fix: simplify npm publishing to use latest tag only

- Remove stable tag complexity from workflow
- Publish directly to latest tag (default for npx)
- Update documentation to reflect single tag approach

package.json

@@ -100,6 +100,6 @@
     "node": ">=20.10.0"
   },
   "publishConfig": {
-    "tag": "stable"
+    "access": "public"
   }
 }