feat: floating contact bar, remove pricing contact links, fix admin hooks

- Add FloatingContact bar (Записаться + Instagram) visible while scrolling
- Hides on hero and near contact section, centered at bottom
- Move BackToTop button up to avoid overlap
- Remove redundant ContactHint from Pricing section (floating bar covers it)
- Fix React hooks order violation in AdminLayout (early return before useEffect)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/sections/Pricing.tsx

@@ -1,10 +1,9 @@
 "use client";
 
 import { useState } from "react";
-import { CreditCard, Building2, ScrollText, Crown, Sparkles, Instagram, Send, Phone } from "lucide-react";
+import { CreditCard, Building2, ScrollText, Crown, Sparkles } from "lucide-react";
 import { SectionHeading } from "@/components/ui/SectionHeading";
 import { Reveal } from "@/components/ui/Reveal";
-import { BRAND } from "@/lib/constants";
 import type { SiteContent } from "@/types/content";
 
 type Tab = "prices" | "rental" | "rules";
@@ -13,43 +12,8 @@ interface PricingProps {
   data: SiteContent["pricing"];
 }
 
-function ContactHint() {
-  return (
-    <div className="mt-5 flex flex-wrap items-center justify-center gap-3 text-xs text-neutral-500">
-      <span>Для записи и бронирования:</span>
-      <a
-        href={BRAND.instagram}
-        target="_blank"
-        rel="noopener noreferrer"
-        className="inline-flex items-center gap-1 rounded-full border border-white/[0.06] px-3 py-1.5 text-pink-400 hover:text-pink-300 hover:border-pink-400/30 transition-colors"
-      >
-        <Instagram size={12} />
-        Instagram
-      </a>
-      <a
-        href="https://t.me/blackheartdancehouse"
-        target="_blank"
-        rel="noopener noreferrer"
-        className="inline-flex items-center gap-1 rounded-full border border-white/[0.06] px-3 py-1.5 text-blue-400 hover:text-blue-300 hover:border-blue-400/30 transition-colors"
-      >
-        <Send size={12} />
-        Telegram
-      </a>
-      <a
-        href="tel:+375293897001"
-        className="inline-flex items-center gap-1 rounded-full border border-white/[0.06] px-3 py-1.5 text-emerald-400 hover:text-emerald-300 hover:border-emerald-400/30 transition-colors"
-      >
-        <Phone size={12} />
-        Позвонить
-      </a>
-    </div>
-  );
-}
-
 export function Pricing({ data: pricing }: PricingProps) {
   const [activeTab, setActiveTab] = useState<Tab>("prices");
-  const showHint = pricing.showContactHint !== false; // default true
-
   const tabs: { id: Tab; label: string; icon: React.ReactNode }[] = [
     { id: "prices", label: "Абонементы", icon: <CreditCard size={16} /> },
     { id: "rental", label: "Аренда зала", icon: <Building2 size={16} /> },
@@ -166,8 +130,7 @@ export function Pricing({ data: pricing }: PricingProps) {
                 </div>
               )}
 
-              {showHint && <ContactHint />}
-            </div>
+                          </div>
           </Reveal>
         )}
 
@@ -196,8 +159,7 @@ export function Pricing({ data: pricing }: PricingProps) {
                 </div>
               ))}
 
-              {showHint && <ContactHint />}
-            </div>
+                          </div>
           </Reveal>
         )}