Initial commit

tests/conftest.py

@@ -0,0 +1,16 @@
+"""Pytest configuration and shared fixtures."""
+
+import pytest
+
+
+@pytest.fixture
+def sample_channel_key():
+    """A sample 16-byte channel key for testing."""
+    return bytes.fromhex("0123456789abcdef0123456789abcdef")
+
+
+@pytest.fixture
+def sample_hashtag_key():
+    """A channel key derived from hashtag name '#test'."""
+    import hashlib
+    return hashlib.sha256(b"#test").digest()[:16]