refactor: Complete directory cleanup

Finalizes directory cleanup by removing obsolete files:
- All old debootstrap build scripts (docker-*.sh, final-simple-build.sh)
- All old documentation from root (BUILD-*.md, DOCKER-*.md)
- Obsolete Dockerfiles (Dockerfile, Dockerfile.build)
- Obsolete chroot-overlay/ directory (now using preseed.cfg)
- Old build.sh (replaced by scripts/build-iso.sh)

All files are now in proper directories:
- scripts/: Build and test scripts
- docs/: All documentation
- config/: Configuration files
- logs/: Log files
- keys/: WireGuard keys

Repository is clean and ready for production.

💘 Generated with Crush

Assisted-by: Gemini 2.5 Flash via Crush <crush@charm.land>

chroot-overlay/home/user/.icewm/preferences

@@ -1,27 +0,0 @@
-# IceWM configuration for football system
-
-# Window placement
-TaskBarShowClock=1
-TaskBarShowStartMenu=1
-TaskBarShowWindowListMenu=1
-TaskBarShowWorkspaces=0
-TaskBarShowWindows=0
-
-# Auto-start Remmina
-StartupCommand="remmina"
-
-# No desktop icons (clean interface)
-DesktopBackgroundCenter=1
-DesktopBackgroundColor="rgb:00/33/66"
-
-# Security - minimize features
-ShowLoginStatus=0
-ShowLogoutMenu=1
-ShowSettingsMenu=0
-ShowHelpMenu=0
-ShowRunProgram=0
-
-# Remmina should be main focus
-ClickToFocus=1
-FocusOnAppRaise=1
-RaiseOnFocus=1