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>

macos/backup-defaults.sh

@@ -0,0 +1,70 @@
+#!/usr/bin/env bash
+# Backup current macOS defaults before applying new ones
+
+set -euo pipefail
+
+BACKUP_DIR="$HOME/dotfiles/macos/backups"
+TIMESTAMP=$(date +%Y%m%d_%H%M%S)
+BACKUP_FILE="$BACKUP_DIR/defaults_backup_${TIMESTAMP}.txt"
+
+# Colors
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m'
+
+echo -e "${GREEN}Backing up current macOS defaults...${NC}"
+
+# Create backup directory
+mkdir -p "$BACKUP_DIR"
+
+# Domains to backup
+domains=(
+    "NSGlobalDomain"
+    "com.apple.dock"
+    "com.apple.finder"
+    "com.apple.Safari"
+    "com.apple.screencapture"
+    "com.apple.screensaver"
+    "com.apple.ActivityMonitor"
+    "com.apple.TextEdit"
+)
+
+# Backup each domain
+{
+    echo "# macOS Defaults Backup"
+    echo "# Created: $(date)"
+    echo "# System: $(sw_vers -productVersion)"
+    echo ""
+} > "$BACKUP_FILE"
+
+for domain in "${domains[@]}"; do
+    echo -e "${YELLOW}Backing up $domain...${NC}"
+    {
+        echo "# ============================================="
+        echo "# $domain"
+        echo "# ============================================="
+        defaults read "$domain" 2>/dev/null || echo "# No settings found for $domain"
+        echo ""
+    } >> "$BACKUP_FILE"
+done
+
+# Backup specific important settings
+echo -e "${YELLOW}Backing up specific settings...${NC}"
+{
+    echo "# ============================================="
+    echo "# Specific Settings"
+    echo "# ============================================="
+    echo "# Dock position: $(defaults read com.apple.dock orientation 2>/dev/null || echo 'default')"
+    echo "# Dock size: $(defaults read com.apple.dock tilesize 2>/dev/null || echo 'default')"
+    echo "# Show hidden files: $(defaults read com.apple.finder AppleShowAllFiles 2>/dev/null || echo 'false')"
+    echo "# Key repeat: $(defaults read NSGlobalDomain KeyRepeat 2>/dev/null || echo 'default')"
+    echo "# Initial key repeat: $(defaults read NSGlobalDomain InitialKeyRepeat 2>/dev/null || echo 'default')"
+} >> "$BACKUP_FILE"
+
+echo -e "${GREEN}✓ Backup saved to: $BACKUP_FILE${NC}"
+
+# Keep only last 5 backups
+cd "$BACKUP_DIR"
+ls -t defaults_backup_*.txt 2>/dev/null | tail -n +6 | xargs -r rm
+
+echo -e "${GREEN}Backup complete!${NC}"