chore: bump package.json + package-lock auf 1.4.2

Patch-Release: Einkaufsliste-Konsolidierung ueber Einheiten (500 g + 1 kg
Kartoffeln → 1,5 kg). Migration 015 fuer Check-Key-Family-Stabilitaet.
formatQuantity app-weit auf de-DE Komma-Dezimal.

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

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "kochwas",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "kochwas",
-      "version": "1.4.1",
+      "version": "1.4.2",
       "dependencies": {
         "@google/generative-ai": "^0.24.1",
         "@types/archiver": "^7.0.0",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "kochwas",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "private": true,
   "type": "module",
   "scripts": {