Compare
Each block compares two consecutive saves (older → newer). The first block is your latest save versus the previous one; further blocks step back through older pairs.
Need at least two snapshots
Save the weekly brief twice (e.g. after different data refreshes) to compare headline signals.
Diffs use stored player IDs and display names from each save — not live FPL, injuries, or minutes. Same ID counts as unchanged even if the display string differed in an edge case.