Build a Minimal Experiment Tracker

Three model screenshots cannot be compared because each metric lacks run context. A run record ties code, data, parameters, metrics, and artifacts into one comparable unit. Common trap: tracking only the winning metric and losing the conditions that produced it. Step 1 Create a run_id and record the Git SHA plus environment or dependency file. This establishes the code and runtime context so a future rerun starts from the same procedure, not a vague notebook name. Step 2 Record the data snapshot, split rule, label window, and feature pipeline version. Most misleading experiment comparisons come from changed data. These fields…

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