feat: add frontend auth pages, app layout, and Supabase integration (Phase 1E)
- Auth pages: login (password + magic link), register (with firm name), callback - Supabase client setup: browser client, server client, middleware for session refresh - App layout: sidebar (Dashboard, Akten, Fristen, Termine, AI Analyse, Einstellungen), header with user info and tenant switcher - Shared: API client with auth headers, TypeScript types matching Go models, QueryClientProvider + Toaster providers - Dependencies: @supabase/supabase-js, @supabase/ssr, @tanstack/react-query, lucide-react, date-fns, sonner
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189
frontend/src/app/(auth)/login/page.tsx
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189
frontend/src/app/(auth)/login/page.tsx
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"use client";
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import { createClient } from "@/lib/supabase/client";
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import { useRouter } from "next/navigation";
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import { useState } from "react";
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export default function LoginPage() {
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const [email, setEmail] = useState("");
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const [password, setPassword] = useState("");
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const [mode, setMode] = useState<"password" | "magic">("password");
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const [loading, setLoading] = useState(false);
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const [error, setError] = useState<string | null>(null);
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const [magicSent, setMagicSent] = useState(false);
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const router = useRouter();
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const supabase = createClient();
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async function handlePasswordLogin(e: React.FormEvent) {
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e.preventDefault();
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setLoading(true);
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setError(null);
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const { error } = await supabase.auth.signInWithPassword({
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email,
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password,
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});
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if (error) {
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setError(error.message);
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setLoading(false);
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return;
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}
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router.push("/");
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router.refresh();
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}
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async function handleMagicLink(e: React.FormEvent) {
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e.preventDefault();
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setLoading(true);
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setError(null);
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const { error } = await supabase.auth.signInWithOtp({
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email,
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options: {
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emailRedirectTo: `${window.location.origin}/callback`,
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},
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});
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if (error) {
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setError(error.message);
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setLoading(false);
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return;
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}
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setMagicSent(true);
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setLoading(false);
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}
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if (magicSent) {
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return (
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<div className="flex min-h-screen items-center justify-center bg-neutral-50">
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<div className="w-full max-w-sm space-y-6 rounded-lg border border-neutral-200 bg-white p-8">
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<div className="text-center">
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<h1 className="text-lg font-semibold text-neutral-900">
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Link gesendet
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</h1>
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<p className="mt-2 text-sm text-neutral-500">
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Wir haben einen Login-Link an{" "}
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<span className="font-medium text-neutral-700">{email}</span>{" "}
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gesendet. Bitte pruefen Sie Ihren Posteingang.
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</p>
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</div>
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<button
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onClick={() => setMagicSent(false)}
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className="w-full text-center text-sm text-neutral-500 hover:text-neutral-700"
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>
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Zurueck zum Login
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</button>
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</div>
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</div>
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);
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}
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return (
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<div className="flex min-h-screen items-center justify-center bg-neutral-50">
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<div className="w-full max-w-sm space-y-6 rounded-lg border border-neutral-200 bg-white p-8">
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<div className="text-center">
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<h1 className="text-lg font-semibold text-neutral-900">
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KanzlAI
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</h1>
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<p className="mt-1 text-sm text-neutral-500">
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Melden Sie sich an
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</p>
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</div>
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<div className="flex rounded-md border border-neutral-200 bg-neutral-50 p-0.5">
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<button
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onClick={() => setMode("password")}
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className={`flex-1 rounded-md px-3 py-1.5 text-sm font-medium transition-colors ${
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mode === "password"
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? "bg-white text-neutral-900 shadow-sm"
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: "text-neutral-500 hover:text-neutral-700"
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}`}
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>
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Passwort
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</button>
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<button
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onClick={() => setMode("magic")}
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className={`flex-1 rounded-md px-3 py-1.5 text-sm font-medium transition-colors ${
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mode === "magic"
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? "bg-white text-neutral-900 shadow-sm"
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: "text-neutral-500 hover:text-neutral-700"
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}`}
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>
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Magic Link
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</button>
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</div>
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<form
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onSubmit={mode === "password" ? handlePasswordLogin : handleMagicLink}
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className="space-y-4"
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>
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<div>
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<label
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htmlFor="email"
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className="block text-sm font-medium text-neutral-700"
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>
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E-Mail
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</label>
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<input
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id="email"
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type="email"
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value={email}
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onChange={(e) => setEmail(e.target.value)}
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required
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className="mt-1 block w-full rounded-md border border-neutral-300 px-3 py-2 text-sm placeholder-neutral-400 focus:border-neutral-900 focus:outline-none focus:ring-1 focus:ring-neutral-900"
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placeholder="anwalt@kanzlei.de"
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/>
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</div>
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{mode === "password" && (
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<div>
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<label
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htmlFor="password"
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className="block text-sm font-medium text-neutral-700"
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>
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Passwort
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</label>
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<input
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id="password"
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type="password"
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value={password}
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onChange={(e) => setPassword(e.target.value)}
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required
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className="mt-1 block w-full rounded-md border border-neutral-300 px-3 py-2 text-sm placeholder-neutral-400 focus:border-neutral-900 focus:outline-none focus:ring-1 focus:ring-neutral-900"
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/>
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</div>
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)}
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{error && (
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<p className="text-sm text-red-600">{error}</p>
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)}
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<button
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type="submit"
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disabled={loading}
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className="w-full rounded-md bg-neutral-900 px-4 py-2 text-sm font-medium text-white hover:bg-neutral-800 focus:outline-none focus:ring-2 focus:ring-neutral-900 focus:ring-offset-2 disabled:opacity-50"
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>
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{loading
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? "..."
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: mode === "password"
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? "Anmelden"
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: "Link senden"}
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</button>
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</form>
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<p className="text-center text-sm text-neutral-500">
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Noch kein Konto?{" "}
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<a
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href="/register"
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className="font-medium text-neutral-900 hover:underline"
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>
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Registrieren
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</a>
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</p>
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</div>
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</div>
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);
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}
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