4.2Architecture

                    +------------------+
                    |   ORCHESTRATOR   |
                    |   (Coordinator)  |
                    +--------+---------+
                             |
              +--------------+--------------+
              |              |              |
        +-----+-----+  +-----+-----+  +-----+-----+
        |  Agent:   |  |  Agent:   |  |  Agent:   |
        |  UI Tests |  | API Tests |  | Perf Tests|
        +-----------+  +-----------+  +-----------+

The orchestrator:

1. Receives a feature specification or test plan
2. Analyzes it to determine which test types are needed
3. Delegates scenarios to specialist agents
4. Collects and merges results
5. Reports a unified test outcome