feat(admin): centralize tool & module settings in Werkzeuge tab with per-tool permissions, DB-backed config, connection tests, and cog-button navigation

frontend/src/services/toolConfig.ts

@@ -0,0 +1,18 @@
+import { api } from './api';
+import type { ToolConfig, ToolTestResult } from '../types/toolConfig.types';
+
+interface ApiResponse<T> {
+  success: boolean;
+  data: T;
+}
+
+export const toolConfigApi = {
+  get: (tool: string): Promise<ToolConfig> =>
+    api.get<ApiResponse<ToolConfig>>(`/api/admin/tools/config/${tool}`).then(r => r.data.data),
+
+  update: (tool: string, config: Partial<ToolConfig>): Promise<void> =>
+    api.put(`/api/admin/tools/config/${tool}`, config).then(() => {}),
+
+  test: (tool: string, config?: Partial<ToolConfig>): Promise<ToolTestResult> =>
+    api.post<ApiResponse<ToolTestResult>>(`/api/admin/tools/config/${tool}/test`, config ?? {}).then(r => r.data.data),
+};