chore: final cleanup of Jasmine/Karma references

- Remove Karma test configuration from packages/angular/angular.json
- Update README files to reference Vitest instead of Karma
- Remove old test file: register.integration.spec.ts.old
- All tests still pass: 94 passed | 1 skipped (95)

This completes the comprehensive Jasmine → Vitest migration:
✅ Test runners migrated
✅ Dependencies cleaned
✅ Test syntax converted
✅ Configuration updated
✅ Documentation updated
✅ Old files removed

Author: dackers86

examples/angular/README.md

@@ -38,10 +38,10 @@ This will compile your project and store the build artifacts in the `dist/` dire
 
 ## Running unit tests
 
-To execute unit tests with the [Karma](https://karma-runner.github.io) test runner, use the following command:
+To execute unit tests with [Vitest](https://vitest.dev), use the following command:
 
 ```bash
-ng test
+pnpm test
 ```
 
 ## Running end-to-end tests

packages/angular/README.md

@@ -43,10 +43,10 @@ Once the project is built, you can publish your library by following these steps
 
 ## Running unit tests
 
-To execute unit tests with the [Karma](https://karma-runner.github.io) test runner, use the following command:
+To execute unit tests with [Vitest](https://vitest.dev), use the following command:
 
 ```bash
-ng test
+pnpm test
 ```
 
 ## Running end-to-end tests

packages/angular/angular.json

@@ -15,19 +15,6 @@
             "project": "ng-package.json"
           }
         },
-        "test": {
-          "builder": "@angular-devkit/build-angular:karma",
-          "options": {
-            "main": "src/test.ts",
-            "tsConfig": "tsconfig.spec.json",
-            "karmaConfig": "karma.conf.js",
-            "polyfills": ["zone.js", "zone.js/testing"],
-            "styles": [],
-            "scripts": [],
-            "assets": [],
-            "include": ["src/**/*.spec.ts", "src/**/*.d.ts"]
-          }
-        }
       }
     }
   }