fix: clean up tsconfig.json and remove Playwright references

- Remove @playwright/test from types array since Playwright was removed
- Update test documentation to use Jest-based tools instead
- Verify TypeScript compilation still works correctly
- Maintains working Jest types for existing tests

tests/FINAL_IMPROVEMENT_SUMMARY.md

@@ -244,8 +244,8 @@ test('medication card handles user interactions', () => {
 1. **Visual Regression Testing**
 
    ```bash
-   npm install --save-dev @playwright/test
+   npm install --save-dev jest-image-snapshot
-   # Add screenshot comparison tests
+   # Add screenshot comparison tests with Jest
    ```
 
 2. **Performance Testing**

tsconfig.json

@@ -8,7 +8,7 @@
     "skipLibCheck": true,
     "esModuleInterop": true,
     "allowSyntheticDefaultImports": true,
-    "types": ["node", "jest", "@playwright/test"],
+    "types": ["node", "jest"],
     "moduleResolution": "bundler",
     "isolatedModules": true,
     "moduleDetection": "force",