implement modular backend setup scripts, new frontend components, and expanded server services

scripts/setup/setup-whisper.ps1

@@ -0,0 +1,105 @@
+param([string]$Release = "v1.9.1")
+
+$ErrorActionPreference = "Stop"
+$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
+$rootDir = Split-Path -Parent (Split-Path -Parent $scriptDir)
+$appDir = Join-Path $rootDir "app"
+$toolsDir = Join-Path $appDir "tools"
+$speechWinRoot = Join-Path $appDir "speech-backend\win"
+$speechRoot = Join-Path $speechWinRoot "cpu"
+$speechVulkanRoot = Join-Path $speechWinRoot "vulkan"
+
+function Enable-Tls12 {
+    try {
+        $tls12 = [Enum]::ToObject([Net.SecurityProtocolType], 3072)
+        [Net.ServicePointManager]::SecurityProtocol =
+            [Net.ServicePointManager]::SecurityProtocol -bor $tls12
+    } catch {
+        throw "TLS 1.2 could not be enabled: $($_.Exception.Message)"
+    }
+}
+
+function Download-File {
+    param([string]$Url, [string]$DestPath, [string]$Label)
+    Write-Host "   >>  Downloading $Label..."
+    Enable-Tls12
+    $client = New-Object System.Net.WebClient
+    $client.Headers.Add("User-Agent", "Local-AI-Image-Generator")
+    try {
+        $client.DownloadFile($Url, $DestPath)
+    } finally {
+        $client.Dispose()
+    }
+}
+
+function Find-FirstFile {
+    param([string]$Root, [string[]]$Names)
+    foreach ($name in $Names) {
+        $found = Get-ChildItem $Root -Recurse -File -ErrorAction SilentlyContinue |
+            Where-Object { $_.Name -ieq $name } |
+            Select-Object -First 1
+        if ($found) { return $found.FullName }
+    }
+    return $null
+}
+
+New-Item -ItemType Directory -Force -Path $toolsDir, $speechRoot, $speechVulkanRoot | Out-Null
+
+$cliPath = Join-Path $speechRoot "whisper-cli.exe"
+if (Test-Path $cliPath) {
+    Write-Host "   OK  whisper.cpp speech backend already ready."
+    if (-not (Test-Path (Join-Path $speechVulkanRoot "whisper-cli.exe"))) {
+        Write-Host "   ..  Optional Vulkan GPU backend slot: app/speech-backend/win/vulkan"
+    }
+    exit 0
+}
+
+$legacyCli = Join-Path $speechWinRoot "whisper-cli.exe"
+$legacyServer = Join-Path $speechWinRoot "whisper-server.exe"
+if (Test-Path $legacyCli) {
+    Copy-Item $legacyCli $cliPath -Force
+    if (Test-Path $legacyServer) {
+        Copy-Item $legacyServer (Join-Path $speechRoot "whisper-server.exe") -Force
+    }
+    Get-ChildItem $speechWinRoot -File -ErrorAction SilentlyContinue |
+        Where-Object { $_.Name -notin @("whisper-cli.exe", "whisper-server.exe") } |
+        ForEach-Object { Copy-Item $_.FullName (Join-Path $speechRoot $_.Name) -Force }
+    Write-Host "   OK  migrated existing whisper.cpp CPU backend to app/speech-backend/win/cpu."
+    Write-Host "   ..  For GPU transcription, place a Vulkan-enabled whisper.cpp build in app/speech-backend/win/vulkan."
+    exit 0
+}
+
+$asset = "whisper-bin-x64.zip"
+$archive = Join-Path $toolsDir $asset
+$extract = Join-Path $toolsDir "whisper-extract"
+$url = "https://github.com/ggml-org/whisper.cpp/releases/download/$Release/$asset"
+
+Remove-Item $archive, $extract -Recurse -Force -ErrorAction SilentlyContinue
+Download-File -Url $url -DestPath $archive -Label "whisper.cpp speech backend ($Release)"
+
+Write-Host "   >>  Extracting whisper.cpp speech backend..."
+Expand-Archive -Path $archive -DestinationPath $extract -Force
+
+$cli = Find-FirstFile -Root $extract -Names @("whisper-cli.exe", "main.exe")
+$server = Find-FirstFile -Root $extract -Names @("whisper-server.exe", "server.exe")
+if (-not $cli) {
+    throw "whisper-cli.exe was not found after extracting $asset"
+}
+
+Get-ChildItem $extract -Recurse -File | ForEach-Object {
+    Copy-Item $_.FullName (Join-Path $speechRoot $_.Name) -Force
+}
+if ((Split-Path -Leaf $cli) -ine "whisper-cli.exe") {
+    Copy-Item $cli $cliPath -Force
+}
+if ($server -and (Split-Path -Leaf $server) -ine "whisper-server.exe") {
+    Copy-Item $server (Join-Path $speechRoot "whisper-server.exe") -Force
+}
+
+Remove-Item $archive, $extract -Recurse -Force -ErrorAction SilentlyContinue
+if (-not (Test-Path $cliPath)) {
+    throw "whisper-cli.exe was not installed."
+}
+Write-Host "   OK  whisper.cpp speech backend installed."
+Write-Host "   ..  CPU backend path: app/speech-backend/win/cpu"
+Write-Host "   ..  Optional Vulkan GPU backend path: app/speech-backend/win/vulkan"