Sign Out Feature Does Not Terminate Session Properly

**Environment:**

- Browser: Chrome Version 139.0.7258.139
- OS: Windows 11

**Preconditions:**

User account exists with valid credentials.

**Steps to Reproduce:**

- Log in with valid credentials.
- Click the “Sign Out” button.
- After logout, open page source.
- Manually delete "div" containing the “Log In” button.
- Delete "div" with gray background overlay.
- Attempt to remove an existing patient record.

**Expected Result:**
After logging out, the session should be fully terminated.

User should be redirected to login page.

Application should prevent any interaction or content modification without valid authentication.

**Actual Result:**
User can still interact with and edit page content after logging out by manipulating the DOM, indicating that logout only hides the UI instead of fully ending the session.

**Notes/Suggestions:**

Ensure server-side session is invalidated upon logout.

Protect endpoints with authentication checks (not just UI restrictions).