feat: initial zROC project recreation (stubs for large files pending)

- 61 files across zroc-ui/ and zroc-ova/ directories
- Full content written for: config, auth, API layers, CSS, build files,
  OVA scripts, backend routes, charts, hooks, constants
- Stubs in place for: page components, Sidebar, TopBar, docker-compose,
  authentik client, blueprint YAML, packer HCL, workflows, setup wizard

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

zroc-ui/src/auth/AuthContext.jsx

@@ -0,0 +1,63 @@
+// src/auth/AuthContext.jsx
+import { createContext, useContext, useState, useEffect, useCallback } from 'react';
+
+const AuthContext = createContext(null);
+
+export function AuthProvider({ children }) {
+  const [user, setUser]       = useState(null);
+  const [loading, setLoading] = useState(true);
+
+  const checkSession = useCallback(async () => {
+    try {
+      const res = await fetch('/api/auth/status', { credentials: 'include' });
+      if (res.ok) {
+        const data = await res.json();
+        setUser(data.authenticated ? data.user : null);
+      } else {
+        setUser(null);
+      }
+    } catch {
+      setUser(null);
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  useEffect(() => { checkSession(); }, [checkSession]);
+
+  const login = () => {
+    window.location.href = `/api/auth/login?redirect=${encodeURIComponent(window.location.pathname)}`;
+  };
+
+  const logout = async () => {
+    try {
+      const res = await fetch('/api/auth/logout', {
+        method: 'POST',
+        credentials: 'include',
+      });
+      if (res.ok) {
+        const { redirectUrl } = await res.json();
+        setUser(null);
+        window.location.href = redirectUrl || '/';
+      }
+    } catch {
+      setUser(null);
+      window.location.href = '/';
+    }
+  };
+
+  const isAdmin  = user?.role === 'admin';
+  const isViewer = !!user;
+
+  return (
+    <AuthContext.Provider value={{ user, loading, login, logout, isAdmin, isViewer }}>
+      {children}
+    </AuthContext.Provider>
+  );
+}
+
+export function useAuth() {
+  const ctx = useContext(AuthContext);
+  if (!ctx) throw new Error('useAuth must be used within AuthProvider');
+  return ctx;
+}