fix(desktop): improve Windows install script error handling

- SilentlyContinue progress preference (10x faster download)
- try/catch on API + download calls with colored error messages
- Non-fatal shortcut creation (works without admin)
- Colored output for better UX

scripts/install-lite.ps1

@@ -1,4 +1,5 @@
 # GoClaw Lite (Desktop) installer for Windows
+#
 # Usage:
 #   irm https://raw.githubusercontent.com/nextlevelbuilder/goclaw/main/scripts/install-lite.ps1 | iex
 #   .\install-lite.ps1 -Version lite-v0.1.0
@@ -6,52 +7,74 @@
 param([string]$Version = "")
 
 $ErrorActionPreference = "Stop"
+$ProgressPreference = "SilentlyContinue"  # Speeds up Invoke-WebRequest significantly
 $Repo = "nextlevelbuilder/goclaw"
-$InstallDir = "$env:LOCALAPPDATA\GoClaw Lite"
+$InstallDir = Join-Path $env:LOCALAPPDATA "GoClaw Lite"
 
-# Resolve latest version
+# ── Resolve version ──
 if (-not $Version) {
-    Write-Host "-> Fetching latest desktop release..."
-    $releases = Invoke-RestMethod "https://api.github.com/repos/$Repo/releases"
+    Write-Host "-> Fetching latest desktop release..." -ForegroundColor Cyan
+    try {
+        $releases = Invoke-RestMethod "https://api.github.com/repos/$Repo/releases" -ErrorAction Stop
+    } catch {
+        Write-Host "Failed to fetch releases: $_" -ForegroundColor Red
+        Write-Host "Check: https://github.com/$Repo/releases" -ForegroundColor Yellow
+        exit 1
+    }
     $latest = $releases | Where-Object { $_.tag_name -like "lite-v*" -and -not $_.prerelease -and -not $_.draft } | Select-Object -First 1
     if (-not $latest) {
-        Write-Error "No desktop release found. Check https://github.com/$Repo/releases"
+        Write-Host "No desktop release found." -ForegroundColor Red
+        Write-Host "Check: https://github.com/$Repo/releases" -ForegroundColor Yellow
         exit 1
     }
     $Version = $latest.tag_name
 }
 
 $Semver = $Version -replace "^lite-v", ""
-Write-Host "-> Installing GoClaw Lite v$Semver..."
+Write-Host "-> Installing GoClaw Lite v$Semver..." -ForegroundColor Cyan
 
-# Download
+# ── Download ──
 $Asset = "goclaw-lite-$Semver-windows-amd64.zip"
 $Url = "https://github.com/$Repo/releases/download/$Version/$Asset"
 $TmpZip = Join-Path $env:TEMP $Asset
 
-Write-Host "-> Downloading $Url..."
-Invoke-WebRequest -Uri $Url -OutFile $TmpZip -UseBasicParsing
+Write-Host "-> Downloading $Asset..."
+try {
+    Invoke-WebRequest -Uri $Url -OutFile $TmpZip -UseBasicParsing -ErrorAction Stop
+} catch {
+    Write-Host "Download failed: $_" -ForegroundColor Red
+    Write-Host "URL: $Url" -ForegroundColor Yellow
+    exit 1
+}
 
-# Extract
+# ── Extract ──
 Write-Host "-> Installing to $InstallDir..."
 New-Item -ItemType Directory -Force -Path $InstallDir | Out-Null
 Expand-Archive -Path $TmpZip -DestinationPath $InstallDir -Force
-Remove-Item $TmpZip -Force
+Remove-Item $TmpZip -Force -ErrorAction SilentlyContinue
 
-# Create Start Menu shortcut
+# ── Create Start Menu shortcut ──
 $ExePath = Join-Path $InstallDir "goclaw-lite.exe"
 if (Test-Path $ExePath) {
-    $ShortcutPath = Join-Path ([Environment]::GetFolderPath("StartMenu")) "Programs\GoClaw Lite.lnk"
-    $Shell = New-Object -ComObject WScript.Shell
-    $Shortcut = $Shell.CreateShortcut($ShortcutPath)
-    $Shortcut.TargetPath = $ExePath
-    $Shortcut.WorkingDirectory = $InstallDir
-    $Shortcut.Save()
-    Write-Host "-> Start Menu shortcut created"
+    try {
+        $StartMenu = [Environment]::GetFolderPath("StartMenu")
+        $ShortcutPath = Join-Path $StartMenu "Programs\GoClaw Lite.lnk"
+        $Shell = New-Object -ComObject WScript.Shell
+        $Shortcut = $Shell.CreateShortcut($ShortcutPath)
+        $Shortcut.TargetPath = $ExePath
+        $Shortcut.WorkingDirectory = $InstallDir
+        $Shortcut.Save()
+        Write-Host "-> Start Menu shortcut created" -ForegroundColor Gray
+    } catch {
+        Write-Host "-> Could not create shortcut (non-fatal): $_" -ForegroundColor Yellow
+    }
 }
 
+# ── Done ──
 Write-Host ""
-Write-Host "GoClaw Lite v$Semver installed to $InstallDir" -ForegroundColor Green
+Write-Host "GoClaw Lite v$Semver installed!" -ForegroundColor Green
+Write-Host "  Location: $InstallDir" -ForegroundColor Gray
 Write-Host ""
-Write-Host "To launch: Start Menu -> GoClaw Lite"
-Write-Host "Or run: & '$ExePath'"
+Write-Host "To launch:" -ForegroundColor White
+Write-Host "  Start Menu -> GoClaw Lite"
+Write-Host "  Or run: & '$ExePath'"