Signing, Installer, New Workflows

flutter_app/build_windows.bat

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+@echo off
+REM rmtPocketWatcher Windows Build Script (Batch version)
+REM Creates both standalone executable and MSIX installer
+
+echo Building rmtPocketWatcher for Windows (Release mode)
+echo =============================================
+
+REM Clean previous builds
+echo Cleaning previous builds...
+flutter clean
+if exist "build" rmdir /s /q "build"
+
+REM Install dependencies
+echo Installing dependencies...
+flutter pub get
+
+REM Build Flutter Windows app
+echo Building Flutter Windows app...
+flutter build windows --release
+
+REM Check if build was successful
+if not exist "build\windows\x64\runner\Release\rmtpocketwatcher.exe" (
+    echo ERROR: Build failed - executable not found
+    pause
+    exit /b 1
+)
+
+echo ✓ Flutter build completed successfully
+
+REM Create standalone executable directory
+echo Creating standalone executable package...
+if exist "build\windows\standalone" rmdir /s /q "build\windows\standalone"
+mkdir "build\windows\standalone"
+
+REM Copy all necessary files for standalone distribution
+xcopy "build\windows\x64\runner\Release\*" "build\windows\standalone\" /E /I /H /Y
+
+REM Create version info
+echo rmtPocketWatcher - Lambda Banking Conglomerate > "build\windows\standalone\README.txt"
+echo Star Citizen AUEC Price Tracker >> "build\windows\standalone\README.txt"
+echo. >> "build\windows\standalone\README.txt"
+echo To run: Double-click rmtpocketwatcher.exe >> "build\windows\standalone\README.txt"
+echo No installation required - all dependencies included. >> "build\windows\standalone\README.txt"
+
+echo ✓ Standalone executable created at: build\windows\standalone
+
+REM Create MSIX installer (optional)
+echo Creating MSIX installer...
+flutter pub run msix:create
+if %errorlevel% neq 0 (
+    echo WARNING: MSIX installer creation failed, continuing with standalone only...
+) else (
+    echo ✓ MSIX installer created
+)
+
+REM Create distribution archive
+echo Creating distribution archive...
+powershell -Command "Compress-Archive -Path 'build\windows\standalone\*' -DestinationPath 'build\rmtPocketWatcher-Windows-Standalone.zip' -CompressionLevel Optimal -Force"
+
+echo.
+echo 🎉 Build completed successfully!
+echo =============================================
+echo Standalone executable: build\windows\standalone\rmtpocketwatcher.exe
+echo Distribution archive: build\rmtPocketWatcher-Windows-Standalone.zip
+echo.
+echo To test: cd build\windows\standalone ^&^& rmtpocketwatcher.exe
+echo To distribute: Share the ZIP file
+echo.
+pause