Fix dashboard-builder plugin version to match top-level 3.19.0

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: anth-volk

.claude-plugin/marketplace.json

@@ -235,7 +235,7 @@
       "description": "Orchestrated AI workflow for creating PolicyEngine dashboards from natural-language descriptions",
       "source": "./",
       "category": "development",
-      "version": "3.11.1",
+      "version": "3.19.0",
       "keywords": ["dashboard", "calculator", "interactive", "workflow", "orchestration", "react", "vercel"],
       "author": {
         "name": "PolicyEngine",