fix(deps): force @babel/core >=7.29.6

Resolves the @babel/core <=7.29.0 advisory. Transitive; pinned via
pnpm override. Dependabot alert #255 (frontend).

frontend/package.json

@@ -180,7 +180,8 @@
       "esbuild": ">=0.28.1",
       "form-data": ">=4.0.6",
       "markdown-it": ">=14.2.0",
-      "launch-editor": ">=2.14.1"
+      "launch-editor": ">=2.14.1",
+      "@babel/core": ">=7.29.6"
     }
   }
 }