add metrics tree to the context

https://www.linkedin.com/posts/dmitryustimov_agenticai-analytics-semanticlayer-activity-7484229236992454656-PsHX

After evals are shipped and we can measure it, would be interesting to add metrics tree to the context and see how it will change the resoning

```
Number of Successful Visits
├── Number of Visits
│ ├── Number of Active Ports (Total ports → Deployed → Activated → Active)
│ └── Number of Active Drivers (Total drivers → Activated → Active)
│ ├── New
│ ├── Resurrected
│ └── Retained
└── Visit Success Rate
├── First Attempt Success
└── Troubled Success
```