Retrieves a paginated list of test runs for a project with optional filtering by branch, state, result, and environment.
API key from the Empirical dashboard.
Page number (1-indexed, default 1).
Items per page (default 20, max 100).
Filter by Git branch name.
Filter by test run state. One of: pending, queued, started, ended, error, cancelled, cancelling.
Filter by test result. One of: passed, failed.
Comma-separated list of environment IDs to filter by.
Only return runs from the last N days.