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/commands/workflows/plan.md

@@ -36,11 +36,19 @@ ls -la docs/brainstorms/*.md 2>/dev/null | head -10
 - If multiple candidates match, use the most recent one
 
 **If a relevant brainstorm exists:**
-1. Read the brainstorm document
-2. Announce: "Found brainstorm from [date]: [topic]. Using as context for planning."
-3. Extract key decisions, chosen approach, and open questions
-4. **Skip the idea refinement questions below** - the brainstorm already answered WHAT to build
-5. Use brainstorm decisions as input to the research phase
+1. Read the brainstorm document **thoroughly** — every section matters
+2. Announce: "Found brainstorm from [date]: [topic]. Using as foundation for planning."
+3. Extract and carry forward **ALL** of the following into the plan:
+   - Key decisions and their rationale
+   - Chosen approach and why alternatives were rejected
+   - Constraints and requirements discovered during brainstorming
+   - Open questions (flag these for resolution during planning)
+   - Success criteria and scope boundaries
+   - Any specific technical choices or patterns discussed
+4. **Skip the idea refinement questions below** — the brainstorm already answered WHAT to build
+5. Use brainstorm content as the **primary input** to research and planning phases
+6. **Critical: The brainstorm is the origin document.** Throughout the plan, reference specific decisions with `(see brainstorm: docs/brainstorms/<filename>)` when carrying forward conclusions. Do not paraphrase decisions in a way that loses their original context — link back to the source.
+7. **Do not omit brainstorm content** — if the brainstorm discussed it, the plan must address it (even if briefly). Scan each brainstorm section before finalizing the plan to verify nothing was dropped.
 
 **If multiple brainstorms could match:**
 Use **AskUserQuestion tool** to ask which brainstorm to use, or whether to proceed without one.
@@ -180,6 +188,7 @@ title: [Issue Title]
 type: [feat|fix|refactor]
 status: active
 date: YYYY-MM-DD
+origin: docs/brainstorms/YYYY-MM-DD-<topic>-brainstorm.md  # if originated from brainstorm, otherwise omit
 ---
 
 # [Issue Title]
@@ -207,8 +216,9 @@ class Test
 end
 ```
 
-## References
+## Sources
 
+- **Origin brainstorm:** [docs/brainstorms/YYYY-MM-DD-<topic>-brainstorm.md](path) — include if plan originated from a brainstorm
 - Related issue: #[issue_number]
 - Documentation: [relevant_docs_url]
 ````
@@ -233,6 +243,7 @@ title: [Issue Title]
 type: [feat|fix|refactor]
 status: active
 date: YYYY-MM-DD
+origin: docs/brainstorms/YYYY-MM-DD-<topic>-brainstorm.md  # if originated from brainstorm, otherwise omit
 ---
 
 # [Issue Title]
@@ -277,8 +288,9 @@ date: YYYY-MM-DD
 
 [What could block or complicate this]
 
-## References & Research
+## Sources & References
 
+- **Origin brainstorm:** [docs/brainstorms/YYYY-MM-DD-<topic>-brainstorm.md](path) — include if plan originated from a brainstorm
 - Similar implementations: [file_path:line_number]
 - Best practices: [documentation_url]
 - Related PRs: #[pr_number]
@@ -306,6 +318,7 @@ title: [Issue Title]
 type: [feat|fix|refactor]
 status: active
 date: YYYY-MM-DD
+origin: docs/brainstorms/YYYY-MM-DD-<topic>-brainstorm.md  # if originated from brainstorm, otherwise omit
 ---
 
 # [Issue Title]
@@ -416,7 +429,11 @@ date: YYYY-MM-DD
 
 [What docs need updating]
 
-## References & Research
+## Sources & References
+
+### Origin
+
+- **Brainstorm document:** [docs/brainstorms/YYYY-MM-DD-<topic>-brainstorm.md](path) — include if plan originated from a brainstorm. Key decisions carried forward: [list 2-3 major decisions from brainstorm]
 
 ### Internal References
 
@@ -495,6 +512,16 @@ end
 
 ### 6. Final Review & Submission
 
+**Brainstorm cross-check (if plan originated from a brainstorm):**
+
+Before finalizing, re-read the brainstorm document and verify:
+- [ ] Every key decision from the brainstorm is reflected in the plan
+- [ ] The chosen approach matches what was decided in the brainstorm
+- [ ] Constraints and requirements from the brainstorm are captured in acceptance criteria
+- [ ] Open questions from the brainstorm are either resolved or flagged
+- [ ] The `origin:` frontmatter field points to the brainstorm file
+- [ ] The Sources section includes the brainstorm with a summary of carried-forward decisions
+
 **Pre-submission Checklist:**
 
 - [ ] Title is searchable and descriptive