Derive other health insurance premiums

[daphnehanse11]

Summary

• Requires policyengine-us>=1.673.0, the release expected to include Decompose SPM MOOP premiums policyengine-us#8178's clean MOOP variables.
• Adds a CPS data-generation step that derives other_health_insurance_premiums from reported non-Medicare health insurance premiums after subtracting baseline modeled Marketplace, CHIP, and Medicaid premiums.
• Uses the clean medicare_part_b_premium target/input surface directly and stops exporting legacy reported medicare_part_b_premiums from CPS.
• Allocates tax-unit-level computed premiums to person rows before deriving the other-premium input, and keeps the original CPS-reported premium fields available as source inputs.

Addresses PolicyEngine/policyengine-us#8089.

Notes

This should merge after PolicyEngine/policyengine-us#8178 is merged and released as policyengine-us>=1.673.0. Until that release exists, dependency resolution is expected to fail because the latest published policyengine-us is 1.672.0 and does not define other_health_insurance_premiums or medicare_part_b_premium.

The SPM premium stack is other_health_insurance_premiums plus modeled Marketplace, CHIP, Medicaid, and Medicare Part B premiums.

Tests

• .venv/bin/python -m pytest tests/unit/test_medical_expense_inputs.py tests/unit/datasets/test_other_health_insurance_premiums.py tests/unit/calibration/test_target_config.py -q
• .venv/bin/ruff format --check pyproject.toml policyengine_us_data/utils/policyengine.py policyengine_us_data/datasets/cps/cps.py policyengine_us_data/db/etl_national_targets.py policyengine_us_data/storage/calibration_targets/pull_hardcoded_targets.py policyengine_us_data/utils/loss.py policyengine_us_data/datasets/puf/puf.py tests/unit/test_medical_expense_inputs.py tests/unit/calibration/test_target_config.py tests/unit/datasets/test_other_health_insurance_premiums.py && .venv/bin/ruff check policyengine_us_data/utils/policyengine.py policyengine_us_data/datasets/cps/cps.py policyengine_us_data/db/etl_national_targets.py policyengine_us_data/storage/calibration_targets/pull_hardcoded_targets.py policyengine_us_data/utils/loss.py policyengine_us_data/datasets/puf/puf.py tests/unit/test_medical_expense_inputs.py tests/unit/calibration/test_target_config.py tests/unit/datasets/test_other_health_insurance_premiums.py
• git diff --check
• Expected until #8178 release: env -u UV_FROZEN uv lock --locked fails because policyengine-us>=1.673.0 is not published yet.