Improve debug mode

app/httpsig.py

@@ -130,6 +130,7 @@ async def _get_public_key(db_session: AsyncSession, key_id: str) -> Key:
         k.load_pub(actor["publicKey"]["publicKeyPem"])
 
     # Ensure the right key was fetch
+    # TODO: some server have the key ID `http://` but fetching it return `https`
     if key_id not in [k.key_id(), k.owner]:
         raise ValueError(
             f"failed to fetch requested key {key_id}: got {actor['publicKey']}"