fix: treat 'already logged in' as success in Ozonetel agent login

src/ozonetel/ozonetel-agent.service.ts

@@ -47,8 +47,16 @@ export class OzonetelAgentService {
                 },
             );
 
-            this.logger.log(`Agent login response: ${JSON.stringify(response.data)}`);
-            return response.data;
+            const data = response.data;
+
+            // "already logged in" is not a real error — treat as success
+            if (data.status === 'error' && data.message?.includes('already logged in')) {
+                this.logger.log(`Agent ${params.agentId} already logged in — treating as success`);
+                return { status: 'success', message: data.message };
+            }
+
+            this.logger.log(`Agent login response: ${JSON.stringify(data)}`);
+            return data;
         } catch (error: any) {
             this.logger.error(`Agent login failed: ${error.message}`);
             throw error;