Summary

• convert microplex-us into a YAML/JSON-only content package: no runtime Python, tests, scripts, docs dashboard, generated artifacts, or local env files remain
• package only specs/us-2024.yaml plus the four JSON manifests under src/microplex_us/manifests
• replace stale Python/docs/artifact workflows with a single explicit content-package contract workflow
• update package guidance to route execution to Microplex, donor imputation to microimpute, and calibration to microcalibrate
• update the US spec to use the support-spine/geography-assignment construction language

Dependency

Depends on PolicyEngine/microplex#41, pinned to core commit 5a1ea5e107334f45e850678774efc0c613dce250.

Validation

• find . -name '*.py' -print | sort -> no output
• PYTHONPATH=/Users/maxghenis/.codex-worktrees/microplex-zero-python-core-20260607/src:src uv run --no-project --python 3.13 --with pydantic --with pyyaml python -m microplex.content_package --package microplex_us --spec specs/us-2024.yaml --contract manifests/ecps_export_contract.json --src-root src/microplex_us --json
• git diff --check
• rm -rf dist && uv build
• installed built wheel into a temporary Python 3.13 env with --no-deps, then validated package resources with microplex.content_package
• /cycle second-pass subagent reviews for both core and US branches: no actionable findings

Notes

This does not build, score, or promote a new MP H5. It only completes the content-package transition so future execution lives in Microplex/microimpute/microcalibrate.