Run PostgreSQL and Cassandra integration tests and deploy Compose stack

scripts/init_cassandra.py

@@ -0,0 +1,20 @@
+"""Initialize the single-datacenter test cluster using the checked-in CQL schema."""
+
+import os
+from pathlib import Path
+
+from cassandra.cluster import Cluster
+
+cluster = Cluster([os.getenv("CASSANDRA_HOST", "cassandra")], connect_timeout=10)
+try:
+    session = cluster.connect()
+    schema = Path("/app/deploy/cassandra.cql").read_text()
+    schema = "\n".join(
+        line for line in schema.splitlines() if not line.startswith("--")
+    )
+    for statement in schema.split(";"):
+        if statement.strip():
+            session.execute(statement, timeout=30)
+    print("Cassandra test schema initialized")
+finally:
+    cluster.shutdown()