feat(firmware): support rocking-horse workbench delivery

tools/build_seat_firmware.ps1

@@ -11,10 +11,15 @@ param(
     [ValidateSet(0, 1)]
     [int]$Ventilation = 1,
     [ValidateSet(0, 1)]
-    [int]$Heating = 1
+    [int]$Heating = 1,
+    [ValidateSet(0, 1)]
+    [int]$RockingHorse = $PositionControl
 )
 
 $ErrorActionPreference = 'Stop'
+if ($RockingHorse -eq 1 -and $PositionControl -eq 0) {
+    throw 'Rocking-horse mode requires -PositionControl 1.'
+}
 $repositoryCandidate = if ($RepositoryRoot) {
     $RepositoryRoot
 } else {
@@ -142,23 +147,29 @@ try {
     New-Item -ItemType Junction -Path (Join-Path $stagingRootFull 'tviibh8m') -Target $vendorDevice | Out-Null
 
     $featureProfilePath = Join-Path $stagingProjectRoot 'Config\seat_feature_profile.h'
-    $featureProfile = @"
-#ifndef SEAT_FEATURE_PROFILE_H
-#define SEAT_FEATURE_PROFILE_H
-
-/* Generated by tools/build_seat_firmware.ps1 for this build only. */
-#define SEAT_FEATURE_POSITION_CONTROL ($PositionControl)
-#define SEAT_FEATURE_VENTILATION      ($Ventilation)
-#define SEAT_FEATURE_HEATING          ($Heating)
-
-#endif /* SEAT_FEATURE_PROFILE_H */
-"@
+    # Preserve dependency checks and derived switches (including THERMAL).
+    $featureProfile = [System.IO.File]::ReadAllText($featureProfilePath)
+    $featureValues = [ordered]@{
+        SEAT_FEATURE_POSITION_CONTROL = $PositionControl
+        SEAT_FEATURE_VENTILATION = $Ventilation
+        SEAT_FEATURE_HEATING = $Heating
+        SEAT_FEATURE_ROCKING_HORSE = $RockingHorse
+    }
+    foreach ($entry in $featureValues.GetEnumerator()) {
+        $pattern = '(?m)^#define\s+' + $entry.Key + '\s+\([01]\)'
+        if (-not [regex]::IsMatch($featureProfile, $pattern)) {
+            throw "Firmware feature switch is missing: $($entry.Key)"
+        }
+        $featureProfile = [regex]::Replace(
+            $featureProfile, $pattern, "#define $($entry.Key) ($($entry.Value))"
+        )
+    }
     [System.IO.File]::WriteAllText(
         $featureProfilePath,
         $featureProfile,
         [System.Text.UTF8Encoding]::new($false)
     )
-    Write-Host "Feature profile: position=$PositionControl ventilation=$Ventilation heating=$Heating"
+    Write-Host "Feature profile: position=$PositionControl ventilation=$Ventilation heating=$Heating rocking_horse=$RockingHorse"
 
     $stagedProject = Join-Path $stagingProjectRoot 'IAR\Seat_Controller_demo.ewp'
     Invoke-IarBuild -ProjectPath $stagedProject
@@ -170,6 +181,9 @@ try {
         Join-Path $repositoryFirmware "IAR\$Configuration\Exe"
     }
     New-Item -ItemType Directory -Path $artifactOutput -Force | Out-Null
+    Copy-BuildArtifact -Source $featureProfilePath -Destination (
+        Join-Path $artifactOutput 'seat_feature_profile.h'
+    )
     foreach ($artifact in @('Seat_Controller_demo.hex', 'Seat_Controller_demo.out')) {
         $sourceArtifact = Join-Path $stagedExe $artifact
         if (-not (Test-Path -LiteralPath $sourceArtifact -PathType Leaf)) {