feat: open WebUI after fresh desktop install

scripts/install.ps1

@@ -42,7 +42,7 @@ function Show-Usage {
     Write-Host ""
     Write-Host "By default this installs or upgrades nanobot-ai from PyPI."
     Write-Host "Use --dev to install from the current main branch on GitHub."
-    Write-Host "Use --dry-run to print what would happen without installing or starting the wizard."
+    Write-Host "Use --dry-run to print what would happen without installing or starting setup."
 }
 
 function Test-Python {
@@ -133,6 +133,26 @@ function Get-NanobotCommand {
     }
 }
 
+function Test-FreshNanobotInstall {
+    $HomeDir = [Environment]::GetFolderPath([Environment+SpecialFolder]::UserProfile)
+    if (-not $HomeDir) {
+        return $false
+    }
+    return -not (Test-Path -LiteralPath (Join-Path $HomeDir ".nanobot\config.json"))
+}
+
+function Test-BrowserSession {
+    if ($env:SSH_CONNECTION -or $env:SSH_TTY -or -not [Environment]::UserInteractive) {
+        return $false
+    }
+
+    $CurrentSessionId = (Get-Process -Id $PID).SessionId
+    return @(
+        Get-Process -Name explorer -ErrorAction SilentlyContinue |
+            Where-Object { $_.SessionId -eq $CurrentSessionId }
+    ).Count -gt 0
+}
+
 function Install-WithActivePython {
     Write-Info "Detected an active virtual environment. Installing into it..."
     Ensure-Pip $Python
@@ -252,7 +272,10 @@ if ($DryRun) {
         Write-Info "Dry run: would run nanobot as: $VenvDir\Scripts\python.exe -m nanobot"
     }
     if ($env:NANOBOT_SKIP_WIZARD -eq "1") {
-        Write-Info "Dry run: would skip setup wizard because NANOBOT_SKIP_WIZARD=1."
+        Write-Info "Dry run: would skip automatic setup because NANOBOT_SKIP_WIZARD=1."
+    } elseif ((Test-FreshNanobotInstall) -and (Test-BrowserSession)) {
+        Write-Info "Dry run: would start the WebUI for this fresh desktop install."
+        Write-Info "Dry run: would fall back to the setup wizard for older releases."
     } else {
         Write-Info "Dry run: would run the setup wizard."
     }
@@ -294,11 +317,27 @@ if ($LASTEXITCODE -ne 0) {
 }
 
 if ($env:NANOBOT_SKIP_WIZARD -eq "1") {
-    Write-Info "Skipping setup wizard because NANOBOT_SKIP_WIZARD=1."
-    Write-Info "Run this later: $(Get-NanobotCommand) onboard --wizard"
+    Write-Info "Skipping automatic setup because NANOBOT_SKIP_WIZARD=1."
+    Write-Info "Run this later: $(Get-NanobotCommand) webui"
     return
 }
 
+if ((Test-FreshNanobotInstall) -and (Test-BrowserSession)) {
+    Invoke-Nanobot @("webui", "--help") *> $null
+    if ($LASTEXITCODE -eq 0) {
+        Write-Info "Starting nanobot WebUI..."
+        Write-Info "Configure your first provider and model in Settings > Models."
+        Write-Info "Run this later: $(Get-NanobotCommand) webui"
+        Invoke-Nanobot @("webui", "--yes")
+        if ($LASTEXITCODE -ne 0) {
+            Fail "WebUI did not start."
+        }
+        return
+    }
+    Write-Info "The installed release does not support nanobot webui yet."
+    Write-Info "Falling back to the setup wizard..."
+}
+
 Write-Info "Starting setup wizard..."
 Invoke-Nanobot @("onboard", "--wizard")
 if ($LASTEXITCODE -ne 0) {