Fix three unit test collection errors

- Pass HUGGING_FACE_TOKEN to unit test step in pr.yaml so tests that
  transitively import huggingface.py can collect without crashing
- Fix test_etl_national_targets.py: remove nonexistent
  TAX_EXPENDITURE_REFORM_ID import, use reform_id > 0 filter instead
  (mirrors fix from unmerged PR #664)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: anth-volk

.github/workflows/pr.yaml

@@ -70,6 +70,8 @@ jobs:
       - name: Install package
         run: uv sync --dev
       - name: Run unit tests with coverage
+        env:
+          HUGGING_FACE_TOKEN: ${{ secrets.HUGGING_FACE_TOKEN }}
         run: >
           uv run pytest policyengine_us_data/tests/unit/
           --cov=policyengine_us_data

policyengine_us_data/tests/unit/test_etl_national_targets.py

@@ -8,7 +8,6 @@
     create_database,
 )
 from policyengine_us_data.db.etl_national_targets import (
-    TAX_EXPENDITURE_REFORM_ID,
     load_national_targets,
 )
 
@@ -90,13 +89,15 @@ def test_load_national_targets_deactivates_stale_baseline_rows(tmp_path, monkeyp
     tax_expenditure_df = pd.DataFrame(
         [
             {
+                "reform_id": 1,
                 "variable": "salt_deduction",
                 "value": 21.247e9,
                 "source": "Joint Committee on Taxation",
                 "notes": "SALT deduction tax expenditure",
                 "year": 2024,
             },
             {
+                "reform_id": 5,
                 "variable": "qualified_business_income_deduction",
                 "value": 63.1e9,
                 "source": "Joint Committee on Taxation",
@@ -124,16 +125,12 @@ def test_load_national_targets_deactivates_stale_baseline_rows(tmp_path, monkeyp
         assert stale_rows
         assert all(not target.active for target in stale_rows)
 
-        reform_rows = (
-            session.query(Target)
-            .filter(Target.reform_id == TAX_EXPENDITURE_REFORM_ID)
-            .all()
-        )
+        reform_rows = session.query(Target).filter(Target.reform_id > 0).all()
         assert len(reform_rows) == 2
         assert all(target.active for target in reform_rows)
-        assert {target.variable for target in reform_rows} == {
-            "salt_deduction",
-            "qualified_business_income_deduction",
+        assert {(target.variable, target.reform_id) for target in reform_rows} == {
+            ("salt_deduction", 1),
+            ("qualified_business_income_deduction", 5),
         }
         assert all(
             "Modeled as repeal-based income tax expenditure target"