- Add TestSprintIssues class (5 tests) - List sprint issues (empty/with data) - Add issue to sprint - Add nonexistent issue to sprint - Add TestSprintCrossProjectValidation class (3 tests) - IDOR prevention for get/update/start through wrong project Coverage: sprints.py 72% → 76%
Add 28 tests for sprints API covering: - CRUD operations (create, list, get, update) - Lifecycle management (start, complete, cancel) - Sprint velocity endpoint - Authorization and access control - Pagination and filtering