feat(desktop): UserKeySetup screen (PIN + optional recovery code)

apps/desktop/src/components/UserKeySetup.tsx

@@ -0,0 +1,93 @@
+import { useCallback, useState } from 'react';
+
+import { setupNewUserIdentity } from '../lib/userIdentity';
+import { PinInput } from './PinInput';
+import { ShieldIcon, SpinnerIcon } from './icons';
+
+interface Props { userId: string; onComplete: () => void }
+type Step = 'enter' | 'recovery';
+
+export function UserKeySetup({ userId, onComplete }: Props) {
+  const [pin, setPin] = useState('');
+  const [confirm, setConfirm] = useState('');
+  const [withRecovery, setWithRecovery] = useState(true);
+  const [busy, setBusy] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const [step, setStep] = useState<Step>('enter');
+  const [recoveryCode, setRecoveryCode] = useState<string | null>(null);
+
+  const submit = useCallback(async () => {
+    if (pin.length !== 6 || confirm.length !== 6) {
+      setError('PIN muss 6 Ziffern haben.'); return;
+    }
+    if (pin !== confirm) {
+      setError('PINs stimmen nicht überein.'); return;
+    }
+    setBusy(true); setError(null);
+    try {
+      const r = await setupNewUserIdentity({ userId, pin, withRecovery });
+      setRecoveryCode(r.recoveryCode);
+      if (withRecovery) setStep('recovery');
+      else onComplete();
+    } catch (err: unknown) {
+      setError(err instanceof Error ? err.message : String(err));
+    } finally { setBusy(false); }
+  }, [pin, confirm, withRecovery, userId, onComplete]);
+
+  if (step === 'recovery') {
+    return (
+      <div className="space-y-4 rounded-2xl border border-white/10 bg-ink-900/70 p-6 text-neutral-100">
+        <div className="flex items-center gap-2 text-amber-300">
+          <ShieldIcon className="h-5 w-5" />
+          <h2 className="text-lg font-semibold">Recovery-Code</h2>
+        </div>
+        <p className="text-sm text-neutral-300">
+          Speichere diesen Code an einem sicheren Ort (Passwortmanager, ausgedruckt).
+          Mit ihm kannst du deinen Account auch ohne PIN entsperren.
+        </p>
+        <div className="select-all rounded-lg bg-ink-800 p-4 text-center font-mono text-lg tracking-widest">
+          {recoveryCode}
+        </div>
+        <div className="flex gap-2">
+          <button type="button"
+            className="flex-1 rounded-lg border border-white/10 bg-ink-800 px-3 py-2 text-sm text-neutral-200 hover:bg-white/5"
+            onClick={onComplete}
+          >Überspringen</button>
+          <button type="button"
+            className="flex-1 rounded-lg bg-brand-500 px-3 py-2 text-sm font-semibold text-white hover:bg-brand-400"
+            onClick={onComplete}
+          >Habe ich gespeichert</button>
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <form
+      onSubmit={(e) => { e.preventDefault(); void submit(); }}
+      className="space-y-4 rounded-2xl border border-white/10 bg-ink-900/70 p-6 text-neutral-100"
+    >
+      <div>
+        <label className="mb-2 block text-xs font-medium uppercase tracking-wide text-neutral-400">PIN eingeben</label>
+        <PinInput value={pin} onChange={setPin} ariaLabel="PIN eingeben" autoFocus />
+      </div>
+      <div>
+        <label className="mb-2 block text-xs font-medium uppercase tracking-wide text-neutral-400">PIN bestätigen</label>
+        <PinInput value={confirm} onChange={setConfirm} ariaLabel="PIN bestätigen" />
+      </div>
+      <label className="flex items-center gap-2 text-xs text-neutral-300">
+        <input type="checkbox" checked={withRecovery} onChange={(e) => setWithRecovery(e.target.checked)} />
+        Recovery-Code erstellen (empfohlen)
+      </label>
+      {error && <p role="alert" className="text-sm text-rose-300">{error}</p>}
+      <button
+        type="submit"
+        disabled={busy}
+        className="inline-flex w-full items-center justify-center gap-2 rounded-lg bg-brand-500 px-4 py-3 text-sm font-semibold text-white hover:bg-brand-400 disabled:opacity-60"
+      >
+        {busy && <SpinnerIcon className="h-4 w-4" />}
+        Weiter
+      </button>
+    </form>
+  );
+}