🔖 chore: bump version to 1.8.0

Minor release for the new `mac doctor --summary` flag (backward-compatible),
the security hardening, and the consistency/test work in the Unreleased section.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Labault

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "mac-dev-setup",
-  "version": "1.7.0",
+  "version": "1.8.0",
   "description": "Curated macOS development setup managed through a small mac CLI.",
   "directories": {
     "doc": "docs"