✨ Enhance error handling and storage utilities

Improved error handling and updated storage utilities for better performance.

- ✨ **Feature**: Added custom error classes for return process errors
- 🛠️ **Refactor**: Updated hash function to handle strings and objects
- 🛠️ **Refactor**: Enhanced storage key generation with user context
- ⚙️ **Config**: Updated VSCode settings and package dependencies

package.json

@@ -37,6 +37,7 @@
     "@ngrx/effects": "19.0.1",
     "@ngrx/entity": "19.0.1",
     "@ngrx/operators": "19.0.1",
+    "@ngrx/signals": "^19.0.1",
     "@ngrx/store": "19.0.1",
     "@ngrx/store-devtools": "19.0.1",
     "angular-oauth2-oidc": "^17.0.2",
@@ -64,7 +65,6 @@
     "@angular/pwa": "^19.2.0",
     "@eslint/js": "^9.8.0",
     "@ngneat/spectator": "^19.0.0",
-    "@ngrx/signals": "^19.0.1",
     "@nx/angular": "20.4.6",
     "@nx/eslint": "20.4.6",
     "@nx/eslint-plugin": "20.4.6",