docs: update outdated tech stack and incorrect test commands

Author: root-sarvesh

README.md

@@ -9,19 +9,18 @@ UI components, however, the project is set up to independently use any _JavaScri
 or the _JS DOM API_ directly. It is bundled using _Vite_.
 
 - Application
-  - TypeScript 4
-  - React 17
+  - TypeScript 5
+  - React 18
   - SCSS
 
 - Tooling
   - Node.js
-  - Vite 4
+  - Vite 6
   - ESLint
   - Docker
 
 - Testing
-  - Jest
-  - Cypress
+  - Vitest
 
 ## Development
 

docs/DEV.md

@@ -192,18 +192,12 @@ After you are set-up, the steps you take depend on what you want to do:
         - For running unit tests, run
 
             ```bash
-            npm run test:unit
+            npm run test
             ```
 
-        - For running end-to-end tests, run
+            This uses **Lerna + Vitest** to run tests across all packages.
 
-            ```bash
-            ## In 1 terminal
-            npm run build
-            npm run preview
-            ## In another terminal
-            npm run test:e2e
-            ```
+            No end to end test framework is currently configured.
 
         _**Note:**_ If you're running using _Docker Desktop_ on _Windows_ or _Mac_, you might experience
         longer execution times for these scripts. This happens due to cross-file-system communication.