[FEATURE]: Implement Authentication Flow Playwright

[Arpit529Srivastava]

Problem or Use Case

Implement end-to-end tests for the authentication flow in KubeStellar UI using the existing Playwright infrastructure.

Proposed Solution

This issue focuses on testing the login functionality and authentication-related features:

Test Coverage

• Login page loads correctly (/login)
• Login form validation (empty fields, invalid format)
• Successful login with valid credentials
• Failed login with invalid credentials
• Error message display for failed attempts
• Redirect to dashboard after successful login
• Session persistence across page refreshes
• Logout functionality

Are you willing to contribute?

• Yes, I'd like to help implement this feature.

Additional Context

Acceptance Criteria

• All authentication scenarios are covered
• Tests run successfully in CI environment
• Tests are stable and not flaky
• Page Object Model pattern is used
• Tests work across all configured browsers

[Arpit529Srivastava]

/help-wanted

[Arpit529Srivastava]

will started working after merging of the setup PRs

[Arpit529Srivastava]

/assign