feat: implement smart Windows installer with automatic GPU detection and fallback

Author: moinulmoin

README.md

@@ -66,9 +66,7 @@ VoiceTypr is an open source AI voice-to-text dictation tool, alternative to Wisp
 #### Windows
 - Windows 10/11 (64-bit)
 - 3-4 GB free disk space (for AI models)
-- Two versions available:
-  - **CPU Version**: Universal compatibility (works on all systems)
-  - **GPU Version**: Vulkan acceleration (works with NVIDIA, AMD, Intel GPUs)
+- GPU acceleration available (5-10x faster with NVIDIA, AMD, Intel GPUs)
 
 ### Quick Install
 
@@ -81,25 +79,18 @@ VoiceTypr is an open source AI voice-to-text dictation tool, alternative to Wisp
 > **Note**: VoiceTypr is fully signed and notarized by Apple, so you can run it without security warnings.
 
 #### Windows
-1. Choose your version from the [latest release](https://github.com/moinulmoin/voicetypr/releases/latest):
-   - **VoiceTypr_x.x.x_x64-setup.exe**: CPU version (recommended for most users)
-   - **VoiceTypr_x.x.x_x64-gpu-setup.exe**: GPU version (faster, requires compatible GPU)
+1. Download the latest [VoiceTypr installer](https://github.com/moinulmoin/voicetypr/releases/latest)
 2. Run the installer
 3. Launch VoiceTypr from Start Menu
 4. Follow the onboarding to download your preferred AI model
 
-> **Which version should I choose?**
-> - **CPU Version**: Works on any Windows 10/11 PC. Choose this if unsure.
-> - **GPU Version**: ~2-3x faster transcription. Requires:
->   - Vulkan-compatible GPU (NVIDIA GTX/RTX, AMD Radeon, Intel Arc/Iris Xe)
->   - Updated GPU drivers with Vulkan runtime installed
->   - ⚠️ **Important**: If the GPU version doesn't start (missing vulkan-1.dll), use the CPU version or update your GPU drivers
-
-> **GPU Version Troubleshooting:**
-> - **Error: "vulkan-1.dll was not found"** → Your system lacks Vulkan runtime. Solutions:
->   1. Use the CPU version instead (recommended)
->   2. Update GPU drivers: [NVIDIA](https://www.nvidia.com/drivers) | [AMD](https://www.amd.com/support) | [Intel](https://www.intel.com/content/www/us/en/support/products/80939/graphics.html)
-> - The GPU version has a load-time dependency on Vulkan - it won't start without proper GPU drivers
+> **GPU Acceleration (5-10x faster)**
+> - VoiceTypr automatically uses your GPU if available
+> - For best performance, ensure your graphics drivers are up to date:
+>   - [NVIDIA Drivers](https://www.nvidia.com/drivers)
+>   - [AMD Drivers](https://www.amd.com/support)
+>   - [Intel Drivers](https://www.intel.com/content/www/us/en/support/products/80939/graphics.html)
+> - Falls back to CPU automatically if GPU unavailable
 
 ## 🎮 Usage
 
@@ -135,6 +126,23 @@ voicetypr/
 └── tests/                 # Test suites
 ```
 
+## 🔧 Troubleshooting
+
+### Windows GPU Acceleration
+
+VoiceTypr automatically detects and uses your GPU for faster transcription. If you're experiencing slower performance:
+
+1. **Update your graphics drivers** - This is the most common fix:
+   - [NVIDIA Drivers](https://www.nvidia.com/drivers)
+   - [AMD Drivers](https://www.amd.com/support)
+   - [Intel Drivers](https://www.intel.com/content/www/us/en/support/products/80939/graphics.html)
+
+2. **Check logs** - Enable debug logging in Settings to see if GPU is being used
+
+3. **Verify GPU support** - Modern GPUs (2016+) should work automatically
+
+> **Note**: VoiceTypr always works - it automatically falls back to CPU if GPU acceleration is unavailable
+
 ## 📄 License
 
 VoiceTypr is licensed under the [GNU Affero General Public License v3.0](LICENSE.md).

scripts/release-windows.ps1

@@ -132,6 +132,7 @@ if (-not $SkipBuild) {
 
     # Sign if key available
     $keyPath = "$env:USERPROFILE\.tauri\voicetypr.key"
+    $signature = ""
     if (Test-Path $keyPath) {
         Write-Info "Signing update artifact..."
         $env:TAURI_SIGNING_PRIVATE_KEY_PATH = $keyPath
@@ -140,11 +141,71 @@ if (-not $SkipBuild) {
 
         if (Test-Path "$zipPath.sig") {
             Write-Success "Update artifact signed"
+            # Read signature for latest.json - ensure proper formatting
+            $signature = (Get-Content "$zipPath.sig" -Raw).Trim()
+            # Remove any potential line breaks within the signature
+            $signature = $signature -replace "`r`n", "" -replace "`n", ""
+            Write-Info "Signature captured: $($signature.Substring(0, [Math]::Min(50, $signature.Length)))..."
         } else {
             Write-Warning "Failed to sign update artifact"
+            $signature = ""
         }
     } else {
         Write-Warning "No signing key found - updates won't have signatures"
+        $signature = ""
+    }
+    
+    # Update latest.json with Windows platform
+    Write-Info "Updating latest.json with Windows platform..."
+    
+    $latestJsonPath = "$OutputDir\latest.json"
+    
+    # Try to download existing latest.json from GitHub release
+    Write-Info "Checking for existing latest.json in release..."
+    try {
+        # Download latest.json if it exists in the release
+        $null = gh release download $ReleaseTag -p "latest.json" -D $OutputDir --clobber 2>&1
+        if (Test-Path $latestJsonPath) {
+            Write-Success "Downloaded existing latest.json from release"
+        }
+    } catch {
+        Write-Info "No existing latest.json found in release"
+    }
+    
+    if (Test-Path $latestJsonPath) {
+        # Read existing latest.json
+        $latestJson = Get-Content $latestJsonPath -Raw | ConvertFrom-Json
+        
+        # Add Windows platform
+        if (-not $latestJson.platforms) {
+            $latestJson | Add-Member -NotePropertyName "platforms" -NotePropertyValue @{} -Force
+        }
+        
+        $latestJson.platforms."windows-x86_64" = @{
+            signature = $signature
+            url = "https://github.com/moinulmoin/voicetypr/releases/download/$ReleaseTag/VoiceTypr_${Version}_x64-setup.exe.zip"
+        }
+        
+        # Save updated latest.json
+        $latestJson | ConvertTo-Json -Depth 10 | Set-Content $latestJsonPath
+        Write-Success "Updated latest.json with Windows platform"
+    } else {
+        # Create new latest.json if it doesn't exist (Windows-only release)
+        Write-Info "Creating new latest.json for Windows..."
+        $latestJson = @{
+            version = "v$Version"
+            notes = "See the release notes for v$Version"
+            pub_date = (Get-Date).ToUniversalTime().ToString("yyyy-MM-dd'T'HH:mm:ss'Z'")
+            platforms = @{
+                "windows-x86_64" = @{
+                    signature = $signature
+                    url = "https://github.com/moinulmoin/voicetypr/releases/download/$ReleaseTag/VoiceTypr_${Version}_x64-setup.exe.zip"
+                }
+            }
+        }
+        
+        $latestJson | ConvertTo-Json -Depth 10 | Set-Content $latestJsonPath
+        Write-Success "Created latest.json for Windows"
     }
 }
 
@@ -172,6 +233,12 @@ if (-not $SkipPublish) {
         }
     }
 
+    # Upload latest.json
+    if (Test-Path "$OutputDir\latest.json") {
+        Write-Info "Uploading latest.json..."
+        gh release upload $ReleaseTag "$OutputDir\latest.json" --clobber
+    }
+    
     Write-Success "Installer and update artifacts uploaded"
 }