Add Colorado ACA subsidies for immigrants

[daphnehanse11]

Fixes #6364

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.02%. Comparing base (9739e2f) to head (79a9606).
⚠️ Report is 17 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #6987       +/-   ##
===========================================
+ Coverage   76.92%   97.02%   +20.10%     
===========================================
  Files           1        7        +6     
  Lines          39      101       +62     
  Branches        4        1        -3     
===========================================
+ Hits           30       98       +68     
+ Misses          8        2        -6     
  Partials        1        1               

Flag	Coverage Δ
unittests	97.02% <100.00%> (+20.10%)	⬆️

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[daphnehanse11]

PR Review: Colorado OmniSalud

Note: Removed DC Medicaid code (already in PR #6541). This PR is now Colorado-only.

🔴 Critical (Must Fix)

1. Hard-coded 12 in benefit calculation
   • File: policyengine_us/variables/gov/states/co/hcpf/omnisalud/co_omnisalud.py:33
   • Current: slcsp_monthly * 12
   • Fix: Use MONTHS_IN_YEAR constant from model_api

🟡 Should Address

1. Income Limit Comparison

   • File: co_omnisalud_income_eligible.py:26
   • Official source states income must be "less than 150% FPL" (strict <), but code uses <=
   • Verify which is correct for Colorado

2. 2025 Transition Sources Need Verification

   • covers_daca.yaml and covers_undocumented_children.yaml cite 2025 changes
   • Could not verify these transitions in the referenced sources
   • Note: Federal DACA ACA eligibility ended Aug 25, 2025 (DACA recipients lose ACA, not gain it)
   • Research Colorado-specific law for these transitions

3. Missing Benefit Tests

   • No tests exist for co_omnisalud benefit amount calculation
   • Add tests verifying benefit equals SLCSP for eligible individuals

🟢 Suggestions

1. SLCSP Period Clarification
   • slcsp is MONTH but accessed with YEAR period
   • Consider adding comment explaining the aggregation behavior

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Validation Summary

Check	Result
Regulatory Accuracy	2 items need verification
Code Patterns	1 hard-coded value
Vectorization	✅ Correct where() usage
Parameter Access	✅ Correct patterns
defined_for	✅ Uses StateCode.CO
Test Coverage	Missing benefit tests
CI Status	✅ Passing

Verified Correct

• ✅ Income limit 150% FPL
• ✅ Program start 2022
• ✅ Child max age 18
• ✅ Immigration statuses (undocumented, DACA, TPS)
• ✅ Variable naming conventions
• ✅ Test formatting with underscore separators

Next Steps

To auto-fix issues: /fix-pr 6987

Or address manually:

1. Replace * 12 with * MONTHS_IN_YEAR
2. Verify income comparison operator
3. Research and cite 2025 transition sources
4. Add benefit calculation tests

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🤖 Generated with Claude Code