Improve code consistency and documentation readability

- Standardized Markdown formatting across documentation files.
- Fixed inconsistent usage of inline code blocks and improved syntax clarity.
- Updated tests and JSX for cleaner formatting and better readability.
- Adjusted E2E test navigation handlers for multiline code consistency.
- Simplified TypeScript configuration and organized JSON structure for better maintainability.

frontend/tests/app/page.test.tsx

@@ -10,7 +10,7 @@ import Home from '@/app/[locale]/page';
 jest.mock('next/image', () => ({
   __esModule: true,
   default: (props: any) => {
-    // eslint-disable-next-line @next/next/no-img-element, jsx-a11y/alt-text
+    // eslint-disable-next-line @next/next/no-img-element
     return <img {...props} />;
   },
 }));

frontend/tests/lib/auth/storage.test.ts

@@ -240,9 +240,9 @@ describe('Storage Module', () => {
       const descriptor = Object.getOwnPropertyDescriptor(global, 'localStorage');
       Object.defineProperty(global, 'localStorage', { value: undefined, configurable: true });
 
-      await expect(
-        saveTokens({ accessToken: 'a', refreshToken: 'r' })
-      ).rejects.toThrow('localStorage not available - cannot save tokens');
+      await expect(saveTokens({ accessToken: 'a', refreshToken: 'r' })).rejects.toThrow(
+        'localStorage not available - cannot save tokens'
+      );
 
       if (descriptor) Object.defineProperty(global, 'localStorage', descriptor);
     });