chore(release): v1.4.18

Per-chart overlay toggles, expanded achievements roster (incl.
hidden Easter-eggs), BD-Zielbereich 7T/30T sub-values wired,
chart visual revert to clean lines, and the AdminShell mobile
section-strip scrollbar fix.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "healthlog",
-  "version": "1.4.17",
+  "version": "1.4.18",
   "private": true,
   "packageManager": "pnpm@10.31.0",
   "scripts": {