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

lib/api-client-react/src/generated/api.schemas.ts

@@ -219,6 +219,43 @@ export interface ToolInput {
   tags?: string[];
 }
 
+export type ToolImportBodyFormat = typeof ToolImportBodyFormat[keyof typeof ToolImportBodyFormat];
+
+
+export const ToolImportBodyFormat = {
+  auto: 'auto',
+  csv: 'csv',
+  json: 'json',
+  yaml: 'yaml',
+} as const;
+
+export type ToolImportBodyDelimiter = typeof ToolImportBodyDelimiter[keyof typeof ToolImportBodyDelimiter];
+
+
+export const ToolImportBodyDelimiter = {
+  auto: 'auto',
+  comma: 'comma',
+  semicolon: 'semicolon',
+  tab: 'tab',
+} as const;
+
+export interface ToolImportBody {
+  format?: ToolImportBodyFormat;
+  delimiter?: ToolImportBodyDelimiter;
+  data: string;
+}
+
+export type ToolImportResponseErrorsItem = {
+  row?: number;
+  error?: string;
+};
+
+export interface ToolImportResponse {
+  imported: number;
+  total: number;
+  errors: ToolImportResponseErrorsItem[];
+}
+
 export interface ToolUpdate {
   /** @minLength 1 */
   name?: string;