Add CYD SGP30 air quality dashboard with flashable firmware.

LVGL dual-gauge UI for eCO2/TVOC on GPIO22/27, plus archived cyd_28r bins and one-click flash scripts.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
2026-10-18 20:56:46 +08:00
commit 334cdeeb97
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