Align 3.5C pins with CYD_PROJECT_GUIDE: TFT_BL=27, SGP30 SDA22/SCL21.

Leave 2.8 wiring unchanged; release GT911 INT after reset so SCL21 can share CN1.

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

firmware/export_from_build.ps1

@@ -23,11 +23,15 @@ if (-not $SkipBuild) {
 $src = Join-Path $root (".pio\build\" + $Env)
 if ($Env -eq "cyd_35r") {
   $dstName = "cyd_35r"
-  $boardLine = "board: ESP32-3248S035 (ST7796)"
+  $boardLine = "board: ESP32-3248S035 (ST7796 + GT911)"
+  $sgpLine = "sgp30: SDA=GPIO22 SCL=GPIO21"
+  $blLine = "tft_bl: GPIO27"
   $boardIdHint = "esp32-3248s035"
 } else {
   $dstName = "cyd_28r"
   $boardLine = "board: ESP32-2432S028R (ILI9341)"
+  $sgpLine = "sgp30: SDA=GPIO22 SCL=GPIO27"
+  $blLine = "tft_bl: GPIO21"
   $boardIdHint = "esp32-2432s028"
 }
 $dst = Join-Path $root ("firmware\" + $dstName)
@@ -54,6 +58,8 @@ $lines = @(
   "git: $git",
   "date: $date",
   $boardLine,
+  $sgpLine,
+  $blLine,
   "flash_size: 4MB",
   "offsets:",
   "  0x1000  bootloader.bin",
@@ -67,21 +73,5 @@ foreach ($h in $hashes) {
 }
 $lines | Set-Content -Encoding utf8 (Join-Path $dst "VERSION.txt")
 
-# Keep / refresh meta.json boardId for catalog filtering
-$metaPath = Join-Path $dst "meta.json"
-if (Test-Path $metaPath) {
-  try {
-    $meta = Get-Content $metaPath -Raw | ConvertFrom-Json
-    $meta.boardId = $boardIdHint
-    if ($Env -eq "cyd_35r" -and $meta.name -notmatch "3\.5") {
-      $meta.name = ($meta.name -replace "\s*$","") + " (3.5\")"
-    }
-    $meta | ConvertTo-Json -Depth 8 | Set-Content -Encoding utf8 $metaPath
-  } catch {
-    Write-Host "meta.json update skipped: $_"
-  }
-} elseif ($Env -eq "cyd_35r") {
-  Write-Host "Note: add firmware/cyd_35r/meta.json with boardId=$boardIdHint for the web catalog"
-}
 
 Write-Host "Exported -> $dst (env=$Env git=$git)"