Add checksums

Author: lauraporta

derotation/sample_data.py

@@ -16,12 +16,20 @@
 DATA_DIR = Path("~", ".derotation", "data").expanduser()
 DATA_DIR.mkdir(parents=True, exist_ok=True)
 
-# File registry without checksums (just for file validation)
+# File registry with SHA256 checksums for data integrity validation
 REGISTRY = {
-    "angles_per_line.npy": None,
-    "rotation_sample.tif": None,
-    "analog_signals.npy": None,
-    "stimulus_randperm.csv": None,
+    "angles_per_line.npy": (
+        "0a5dab081acdfb47ebd5cdda4094cc622b1ff708c63f6fadc1e7898d30789896"
+    ),
+    "rotation_sample.tif": (
+        "ad8aae61cda9495d9006fb37a1f87be8b6dd6477318b1e8a409417cace208f56"
+    ),
+    "analog_signals.npy": (
+        "e04437f86d07db8077c256f912e2bcca75794712d66715f301b99cd9a8d66d95"
+    ),
+    "stimulus_randperm.csv": (
+        "214617992d786ee210a7d2f22dbe7420997016846a79c673979913a5b77f0a11"
+    ),
 }
 
 # Create a download manager