feat: bell-tower favicon, lfx-clean flows, branded HTML mail

backend/tests/test_lfx_validate.py

@@ -0,0 +1,34 @@
+"""Canonical flows must pass lfx's strict validator (level 4).
+
+Guards the source-of-truth directory against authoring mistakes: the
+input_schema parser and the LFX runtime both assume well-formed exports.
+Runs `lfx validate --level 4` (the dev dep, same minor as Langflow).
+"""
+
+import subprocess
+import sys
+from pathlib import Path
+
+FLOW_DIR = Path(__file__).resolve().parent.parent / "flows"
+
+
+def test_canonical_flows_pass_lfx_validate():
+    files = sorted(FLOW_DIR.glob("*.json"))
+    assert files, "no canonical flows found"
+    process = subprocess.run(
+        [
+            sys.executable,
+            "-m",
+            "lfx",
+            "validate",
+            "--level",
+            "4",
+            *[str(f) for f in files],
+        ],
+        capture_output=True,
+        text=True,
+        timeout=300,
+    )
+    assert process.returncode == 0, (
+        f"lfx validate failed:\n{process.stdout}\n{process.stderr}"
+    )