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webapp/src/app/core/services/client-cache.service.ts

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+import { Injectable, inject } from '@angular/core';
+import { Observable, of, catchError, map, shareReplay } from 'rxjs';
+import { ApiService } from './api.service';
+
+export interface ResolvedClient {
+  clientId: string;
+  clientName: string | null;
+  userId: string;
+  userName: string | null;
+  agentModel: string;
+  agentVersion: string;
+}
+
+@Injectable({
+  providedIn: 'root'
+})
+export class ClientCacheService {
+  private apiService = inject(ApiService);
+
+  private cache = new Map<string, Observable<ResolvedClient | null>>();
+
+  resolveClient(clientId: string): Observable<ResolvedClient | null> {
+    if (!this.cache.has(clientId)) {
+      const request$ = this.apiService.getClientPreview(clientId).pipe(
+        map(response => ({
+          clientId: response.client.client_id,
+          clientName: response.client.name,
+          userId: response.user.user_id,
+          userName: response.user.username,
+          agentModel: response.client.agent_model,
+          agentVersion: response.client.agent_version,
+        })),
+        catchError(() => of(null)),
+        shareReplay(1)
+      );
+      this.cache.set(clientId, request$);
+    }
+    return this.cache.get(clientId)!;
+  }
+
+  clearCache(): void {
+    this.cache.clear();
+  }
+}