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.

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

chroot-overlay/home/user/.bashrc

@@ -1,26 +0,0 @@
-# ~/.bashrc - Football secure access system
-# This script automatically starts IceWM and Remmina
-
-# Start X with IceWM on login
-if [ -z "$DISPLAY" ] && [ "$XDG_VTNR" = "1" ]; then
-    exec startx
-fi
-
-# Security aliases
-alias rm='rm -i'
-alias cp='cp -i'
-alias mv='mv -i'
-
-# PATH additions
-export PATH=$PATH:/usr/local/bin
-
-# Display security notice on login
-echo ""
-echo "================================================================"
-echo "  FOOTBALL - SECURE ACCESS SYSTEM"
-echo "================================================================"
-echo "  Remote access to this system is DISABLED."
-echo "  Local console access only."
-echo "  System is automatically starting IceWM + Remmina."
-echo "================================================================"
-echo ""