update readme

README.md

@@ -2,6 +2,26 @@
 
 This template should help get you started developing with Svelte in Vite.
 
+## Running the app
+
+```bash
+npm install
+npm run dev
+```
+
+## Running tests
+
+- **Watch mode** (re-runs on file changes):  
+  `npm run test`
+
+- **Single run** (CI-friendly):  
+  `npm run test:run`
+
+- **Coverage report**:  
+  `npm run test:coverage`
+
+Tests use Vitest and `@testing-library/svelte`. Place test files next to the code they cover (e.g. `Component.test.js` beside `Component.svelte`) or in a `__tests__` directory.
+
 ## Recommended IDE Setup
 
 [VS Code](https://code.visualstudio.com/) + [Svelte](https://marketplace.visualstudio.com/items?itemName=svelte.svelte-vscode).