Removed legacy transcript artifact aliases

docs/config.md

@@ -224,9 +224,6 @@ Defaults listed here are effective runtime defaults after load.
 Allowed `pipeline.scriptorium.artifacts.<name>.inputs.<key>.source` values:
 
 - `previous_session_artifact`
-- `processed_transcript`
-- `normalized_transcript`
-- `trimmed_transcript`
 - `narratio.transcript.merged`
 - `narratio.transcript.polished`
 - `narratio.transcript.full`