Fix ModuleNotFoundError: add sys.path setup before modal_app.images import

Modal containers don't have the repo root on sys.path by default,
so `from modal_app.images import ...` fails. Add the same sys.path
fix that pipeline.py already uses for its cross-module imports.

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

Author: baogorek

modal_app/data_build.py

@@ -11,6 +11,15 @@
 
 import modal
 
+import sys as _sys
+from pathlib import Path as _Path
+
+_baked = "/root/policyengine-us-data"
+_local = str(_Path(__file__).resolve().parent.parent)
+for _p in (_baked, _local):
+    if _p not in _sys.path:
+        _sys.path.insert(0, _p)
+
 from modal_app.images import cpu_image as image
 
 app = modal.App("policyengine-us-data")

modal_app/local_area.py

@@ -18,6 +18,14 @@
 from pathlib import Path
 from typing import List, Dict
 
+import sys as _sys
+
+_baked = "/root/policyengine-us-data"
+_local = str(Path(__file__).resolve().parent.parent)
+for _p in (_baked, _local):
+    if _p not in _sys.path:
+        _sys.path.insert(0, _p)
+
 from modal_app.images import cpu_image as image
 
 app = modal.App("policyengine-us-data-local-area")

modal_app/pipeline.py

@@ -44,6 +44,13 @@
 from typing import Optional
 
 import modal
+import sys as _sys
+
+_baked = "/root/policyengine-us-data"
+_local = str(Path(__file__).resolve().parent.parent)
+for _p in (_baked, _local):
+    if _p not in _sys.path:
+        _sys.path.insert(0, _p)
 
 from modal_app.images import cpu_image as image
 

modal_app/remote_calibration_runner.py

@@ -2,6 +2,15 @@
 import subprocess
 import modal
 
+import sys as _sys
+from pathlib import Path as _Path
+
+_baked = "/root/policyengine-us-data"
+_local = str(_Path(__file__).resolve().parent.parent)
+for _p in (_baked, _local):
+    if _p not in _sys.path:
+        _sys.path.insert(0, _p)
+
 from modal_app.images import gpu_image as image
 
 app = modal.App("policyengine-us-data-fit-weights")