Add channel material and downtime analytics

tests/conftest.py

@@ -0,0 +1,21 @@
+"""Shared test adaptations for the production PostgreSQL schema."""
+
+import re
+from pathlib import Path
+
+import pytest
+
+
+@pytest.fixture(scope="session")
+def sqlite_schema() -> str:
+    """Keep PostgreSQL DDL authoritative; adapt JSON storage and clock for SQLite.
+
+    SQLite stores serialized JSON as text. These tests exercise schema and INSERT
+    semantics, not PostgreSQL JSONB operators or TimescaleDB behavior.
+    """
+    schema = (Path(__file__).resolve().parents[1] / "db" / "schema.sql").read_text(
+        encoding="utf-8"
+    )
+    schema = re.sub(r"::jsonb\b", "", schema)
+    schema = re.sub(r"\bjsonb\b", "text", schema)
+    return schema.replace("DEFAULT now()", "DEFAULT CURRENT_TIMESTAMP")