feat(connect): Phase 6 — menu-app and manager-app frontend SPAs

Two Vite + React 18 + Tailwind apps under connect_frontend/.
Both use React Router v6, Axios, react-hot-toast, and Lucide icons.
Neither uses localStorage — tokens live in sessionStorage (manager-app)
or component state (menu-app cart).

── menu-app (public menu + ordering) ──────────────────────────────

Routing (basename /menu):
  /:siteSlug              → MenuPage
  /:siteSlug/order        → CartPage
  /:siteSlug/confirm/:ref → OrderConfirm

Pages:
  MenuPage      — fetches menu snapshot, category nav tabs, product
                  cards; floating CartButton; opens ProductModal
  ProductModal  — quantity picker, quick-option toggles, price/discount
                  display, "Add to order" with line total
  CartPage      — order type selector (dine_in/delivery), customer
                  details form, cart summary, submits to cloud API
  OrderConfirm  — polls GET /api/orders/status/:ref every 10s;
                  renders status icon + label; stops polling on
                  terminal states (delivered/rejected)

Components:
  CategoryNav   — horizontal scrollable pill tabs
  ProductCard   — image, name, description, price with discount badge;
                  greyed + "Out of stock" badge when unavailable
  CartButton    — fixed bottom bar with item count + total

── manager-app (remote dashboard) ─────────────────────────────────

Routing (basename /manage):
  /login              → LoginPage
  /                   → SiteSelectorPage (auto-navigates if one site)
  /:siteId            → DashboardPage
  /:siteId/orders     → IncomingOrdersPage
  /:siteId/orders/history → OrderHistoryPage
  /:siteId/orders/:id → OrderDetailPage
  RequireAuth wrapper redirects to /login if no sessionStorage token

Pages:
  LoginPage          — email/password → POST /api/manager/login;
                       stores JWT in sessionStorage
  SiteSelectorPage   — lists accessible venues; auto-selects if one
  DashboardPage      — polls snapshot + pending orders every 15s;
                       2×2 stat grid + pending order list
  IncomingOrdersPage — polls pending orders every 15s; order cards
  OrderDetailPage    — full order detail; Accept/Reject with optional
                       rejection reason; lifecycle progression buttons
                       (Preparing → Ready → Delivered etc.)
  OrderHistoryPage   — all orders with status filter tabs

Components:
  RequireAuth   — route guard using sessionStorage token
  StatCard      — labelled metric tile
  StatusBadge   — colour-coded status pill
  OrderCard     — summary card linking to OrderDetailPage
  (no OrderCard uses useParams to get siteId for nav — wired correctly)

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

connect_frontend/manager-app/src/pages/LoginPage.jsx

@@ -0,0 +1,77 @@
+import { useState } from 'react'
+import { useNavigate } from 'react-router-dom'
+import { KeyRound } from 'lucide-react'
+import { managerLogin } from '../api'
+import toast from 'react-hot-toast'
+
+export default function LoginPage() {
+  const [email, setEmail] = useState('')
+  const [password, setPassword] = useState('')
+  const [loading, setLoading] = useState(false)
+  const navigate = useNavigate()
+
+  async function handleSubmit(e) {
+    e.preventDefault()
+    if (!email || !password) return
+    setLoading(true)
+    try {
+      const data = await managerLogin(email, password)
+      sessionStorage.setItem('manager_token', data.access_token)
+      navigate('/', { replace: true })
+    } catch (err) {
+      toast.error(err.response?.data?.detail || 'Invalid credentials')
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  return (
+    <div className="min-h-screen bg-gradient-to-br from-slate-50 to-sky-50 flex items-center justify-center p-4">
+      <div className="w-full max-w-sm">
+        <div className="bg-white rounded-2xl shadow-xl border border-slate-100 p-8">
+          <form onSubmit={handleSubmit} className="space-y-5">
+            <div className="text-center space-y-2">
+              <div className="flex justify-center mb-3">
+                <div className="w-12 h-12 bg-sky-500 rounded-xl flex items-center justify-center">
+                  <KeyRound className="text-white" size={22} />
+                </div>
+              </div>
+              <h1 className="text-xl font-bold text-slate-800">Xenia Connect</h1>
+              <p className="text-sm text-slate-500">Manager Dashboard</p>
+            </div>
+
+            <div className="space-y-3">
+              <input
+                type="email"
+                value={email}
+                onChange={e => setEmail(e.target.value)}
+                placeholder="Email"
+                autoComplete="email"
+                required
+                className="w-full border border-slate-200 rounded-xl px-4 py-3 text-sm outline-none focus:border-sky-400 focus:ring-1 focus:ring-sky-100"
+              />
+              <input
+                type="password"
+                value={password}
+                onChange={e => setPassword(e.target.value)}
+                placeholder="Password"
+                autoComplete="current-password"
+                required
+                className="w-full border border-slate-200 rounded-xl px-4 py-3 text-sm outline-none focus:border-sky-400 focus:ring-1 focus:ring-sky-100"
+              />
+            </div>
+
+            <button
+              type="submit"
+              disabled={loading}
+              className="w-full bg-sky-500 hover:bg-sky-600 disabled:opacity-60 text-white py-3 rounded-xl font-semibold transition-colors"
+            >
+              {loading ? 'Signing in…' : 'Sign In'}
+            </button>
+          </form>
+        </div>
+        <p className="text-center text-xs text-slate-400 mt-4">Xenia POS · Remote Manager</p>
+      </div>
+    </div>
+  )
+}