feat: add PyInstaller spec + Windows build script (console=True)

build_windows.bat

@@ -0,0 +1,47 @@
+@echo off
+setlocal
+
+echo ============================================================
+echo   Zynq Flasher — Windows x64 Build Script
+echo ============================================================
+echo.
+
+REM ── 1. Check Python ─────────────────────────────────────────
+python --version >nul 2>&1
+if %errorlevel% neq 0 (
+    echo [ERROR] Python not found. Install Python 3.9+ first.
+    pause
+    exit /b 1
+)
+echo [1/4] Python: OK
+
+REM ── 2. Install dependencies ─────────────────────────────────
+echo [2/4] Installing Python packages...
+pip install -r requirements.txt --quiet
+pip install pyinstaller --quiet
+echo        Done.
+
+REM ── 3. Clean previous builds ────────────────────────────────
+echo [3/4] Cleaning previous builds...
+if exist build rmdir /s /q build
+if exist dist\ZynqFlaster.exe del /q dist\ZynqFlaster.exe
+if not exist dist mkdir dist
+
+REM ── 4. Build ────────────────────────────────────────────────
+echo [4/4] Building ZynqFlaster.exe...
+pyinstaller --clean --noconfirm ZynqFlaster.spec
+
+echo.
+if exist dist\ZynqFlaster.exe (
+    echo ============================================================
+    echo   Build successful!
+    echo   Output: dist\ZynqFlaster.exe
+    echo ============================================================
+) else (
+    echo [ERROR] Build failed — dist\ZynqFlaster.exe not found.
+    pause
+    exit /b 1
+)
+
+endlocal
+pause