release: v2.35.2 — brainstorm-to-plan traceability

- Strengthen brainstorm intake: thorough read, carry ALL content, reference source inline
- Add origin: frontmatter field to all three plan templates (MINIMAL, MORE, A LOT)
- Rename References to Sources sections, add brainstorm as first entry
- Add brainstorm cross-check checklist in final review step

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

.claude-plugin/marketplace.json

@@ -12,7 +12,7 @@
     {
       "name": "compound-engineering",
       "description": "AI-powered development tools that get smarter with every use. Make each unit of engineering work easier than the last. Includes 29 specialized agents, 22 commands, and 19 skills.",
-      "version": "2.34.0",
+      "version": "2.35.2",
       "author": {
         "name": "Kieran Klaassen",
         "url": "https://github.com/kieranklaassen",