20260929-0235-air-hub-entry-adds-efr32mg21 Add EFR32MG21 to the entry Air Hub and keep its ESP32-C6 and 433 MHz link

• status: completed
• priority: P1
• owner: claude/session-20260928-2344
• createdAt: 2026-09-29 02:35

Description

Air Hub spec R0.9 gives the entry Air Hub (AH-19) no dedicated 2.4 GHz radio: the ESP32-C6 carries Wi-Fi, BLE for Air, configuration and CAN. After comparing variants without the 433 MHz link and without the C6, the owner chose to keep the original entry build and add EFR32MG21 ("保留原始的增加EFR32MG21吧").

Acceptance criteria:

1. Spec, design, guide, brief, index and evaluation describe the entry Air Hub as RV1106G3 (alternate SSD202D) + ESP32-C6 (Wi-Fi uplink, configuration, CAN) + EFR32MG21 (BLE for Air, Zigbee / Thread by image) + CMT2300A, with the new BOM against its cost cap.
2. Requirements that depended on the C6 carrying Air's BLE (GW-02 note, GW-04, GW-07 scope, the Air-clause scope line, compliance) are updated; product plan, line spec and compliance matrix follow.
3. Quality gate passes: bun run docs:lint && bun run docs:build && git diff --check.

ActiveForm

Adding EFR32MG21 to the entry Air Hub

Dependencies

• blocked by: (none)
• blocks: (none)

Notes

Plan: 20260929-0235-air-hub-entry-adds-efr32mg21

• complete: Lint 229 pages 0 findings; docs:build and git diff --check pass.