Fix compacting

compact_atc_chains.py

@@ -44,8 +44,14 @@ def compact_chains(data: object) -> list[list[object]]:
     compact: list[list[object]] = []
 
     for chain in chains:
+        if isinstance(chain, list):
+            if len(chain) != 3:
+                raise ValueError("Invalid compact chain entry")
+            compact.append(chain)
+            continue
+
         if not isinstance(chain, dict):
-            raise ValueError("Expected verbose chain objects as input")
+            raise ValueError("Expected verbose or compact chain entries as input")
 
         items = chain.get("items")
         if not isinstance(items, list) or not items:
@@ -76,7 +82,7 @@ def main() -> int:
     path = Path(args.path)
     original_text = path.read_text(encoding="utf-8")
     data = json.loads(original_text)
-    compact = compact_chains(data)
+    compact = {"chains": compact_chains(data)}
     compact_text = json.dumps(compact, separators=(",", ":"))
     path.write_text(compact_text, encoding="utf-8")