I established the high-level architecture: USB‑C 5 V sink, reverse/OVP/UVLO/OCP protection, efficient 3.3 V buck rail, certified low-power Wi‑Fi/BLE 5.x module, and digital temperature/humidity sensor.
No schematic components or nets have been added yet, and I couldn’t inspect the attached file because no ACUs are currently available. Remaining work is to review the attachment, finalize part selection and power budget, capture the schematic, then run ERC and design verification.