Why this change is needed:
Previous wait strategy used `/health` endpoint with `-f` flag and only
30 second timeout, causing timeouts in GitHub Actions.
How it solves it:
- Use root endpoint `/` instead of `/health` (Qdrant API root responds)
- Remove `-f` flag to accept any response (not just 2xx)
- Increase timeout from 30s to 60s
- Add progress output for each attempt
- Add clear error message on failure
Impact:
More reliable Qdrant service detection in E2E tests
Testing:
Will verify on GitHub Actions E2E test run
6737ec00bc