Update UK data build to FRS 2024-25

[MaxGhenis]

Context

DWP published the Family Resources Survey for financial year 2024 to 2025 on 26 March 2026:
https://www.gov.uk/government/statistics/family-resources-survey-financial-year-2024-to-2025/family-resources-survey-financial-year-2024-to-2025

The current policyengine-uk-data build still appears to be based on FRS 2023-24:

• policyengine_uk_data/datasets/create_datasets.py builds frs_2023_24.h5 and enhanced_frs_2023_24.h5.
• policyengine_uk_data/storage/download_private_prerequisites.py expects frs_2023_24.zip, not frs_2024_25.zip.
• The current policyengine.py bundled UK manifest points at enhanced_frs_2023_24 from policyengine-uk-data 1.55.10.

Expected work

• Add/import the FRS 2024-25 raw prerequisite data.
• Update the dataset creation pipeline to build frs_2024_25.h5, enhanced_frs_2024_25.h5, and tiny variants if still useful.
• Review and update tests, release-manifest generation defaults, and docs that hard-code frs_2023_24 / enhanced_frs_2023_24.
• Account for DWP's 2024-25 administrative-data integration and any back-series implications called out in the release.
• After publishing the data package artifact, update the policyengine.py bundled UK release manifest to certify the new default dataset.

Notes

This came up while reviewing the JOSS paper and checking whether it should cite the 2023-24 or 2024-25 FRS as the current PolicyEngine UK dataset source.

[MaxGhenis]

Update: the UK Data Service catalogue has the 2024-25 FRS as study 9563:

• Title: Family Resources Survey, 2024-2025
• DOI: http://doi.org/10.5255/UKDA-SN-9563-1
• File last updated: 22 May 2026
• TAB package: 9563tab_05DD0069587DBD25E5719D355CE05FC0827D5EDD58C24ECE9AB85ACD954A9AEB_V1.zip

The TAB ZIP contains UKDA-9563-tab/tab/*.tab; the current loader expects a flat directory of .tab files, so the ingest step will either need to flatten that folder or update create_frs to read the nested UKDS layout.

[MaxGhenis]

Closing as resolved by the merged FRS 2024-25 ingestion PR: #410.