Initial commit: LiveStream Platform

Backend: FastAPI + SQLAlchemy + SQLite
Frontend: React + Vite + Ant Design (serif Anthropic theme)
Media server: MediaMTX with edge node support
Load balancing: round-robin / weighted / least-conn
Multicast detection with automatic fallback
Transcoding support via FFmpeg (configurable quality)
hls.js player with line & quality switching
Admin panel with password auth
Windows compatible scripts

frontend/src/App.tsx

@@ -0,0 +1,52 @@
+import { useState, useEffect } from 'react'
+import { BrowserRouter, Routes, Route, Navigate } from 'react-router-dom'
+import { ConfigProvider } from 'antd'
+import theme from './theme/anthropic'
+import AdminLayout from './admin/AdminLayout'
+import LoginPage from './admin/LoginPage'
+import Dashboard from './admin/pages/Dashboard'
+import StreamList from './admin/pages/StreamList'
+import StreamForm from './admin/pages/StreamForm'
+import NodeManager from './admin/pages/NodeManager'
+import SettingsPage from './admin/pages/Settings'
+import WatchPage from './viewer/pages/WatchPage'
+import { verifyToken, getToken } from './api/auth'
+
+function AdminGuard({ children }: { children: React.ReactNode }) {
+  const [authed, setAuthed] = useState<boolean | null>(null)
+
+  useEffect(() => {
+    const token = getToken()
+    if (!token) { setAuthed(false); return }
+    verifyToken().then(setAuthed)
+  }, [])
+
+  if (authed === null) return null
+  if (!authed) return <Navigate to="/admin/login" replace />
+  return <>{children}</>
+}
+
+export default function App() {
+  return (
+    <ConfigProvider theme={theme}>
+      <BrowserRouter>
+        <Routes>
+          <Route path="/watch/:id" element={<WatchPage />} />
+          <Route path="/admin/login" element={<LoginPage />} />
+          <Route path="/admin" element={
+            <AdminGuard>
+              <AdminLayout />
+            </AdminGuard>
+          }>
+            <Route index element={<Dashboard />} />
+            <Route path="streams" element={<StreamList />} />
+            <Route path="streams/new" element={<StreamForm />} />
+            <Route path="nodes" element={<NodeManager />} />
+            <Route path="settings" element={<SettingsPage />} />
+          </Route>
+          <Route path="/" element={<Navigate to="/admin" replace />} />
+        </Routes>
+      </BrowserRouter>
+    </ConfigProvider>
+  )
+}