Initial commit

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

macos/macos-init.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+set -Eeuo pipefail
+
+# Runtime environment
+if [[ "$(uname -s)" != "Darwin" ]]; then
+    echo "Error: this script supports macOS only." >&2
+    exit 1
+fi
+
+# Show all file extensions in Finder
+defaults write NSGlobalDomain AppleShowAllExtensions -bool true
+
+# Show the path bar in Finder
+defaults write com.apple.finder ShowPathbar -bool true
+
+# Restart Finder so the settings above take effect
+killall Finder >/dev/null 2>&1 || true
+
+echo "macOS configuration completed."