feat(installer): ask install folder first before dependency scan

Moves the install directory picker to the top of the wizard flow,
right after the welcome message, so users see it immediately.
Removes the duplicate folder picker that was in the MSI install section.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: hlsitechio

install.ps1

@@ -119,6 +119,34 @@ if ($isUpdate) {
 }
 Write-Host ""
 
+# =========================================================================
+#  INSTALL FOLDER (ask first)
+# =========================================================================
+
+$defaultDir = Join-Path $env:ProgramFiles "T3 Code"
+Write-Bot "First — where do you want T3 Code installed?"
+Write-Host ""
+Write-Host "    [1] Default ($defaultDir)" -ForegroundColor Cyan
+Write-Host "    [2] Current folder ($($PWD.Path))" -ForegroundColor Cyan
+Write-Host "    [3] Custom path" -ForegroundColor Cyan
+Write-Host ""
+$folderChoice = Read-Host "  Your choice (1/2/3)"
+switch ($folderChoice) {
+    "2" { $installDir = $PWD.Path }
+    "3" {
+        $customPath = Read-Host "  Enter full path"
+        if ($customPath -and $customPath.Length -gt 2) {
+            $installDir = $customPath
+        } else {
+            Write-Warn "Invalid path, using default"
+            $installDir = $defaultDir
+        }
+    }
+    default { $installDir = $defaultDir }
+}
+Write-Ok "Install folder: $installDir"
+Write-Host ""
+
 # =========================================================================
 #  PACKAGE MANAGER
 # =========================================================================
@@ -458,33 +486,6 @@ try {
             Write-Host ""
 
             if (Ask-YesNo "Download and install T3 Code v$($latestVersion)?") {
-                # Ask for install folder
-                $defaultDir = Join-Path $env:ProgramFiles "T3 Code"
-                Write-Host ""
-                Write-Bot "Where do you want to install T3 Code?"
-                Write-Host "    Default: $defaultDir" -ForegroundColor DarkGray
-                Write-Host "    Current: $($PWD.Path)" -ForegroundColor DarkGray
-                Write-Host ""
-                Write-Host "    [1] Default ($defaultDir)" -ForegroundColor Cyan
-                Write-Host "    [2] Current folder ($($PWD.Path))" -ForegroundColor Cyan
-                Write-Host "    [3] Custom path" -ForegroundColor Cyan
-                Write-Host ""
-                $folderChoice = Read-Host "  Your choice (1/2/3)"
-                switch ($folderChoice) {
-                    "2" { $installDir = $PWD.Path }
-                    "3" {
-                        $customPath = Read-Host "  Enter full path"
-                        if ($customPath -and (Test-Path (Split-Path $customPath -Parent) -ErrorAction SilentlyContinue)) {
-                            $installDir = $customPath
-                        } else {
-                            Write-Warn "Invalid path, using default"
-                            $installDir = $defaultDir
-                        }
-                    }
-                    default { $installDir = $defaultDir }
-                }
-                Write-Host ""
-
                 $tempDir = Join-Path $env:TEMP "t3code-install"
                 $msiPath = Join-Path $tempDir $msiName
                 if (-not (Test-Path $tempDir)) { New-Item -ItemType Directory -Path $tempDir -Force | Out-Null }