Move unit tests from tests/unit/ to internal/ following Go conventions:
- tests/unit/config/* -> internal/config/* (constants, mode_paths, paths, validation)
- tests/unit/container/* -> internal/container/* (podman, security tests)
- tests/unit/envpool/* -> internal/envpool/* (envpool tests)
- tests/unit/errors/* -> internal/errtypes/* (errors_test.go moved to errtypes package)
- tests/unit/experiment/* -> internal/experiment/* (manager tests)
- tests/unit/jupyter/* -> internal/jupyter/* (config, package_blacklist, service_manager, trash_restore)
Update import paths in test files to reflect new locations.
Note: errors_test.go moved from tests/unit/errors/ to internal/errtypes/ to match the package structure.
Reorganize tests for better structure and coverage:
- Move container/security_test.go from internal/ to tests/unit/container/
- Move related tests to proper unit test locations
- Delete orphaned test files (startup_blacklist_test.go)
- Add privacy middleware unit tests
- Add worker config unit tests
- Update E2E tests for homelab and websocket scenarios
- Update test fixtures with utility functions
- Add CLI helper script for arraylist fixes