Initial commit: Complete macOS dotfiles system

🖖 Features:
- Master 'engage' script for one-command setup
- 120+ CLI tools via Homebrew
- 40+ Applications (casks + MAS apps)
- Complete macOS system configuration
- Security hardening and privacy settings
- Obsidian knowledge vault setup
- Comprehensive backup strategies
- Automated symlink management

Live long and prosper\! 🚀

🤖 Generated with Claude Code (https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

bin/backup-dotfiles

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+# Quick backup of important dotfiles
+
+set -euo pipefail
+
+DOTFILES_DIR="$HOME/dotfiles"
+BACKUP_DIR="$DOTFILES_DIR/backups"
+TIMESTAMP=$(date +%Y%m%d_%H%M%S)
+
+# Colors
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m'
+
+echo -e "${GREEN}Backing up dotfiles...${NC}"
+
+# Create backup directory
+mkdir -p "$BACKUP_DIR"
+
+# Files to backup
+files=(
+    "$HOME/.zshrc"
+    "$HOME/.gitconfig"
+    "$HOME/.vimrc"
+    "$HOME/.ssh/config"
+    "$HOME/.config/karabiner/karabiner.json"
+)
+
+# Create tarball
+tar_file="$BACKUP_DIR/dotfiles_backup_${TIMESTAMP}.tar.gz"
+
+for file in "${files[@]}"; do
+    if [ -f "$file" ]; then
+        echo -e "${YELLOW}Adding: $file${NC}"
+    fi
+done
+
+tar -czf "$tar_file" \
+    --exclude="*.log" \
+    --exclude=".git" \
+    "${files[@]}" 2>/dev/null || true
+
+echo -e "${GREEN}Backup created: $tar_file${NC}"
+
+# Keep only last 10 backups
+cd "$BACKUP_DIR"
+ls -t dotfiles_backup_*.tar.gz | tail -n +11 | xargs -r rm
+
+echo -e "${GREEN}Done!${NC}"