task_id: D4_data_pipeline
domain: data
network: false
time_limit_sec: 1200
seeds: [0, 1, 2]
difficulty: hard
languages: [python]
tags: [data-validation, pipeline, cross-field-constraints, deduplication, regex, csv]
workspace_file_count: 3
lines_changed_expected: 60
parameterized: true
tni_patterns: [A, C]