Initial commit – TimeMaster Zeiterfassung & HR-Tool

Stand: agent-06 (Audit-Log), agent-05 (Krankmeldung), agent-07 Phase 1 (Personalnummer),
Busylight-Pull-Integration, TOTP/2FA, Abwesenheiten, Zeiterfassung, Kiosk-Grundgerüst.
Migrations 0001–0023 deployed auf 192.168.1.137 + .164.

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

frontend/src/context/AuthContext.tsx

@@ -0,0 +1,46 @@
+import { createContext, useContext, useState, ReactNode } from 'react'
+import { useNavigate } from 'react-router-dom'
+import { api } from '../api/client'
+
+interface AuthContextType {
+  token: string | null
+  login: (email: string, password: string) => Promise<void>
+  logout: () => void
+}
+
+const AuthContext = createContext<AuthContextType>(null!)
+
+export function AuthProvider({ children }: { children: ReactNode }) {
+  const [token, setToken] = useState<string | null>(
+    () => localStorage.getItem('access_token'),
+  )
+  const navigate = useNavigate()
+
+  async function login(email: string, password: string) {
+    const data = await api.post<{ access_token: string; refresh_token: string }>(
+      '/auth/login',
+      { email, password },
+    )
+    localStorage.setItem('access_token', data.access_token)
+    localStorage.setItem('refresh_token', data.refresh_token)
+    setToken(data.access_token)
+    navigate('/dashboard')
+  }
+
+  function logout() {
+    localStorage.removeItem('access_token')
+    localStorage.removeItem('refresh_token')
+    setToken(null)
+    navigate('/login')
+  }
+
+  return (
+    <AuthContext.Provider value={{ token, login, logout }}>
+      {children}
+    </AuthContext.Provider>
+  )
+}
+
+export function useAuth() {
+  return useContext(AuthContext)
+}