Rename 2.8 firmware/env from bare cyd to cyd_28r.

Drop ambiguous firmware/cyd; PlatformIO env and export paths are size-explicit (cyd_28r / cyd_35r).

firmware/README.md

@@ -2,9 +2,11 @@
 
 | 目录 | 板子 |
 |------|------|
-| [`cyd/`](cyd/) | **2.8"** CYD ESP32-2432S028R（ILI9341） |
+| [`cyd_28r/`](cyd_28r/) | **2.8"** CYD ESP32-2432S028R（ILI9341） |
 | [`cyd_35r/`](cyd_35r/) | **3.5"** CYD ESP32-3248S035C（ST7796 + GT911） |
 
+**没有** `firmware/cyd/`——目录名必须带尺寸。
+
 功能：**本机/服务器信息面板**（USB 串口收 `SI|...`，屏上显示 CPU/GPU/RAM/DISK）  
 版本信息见各目录下 `VERSION.txt`。
 
@@ -16,9 +18,8 @@
 2. 执行：
 
 ```powershell
-cd firmware\cyd          # 3.5": firmware\cyd_35r
+cd firmware\cyd_28r      # 3.5": firmware\cyd_35r
 .\flash.ps1
-# 或指定端口
 .\flash.ps1 -Port COM3
 ```
 
@@ -45,11 +46,11 @@ esptool.py --chip esp32 --port COM3 --baud 921600 write_flash -z ^
 在仓库根目录：
 
 ```powershell
-.\firmware\export_from_build.ps1              # 2.8 -> firmware/cyd
-.\firmware\export_from_build.ps1 -Env cyd_35r # 3.5 -> firmware/cyd_35r
-.\firmware\export_from_build.ps1 -SkipBuild
+.\firmware\export_from_build.ps1 -Env cyd_28r   # 2.8 -> firmware/cyd_28r
+.\firmware\export_from_build.ps1 -Env cyd_35r   # 3.5 -> firmware/cyd_35r
+.\firmware\export_from_build.ps1 -Env cyd_28r -SkipBuild
 ```
 
-刷完后在 PC 上运行 `..\..\host\send_sysinfo.ps1` 推送本机信息。
+刷完后用 `..\..\host\run.bat` 或 `send_sysinfo.exe` 推送本机信息。
 
 导出固件后记得在仓库根目录 **本地 `git commit`**（见根 `README.md`「本地 git」；不 push，除非明确要求）。

firmware/cyd_28r/VERSION.txt

@@ -1,5 +1,5 @@
-name: CYD serverinfotest (cyd)
-git: f83df3f
+name: CYD serverinfotest (cyd_28r)
+git: 0c5281b
 date: 2026-10-27
 board: ESP32-2432S028R (ILI9341)
 flash_size: 4MB
@@ -11,5 +11,5 @@ offsets:
 sha256:
   bootloader.bin  3D234A7471F67B013686DABD4DEE7C1FA915C9928463616A94BC9297ACF1ABF8
   boot_app0.bin   F94C5D786A7A8FAB06AC5D10E33BF37711A6697636DC037559EA19CC410A17F0
-  firmware.bin    C37191D2A95FDA84053DDB2F6BF3EE42ADF1C7C1527495284DD071EB9E7B1863
+  firmware.bin    6FF88A9DFF291AD7EA016AF17A591CDDF83153E58E782751255CE7DF6D876952
   partitions.bin  148B959CBFF1C38AA8E1D5C0BA9D612C54997B945E56A63F41223EEF650653A1

firmware/cyd_28r/meta.json

@@ -2,7 +2,7 @@
   "boardId": "esp32-2432s028",
   "name": "CYD Server Info",
   "summary": "LVGL panel for host CPU / GPU / RAM / disk via USB serial",
-  "description": "Receives SI|... lines from host/send_sysinfo.ps1 and shows live bars for CPU, GPU, memory and system drive. No external GPIO peripherals.",
+  "description": "2.8 inch board package (cyd_28r). Receives SI|... from host agent; LVGL bars for CPU/GPU/RAM/disk. No external GPIO peripherals.",
   "tags": [
     "monitor",
     "host-info",

firmware/cyd_35r/VERSION.txt

@@ -1,5 +1,5 @@
 name: CYD serverinfotest (cyd_35r)
-git: f83df3f
+git: 0c5281b
 date: 2026-10-27
 board: ESP32-3248S035 (ST7796)
 flash_size: 4MB

firmware/export_from_build.ps1

@@ -1,12 +1,12 @@
 # Export firmware bins from PlatformIO build.
-# Default: 2.8" (cyd -> firmware/cyd)
-# 3.5":    .\firmware\export_from_build.ps1 -Env cyd_35r
-#          (only after: pio run -e cyd_35r)
+# 2.8":    .\firmware\export_from_build.ps1 -Env cyd_28r   -> firmware/cyd_28r
+# 3.5":    .\firmware\export_from_build.ps1 -Env cyd_35r   -> firmware/cyd_35r
+# No bare "cyd" directory — board size is always in the name.
 
 param(
   [switch]$SkipBuild,
-  [ValidateSet("cyd", "cyd_35r")]
-  [string]$Env = "cyd"
+  [ValidateSet("cyd_28r", "cyd_35r")]
+  [string]$Env = "cyd_28r"
 )
 
 $ErrorActionPreference = "Stop"
@@ -24,11 +24,9 @@ $src = Join-Path $root (".pio\build\" + $Env)
 if ($Env -eq "cyd_35r") {
   $dstName = "cyd_35r"
   $boardLine = "board: ESP32-3248S035 (ST7796)"
-  $boardIdHint = "esp32-3248s035"
 } else {
-  $dstName = "cyd"
+  $dstName = "cyd_28r"
   $boardLine = "board: ESP32-2432S028R (ILI9341)"
-  $boardIdHint = "esp32-2432s028"
 }
 $dst = Join-Path $root ("firmware\" + $dstName)
 New-Item -ItemType Directory -Force -Path $dst | Out-Null
@@ -67,5 +65,4 @@ foreach ($h in $hashes) {
 }
 $lines | Set-Content -Encoding utf8 (Join-Path $dst "VERSION.txt")
 
-
 Write-Host "Exported -> $dst (env=$Env git=$git)"