E2E Test Hardening

[adhit-r]

Description

Improve E2E test reliability and coverage for the dashboard.

Checklist

• Add explicit waits for dashboard state transitions (loading → loaded → error)
• Add timeout checks for loading states that hang
• Add error message assertions for dashboard error states
• Add accessibility checks (verify data-testid attributes, ARIA roles)

Consolidates

#109, #110, #111, #112

[IlyasFardaouix]

I think one potential area to improve E2E test reliability is by adding explicit waits for dashboard state transitions, as mentioned in the checklist. I've taken a look at the main.py file and noticed that you're using FastAPI, which has built-in support for async/await. FYI, you might want to consider using a library like pytest-asyncio to write asynchronous tests. Have you considered using a testing library like playwright to simulate user interactions and verify dashboard state transitions?