Add instructions and usb creator application

BUILD_INSTRUCTIONS.md

+# MBetter USB Creator - Build Instructions
+
+## Prerequisites
+
+### Linux:
+```bash
+# Install Python and Qt dependencies
+sudo apt update
+sudo apt install python3 python3-pip python3-pyqt6 genisoimage
+
+# Install Python dependencies
+pip3 install -r requirements.txt
+```
+
+### Windows:
+```cmd
+# Install Python 3.9+ from python.org
+# Install dependencies
+pip install -r requirements.txt
+
+# Install 7-zip (required for ISO extraction)
+# Download from: https://www.7-zip.org/
+```
+
+## Building Standalone Executable
+
+### Automatic Build:
+```bash
+# Run the build script (installs deps and builds)
+python3 build_usb_creator.py
+```
+
+### Manual Build:
+```bash
+# Install dependencies
+pip3 install -r requirements.txt
+
+# Build executable
+pyinstaller --clean usb_creator.spec
+```
+
+## Running
+
+### From Source:
+```bash
+# Linux (requires sudo)
+sudo python3 usb_creator_gui.py
+
+# Windows (run as Administrator)
+python usb_creator_gui.py
+```
+
+### Standalone Executable:
+```bash
+# Linux
+sudo ./dist/MBetterUSBCreator
+
+# Windows
+# Right-click → Run as Administrator
+dist\MBetterUSBCreator.exe
+```
+
+## Features
+
+- ✓ Cross-platform (Linux/Windows)
+- ✓ ISO file selection and validation
+- ✓ USB device auto-detection
+- ✓ Optional root password configuration
+- ✓ Optional OpenVPN config integration
+- ✓ Progress indicators and logging
+- ✓ Safe USB device selection (prevents system disk selection)
+- ✓ Standalone executable (no Python installation required)
+
+## Usage
+
+1. **Select ISO**: Browse for your MBetter ISO file
+2. **Choose USB**: Select target USB device from dropdown
+3. **Configure Password** (Optional): Set custom root password for installed system
+4. **Add VPN Config** (Optional): Include OpenVPN configuration files
+5. **Create USB**: Click to start the USB creation process
+
+The created USB will:
+- Boot to live environment with autologin
+- Automatically start installation process
+- Use your custom root password (if set)
+- Include VPN configuration in installed system (if provided)
+- Work completely offline

config/preseed/debian-installer.cfg

@@ -17,7 +17,7 @@ d-i netcfg/choose_interface select auto
 # d-i netcfg/wireless_key string
 
 # User accounts - predefined (root password set by set_root_password.sh)
-d-i passwd/root-password password changeme
+d-i passwd/root-password-crypted password $1$9PLz.myr$Sd9D85G5IkVTW5wfkwLkz1
 d-i passwd/make-user boolean false
 
 # Time configuration - predefined

requirements.txt

-# MBetter USB Creator - Python Dependencies
-# Install with: pip install -r requirements.txt
-
-# Qt GUI Framework (required for the USB creator GUI)
-PyQt6>=6.4.0
-
-# Build tool for creating standalone executables
-pyinstaller>=5.13.0
-
-# Additional dependencies for cross-platform compatibility
-setuptools>=65.0.0
-wheel>=0.38.0
-
-# Optional: For better Windows compatibility
-pywin32>=306; sys_platform == "win32"
-
-# Development dependencies (optional)
-# Uncomment if you want to modify the USB creator
-# pylint>=2.15.0
-# black>=22.0.0
-# pytest>=7.0.0
+# MBetter USB Creator Requirements
+PyQt6>=6.0.0
+pyinstaller>=5.0.0
\ No newline at end of file

usb_creator.spec

+
+# -*- mode: python ; coding: utf-8 -*-
+import sys
+import os
+
+block_cipher = None
+
+# Determine if we're running on Windows
+is_windows = sys.platform.startswith('win')
+
+a = Analysis(
+    ['usb_creator_gui.py'],
+    pathex=[],
+    binaries=[],
+    datas=[
+        # Add any data files here if needed
+    ],
+    hiddenimports=[
+        'PyQt6.QtCore',
+        'PyQt6.QtGui',
+        'PyQt6.QtWidgets',
+    ],
+    hookspath=[],
+    hooksconfig={},
+    runtime_hooks=[],
+    excludes=[],
+    win_no_prefer_redirects=False,
+    win_private_assemblies=False,
+    cipher=block_cipher,
+    noarchive=False,
+)
+
+pyz = PYZ(a.pure, a.zipped_data, cipher=block_cipher)
+
+exe = EXE(
+    pyz,
+    a.scripts,
+    a.binaries,
+    a.zipfiles,
+    a.datas,
+    [],
+    name='MBetterUSBCreator' if not is_windows else 'MBetterUSBCreator.exe',
+    debug=False,
+    bootloader_ignore_signals=False,
+    strip=False,
+    upx=True,
+    upx_exclude=[],
+    runtime_tmpdir=None,
+    console=False,  # No console window
+    disable_windowed_traceback=False,
+    target_arch=None,
+    codesign_identity=None,
+    entitlements_file=None,
+    icon='icon.ico' if is_windows else None,
+)
+
+# Create app bundle on macOS
+if sys.platform == 'darwin':
+    app = BUNDLE(exe,
+                 name='MBetterUSBCreator.app',
+                 icon='icon.icns',
+                 bundle_identifier='com.mbetter.usbcreator')