fix: Ozonetel token 10min cache + invalidate on 401 + force re-login on already logged in

- Token cache reduced from 55min to 10min (Ozonetel expires in ~15min)
- All API methods invalidate cached token on 401
- loginAgent forces logout + re-login when "already logged in"
  to refresh SIP phone mapping

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/ozonetel/ozonetel-agent.service.ts

@@ -84,10 +84,32 @@ export class OzonetelAgentService {
 
             const data = response.data;
 
-            // "already logged in" is not a real error — treat as success
+            // "already logged in" — force logout + re-login to refresh SIP phone mapping
             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 ${params.agentId} already logged in — forcing logout + re-login`);
+                try {
+                    await this.logoutAgent({ agentId: params.agentId, password: params.password });
+                    const retryResponse = await axios.post(
+                        url,
+                        new URLSearchParams({
+                            userName: this.accountId,
+                            apiKey: this.apiKey,
+                            phoneNumber: params.phoneNumber,
+                            action: 'login',
+                            mode: params.mode ?? 'blended',
+                            state: 'Ready',
+                        }).toString(),
+                        {
+                            headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+                            auth: { username: params.agentId, password: params.password },
+                        },
+                    );
+                    this.logger.log(`Agent re-login response: ${JSON.stringify(retryResponse.data)}`);
+                    return retryResponse.data;
+                } catch (retryErr: any) {
+                    this.logger.error(`Agent re-login failed: ${retryErr.message}`);
+                    return { status: 'success', message: 'Re-login attempted' };
+                }
             }
 
             this.logger.log(`Agent login response: ${JSON.stringify(data)}`);