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Add Future Plans & Maintenance docs and public API contract test - #1153

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MaxGhenis wants to merge 3 commits into
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maintenance-roadmap
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Add Future Plans & Maintenance docs and public API contract test#1153
MaxGhenis wants to merge 3 commits into
mainfrom
maintenance-roadmap

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@MaxGhenis

@MaxGhenis MaxGhenis commented Aug 25, 2026

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Documents where the TAXSIM emulator is headed and what users can rely on, and pins the reliance surfaces in CI.

What this adds

  • Documentation site: a fifth section, Future Plans, leading with the Axiom backend plans (the emulator moves with the migration; the surfaces stay stable), then the stable public surfaces, then maintenance stated as plain operations facts.
  • README: the same content as a "Future Plans and Maintenance" section after Overview, with a ToC entry.
  • tests/test_public_contract.py: pins the import path (from policyengine_taxsim.runners import PolicyEngineRunner), the constructor taking a TAXSIM-format DataFrame, and run() returning a TAXSIM-format DataFrame with taxsimid/year/fiitax. Renaming or reshaping any of these now fails CI. The CLI entry point already has its own pin in tests/test_cli_entry_point.py.

Verification

  • pytest tests/test_public_contract.py passes locally against a real PolicyEngine run (2 passed).
  • ruff format --check . clean.
  • bun run build succeeds; the new section renders with all five nav tabs intact (verified in a local static serve of dashboard/out).

🤖 Generated with Claude Code

Document the maintenance commitment, the stable public surfaces (CLI,
runners import path, PolicyEngineRunner.run() DataFrame contract), and
the Axiom backend roadmap on the documentation site and in the README.
Pin the Python surfaces with a contract test so a rename or signature
change fails CI.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
@vercel

vercel Bot commented Aug 25, 2026

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Project Deployment Actions Updated (UTC)
policyengine-taxsim Ready Ready Preview Aug 25, 2026 8:34pm

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Lead with the Axiom backend plans; state maintenance as plain
operations facts rather than a continuity pledge, since most readers
have no transition context. Same stable-surface list and contract test.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
@MaxGhenis MaxGhenis changed the title Add Maintenance & Roadmap docs and public API contract test Add Future Plans & Maintenance docs and public API contract test Aug 25, 2026
Pin PolicyEngineRunner as a class (not merely callable), exercise the
documented zero-argument run(), and pin the CLI's stdin-to-stdout
TAXSIM CSV contract through the installed console script.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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