feat(auth): интегрировать SSO auth-portal

JWT на backend, handoff/callback на UI, RBAC mm:*, AUTH_* в compose.

Co-authored-by: Cursor <[email protected]>

components/auth-guard.tsx

@@ -0,0 +1,51 @@
+"use client"
+
+import { useEffect, useState, type ReactNode } from "react"
+import {
+  ensureAuthConfig,
+  getClaims,
+  getToken,
+  isAuthEnabled,
+  redirectToPortalLogin,
+  redirectToPortalLoginInteractive,
+} from "@/lib/auth"
+
+export function AuthGuard({ children }: { children: ReactNode }) {
+  const [ready, setReady] = useState(false)
+
+  useEffect(() => {
+    let cancelled = false
+    void (async () => {
+      await ensureAuthConfig()
+      if (cancelled) return
+      if (!isAuthEnabled()) {
+        setReady(true)
+        return
+      }
+      const claims = getClaims()
+      if (!getToken() || !claims) {
+        const ok = redirectToPortalLogin()
+        if (!ok) redirectToPortalLoginInteractive()
+        return
+      }
+      if (!claims.apps.includes("mm")) {
+        window.location.assign("/access-denied")
+        return
+      }
+      setReady(true)
+    })()
+    return () => {
+      cancelled = true
+    }
+  }, [])
+
+  if (!ready) {
+    return (
+      <div className="text-muted-foreground flex min-h-svh items-center justify-center p-6 text-sm">
+        Проверка сессии…
+      </div>
+    )
+  }
+
+  return children
+}