Fix New York CCAP rates and namespace

[hua7450]

Summary

• Move New York-specific Child Care Assistance Program parameters and variables from the federal HHS CCDF namespace to gov.states.ny.ocfs.ccap.
• Add the market rates effective October 1, 2024, including four county groups, current age bands, weekly/daily/part-day units, and the five-day weekly-rate boundary.
• Add the market rates effective June 1, 2022 from 22-OCFS-LCM-14 (80th percentile of the 2021–22 survey, 269 rate cells), which also abolished hourly rate units; short care falls to the part-day category from that date via a new part-day minimum-hours parameter.
• Apply New York's statewide family share of 1% of income above the federal poverty guideline, subject to the $1 weekly minimum for families required to pay.
• Apply the statutory 10% family-share cap (SSL § 410-x(6), effective April 16, 2021, per 21-OCFS-ADM-14) to the historical era, replacing the per-county 10–35% schedule, and exempt families with income at or below the poverty level from the historical minimum share (18 NYCRR 415.3(e)(1), (e)(4)).
• Add New York income eligibility: 300% of the state income standard (modeled as the federal poverty guideline) through September 2023, then 85% of state median income from October 1, 2023 (NYS Register, May 1, 2024).
• Broaden CCDF countable income with child support received, unemployment compensation, workers' compensation, and Social Security; the TANF omission is documented in the variable (circular-dependency precedent from Indiana CCDF).
• Cap the modeled subsidy at both eligible-child market rates and pre-subsidy child care expenses.

Closes #7766.

Sources

• 24-OCFS-LCM-22, including the county groups and rate tables on file pages 14–18.
• 22-OCFS-LCM-14 and its Attachment A rate tables, effective June 1, 2022, including the hourly-rate abolition on file page 5.
• 19-OCFS-LCM-23, including the part-day and hourly unit definitions on file page 6.
• 21-OCFS-ADM-14, including the 10% family-share cap and its April 16, 2021 effective date on file pages 2–3.
• 18 NYCRR Part 415, current as of December 24, 2025, including the family-share rule on file page 19, payment caps on page 39, and rate-unit rules on pages 44–45.
• NYS Register, May 1, 2024, including the income-eligibility expansion to 85% of state median income on file pages 12–13.
• New York Accepted ACF-118 CCDF FFY 2025–2027 Appendix.
• New York FFY 2025–2027 CCDF Plan, including countable income categories on file pages 25–26.

Modeling scope

The implementation uses household county as a proxy for provider county because PolicyEngine does not represent provider location; unknown counties default to rate group 3. Extended eligibility pathways, family-share exemptions beyond the modeled FPL rule, excess-period payments, and payment differentials (special-needs 115% rate, non-traditional-hours and homelessness floors, accreditation) remain outside this PR. TANF is excluded from countable income to avoid a CCDF → TANF → dependent-care-deduction circular dependency.

Review

A full source-verified review ran against this branch (8 critical findings, all fixed in the latest commit): the June 2022 rate era, the statutory family-share cap and below-FPL exemption, state income limits, broadened countable income, and parameterization of the part-day hour threshold. Every 2022 rate cell was transcribed from Attachment A and independently spot-verified against the rendered PDF.

Testing

• policyengine_us/tests/policy/baseline/gov/states/ny/ocfs/ccap: 49 passed, including new boundary tests for both income-limit eras, the post-June-2022 part-day classification, and a hand-derived 2022 annual blend across the two rate eras.
• policyengine_us/tests/policy/baseline/gov/hhs/ccdf, Idaho ICCP, and Indiana CCDF: 216 passed.
• Partner contract test files are unchanged; the 16 partner CCDF assertions pass.
• Ruff format and lint checks passed.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (0eec199) to head (3ad18f4).
⚠️ Report is 9 commits behind head on main.

Additional details and impacted files

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  Coverage   100.00%   100.00%            
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  Files            2        12    +10     
  Lines           31       204   +173     
  Branches         0         5     +5     
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+ Hits            31       204   +173     

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