fix: Fixed agent windows version

installer/setup.ps1

@@ -66,8 +66,17 @@ try {
 
   $cfgDir = Join-Path $env:ProgramData "vantage"
   New-Item -ItemType Directory -Force -Path $cfgDir | Out-Null
+  $cfgPath = Join-Path $cfgDir "config.yaml"
 
-  $cfg = @"
+  # Preserve existing config on upgrade. A MajorUpgrade re-runs this script with
+  # no SERVERID/TOKEN, so blindly rewriting would wipe the agent_token the agent
+  # persisted after Register(). Only (re)write when a ServerId is supplied
+  # (fresh install / explicit re-register).
+  if ((Test-Path $cfgPath) -and (-not $ServerId)) {
+    Write-Log "config.yaml exists and no ServerId supplied - preserving existing config (upgrade)"
+  }
+  else {
+    $cfg = @"
 server_url: "$ServerUrl"
 server_id: "$ServerId"
 pre_reg_token: "$Token"
@@ -75,12 +84,12 @@ agent_token: ""
 poll_interval: 30s
 tls: true
 "@
-  $cfgPath = Join-Path $cfgDir "config.yaml"
-  Set-Content -Path $cfgPath -Value $cfg -Encoding utf8
-  Write-Log "wrote $cfgPath"
+    Set-Content -Path $cfgPath -Value $cfg -Encoding utf8
+    Write-Log "wrote $cfgPath"
 
-  # Lock down ACL: SYSTEM + Administrators only
-  Invoke-Native -File "icacls" -Arguments @($cfgPath, "/inheritance:r", "/grant:r", "SYSTEM:F", "Administrators:F")
+    # Lock down ACL: SYSTEM + Administrators only
+    Invoke-Native -File "icacls" -Arguments @($cfgPath, "/inheritance:r", "/grant:r", "SYSTEM:F", "Administrators:F")
+  }
 
   if (-not $InstallDir) { $InstallDir = $PSScriptRoot }
   $nssm = Join-Path $InstallDir "nssm.exe"
@@ -89,9 +98,31 @@ tls: true
   if (-not (Test-Path $nssm)) { throw "nssm.exe not found at $nssm" }
   if (-not (Test-Path $exe))  { throw "vantage-agent.exe not found at $exe" }
 
-  Invoke-Native -File $nssm -Arguments @("install", "VantageAgent", $exe)
+  # Install only if the service isn't already registered (an upgrade may leave
+  # it in place). "nssm install" on an existing service errors otherwise.
+  $exists = Get-Service -Name "VantageAgent" -ErrorAction SilentlyContinue
+  if (-not $exists) {
+    Invoke-Native -File $nssm -Arguments @("install", "VantageAgent", $exe)
+  } else {
+    Write-Log "VantageAgent service already exists - updating binary path"
+    Invoke-Native -File $nssm -Arguments @("set", "VantageAgent", "Application", $exe)
+  }
   Invoke-Native -File $nssm -Arguments @("set", "VantageAgent", "Start", "SERVICE_AUTO_START")
-  Invoke-Native -File $nssm -Arguments @("start", "VantageAgent")
+
+  # Redirect service stdout/stderr to log files (nssm discards them otherwise)
+  # with online rotation at ~1MB.
+  $outLog = Join-Path $logDir "agent-stdout.log"
+  $errLog = Join-Path $logDir "agent-stderr.log"
+  Invoke-Native -File $nssm -Arguments @("set", "VantageAgent", "AppStdout", $outLog)
+  Invoke-Native -File $nssm -Arguments @("set", "VantageAgent", "AppStderr", $errLog)
+  Invoke-Native -File $nssm -Arguments @("set", "VantageAgent", "AppStdoutCreationDisposition", "4")
+  Invoke-Native -File $nssm -Arguments @("set", "VantageAgent", "AppStderrCreationDisposition", "4")
+  Invoke-Native -File $nssm -Arguments @("set", "VantageAgent", "AppRotateFiles", "1")
+  Invoke-Native -File $nssm -Arguments @("set", "VantageAgent", "AppRotateOnline", "1")
+  Invoke-Native -File $nssm -Arguments @("set", "VantageAgent", "AppRotateBytes", "1048576")
+
+  # restart (not just start) so an upgrade picks up the new binary
+  Invoke-NativeSoft -File $nssm -Arguments @("restart", "VantageAgent")
 
   Write-Log "=== setup ok ==="
   exit 0

installer/vantage-agent.wxs

@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<?define Version = "0.0.0.0" ?>
 <Wix xmlns="http://wixtoolset.org/schemas/v4/wxs">
   <Package Name="Vantage Agent" Manufacturer="Vantage"
-           Version="1.0.0.0" UpgradeCode="7d1e6d2c-2a5f-4b3e-9c3a-8a1b2c3d4e5f"
+           Version="$(var.Version)" UpgradeCode="7d1e6d2c-2a5f-4b3e-9c3a-8a1b2c3d4e5f"
            Scope="perMachine">
     <MajorUpgrade DowngradeErrorMessage="A newer version is already installed." />
     <MediaTemplate EmbedCab="yes" />