Separate CP admin panel into independent Vite project at /cp/

- New /cp/ Vite project with own package.json, Dockerfile, tailwind config
- Migrated CpLoginPage, CpLayout, AdminDashboard → cp/src/ (self-contained)
- cp/src/lib/utils.ts has only what CP needs (cn, PLAN_LABELS, PLAN_COLORS)
- cp/src/data/mockData.ts has Hotel/User types and mock data
- cp/ builds to nginx static container (hotelsync-cp)
- docker-compose.yml: added cp service
- nginx: added cp.hotelsync.ru → hotelsync-cp:80 (SSL block ready for certbot)
- deploy.yml: builds hotelsync-cp:latest and restarts container on push
- Cleaned src/App.tsx: removed IS_CP branch, CpLoginPage/CpLayout/AdminDashboard imports

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cp/src/lib/utils.ts

@@ -0,0 +1,20 @@
+import { clsx, type ClassValue } from 'clsx'
+import { twMerge } from 'tailwind-merge'
+
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs))
+}
+
+export type HotelPlan = 'starter' | 'pro' | 'enterprise'
+
+export const PLAN_LABELS: Record<HotelPlan, string> = {
+  starter:    'Starter',
+  pro:        'Pro',
+  enterprise: 'Enterprise',
+}
+
+export const PLAN_COLORS: Record<HotelPlan, string> = {
+  starter:    'bg-slate-700 text-slate-300',
+  pro:        'bg-brand-900/30 text-brand-300',
+  enterprise: 'bg-amber-900/30 text-amber-300',
+}