Benutzer bearbeiten (Name/E-Mail) + Kern-Einstellungen nur Superadmin

Nachschärfung der Benutzer-/Rollenverwaltung auf Basis des Feedbacks.

- Nutzer editierbar: Name & E-Mail (eindeutig je Mandant) je Nutzer in beiden
  Konsolen — updateTenantUser (Plattform) / updateUser (Tenant), inline-Formular
  in platform-tenant-users.tsx und tenant-users-manager.tsx. Rollen/Status/Reset
  bestanden bereits (browser-verifiziert: Name/E-Mail, Rollen, Deaktivieren, Reset).
- Kern-Einstellungen ausschließlich Superadmin: TISAX-/Schutzbedarf-Tiefe wandert
  in die Admin-Konsole (setTenantTisaxLevel, AL2/AL3 in /admin/[id]); aus den
  Tenant-Einstellungen entfernt (nur noch Read-only-Anzeige). updateTenantSettings
  fasst tisaxLevel/Schutzbedarf-Flags nicht mehr an. Module waren bereits Superadmin.
- Tenant-Einstellungen: „Benutzer & Rollen"-Bereich verlinkt und sichtbar
  (user:manage/role:manage) — Verwaltung unter /settings/users.

Browser-verifiziert: Admin-Konsole editiert Name/E-Mail/Rollen/Status/Passwort und
schaltet TISAX AL3; /settings zeigt Benutzer-Bereich + TISAX read-only;
/settings/users listet Nutzer mit Editierfeldern. tsc + lint + build + Guard grün.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/(app)/settings/page.tsx

@@ -104,14 +104,11 @@ export default async function SettingsPage() {
             </div>
           </div>
 
-          {/* Schutzbedarf / TISAX */}
+          {/* Schutzbedarf / TISAX (Kern-Einstellung: nur Betreiber) */}
           <div className="shadow-card rounded-xl border bg-card p-5">
-            <p className="mb-3 font-heading text-sm font-semibold">Schutzbedarf / TISAX-Level</p>
-            <select name="tisaxLevel" defaultValue={s?.tisaxLevel ?? "AL2"} className={inputCls}>
-              <option value="AL2">AL2 — MUSS · SOLL · HOCH</option>
-              <option value="AL3">AL3 — zusätzlich SEHR HOCH</option>
-            </select>
-            <p className="mt-2 text-[11px] text-muted-foreground">Steuert die Schutzbedarf-Flags des Richtlinienmoduls (global; Override je Richtlinie im Editor).</p>
+            <p className="mb-1 font-heading text-sm font-semibold">Schutzbedarf / TISAX-Tiefe</p>
+            <p className="text-sm">Aktuell: <span className="font-semibold">{s?.tisaxLevel ?? "AL2"}</span></p>
+            <p className="mt-2 text-[11px] text-muted-foreground">Diese Kern-Einstellung wird vom Plattform-Betreiber gesteuert und ist hier nicht änderbar.</p>
           </div>
 
           <Button type="submit" className="w-full justify-center">Speichern</Button>

src/app/(platform)/admin/[id]/page.tsx

@@ -5,7 +5,7 @@ import { prisma } from "@/server/db";
 import { Button } from "@/components/ui/button";
 import { PageHead, Pill } from "@/components/mockup-ui";
 import { MODULES } from "@/lib/modules";
-import { setTenantStatus, toggleTenantModule } from "@/server/actions/admin";
+import { setTenantStatus, toggleTenantModule, setTenantTisaxLevel } from "@/server/actions/admin";
 import { PlatformTenantUsers } from "@/components/platform-tenant-users";
 
 const STATUS_TONE: Record<string, "ok" | "warn" | "mut"> = { ACTIVE: "ok", SUSPENDED: "warn", ARCHIVED: "mut" };
@@ -93,6 +93,20 @@ export default async function AdminTenantPage({ params }: { params: Promise<{ id
             <p className="mt-3 text-[11px] text-muted-foreground">Löschung/Datenexport (DSGVO) und Retention folgen in Phase 2.</p>
           </div>
 
+          {/* Kern-Einstellung: Schutzbedarf / TISAX-Tiefe (nur Superadmin) */}
+          <div className="shadow-card rounded-xl border bg-card p-5">
+            <p className="mb-1 font-heading text-sm font-semibold">Schutzbedarf / TISAX-Tiefe</p>
+            <p className="mb-3 text-[12px] text-muted-foreground">Steuert die Schutzbedarf-Flags des Richtlinienmoduls. Aktuell: {tenant.settings?.tisaxLevel ?? "AL2"}.</p>
+            <div className="space-y-2">
+              <form action={setTenantTisaxLevel.bind(null, tenant.id, "AL2")}>
+                <Button type="submit" variant={(tenant.settings?.tisaxLevel ?? "AL2") === "AL2" ? "secondary" : "outline"} size="sm" className="w-full justify-center" disabled={(tenant.settings?.tisaxLevel ?? "AL2") === "AL2"}>AL2 — MUSS · SOLL · HOCH</Button>
+              </form>
+              <form action={setTenantTisaxLevel.bind(null, tenant.id, "AL3")}>
+                <Button type="submit" variant={tenant.settings?.tisaxLevel === "AL3" ? "secondary" : "outline"} size="sm" className="w-full justify-center" disabled={tenant.settings?.tisaxLevel === "AL3"}>AL3 — zusätzlich SEHR HOCH</Button>
+              </form>
+            </div>
+          </div>
+
           {/* Nutzer-Kurzinfo */}
           <div className="shadow-card rounded-xl border bg-card p-5">
             <p className="mb-1 font-heading text-sm font-semibold">Benutzer</p>

src/components/platform-tenant-users.tsx

@@ -2,8 +2,8 @@
 
 import { useActionState } from "react";
 import {
-  createTenantUser, resetTenantUserPassword, setTenantUserStatus, setTenantUserRoles,
-  type CreateUserState, type ResetPwState,
+  createTenantUser, updateTenantUser, resetTenantUserPassword, setTenantUserStatus, setTenantUserRoles,
+  type CreateUserState, type ResetPwState, type EditUserState,
 } from "@/server/actions/platform-users";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
@@ -15,6 +15,7 @@ export interface ManagedUser { id: string; name: string; email: string; status:
 
 const createInit: CreateUserState = { status: "idle" };
 const resetInit: ResetPwState = { status: "idle" };
+const editInit: EditUserState = { status: "idle" };
 
 function OneTimeSecret({ label, value }: { label: string; value: string }) {
   return (
@@ -88,15 +89,31 @@ function ResetPasswordButton({ tenantId, userId }: { tenantId: string; userId: s
   );
 }
 
+function EditUserForm({ tenantId, user }: { tenantId: string; user: ManagedUser }) {
+  const [state, action, pending] = useActionState(updateTenantUser.bind(null, tenantId, user.id), editInit);
+  return (
+    <form action={action} className="flex flex-wrap items-end gap-2">
+      <div className="min-w-40 flex-1">
+        <Label htmlFor={`en-${user.id}`} className="text-[11px] text-muted-foreground">Name</Label>
+        <Input id={`en-${user.id}`} name="name" defaultValue={user.name} className="mt-1 h-8" />
+      </div>
+      <div className="min-w-52 flex-1">
+        <Label htmlFor={`ee-${user.id}`} className="text-[11px] text-muted-foreground">E-Mail</Label>
+        <Input id={`ee-${user.id}`} name="email" type="email" defaultValue={user.email} className="mt-1 h-8" />
+      </div>
+      <Button type="submit" variant="outline" size="sm" disabled={pending}>{pending ? "…" : "Speichern"}</Button>
+      {state.status === "ok" && <span className="text-[11px] text-[var(--ok)]">Gespeichert</span>}
+      {state.status === "error" && <span className="text-[11px] text-[var(--risk)]">{state.message}</span>}
+    </form>
+  );
+}
+
 function UserRow({ tenantId, user, roles }: { tenantId: string; user: ManagedUser; roles: RoleOption[] }) {
   const active = user.status === "ACTIVE";
   return (
     <div className="rounded-xl border bg-card p-4">
       <div className="flex flex-wrap items-start justify-between gap-3">
-        <div>
-          <p className="font-medium">{user.name}</p>
-          <p className="text-[12px] text-muted-foreground">{user.email}</p>
-        </div>
+        <div className="flex-1"><EditUserForm tenantId={tenantId} user={user} /></div>
         <Pill tone={active ? "ok" : "mut"}>{active ? "Aktiv" : "Deaktiviert"}</Pill>
       </div>
 

src/components/tenant-users-manager.tsx

@@ -2,8 +2,8 @@
 
 import { useActionState } from "react";
 import {
-  createUser, resetUserPassword, setUserStatus, setUserRoles,
-  type CreateUserState, type ResetPwState,
+  createUser, updateUser, resetUserPassword, setUserStatus, setUserRoles,
+  type CreateUserState, type ResetPwState, type EditUserState,
 } from "@/server/actions/tenant-users";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
@@ -15,6 +15,7 @@ export interface ManagedUser { id: string; name: string; email: string; status:
 
 const createInit: CreateUserState = { status: "idle" };
 const resetInit: ResetPwState = { status: "idle" };
+const editInit: EditUserState = { status: "idle" };
 
 function OneTimeSecret({ label, value }: { label: string; value: string }) {
   return (
@@ -86,15 +87,31 @@ function ResetPasswordButton({ userId }: { userId: string }) {
   );
 }
 
+function EditUserForm({ user }: { user: ManagedUser }) {
+  const [state, action, pending] = useActionState(updateUser.bind(null, user.id), editInit);
+  return (
+    <form action={action} className="flex flex-wrap items-end gap-2">
+      <div className="min-w-40 flex-1">
+        <Label htmlFor={`ten-${user.id}`} className="text-[11px] text-muted-foreground">Name {user.isSelf && <span>(Sie)</span>}</Label>
+        <Input id={`ten-${user.id}`} name="name" defaultValue={user.name} className="mt-1 h-8" />
+      </div>
+      <div className="min-w-52 flex-1">
+        <Label htmlFor={`tee-${user.id}`} className="text-[11px] text-muted-foreground">E-Mail</Label>
+        <Input id={`tee-${user.id}`} name="email" type="email" defaultValue={user.email} className="mt-1 h-8" />
+      </div>
+      <Button type="submit" variant="outline" size="sm" disabled={pending}>{pending ? "…" : "Speichern"}</Button>
+      {state.status === "ok" && <span className="text-[11px] text-[var(--ok)]">Gespeichert</span>}
+      {state.status === "error" && <span className="text-[11px] text-[var(--risk)]">{state.message}</span>}
+    </form>
+  );
+}
+
 function UserRow({ user, roles }: { user: ManagedUser; roles: RoleOption[] }) {
   const active = user.status === "ACTIVE";
   return (
     <div className="rounded-xl border bg-card p-4">
       <div className="flex flex-wrap items-start justify-between gap-3">
-        <div>
-          <p className="font-medium">{user.name} {user.isSelf && <span className="text-[11px] text-muted-foreground">(Sie)</span>}</p>
-          <p className="text-[12px] text-muted-foreground">{user.email}</p>
-        </div>
+        <div className="flex-1"><EditUserForm user={user} /></div>
         <Pill tone={active ? "ok" : "mut"}>{active ? "Aktiv" : "Deaktiviert"}</Pill>
       </div>
 

src/server/actions/admin.ts

@@ -5,7 +5,7 @@ import { revalidatePath } from "next/cache";
 import { redirect } from "next/navigation";
 import { z } from "zod";
 import { platformAuth } from "@/server/platform-auth";
-import { prisma } from "@/server/db";
+import { prisma, dbForTenant } from "@/server/db";
 import { provisionTenant } from "@/server/provision";
 
 /** Nur Plattform-Admins über die getrennte Plattform-Session (kein Mandantenkontext). */
@@ -57,6 +57,20 @@ export async function setTenantStatus(tenantId: string, status: "ACTIVE" | "SUSP
   revalidatePath(`/admin/${tenantId}`);
 }
 
+/** Kern-Einstellung (nur Superadmin): TISAX-/Schutzbedarf-Tiefe des Mandanten. */
+export async function setTenantTisaxLevel(tenantId: string, level: "AL2" | "AL3") {
+  const session = await requirePlatformAdmin();
+  const db = dbForTenant(tenantId);
+  await db.tenantSettings.update({ where: { tenantId }, data: { tisaxLevel: level } });
+  // Schutzbedarf-Flags des Richtlinienmoduls: HIGH stets an, VERY_HIGH nur bei AL3.
+  await db.policyVariable.updateMany({ where: { key: "FLAG_HIGH_PROTECTION" }, data: { value: "true" } });
+  await db.policyVariable.updateMany({ where: { key: "FLAG_VERY_HIGH_PROTECTION" }, data: { value: level === "AL3" ? "true" : "false" } });
+  await prisma.auditLog.create({
+    data: { tenantId, scope: "platform", actorId: session.user.id, action: "update", entity: "tisax_level", entityId: tenantId, after: { level } },
+  });
+  revalidatePath(`/admin/${tenantId}`);
+}
+
 export async function toggleTenantModule(tenantId: string, moduleKey: string, enabled: boolean) {
   const session = await requirePlatformAdmin();
   await prisma.tenantModule.upsert({

src/server/actions/platform-users.ts

@@ -29,6 +29,11 @@ export type ResetPwState =
   | { status: "error"; message: string }
   | { status: "done"; generatedPassword: string };
 
+export type EditUserState =
+  | { status: "idle" }
+  | { status: "error"; message: string }
+  | { status: "ok" };
+
 /** Zählt aktive Nutzer mit Mandanten-Admin-Rolle (Lockout-Schutz). */
 async function countActiveTenantAdmins(db: TenantDb): Promise<number> {
   return db.user.count({
@@ -90,6 +95,27 @@ export async function createTenantUser(tenantId: string, _prev: CreateUserState,
   return { status: "done", email: email.data, generatedPassword: generated };
 }
 
+/** Stammdaten (Name, E-Mail) eines Nutzers ändern; E-Mail bleibt je Mandant eindeutig. */
+export async function updateTenantUser(tenantId: string, userId: string, _prev: EditUserState, formData: FormData): Promise<EditUserState> {
+  const session = await requirePlatformSession();
+  const db = dbForTenant(tenantId);
+  const user = await db.user.findUnique({ where: { id: userId } });
+  if (!user) return { status: "error", message: "Nutzer nicht gefunden." };
+
+  const name = String(formData.get("name") ?? "").trim();
+  const email = emailSchema.safeParse(String(formData.get("email") ?? "").trim().toLowerCase());
+  if (!name) return { status: "error", message: "Bitte einen Namen angeben." };
+  if (!email.success) return { status: "error", message: "Bitte eine gültige E-Mail-Adresse angeben." };
+  if (email.data !== user.email && (await db.user.findFirst({ where: { email: email.data, id: { not: userId } } }))) {
+    return { status: "error", message: "Diese E-Mail ist in diesem Mandanten bereits vergeben." };
+  }
+
+  await db.user.update({ where: { id: userId }, data: { name, email: email.data } });
+  await writePlatformAudit({ actorId: session.user.id, action: "update", entity: "user", entityId: userId, after: { tenantId, name, email: email.data } });
+  revalidatePath(`/admin/${tenantId}`);
+  return { status: "ok" };
+}
+
 /** Passwort zurücksetzen: neues Einmal-Passwort + erzwungener Wechsel. */
 // eslint-disable-next-line @typescript-eslint/no-unused-vars -- Signatur von useActionState erzwungen
 export async function resetTenantUserPassword(tenantId: string, userId: string, _prev: ResetPwState, _formData: FormData): Promise<ResetPwState> {

src/server/actions/tenant-settings.ts

@@ -18,8 +18,9 @@ export async function updateTenantSettings(formData: FormData) {
   const db = dbForTenant(tenantId);
 
   const orgName = z.string().trim().min(1).parse(formData.get("orgName"));
-  const tisaxLevel = str(formData.get("tisaxLevel")) === "AL3" ? "AL3" : "AL2";
 
+  // TISAX-/Schutzbedarf-Tiefe ist eine Kern-Einstellung und wird ausschließlich vom
+  // Superadmin (Admin-Konsole) gesteuert — hier bewusst nicht anfassen.
   const data = {
     orgName,
     orgShort: str(formData.get("orgShort")) || null,
@@ -35,7 +36,6 @@ export async function updateTenantSettings(formData: FormData) {
     accent: str(formData.get("accent")) || null,
     locale: str(formData.get("locale")) || "de",
     timezone: str(formData.get("timezone")) || "Europe/Berlin",
-    tisaxLevel,
   };
 
   await db.tenantSettings.upsert({
@@ -46,11 +46,8 @@ export async function updateTenantSettings(formData: FormData) {
 
   // Stammdaten → ISMS-Template-Variablen (eine Pflegestelle)
   await syncPolicyVariablesFromSettings(prisma, tenantId, data);
-  // TISAX-Level steuert die Schutzbedarf-Flags des Richtlinienmoduls
-  await prisma.policyVariable.updateMany({ where: { tenantId, key: "FLAG_HIGH_PROTECTION" }, data: { value: "true" } });
-  await prisma.policyVariable.updateMany({ where: { tenantId, key: "FLAG_VERY_HIGH_PROTECTION" }, data: { value: tisaxLevel === "AL3" ? "true" : "false" } });
 
-  await writeAuditLog({ tenantId, actorId: session.user.id, action: "update", entity: "tenant_settings", after: { orgName, tisaxLevel } });
+  await writeAuditLog({ tenantId, actorId: session.user.id, action: "update", entity: "tenant_settings", after: { orgName } });
   revalidatePath("/settings");
   revalidatePath("/policies");
 }

src/server/actions/tenant-users.ts

@@ -30,6 +30,11 @@ export type ResetPwState =
   | { status: "error"; message: string }
   | { status: "done"; generatedPassword: string };
 
+export type EditUserState =
+  | { status: "idle" }
+  | { status: "error"; message: string }
+  | { status: "ok" };
+
 async function ctx(permission: "user:manage" | "role:manage") {
   const session = await requireSession();
   requirePermission(session, permission);
@@ -88,6 +93,26 @@ export async function createUser(_prev: CreateUserState, formData: FormData): Pr
   return { status: "done", email: email.data, generatedPassword: generated };
 }
 
+/** Stammdaten (Name, E-Mail) eines Nutzers ändern; E-Mail bleibt je Mandant eindeutig. */
+export async function updateUser(userId: string, _prev: EditUserState, formData: FormData): Promise<EditUserState> {
+  const { session, tenantId, db } = await ctx("user:manage");
+  const user = await db.user.findUnique({ where: { id: userId } });
+  if (!user) return { status: "error", message: "Nutzer nicht gefunden." };
+
+  const name = String(formData.get("name") ?? "").trim();
+  const email = emailSchema.safeParse(String(formData.get("email") ?? "").trim().toLowerCase());
+  if (!name) return { status: "error", message: "Bitte einen Namen angeben." };
+  if (!email.success) return { status: "error", message: "Bitte eine gültige E-Mail-Adresse angeben." };
+  if (email.data !== user.email && (await db.user.findFirst({ where: { email: email.data, id: { not: userId } } }))) {
+    return { status: "error", message: "Diese E-Mail ist bereits vergeben." };
+  }
+
+  await db.user.update({ where: { id: userId }, data: { name, email: email.data } });
+  await writeAuditLog({ tenantId, actorId: session.user.id, action: "update", entity: "user", entityId: userId, after: { name, email: email.data } });
+  revalidatePath("/settings/users");
+  return { status: "ok" };
+}
+
 // eslint-disable-next-line @typescript-eslint/no-unused-vars -- Signatur von useActionState erzwungen
 export async function resetUserPassword(userId: string, _prev: ResetPwState, _formData: FormData): Promise<ResetPwState> {
   const { session, tenantId, db } = await ctx("user:manage");