Add feature roadmap and implementation plan for a D&D combat turn extraction module

docs/roadmap/future.md

@@ -18,9 +18,9 @@ not as committed release dates.
 
 ### Add Sequential D&D Artifacts
 
-- Add combat-turn extraction with explicit event and source-reference
-  semantics. Use earlier NPC output as a reference to improve participant
-  identity and consistency.
+- The next proposed increment is
+  [D&D combat-turn extraction](dnd-combat-turn-extraction.md), using earlier NPC
+  output as an explicit identity reference while preserving independent runs.
 - Add narrative extraction for scene summaries, party actions, and NPCs
   encountered when that output proves useful beyond the dedicated NPC artifact.
 - Define the preferred operational sequence for independent pipelines on the