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/etc/default/rcS

@@ -1,18 +0,0 @@
-# Football Secure Access System
-# Minimal Debian image for privileged access workstation operations
-
-# Local user setup
-export LC_ALL=C
-
-# Minimal systemd target - graphical only
-default graphical.target
-
-# Disable remote access services
-ssh: NO
-telnet: NO
-ftp: NO
-smtp: NO
-
-# Enable only necessary services
-network-manager: YES
-display-manager: NO  # We'll use startx manually