diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 606699ed5..d8d1cb3e0 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -1,11 +1,63 @@
-## Updating data
+# Contributing to policyengine-us-data
 
-If your changes present a non-bugfix change to one or more datasets which are cloud-hosted (CPS, ECPS and PUF), then please change both the filename and URL (in both the class definition file and in `storage/upload_completed_datasets.py`. This enables us to store historical versions of datasets separately and reproducibly.
+See the [shared PolicyEngine contribution guide](https://github.com/PolicyEngine/.github/blob/main/CONTRIBUTING.md) for cross-repo conventions (towncrier changelog fragments, `uv run`, PR description format, anti-patterns). This file covers policyengine-us-data specifics.
+
+## Commands
+
+```bash
+make install                 # install deps (uv)
+make format                  # format (required)
+make test-unit               # unit tests (synthetic / mocked, seconds)
+make test-integration        # integration tests (need built H5 datasets)
+make test                    # both
+make data                    # full dataset build (long)
+make push-pr-branch          # push to upstream with correct tracking (use before opening PRs)
+uv run pytest tests/unit/datasets/ -v
+```
+
+Python 3.12–3.14. Default branch: `main`.
+
+## Test organisation
+
+- `tests/unit/` — self-contained (synthetic data, mocks, checked-in fixtures). Run in seconds with no external deps.
+  - `unit/datasets/` — dataset code
+  - `unit/calibration/` — calibration code
+- `tests/integration/` — requires built H5 datasets, HuggingFace downloads, `Microsimulation` objects, or DB ETL. Named after the dataset under test (e.g. `test_cps.py` tests `cps_2024.h5`).
+
+**Placement rules:**
+
+- **Never** put tests that need H5 files or `Microsimulation` in `unit/`.
+- **Never** put synthetic-only tests in `integration/`.
+- Sanity checks (value ranges, population counts) go in the per-dataset integration file, not a separate sanity file.
+- When adding an integration test, extend the existing per-dataset file if one exists.
+
+## Updating datasets
+
+If your change is a non-bugfix update to a cloud-hosted dataset (CPS, enhanced CPS, PUF), bump both the filename and URL in the class definition and in `storage/upload_completed_datasets.py`. That lets us store historical dataset versions separately and reproducibly.
 
 ## Opening PRs
 
-Push PR branches to the upstream `PolicyEngine/policyengine-us-data` repository, not to a personal fork. From the repo root, run:
+**Always create branches on the upstream repo, not a fork.** Fork PRs can't access workflow secrets and will fail on data-download steps. The convenience target:
+
+```bash
+make push-pr-branch
+```
+
+pushes the current branch to `upstream` with the correct tracking so `gh pr create` just works.
+
+## Repo-specific anti-patterns
+
+- **Never fabricate data or results.** This is a research codebase; reproducible aggregates only. Use `[TO BE CALCULATED]` placeholders if a number isn't computed yet.
+- **Don't** open PRs from personal forks (CI will fail on secrets).
+- **Don't** add `[codex]` or other agent-label prefixes to PR titles.
+- **Don't** skip full-build CI when touching the imputation or calibration pipeline.
+- **Don't** commit large binary artefacts — HuggingFace storage only.
+
+## CI workflows
 
-`make push-pr-branch`
+Five workflow files in `.github/workflows/`:
 
-This avoids the fork-only CI failure path and sets the upstream tracking branch correctly before opening the PR.
+- `pr.yaml` — fork check, lint, uv.lock freshness, towncrier fragment check, unit tests, smoke test, docs build. Integration tests trigger when files in `policyengine_us_data/`, `modal_app/`, or `tests/integration/` change. ~2–3 min for the unit path.
+- `push.yaml` — on push to main: either version-bump + PyPI publish (on `Update package version` commits), or a full Modal data build with integration tests (on everything else).
+- `pipeline.yaml` — dispatch only, spawns the H5 generation pipeline on Modal with configurable GPU/epochs/workers.
+- `local_area_publish.yaml` / `local_area_promote.yaml` — manual dispatch to build/stage and then promote local-area H5 files.
diff --git a/changelog.d/migrate-to-towncrier.changed.md b/changelog.d/migrate-to-towncrier.changed.md
new file mode 100644
index 000000000..6e46aec7c
--- /dev/null
+++ b/changelog.d/migrate-to-towncrier.changed.md
@@ -0,0 +1 @@
+Migrate the changelog tooling from `yaml-changelog` (`changelog_entry.yaml` + `changelog.yaml` + `build-changelog`) to towncrier (`changelog.d/<branch>.<type>.md` fragments). The repo's CI already ran `towncrier check` in `pr.yaml` and `bump_version.py` already read fragments from `changelog.d/`; this drops the leftover yaml-changelog artefacts (unused dep, unused reusable workflow, zero-byte `changelog_entry.yaml`, and duplicated `changelog.yaml` whose contents are already in `CHANGELOG.md`) so the tooling story matches the rest of the org.
diff --git a/changelog.yaml b/changelog.yaml
deleted file mode 100644
index 4c4dda209..000000000
--- a/changelog.yaml
+++ /dev/null
@@ -1,954 +0,0 @@
-- changes:
-    added:
-    - Initialized changelogging
-  date: 2024-09-09 17:29:10
-  version: 1.0.0
-- changes:
-    added:
-    - Improved changelog
-  date: 2024-09-09 17:29:10
-- bump: minor
-  changes:
-    changed:
-    - Improved logging
-    - Updated required Python version
-    - Removed setuptools_scm
-  date: 2024-09-11 13:48:15
-- bump: patch
-  changes:
-    fixed:
-    - Added GitHub Actions test job to PR and push
-    - Run publish to PyPI GitHub Actions job only on push
-    - Fix changelog GitHub Actions job
-  date: 2024-09-11 16:40:10
-- bump: minor
-  changes:
-    added:
-    - Added conditional deletion of existing resource
-    - Added downloading of existing resources for backup purposes
-    - Added tqdm to download script
-    changed:
-    - Fixed upload script's use of tqdm
-  date: 2024-09-12 19:47:01
-- bump: patch
-  changes:
-    fixed:
-    - Bug in docs where prerequisites wouldn't load in GCP.
-  date: 2024-09-16 08:04:08
-- bump: minor
-  changes:
-    fixed:
-    - Moved heavy dependencies to dev.
-  date: 2024-09-17 10:27:10
-- bump: patch
-  changes:
-    added:
-    - Jupyter Book documentation.
-  date: 2024-09-17 19:37:44
-- bump: minor
-  changes:
-    added:
-    - Geography generation module (previously in US package)
-    changed:
-    - Fixed export structure within __init__ files
-  date: 2024-09-18 03:05:11
-- bump: patch
-  changes:
-    fixed:
-    - Import errors in non-dev mode.
-  date: 2024-09-18 16:30:37
-- bump: patch
-  changes:
-    fixed:
-    - Corrected versioning issues
-  date: 2024-09-18 19:49:48
-- bump: patch
-  changes:
-    changed:
-    - Fixed CI/CD push script
-  date: 2024-09-18 20:57:03
-- bump: patch
-  changes:
-    changed:
-    - Split push actions into two separate files
-    - Made run of second portion of push conditional upon run of first
-  date: 2024-09-19 15:36:00
-- bump: patch
-  changes:
-    removed:
-    - Unnecessary info in CONTRIBUTING.md
-  date: 2024-09-22 21:15:27
-- bump: minor
-  changes:
-    added:
-    - Migrate the ACS from the US-repository.
-    changed:
-    - Enhanced CPS now uses a 3-year pooled CPS.
-  date: 2024-09-23 10:28:55
-- bump: patch
-  changes:
-    changed:
-    - Documentation updated.
-    - URLs for PUF data.
-  date: 2024-09-23 11:22:32
-- bump: minor
-  changes:
-    added:
-    - State and household size as predictors for rent and property taxes.
-  date: 2024-09-25 10:40:39
-- bump: minor
-  changes:
-    changed:
-    - Bump to policyengine-us 1.100.0.
-  date: 2024-09-29 15:03:05
-- bump: minor
-  changes:
-    fixed:
-    - Moved PolicyEngine US out of setup.py dependencies.
-  date: 2024-09-29 18:08:57
-- bump: minor
-  changes:
-    added:
-    - EITC calibration by child counts.
-    - 10% dropout during weight calibration.
-  date: 2024-10-07 11:45:52
-- bump: minor
-  changes:
-    fixed:
-    - EITC calibration.
-  date: 2024-10-08 15:48:46
-- bump: minor
-  changes:
-    changed:
-    - EITC targets improved by uprating 2020 rather than 2021 targets.
-  date: 2024-10-09 14:11:41
-- bump: patch
-  changes:
-    changed:
-    - Reverted to using standard version of microdf
-  date: 2024-10-29 19:15:42
-- bump: minor
-  changes:
-    added:
-    - Paper on methodology.
-  date: 2024-11-12 07:03:52
-- bump: patch
-  changes:
-    added:
-    - Metric comparisons by dataset to the documentation.
-  date: 2024-11-12 15:03:39
-- bump: minor
-  changes:
-    added:
-    - Metric comparisons by dataset to the documentation.
-    - Calibration of state populations.
-  date: 2024-11-19 12:29:11
-- bump: minor
-  changes:
-    added:
-    - Automatic upload behavior.
-  date: 2024-11-29 20:23:10
-- bump: minor
-  changes:
-    changed:
-    - Changed GitHub release URLs to Hugging Face URLs for Enhanced CPS 2024 and Pooled
-      3-Year CPS 2023.
-    - Set minimum version for policyengine-core.
-  date: 2024-12-02 20:40:26
-- bump: patch
-  changes:
-    changed:
-    - Install order and requirements for policyengine-us
-  date: 2024-12-03 23:21:24
-- bump: minor
-  changes:
-    added:
-    - DC PTC takeup.
-  date: 2025-01-13 16:36:45
-- bump: patch
-  changes:
-    fixed:
-    - Minor bug with memory breaches.
-  date: 2025-01-22 04:02:27
-- bump: minor
-  changes:
-    added:
-    - Interest expenses.
-  date: 2025-01-24 11:18:33
-- bump: minor
-  changes:
-    fixed:
-    - Larger GH runner for data generation.
-  date: 2025-02-01 02:21:19
-- bump: patch
-  changes:
-    fixed:
-    - Apply the miscellaneous deduction imputation to the unreimbursed_business_employee_expenses
-      instead of the misc_deduction variable.
-  date: 2025-02-20 12:34:31
-- bump: minor
-  changes:
-    added:
-    - County FIPS dataset
-  date: 2025-03-27 22:58:46
-- bump: patch
-  changes:
-    changed:
-    - Explicitly specified encoding while building county FIPS dataset
-    removed:
-    - Unneeded build of county FIPS dataset to local folder
-  date: 2025-03-28 18:07:01
-- bump: patch
-  changes:
-    added:
-    - Non-downsampled versions of the 2021, 2022, and 2023 CPS datasets
-    changed:
-    - Modified downsampling method within CPS base dataset class
-    - Pooled 3-Year CPS generation uses the non-downsampled versions of the 2021,
-      2022, and 2023 CPS datasets
-    - Downsampling method attempts to preserve original dtype values
-  date: 2025-04-22 18:24:44
-- bump: minor
-  changes:
-    added:
-    - Tip income.
-  date: 2025-05-13 12:48:06
-- bump: minor
-  changes:
-    added:
-    - Calibration of the QBID tax expenditure.
-  date: 2025-05-13 13:29:57
-- bump: patch
-  changes:
-    fixed:
-    - Data downloads for Census datasets disabled.
-    - Warning added for downsampling non-existent policyengine-[country] variables.
-  date: 2025-05-14 13:31:21
-- bump: minor
-  changes:
-    added:
-    - SSN card type implementation for CPS dataset.
-    - Calibration of undocumented population to 10.1 million based on Pew Research
-      data.
-  date: 2025-05-14 14:15:06
-- bump: minor
-  changes:
-    added:
-    - scf package loading module
-    - auto loan balance imputation notebook
-  date: 2025-05-14 14:29:32
-- bump: patch
-  changes:
-    fixed:
-    - Runtime for tests reduced.
-  date: 2025-05-19 07:52:35
-- bump: patch
-  changes:
-    fixed:
-    - Upload to GCP on dataset build.
-  date: 2025-05-19 15:34:43
-- bump: patch
-  changes:
-    fixed:
-    - GCP uploads use permissions correctly
-  date: 2025-05-20 10:37:41
-- bump: patch
-  changes:
-    changed:
-    - Methodology to directly impute auto loan interest instead of assuming a 2% interest
-      rate on auto loan balance.
-  date: 2025-05-22 10:56:32
-- bump: minor
-  changes:
-    added:
-    - Auto loan balance variable to cps.
-  date: 2025-05-23 15:00:34
-- bump: minor
-  changes:
-    added:
-    - Hours worked last week variable.
-  date: 2025-05-26 10:43:04
-- bump: patch
-  changes:
-    added:
-    - Versioning to dataset uploads.
-  date: 2025-05-26 21:57:26
-- bump: patch
-  changes:
-    fixed:
-    - Tests run after versioning.
-  date: 2025-05-26 22:01:07
-- bump: patch
-  changes:
-    fixed:
-    - Missing HF token.
-  date: 2025-05-26 22:11:20
-- bump: minor
-  changes:
-    added:
-    - Net worth variable to cps.
-  date: 2025-06-09 10:44:59
-- bump: minor
-  changes:
-    added:
-    - Source for net worth calibration.
-  date: 2025-06-09 11:46:29
-- bump: minor
-  changes:
-    added:
-    - Add ACA and Medicaid take-up rates.
-  date: 2025-06-11 22:28:55
-- bump: patch
-  changes:
-    fixed:
-    - Increase tolerance for auto loan interest and balance test.
-  date: 2025-06-12 16:59:41
-- bump: patch
-  changes:
-    added:
-    - Join wealth and auto loan interest imputations.
-  date: 2025-06-13 11:06:01
-- bump: patch
-  changes:
-    fixed:
-    - Adjust take-up seed variables.
-  date: 2025-06-13 14:46:04
-- bump: patch
-  changes:
-    fixed:
-    - Data length in the take-up variables.
-  date: 2025-06-13 16:30:39
-- bump: minor
-  changes:
-    added:
-    - Change ACA Marketplace variable to use current coverage instead of any coverage
-      within the last year.
-  date: 2025-06-14 20:36:59
-- bump: patch
-  changes:
-    added:
-    - ACA and Medicaid calibration targets.
-  date: 2025-06-18 10:07:41
-- bump: minor
-  changes:
-    added:
-    - Synthetic, small ECPS data file.
-  date: 2025-06-18 12:31:13
-- bump: patch
-  changes:
-    added:
-    - Add test for small ECPS.
-  date: 2025-06-19 10:09:37
-- bump: patch
-  changes:
-    fixed:
-    - Small CPS is now 1000 households.
-  date: 2025-06-19 13:59:12
-- bump: minor
-  changes:
-    added:
-    - Added automated checks for changelog entry
-    - New "would be qualified income" variables simulated
-    - REIT, PTP, and BDC dividend income variables simulated
-    - UBIA property is being simulated
-    - Farm Operations Income added
-    changed:
-    - W2 Wages from Qualified business is now being simulated with random variables
-    - qualified business income sources have been redefined based on IRS PUF inputs
-  date: 2025-06-19 21:34:31
-- bump: minor
-  changes:
-    added:
-    - SSN card type imputation algorithm.
-    - Family correlation adjustment to align parent-child SSN status.
-  date: 2025-06-23 14:48:18
-- bump: patch
-  changes:
-    added:
-    - State age targets.
-  date: 2025-07-01 13:28:38
-- bump: minor
-  changes:
-    added:
-    - State agi calibration targets.
-  date: 2025-07-01 14:51:09
-- bump: patch
-  changes:
-    fixed:
-    - Use full CPS by default.
-  date: 2025-07-01 16:54:09
-- bump: patch
-  changes:
-    fixed:
-    - Increased epochs back to 5k.
-    - Disabled hyperparameter tuning for imputation models.
-  date: 2025-07-01 19:02:50
-- bump: patch
-  changes:
-    fixed:
-    - Bug in hyperparameter tuning.
-  date: 2025-07-01 19:15:43
-- bump: minor
-  changes:
-    added:
-    - State real estate taxes calibration targets.
-  date: 2025-07-01 20:10:32
-- bump: patch
-  changes:
-    changed:
-    - Calibration epochs reduced to 500.
-  date: 2025-07-01 22:12:13
-- bump: minor
-  changes:
-    added:
-    - Normalisation of national and state targets.
-  date: 2025-07-01 23:42:47
-- bump: patch
-  changes:
-    fixed:
-    - Imputed non-CPS income variables from the PUF.
-  date: 2025-07-02 15:00:11
-- bump: patch
-  changes:
-    changed:
-    - Epochs increased to 1k.
-  date: 2025-07-02 15:31:46
-- bump: minor
-  changes:
-    added:
-    - State SNAP calibration targets.
-  date: 2025-07-03 03:03:06
-- bump: patch
-  changes:
-    changed:
-    - PR tests to be more similar to production builds.
-  date: 2025-07-03 09:21:06
-- bump: patch
-  changes:
-    fixed:
-    - Use SURVIVING_SPOUSE and is_surviving_spouse instead of WIDOW and is_widowed.
-  date: 2025-07-08 21:53:02
-- bump: minor
-  changes:
-    added:
-    - Medicaid state level calibration targets.
-  date: 2025-07-09 14:58:33
-- bump: patch
-  changes:
-    changed:
-    - bad targets (causing problems with estimation) removed
-    - lite mode now builds CPS_2023 in addition to CPS_2024
-    - gave reweight an epochs argument and set it at 150 for optimization
-    - updating minimum versions on policyengine-us and pandas dependencies
-    - getting rid of non-working manual workflow code
-  date: 2025-07-14 15:33:11
-- bump: minor
-  changes:
-    changed:
-    - Removed github download capability
-    - Changed download option for soi.csv and np2023_d5_mid.csv to Hugging Face
-  date: 2025-07-16 01:01:25
-- bump: patch
-  changes:
-    fixed:
-    - Github pages deploy
-  date: 2025-07-17 20:07:31
-- bump: minor
-  changes:
-    added:
-    - l0 regularization as described in https://arxiv.org/abs/1712.01312
-  date: 2025-07-18 12:46:15
-- bump: patch
-  changes:
-    fixed:
-    - Edit and create files that pull SOI agi, ACS age, hardcoded and SNAP targets
-      to follow the same clean csv format.
-    - Track all csv files used by loss.py for backwards compatibility.
-  date: 2025-07-18 17:01:51
-- bump: patch
-  changes:
-    changed:
-    - Update microdf_python dependency to >=1.0.0.
-  date: 2025-07-22 21:03:38
-- bump: minor
-  changes:
-    added:
-    - Added Immigration status from SSN algorithm.
-  date: 2025-07-24 13:44:42
-- bump: patch
-  changes:
-    fixed:
-    - Clean up immigration status PR.
-  date: 2025-07-26 13:35:10
-- bump: minor
-  changes:
-    added:
-    - Python 3.13 support
-    changed:
-    - Simplified CI test matrix to only test on Python 3.13 and Ubuntu
-    - Updated policyengine-us to >=1.350.0 for Python 3.13 support
-    - Updated policyengine-core to >=3.19.0 for Python 3.13 support
-    - Updated microimpute from 0.1.4 to 1.0.1 for numpy 2.x compatibility
-    - Updated scipy dependency from <1.13 to >=1.15.3
-    - Updated pandas dependency from >=2.3.0 to >=2.3.1
-    - Updated statsmodels dependency from >=0.14.0 to >=0.14.5
-    - Added lower bounds to dependencies that were missing them
-  date: 2025-07-26 17:22:33
-- bump: patch
-  changes:
-    fixed:
-    - Increased Medicaid calibration tolerance to 100% to handle state-level noise
-  date: 2025-07-26 19:06:45
-- bump: patch
-  changes:
-    added:
-    - PyPI auto-publish workflow in GitHub Actions
-    fixed:
-    - README typo (installion -> installation)
-  date: 2025-07-26 20:53:26
-- bump: minor
-  changes:
-    added:
-    - Added creation script to build relational database for targets
-    - Refactored age targets load script to load the database
-  date: 2025-07-28 16:34:40
-- bump: patch
-  changes:
-    fixed:
-    - Removed leftover changelog entry from merged PR that was causing push CI failures
-    - Removed unused make_person function with undefined CURRENT_YEAR variable
-  date: 2025-07-30 18:19:07
-- bump: patch
-  changes:
-    fixed:
-    - Fixed push CI upload failure by using 'secrets: inherit' in reusable workflows
-  date: 2025-07-30 19:42:58
-- bump: patch
-  changes:
-    fixed:
-    - Made upload script more robust by only uploading files that exist
-    - Added logging to show which files are being uploaded vs skipped
-  date: 2025-07-30 20:28:05
-- bump: patch
-  changes:
-    added:
-    - Fork check in PR workflows to fail fast with clear error message
-    fixed:
-    - Fixed documentation deployment for MyST v2 by using timeout command
-  date: 2025-07-30 21:55:05
-- changes:
-    changed:
-    - New configuration for sparse solution (~20k non-zero households)
-    - added a seeding function to remove non-deterministic behavior in reweight
-    - Made np2023_d5_mid.csv a git ignorable file (it's in hugging face)
-  date: 2025-07-30 22:29:06
-- bump: patch
-  changes:
-    fixed:
-    - Fixed GitHub Pages documentation rendering by setting BASE_URL for MyST
-  date: 2025-07-30 22:43:44
-- bump: patch
-  changes:
-    fixed:
-    - Lite mode was used in production.
-  date: 2025-08-01 11:29:48
-- bump: minor
-  changes:
-    added:
-    - Pin -us to a version pre-OBBBA baseline changes were implemented.
-  date: 2025-08-04 18:52:21
-- bump: patch
-  changes:
-    fixed:
-    - Moved QRF implementation to microimpute package to avoid code duplication
-  date: 2025-08-05 10:23:02
-- bump: minor
-  changes:
-    added:
-    - Unpin -us.
-  date: 2025-08-06 19:01:03
-- bump: patch
-  changes:
-    changed:
-    - renamed "ucgid" to "ucgid_str" in age targets loading script and operation to
-      "in"
-    - removed [0.5] key access from imputation results as per microimpute's new output
-      format
-  date: 2025-08-08 10:19:16
-- bump: patch
-  changes:
-    fixed:
-    - Fixed GitHub Pages documentation by adding .nojekyll file to serve underscore-prefixed
-      directories
-  date: 2025-08-08 15:16:00
-- bump: minor
-  changes:
-    added:
-    - add SQLite database for calibration targets
-  date: 2025-08-20 18:44:07
-- bump: minor
-  changes:
-    added:
-    - Support for 2024 CPS ASEC data (March 2024 survey)
-    - CensusCPS_2024 class to download raw 2024 ASEC data
-    - CPS_2024 class using actual 2024 data instead of extrapolation
-    - CPS_2025 class with extrapolation from 2024 data
-    - DOCS_FOLDER constant to storage module for cleaner file paths
-    - Tests for CPS 2024 and 2025 datasets
-    changed:
-    - Fixed __file__ NameError in interactive Python environments
-    - Updated generate method to handle 2025 extrapolation from 2024
-  date: 2025-09-10 20:30:41
-- bump: patch
-  changes:
-    changed:
-    - GitHub Actions workflow now uses self-hosted GCP runner to handle memory-intensive
-      dataset builds
-  date: 2025-11-12 20:08:59
-- bump: minor
-  changes:
-    added:
-    - Additional calibration based on SSA Trustees data that extends projections until
-      2100
-    - Manual trigger capability for documentation deployment workflow
-    - Documentation for SSA data sources in storage README
-    changed:
-    - Renamed long-term projections notebook to clarify PWBM comparison scope (2025-2100)
-    fixed:
-    - GitHub Pages documentation deployment path
-    - Corrected number of imputed variables from 72 to 67 in documentation
-    - Corrected calibration target count from 7,000+ to 2,813 across all docs
-    - Removed inaccurate "two-stage" terminology in methodology descriptions
-  date: 2025-11-20 02:54:32
-- bump: patch
-  changes:
-    added:
-    - Node.js 24 LTS setup to CI workflow for MyST builds
-    - H6 Social Security reform calibration for long-term projections (phases out
-      OASDI taxation 2045-2054)
-    - H6 threshold crossover handling when OASDI thresholds exceed HI thresholds
-    - start_year parameter to run_household_projection.py CLI
-    - docs/README.md documenting MyST build output pitfall
-    fixed:
-    - GitHub Pages documentation deployment (was deploying wrong directory causing
-      blank pages)
-    - Removed timeout and error suppression from documentation build
-  date: 2025-12-03 23:00:20
-- bump: minor
-  changes:
-    added:
-    - Sparse matrix builder for local area calibration with database-driven constraints
-    - Local area calibration data pipeline (make data-local-area)
-    - ExtendedCPS_2023 and PUF_2023 dataset classes
-    - Stratified CPS sampling to preserve high-income households
-    - Matrix verification tests for local area calibration
-  date: 2025-12-08 19:52:21
-- bump: minor
-  changes:
-    added:
-    - SPM threshold calculation using policyengine/spm-calculator package
-    - New utility module (policyengine_us_data/utils/spm.py) for SPM calculations
-    changed:
-    - CPS datasets now calculate SPM thresholds using spm-calculator with Census-provided
-      geographic adjustments
-    - ACS datasets now calculate SPM thresholds using spm-calculator with national-level
-      thresholds
-  date: 2025-12-19 17:56:53
-- bump: minor
-  changes:
-    added:
-    - Added --use-tob flag for TOB (Taxation of Benefits) revenue calibration targeting
-      OASDI and HI trust fund revenue
-  date: 2025-12-23 15:15:35
-- bump: minor
-  changes:
-    added:
-    - Sparse matrix builder for local area calibration with database-driven constraints
-    - Local area calibration data pipeline (make data-local-area)
-    - ExtendedCPS_2023 and PUF_2023 dataset classes
-    - Stratified CPS sampling to preserve high-income households
-    - Matrix verification tests for local area calibration
-    - Population-weighted P(county|CD) distributions from Census block data
-    - County assignment module for stacked dataset builder
-  date: 2026-01-01 17:39:26
-- bump: patch
-  changes:
-    fixed:
-    - Fixed Publish workflow by migrating dev dependencies to PEP 735 dependency-groups
-  date: 2026-01-07 01:05:49
-- bump: minor
-  changes:
-    added:
-    - tests to verify SparseMatrixBuilder correctly calculates variables and constraints
-      into the calibration matrix.
-  date: 2026-01-22 20:50:13
-- bump: minor
-  changes:
-    changed:
-    - Added policyengine-claude plugin auto-install configuration.
-  date: 2026-01-23 20:51:58
-- bump: patch
-  changes:
-    changed:
-    - Bumped policyengine-core minimum version to 3.23.5 for pandas 3.0 compatibility
-  date: 2026-01-25 15:48:00
-- bump: minor
-  changes:
-    added:
-    - partnership_se_income variable from Schedule K-1 Box 14 (k1bx14p + k1bx14s),
-      representing partnership income subject to self-employment tax.
-  date: 2026-01-25 17:43:38
-- bump: patch
-  changes:
-    fixed:
-    - Derive partnership_se_income from PUF source columns using Yale Budget Lab's
-      gross-up approach instead of looking for non-existent k1bx14 columns.
-  date: 2026-01-26 02:49:11
-- bump: minor
-  changes:
-    added:
-    - Support for health_insurance_premiums_without_medicare_part_b in local area
-      calibration
-    changed:
-    - Removed dense reweighting path from enhanced CPS; only sparse (L0) weights are
-      produced
-    - Eliminated TEST_LITE and LOCAL_AREA_CALIBRATION flags; all datasets generated
-      unconditionally
-    - Merged data-local-area Makefile target into data target
-    fixed:
-    - Versioning workflow now runs uv lock after version bump to keep uv.lock in sync
-    removed:
-    - Redundant test_sparse_matrix_builder.py (tests consolidated in test_matrix_national_variation.py)
-    - Redundant build_calibration_matrix.py (functionality in fit_calibration_weights.py)
-  date: 2026-01-26 16:45:05
-- bump: minor
-  changes:
-    added:
-    - Census block-level geographic assignment for households in CD-stacked datasets
-    - Comprehensive geography variables in output (block_geoid, tract_geoid, cbsa_code,
-      sldu, sldl, place_fips, vtd, puma, zcta)
-    - Block crosswalk file mapping 8.1M blocks to all Census geographies
-    - Block-to-CD distribution file for population-weighted assignment
-    - ZCTA (ZIP Code Tabulation Area) lookup from census block
-  date: 2026-01-26 22:41:56
-- bump: minor
-  changes:
-    added:
-    - Added CPS_2024_Full class for full-sample 2024 CPS generation
-    - Added raw_cache utility for Census data caching
-    - Added atomic parallel local area H5 publishing with Modal Volume staging
-    - Added manifest validation with SHA256 checksums
-    - Added HuggingFace retry logic with exponential backoff to fix timeout errors
-    - Added staging folder approach for atomic HuggingFace deployments
-    - Added national targets ETL for CBO projections and tax expenditure data
-    - Added database hierarchy validation script
-    - Added stratum_group_id migration utilities
-    - Added db_metadata utilities for source and variable group management
-    - Added DATABASE_GUIDE.md with comprehensive calibration database documentation
-    changed:
-    - Migrated data pipeline from CPS 2023 to CPS 2024 (March 2025 ASEC)
-    - Updated ExtendedCPS_2024 to use new CPS_2024_Full (full sample)
-    - Updated local area calibration to use 2024 extended CPS data
-    - Updated database ETL scripts for strata, IRS SOI, Medicaid, and SNAP
-    - Expanded IRS SOI ETL with detailed income brackets and filing status breakdowns
-    fixed:
-    - Fixed cross-state recalculation in sparse matrix builder by adding time_period
-      to calculate() calls
-    removed:
-    - Removed CPS_2021_Full, CPS_2022_Full, CPS_2023_Full classes
-    - Removed PooledCPS and Pooled_3_Year_CPS_2023
-    - Removed ExtendedCPS_2023
-    - Removed dead train_previous_year_income_model function
-    - Removed unused dataset exports from __init__.py
-  date: 2026-01-31 03:18:20
-- bump: minor
-  changes:
-    added:
-    - weeks_unemployed variable from CPS ASEC LKWEEKS
-    - QRF-based imputation of weeks_unemployed for Extended CPS PUF copy
-  date: 2026-01-31 19:53:18
-- bump: minor
-  changes:
-    added:
-    - SSA benefit-type calibration targets for social_security_retirement, social_security_disability,
-      social_security_survivors, and social_security_dependents
-    - IRA contribution calibration targets for traditional_ira_contributions and roth_ira_contributions
-      from IRS SOI data
-    changed:
-    - Use CPS ASEC RESNSS1/RESNSS2 source codes to classify Social Security income
-      into retirement, disability, survivors, and dependents (replacing age-62 heuristic)
-    - Parameterize retirement contribution limits by year (2020-2025) instead of hardcoded
-      2022 values
-    - Update taxable pension fraction from 1.0 to 0.590 based on SOI 2015 Table 1.4
-    - Add age and is_male as QRF predictors for pension contribution imputation
-  date: 2026-01-31 19:54:59
-- bump: minor
-  changes:
-    changed:
-    - Use income_tax_positive instead of income_tax for CBO calibration target
-  date: 2026-01-31 19:57:29
-- bump: minor
-  changes:
-    added:
-    - Add state income tax calibration targets from Census STC FY2023 data
-  date: 2026-01-31 20:18:58
-- bump: patch
-  changes:
-    added:
-    - cps_2024.h5 to HuggingFace upload list so the raw (unenhanced) 2024 CPS dataset
-      is published
-  date: 2026-02-01 04:24:23
-- bump: patch
-  changes:
-    fixed:
-    - Fix etl_state_income_tax.py API mismatches with db_metadata utility functions
-  date: 2026-02-01 20:58:21
-- bump: minor
-  changes:
-    added:
-    - Name-based seeding (seeded_rng) for order-independent reproducibility
-    - State-specific Medicaid takeup rates (53%-99% range, 51 jurisdictions)
-    - SSI resource test pass rate parameter (0.4)
-    - WIC takeup and nutritional risk draw variables (float)
-    - meets_ssi_resource_test boolean generation
-    changed:
-    - Replaced shared RNG (seed=100) with per-variable name-based seeding
-    - Medicaid takeup now uses state-specific rates instead of uniform 93%
-  date: 2026-02-07 00:24:23
-- bump: minor
-  changes:
-    added:
-    - Add liquid asset imputation from SIPP (bank accounts, stocks, bonds) for SSI
-      and means-tested program modeling
-    - Add SSI takeup rate parameter and takes_up_ssi_if_eligible draw
-    removed:
-    - Remove random SSI resource test placeholder (now calculated from imputed assets
-      in policyengine-us)
-    - Remove ssi_pass_rate parameter (replaced by ssi takeup rate)
-  date: 2026-02-07 19:46:46
-- bump: patch
-  changes:
-    fixed:
-    - Immigration status mapping.
-  date: 2026-02-08 02:59:10
-- bump: minor
-  changes:
-    added:
-    - Add voluntary tax filer variable and filer count calibration targets by AGI
-      band.
-  date: 2026-02-08 04:15:49
-- bump: patch
-  changes:
-    added:
-    - promote-dataset Makefile target
-    - Year-mismatch warning in national targets ETL
-    - Congress-session constants and warning in SOI district puller
-    changed:
-    - Switch DEFAULT_DATASET to local storage path for database ETL scripts
-    - Extract shared etl_argparser() to reduce boilerplate across 7 ETL scripts
-    - Delete dead get_pseudo_input_variables() function
-  date: 2026-02-09 17:47:49
-- bump: minor
-  changes:
-    added:
-    - Entity aware target calculations for correct entity counts.
-    - Selection of targets closest to calibration time period and uprating logic for
-      cohesive and comprehensive time-period coverage.
-    - Hierarchical state-level uprating with CD reconciliation via hierarchy inconsistency
-      factors (HIFs) and state-specific uprating factors (e.g., CMS/KFF ACA PTC multipliers).
-    - stratum_domain and target_overview views for easier target inspection and debugging.
-    - test_schema_views_and_lookups.py for testing the new views and lookups.
-    - Calibration matrix diagnostic notebook (docs/calibration_matrix.ipynb).
-    removed:
-    - Redundant database fields and tables (variable_groups, variable_metadata,sources,
-      source_id, stratum_group_id).
-  date: 2026-02-12 04:48:34
-- bump: minor
-  changes:
-    added:
-    - Parallelization of data building steps.
-    - Checkpointing mechanism to resume data builds and testing modules from last
-      successful step in Modal runs.
-    changed:
-    - Removed duplicate run of test_local_area_calibration tests.
-    - Baked correct defaults into create_stratified_cps.py, removing hardcoded args
-      from Makefile and Modal build.
-    - DRYed up sequential build path to iterate SCRIPT_OUTPUTS instead of a redundant
-      list.
-    - Added thread-safe locking around volume.commit() for parallel checkpoint safety.
-  date: 2026-02-12 16:29:45
-- bump: minor
-  changes:
-    added:
-    - field_valid_values table in database as a source of truth for fields that have
-      semantic meaning external to the database hierarchy (variable, constraint_variable,
-      period, operation, active).
-    - Event listeners that raise an error if inconsistent operations or parent-child
-      relationships are attempted to be inserted into the database.
-    - Source field in target table.
-  date: 2026-02-12 18:56:57
-- bump: minor
-  changes:
-    added:
-    - Census-block-first calibration pipeline (calibration/ package) ported from PR
-    - Clone-and-assign module for population-weighted census block sampling
-    - Unified matrix builder with clone-by-clone simulation, COO caching, and target_overview-based
-      querying
-    - Unified calibration CLI with L0 optimization and seeded takeup re-randomization
-    - 28 new tests for the calibration pipeline
-    - Integration test for build_matrix geographic masking (national/state/CD)
-    - Tests for drop_target_groups utility
-    - voluntary_filing.yaml takeup rate parameter
-    changed:
-    - Rewrote local_area_calibration_setup.ipynb for clone-based pipeline
-    - Renamed _get_geo_level to get_geo_level (now cross-module public API)
-    fixed:
-    - Fix Jupyter import error in unified_calibration.py (OutStream.reconfigure moved
-      to main)
-    - Fix modal_app/remote_calibration_runner.py referencing deleted fit_calibration_weights.py
-    - Fix _coo_parts stale state bug on build_matrix re-call after failure
-    - Remove hardcoded voluntary_filing rate in favor of YAML parameter
-    removed:
-    - SparseMatrixBuilder, MatrixTracer, and fit_calibration_weights (replaced by
-      unified pipeline)
-    - 8 old SparseMatrixBuilder-dependent tests (replaced by new test_calibration
-      suite)
-  date: 2026-02-17 15:26:04
-- bump: minor
-  changes:
-    added:
-    - PUF clone + QRF imputation module (puf_impute.py) with state_fips predictor
-      and stratified subsample preserving top 0.5% by AGI
-    - ACS re-imputation module (source_impute.py) with state predictor; SIPP/SCF imputation
-      without state (surveys lack state identifiers)
-    - PUF and source impute integration into unified calibration pipeline (--puf-dataset,
-      --skip-puf, --skip-source-impute flags)
-    - 21 new tests for puf_impute and source_impute modules
-    - DC_STATEHOOD=1 environment variable set in storage/__init__.py to ensure DC
-      is included in state-based processing
-    changed:
-    - Refactored extended_cps.py to delegate to puf_impute.puf_clone_dataset() (443
-      -> 75 lines)
-    - PUF QRF training uses stratified subsample (20K target) instead of random subsample(10_000),
-      force-including high-income tail
-    - unified_calibration.py pipeline now supports optional source imputation and
-      PUF cloning steps
-  date: 2026-02-18 21:11:01
-- bump: patch
-  changes:
-    added:
-    - Add TANF takeup rate parameter (22%) and register takes_up_tanf_if_eligible
-      in the calibration pipeline's SIMPLE_TAKEUP_VARS.
-  date: 2026-02-19 06:08:37
-- bump: patch
-  changes:
-    changed:
-    - Bump policyengine-us to 1.570.7 to include TANF formula fixes and takes_up_tanf_if_eligible
-      variable for calibration.
-  date: 2026-02-19 13:41:26
-- bump: patch
-  changes:
-    fixed:
-    - Add TANF takeup (22%) assignment to CPS data pipeline so takes_up_tanf_if_eligible
-      is persisted in the dataset.
-  date: 2026-02-19 16:34:50
diff --git a/pyproject.toml b/pyproject.toml
index b2cef0f13..9e1fa5320 100644
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