto
- Checkout page: grid breakpoint md not lg
- Tuxedo page: SectionHeader mobile-first, feature grid grid-cols-1 sm:2, label visible
- Tuxedo stats: text-3xl sm:text-4xl

SEO METADATA:
- Root layout: viewport export, full OG/Twitter, metadataBase, keywords, robots
- Tuxedo layout: complete OG + Twitter + canonical + keywords
- Indian River layout: complete OG + Twitter + canonical + keywords
- Tuxedo/IRD FAQ pages: new layout.tsx with full metadata + FAQPage JSON-LD schema
- Tuxedo/IRD Contact pages: new layout.tsx with full metadata
- Pricing page: expanded metadata with OG/Twitter
- Contact page: refactored to layout+ClientPage structure
- Sitemap: updated with dynamic stop URLs, async function

SCHEMA + STRUCTURED DATA:
- FAQPage JSON-LD on FAQ pages
- BreadcrumbList JSON-LD on storefront layouts
- BreadcrumbNav component created (Apple HIG compliant)

BUG FIXES:
- Indian River: replaced raw <img> with Next.js Image component
- Indian River: verified single H1 (others are h2)
- Stop card: location line-clamp-2 for better readability

TYPE CHECK: all pass

src/app/cart/page.tsx

@@ -272,12 +272,12 @@ export default function CartPage() {
                       <div className="flex items-center gap-3">
                         <button
                           onClick={() => decreaseQuantity(item.id)}
-                          className="flex h-8 w-8 items-center justify-center rounded-full bg-white/10 text-white hover:bg-white/20 transition-all text-lg font-medium"
+                          className="flex h-11 w-11 items-center justify-center rounded-xl bg-white/10 text-white hover:bg-white/20 active:scale-95 transition-all text-xl font-medium"
                         >−</button>
-                        <span className="w-8 text-center font-semibold text-white">{item.quantity}</span>
+                        <span className="w-10 text-center font-semibold text-white">{item.quantity}</span>
                         <button
                           onClick={() => increaseQuantity(item.id)}
-                          className="flex h-8 w-8 items-center justify-center rounded-full bg-emerald-500 text-white hover:bg-emerald-400 transition-all text-lg font-medium shadow-lg shadow-emerald-500/20"
+                          className="flex h-11 w-11 items-center justify-center rounded-xl bg-emerald-500 text-white hover:bg-emerald-400 active:scale-95 transition-all text-xl font-medium shadow-lg shadow-emerald-500/20"
                         >+</button>
                       </div>
                     </div>