Bump frontend to 0.1.2 to keep step with the backend rebuild

The push job's existence check runs per-service; leaving frontend at
0.1.1 (already in Harbor) would fail the gate even though only the
backend image needed fixing. No frontend code changed — this is a
forced bump to satisfy the per-service tag-overwrite guard. Harbor's
layer dedup keeps the storage cost negligible.

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

tehriehlbudget-frontend/package.json

@@ -1,7 +1,7 @@
 {
   "name": "tehriehlbudget-frontend",
   "private": true,
-  "version": "0.1.1",
+  "version": "0.1.2",
   "type": "module",
   "scripts": {
     "dev": "vite",