feat(import): bulk tool import (CSV/JSON/YAML) for admins; NetBox-style help button

- Add POST /admin/tools/import with format auto-detect, CSV delimiters
  (comma/semicolon/tab), per-row validation via CreateToolBody, bulk insert,
  audit log entries per imported tool; gated by new 'tool-import' feature
  flag (premium/enterprise; admins always pass)
- Add tool-import-dialog UI (format tabs, delimiter select, textarea, file
  upload, result/error list) behind hasFeature('tool-import')
- Replace FieldHelp question marks and bare GuideHelp links with a NetBox-style
  'Hilfe/Help' outline button (HelpCircle + text) in form headers only
- Sync locales to 482 keys per language (de/en), update handbook docs
  (administration import section, index/plaene feature tables), regenerate
  API client + zod schemas, add yaml dependency

artifacts/toolrate/src/pages/redundancy.tsx

@@ -1,7 +1,6 @@
 import { useState, useEffect } from "react";
 import { useTranslation } from "react-i18next";
 import { Layout } from "@/components/layout";
-import { GuideHelp } from "@/components/guide-help";
 import { Card, CardContent } from "@/components/ui/card";
 import { Badge } from "@/components/ui/badge";
 import { Button } from "@/components/ui/button";
@@ -47,10 +46,7 @@ export default function RedundancyPage() {
       <div className="space-y-6">
         <div className="flex items-center gap-3">
           <AlertTriangle className="w-6 h-6 text-amber-500" />
-          <h1 className="text-3xl font-bold flex items-center gap-2">
-            {t("redundancy.title")}
-            <GuideHelp guide="redundanz" label={t("redundancy.title")} />
-          </h1>
+          <h1 className="text-3xl font-bold">{t("redundancy.title")}</h1>
         </div>
         <p className="text-muted-foreground">
           {t("redundancy.subtitle")}