Finalize artifact workflow documentation

docs/cli.md

@@ -293,9 +293,11 @@ and precedence.
 ## `--artifacts` Selection Rules
 
 - accepted on `run`, `session plan`, `run-stage`, `analyze`, and `publish`;
+- repeatable and comma-separated values are combined, surrounding whitespace
+  is removed, and duplicate names are collapsed;
 - names must exist in `pipeline.scriptorium.artifacts`;
 - empty entries are invalid;
-- repeated names are deduplicated.
+- on `run-stage`, only `analyze` and `publish` accept the option.
 
 Effects:
 
@@ -332,6 +334,12 @@ Force publish only:
 narratio publish 2026-04-04
 ```
 
+Regenerate post-transcript artifacts without publishing:
+
+```bash
+narratio regenerate-artifacts 2026-04-04 --artifacts session_recap,player_handout
+```
+
 ## Output And Exit Behavior
 
 - Successful commands write their result or summary to standard output and