Frontend test coverage for auth + map [FRONTEND]

[b-ayd]

Description

The MVP frontend overall coverage is 13% because auth screens,
map components, and routing UI have no tests. Add Jest tests
for the highest-risk untested components.

Due Time

03.05.2026

Acceptance Criteria

• Login screen: valid submit, invalid email, wrong password error
• Register screen: successful registration, duplicate email error
• MapView: obstacle pins render from mocked API response
• Route planning: origin/destination input and route display

Reviewer

To be assigned at pickup