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>

plugins/compound-engineering/CHANGELOG.md

@@ -5,6 +5,14 @@ All notable changes to the compound-engineering plugin will be documented in thi
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.35.2] - 2026-02-20
+
+### Changed
+
+- **`/workflows:plan` brainstorm integration** — When plan finds a brainstorm document, it now heavily references it throughout. Added `origin:` frontmatter field to plan templates, brainstorm cross-check in final review, and "Sources" section at the bottom of all three plan templates (MINIMAL, MORE, A LOT). Brainstorm decisions are carried forward with explicit references (`see brainstorm: <path>`) and a mandatory scan before finalizing ensures nothing is dropped.
+
+---
+
 ## [2.35.1] - 2026-02-18
 
 ### Changed