Add CYD LVGL climate dashboard with DHT11 on GPIO22.

Include always-on UI, README, and a rule to commit and update docs after each change.

Co-authored-by: Cursor <cursoragent@cursor.com>

platformio.ini

@@ -0,0 +1,67 @@
+; CYD ESP32-2432S028R — LVGL 温湿度仪表盘
+; DHT11 DATA -> GPIO22
+
+[platformio]
+default_envs = cyd_28r
+
+[env]
+platform = espressif32@6.9.0
+board = esp32dev
+framework = arduino
+monitor_speed = 115200
+upload_speed = 921600
+board_build.partitions = min_spiffs.csv
+lib_deps =
+  lvgl/lvgl@9.2.2
+  bodmer/TFT_eSPI@2.5.43
+  https://github.com/PaulStoffregen/XPT2046_Touchscreen.git
+  beegee-tokyo/DHT sensor library for ESPx@^1.19
+extra_scripts = pre:scripts/exclude_lvgl_asm.py
+build_flags =
+  -D CORE_DEBUG_LEVEL=0
+  -D USER_SETUP_LOADED=1
+  -D USE_HSPI_PORT=1
+  -D ILI9341_2_DRIVER=1
+  -D TFT_WIDTH=240
+  -D TFT_HEIGHT=320
+  -D TFT_MISO=12
+  -D TFT_MOSI=13
+  -D TFT_SCLK=14
+  -D TFT_CS=15
+  -D TFT_DC=2
+  -D TFT_RST=-1
+  -D TFT_BL=21
+  -D TFT_BACKLIGHT_ON=HIGH
+  -D SPI_FREQUENCY=40000000
+  -D SPI_READ_FREQUENCY=20000000
+  -D LOAD_GLCD=1
+  -D LOAD_FONT2=0
+  -D LOAD_FONT4=0
+  -D LOAD_FONT6=0
+  -D LOAD_FONT7=0
+  -D LOAD_FONT8=0
+  -D LOAD_GFXFF=0
+  -D SMOOTH_FONT=0
+  -D TOUCH_CS=-1
+  -D LV_CONF_INCLUDE_SIMPLE=1
+  -I include
+
+; 标准 CYD 2.8" 电阻屏 (ILI9341)
+[env:cyd_28r]
+build_flags =
+  ${env.build_flags}
+
+; 颜色反相版本（若画面色偏/发白可改用此环境）
+[env:cyd_28r_inv]
+build_flags =
+  ${env.build_flags}
+  -D TFT_INVERSION_ON=1
+
+; USB-C 双口 / 7789 变体
+[env:cyd_28_st7789]
+build_flags =
+  ${env.build_flags}
+  -U ILI9341_2_DRIVER
+  -D ST7789_DRIVER=1
+  -D TFT_RGB_ORDER=TFT_BGR
+  -D TFT_INVERSION_ON=1