Configure static linking for Windows - single .exe distribution with OCR

docs/BUILD_WINDOWS_STATIC.md

@@ -0,0 +1,63 @@
+# Static Build Configuration for Windows
+
+This configuration builds EU-Utility V3 as a single .exe file with all OCR libraries statically linked.
+
+## Prerequisites
+
+### 1. Install vcpkg
+
+```powershell
+git clone https://github.com/Microsoft/vcpkg.git C:\vcpkg
+C:\vcpkg\bootstrap-vcpkg.bat
+C:\vcpkg\vcpkg integrate install
+```
+
+### 2. Install Static Libraries
+
+```powershell
+# Install Tesseract and dependencies as static libraries
+C:\vcpkg\vcpkg install tesseract:x64-windows-static-md
+C:\vcpkg\vcpkg install leptonica:x64-windows-static-md
+C:\vcpkg\vcpkg install libpng:x64-windows-static-md
+C:\vcpkg\vcpkg install tiff:x64-windows-static-md
+C:\vcpkg\vcpkg install libjpeg-turbo:x64-windows-static-md
+```
+
+**Note:** This takes 30-60 minutes on first run.
+
+### 3. Set Environment Variables
+
+```powershell
+$env:VCPKG_ROOT = "C:\vcpkg"
+$env:VCPKGRS_DYNAMIC = "0"
+```
+
+## Building
+
+### Development Build
+```powershell
+npm run tauri-dev
+```
+
+### Production Build (Single .exe)
+```powershell
+npm run tauri-build
+```
+
+The output will be:
+- `src-tauri/target/release/bundle/msi/*.msi` - Windows installer
+- `src-tauri/target/release/eu-utility-v3.exe` - Standalone executable
+
+## Build Size
+
+- **Without OCR:** ~15MB
+- **With OCR (static):** ~80-120MB
+
+## Distribution
+
+The .msi installer includes everything needed:
+- Main application (single .exe)
+- WebView2 runtime (if not present)
+- Start menu shortcuts
+
+Users do not need to install Tesseract separately.

scripts/build-windows-static.ps1

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+# Build script for Windows static linking
+# Run this in PowerShell before building
+
+Write-Host "Setting up environment for static build..." -ForegroundColor Green
+
+# Set vcpkg environment
+$env:VCPKG_ROOT = "C:\vcpkg"
+$env:VCPKGRS_DYNAMIC = "0"
+
+# Verify vcpkg is installed
+if (-not (Test-Path "C:\vcpkg\vcpkg.exe")) {
+    Write-Host "vcpkg not found at C:\vcpkg" -ForegroundColor Red
+    Write-Host "Install with:" -ForegroundColor Yellow
+    Write-Host "  git clone https://github.com/Microsoft/vcpkg.git C:\vcpkg" -ForegroundColor Cyan
+    Write-Host "  C:\vcpkg\bootstrap-vcpkg.bat" -ForegroundColor Cyan
+    exit 1
+}
+
+# Check for static libraries
+$libs = @("tesseract", "leptonica")
+foreach ($lib in $libs) {
+    $installed = C:\vcpkg\vcpkg list | Select-String $lib
+    if (-not $installed) {
+        Write-Host "$lib not installed. Installing..." -ForegroundColor Yellow
+        Write-Host "This may take 30+ minutes..." -ForegroundColor Yellow
+        C:\vcpkg\vcpkg install "${lib}:x64-windows-static-md"
+    }
+}
+
+Write-Host "Environment configured for static build!" -ForegroundColor Green
+Write-Host "Run: npm run tauri-build" -ForegroundColor Cyan

src-tauri/Cargo.toml

@@ -47,10 +47,10 @@ uuid = { version = "1.6", features = ["v4", "serde"] }
 # Regex
 regex = "1.10"
 
-# Image processing for OCR
+# Image processing for OCR - static linking for distribution
 image = "0.24"
 imageproc = "0.23"
-leptess = "0.14"
+leptess = { version = "0.14", features = ["static"] }
 
 # Clipboard
 arboard = "3.3"