docs: clarify videodb reference guides

skills/videodb/reference/api-reference.md

@@ -1,5 +1,7 @@
 # Complete API Reference
 
+Reference material for the VideoDB skill. For usage guidance and workflow selection, start with [../SKILL.md](../SKILL.md).
+
 ## Connection
 
 ```python

skills/videodb/reference/rtstream-reference.md

@@ -1,6 +1,7 @@
 # RTStream Reference
 
 Code-level details for RTStream operations. For workflow guide, see [rtstream.md](rtstream.md).
+For usage guidance and workflow selection, start with [../SKILL.md](../SKILL.md).
 
 Based on [docs.videodb.io](https://docs.videodb.io/pages/ingest/live-streams/realtime-apis.md).
 

skills/videodb/scripts/ws_listener.py

@@ -184,7 +184,7 @@ async def main_async():
     listen_task = asyncio.create_task(listen_with_retry())
     shutdown_task = asyncio.create_task(shutdown_event.wait())
     
-    done, pending = await asyncio.wait(
+    _done, pending = await asyncio.wait(
         [listen_task, shutdown_task],
         return_when=asyncio.FIRST_COMPLETED,
     )