Keep PR1 scoped to partitioning

Author: anth-volk

policyengine_us_data/calibration/local_h5/__init__.py

@@ -1,10 +1,6 @@
 """Internal package for the incremental local H5 migration.
 
-The initial migration surface is intentionally small:
-
-- ``requests.py`` for typed area request values
-- ``partitioning.py`` for pure worker chunking helpers
-
-Later modules should be added only when they become active runtime
-boundaries rather than speculative contract placeholders.
+Modules in this package should land only when they become active runtime
+seams rather than speculative placeholders. The first migration slice
+introduces only ``partitioning.py``.
 """