Mechanism robustness data supplement

Files:
- timeline_events.csv: event dates and approximate nine-month birth-observation lags used in Figure 1.
- adoption_anchors.csv: public aggregate anchors for SMS/social/smartphone adoption used in Figure 2.
- outcome_anchors.csv: public aggregate birth and contraception anchors used in Figure 3.
- calibration_table.csv: implied treatment-on-treated calibration table.

These files reproduce descriptive anchors only. They are not a replication of Myers and Hooper (2026). Values are taken from the cited public sources listed in the manuscript and audit log.
