Remove invalid promotion_history dimension (schema allows maturity axes only).

registry/capabilities/capability.communication.markitect-legacy-platform.md

@@ -89,13 +89,7 @@ consumer_guidance:
     capability.communication.context-engine (knowledge-operations runtime)
   known_limitations:
   - actively being split apart; treat as reference/legacy, not a forward-looking target
-promotion_history:
-- date: "2026-07-07"
-  dimension: relations
-  from: "(none)"
-  to: "markitect-toolkit, infospace-workspace, context-engine"
-  rationale: REUSE-WP-0017-T05 entry-3 review — wire successor capability IDs for planner routing.
-  author: grok
+promotion_history: []
 ---
 
 # MarkiTect Legacy Platform