init: HejYou Language Learning App (React + Vite)

React SPA with Vite, Directus backend, canvas-confetti.
Includes Dockerfile (multi-stage Node → nginx) for Coolify deployment.

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

src/context/AuthContext.jsx

@@ -0,0 +1,29 @@
+import { createContext, useContext, useState, useEffect } from 'react'
+import { getMe } from '../api/directus'
+
+const AuthContext = createContext(null)
+
+export function AuthProvider({ children }) {
+  const [token, setToken] = useState(() => localStorage.getItem('hejyou_token'))
+  const [user, setUser] = useState(null)
+  const [loading, setLoading] = useState(true)
+
+  useEffect(() => {
+    if (!token) { setLoading(false); return }
+    getMe(token)
+      .then(setUser)
+      .catch(() => { localStorage.removeItem('hejyou_token'); setToken(null) })
+      .finally(() => setLoading(false))
+  }, [token])
+
+  const saveToken = (t) => { localStorage.setItem('hejyou_token', t); setToken(t) }
+  const logout = () => { localStorage.removeItem('hejyou_token'); setToken(null); setUser(null) }
+
+  return (
+    <AuthContext.Provider value={{ token, user, setUser, saveToken, logout, loading }}>
+      {children}
+    </AuthContext.Provider>
+  )
+}
+
+export const useAuth = () => useContext(AuthContext)