rights system

frontend/src/components/admin/PermissionMatrixTab.tsx

@@ -188,10 +188,10 @@ function PermissionMatrixTab() {
     onError: () => showError('Fehler beim Aktualisieren des Wartungsmodus'),
   });
 
-  // ── Permission save (saves full group permissions) ──
+  // ── Permission save (bulk — single request for all affected groups) ──
   const permissionMutation = useMutation({
     mutationFn: (updates: { group: string; permissions: string[] }[]) =>
-      Promise.all(updates.map(u => permissionsApi.setGroupPermissions(u.group, u.permissions))),
+      permissionsApi.setBulkPermissions(updates),
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: ['admin-permission-matrix'] });
       queryClient.invalidateQueries({ queryKey: ['my-permissions'] });
@@ -576,16 +576,28 @@ function PermissionMatrixTab() {
                                       </TableCell>
                                       {nonAdminGroups.map(g => {
                                         const isGranted = (grants[g] || []).includes(perm.id);
+                                        // Check if this perm is required by another granted perm (dependency lock)
+                                        const groupGrants = grants[g] || [];
+                                        const dependents = REVERSE_DEPS[perm.id] || [];
+                                        const isRequiredByOther = isGranted && dependents.some(d => groupGrants.includes(d));
                                         return (
                                           <TableCell key={g} align="center" sx={{ minWidth: 120 }}>
-                                            <Checkbox
-                                              checked={isGranted}
-                                              onChange={() =>
-                                                handlePermissionToggle(g, perm.id, grants, groups)
-                                              }
-                                              disabled={permissionMutation.isPending}
-                                              size="small"
-                                            />
+                                            <Tooltip
+                                              title={isRequiredByOther ? 'Wird von anderen Berechtigungen benötigt' : ''}
+                                              placement="top"
+                                            >
+                                              <span>
+                                                <Checkbox
+                                                  checked={isGranted}
+                                                  onChange={() =>
+                                                    handlePermissionToggle(g, perm.id, grants, groups)
+                                                  }
+                                                  disabled={permissionMutation.isPending}
+                                                  size="small"
+                                                  sx={isRequiredByOther ? { color: 'warning.main', '&.Mui-checked': { color: 'warning.main' } } : undefined}
+                                                />
+                                              </span>
+                                            </Tooltip>
                                           </TableCell>
                                         );
                                       })}