Add typed local H5 request construction

.github/workflows/pipeline.yaml

@@ -51,8 +51,8 @@ jobs:
         with:
           python-version: "3.14"
 
-      - name: Install Modal
-        run: pip install modal
+      - name: Install Modal Runner Deps
+        run: pip install modal pandas
 
       - name: Deploy and launch pipeline on Modal
         env:

changelog.d/749.changed.md

@@ -0,0 +1,3 @@
+Introduced typed local H5 request construction with `AreaBuildRequest`,
+`AreaFilter`, and `USAreaCatalog`, while keeping the worker's legacy
+`--work-items` path available for backward compatibility.

modal_app/local_area.py

@@ -553,6 +553,12 @@ def validate_staging(branch: str, run_id: str, version: str = "") -> Dict:
     if not version:
         version = run_id.split("_", 1)[0]
 
+    # PR 9 migration note:
+    # The coordinator still enumerates states, districts, and cities inline
+    # and emits legacy work_items. This is intentionally temporary for the
+    # dual-path migration. The target cleanup is to delegate regional request
+    # enumeration to USAreaCatalog and send typed --requests-json payloads to
+    # workers so area construction no longer lives in the coordinator.
     result = subprocess.run(
         [
             "uv",

modal_app/pipeline.py

@@ -489,6 +489,7 @@ def _write_validation_diagnostics(
         csv_columns = [
             "area_type",
             "area_id",
+            "display_name",
             "district",
             "variable",
             "target_name",