feat: rebuild as multi-user web agent

tests/test_config.py

@@ -0,0 +1,8 @@
+from dataclasses import replace
+
+import pytest
+
+
+def test_internal_secrets_must_be_at_least_32_bytes(settings) -> None:
+    with pytest.raises(RuntimeError, match="at least 32 bytes"):
+        replace(settings, internal_gateway_key="too-short").validate_gateway()