diff --git a/plugins/ultraplan-local/commands/ultraplan-local.md b/plugins/ultraplan-local/commands/ultraplan-local.md
index 6f11ce9..a4b473c 100644
--- a/plugins/ultraplan-local/commands/ultraplan-local.md
+++ b/plugins/ultraplan-local/commands/ultraplan-local.md
@@ -168,6 +168,46 @@ Project: {project_dir or "-"}
 Research: {N local briefs, M extra via --research}
 ```
 
+### When the input is type:ultrareview (Handover 6)
+
+The brief input may be a `review.md` produced by `/ultrareview-local`
+instead of a `brief.md` produced by `/ultrabrief-local`. Both files
+share the same handover slot — `type` is the discriminator.
+
+If `fm.type === 'ultrareview'`:
+
+  1. Skip the `research_status` gate above (review.md has no
+     `research_topics` and no Research Plan section).
+  2. Extract the `findings` array from the frontmatter — this is the
+     list of 40-char hex finding-IDs the review surfaced.
+  3. Read the body's last fenced ```json``` block to recover the full
+     finding objects (the frontmatter only has IDs; the JSON has the
+     `severity`, `file`, `line`, `rule_key`, `title`, `detail`,
+     `recommended_action` payload).
+  4. Filter findings to severity ∈ `{BLOCKER, MAJOR}`. MINOR and
+     SUGGESTION are skipped for v1.0 plan-input — they are advisory
+     only and would inflate the plan with low-priority churn.
+  5. Treat each remaining finding as a plan goal:
+     - `recommended_action` → step intent
+     - `file` → primary `Files:` target
+     - `id` → goes into the plan's `source_findings:` frontmatter list
+  6. When writing `plan.md`, populate the frontmatter field
+     `source_findings: [<id1>, <id2>, ...]` containing exactly the IDs
+     of the BLOCKER + MAJOR findings consumed. The list provides the
+     audit trail back to `review.md`.
+  7. Use **block-style YAML** for the `source_findings:` list. The
+     frontmatter parser at `lib/util/frontmatter.mjs` does not support
+     flow-style arrays; `source_findings: [a, b]` is broken — use:
+     ```yaml
+     source_findings:
+       - 0123456789abcdef0123456789abcdef01234567
+       - fedcba9876543210fedcba9876543210fedcba98
+     ```
+
+`source_findings:` is **additive and optional** — plans produced from a
+`type: brief` input simply omit the field. No `plan_version` bump is
+required for this addition (backwards compatible).
+
 ## Phase 1.5 — Export (runs only when mode = export)
 
 **Skip this phase entirely unless mode = export.**
diff --git a/plugins/ultraplan-local/templates/plan-template.md b/plugins/ultraplan-local/templates/plan-template.md
index 2bd355c..d7c3fbf 100644
--- a/plugins/ultraplan-local/templates/plan-template.md
+++ b/plugins/ultraplan-local/templates/plan-template.md
@@ -1,3 +1,19 @@
+<!--
+Optional YAML frontmatter — include ONLY when the plan was generated from a
+`type: ultrareview` input (Handover 6). Lists the 40-char hex IDs of the
+BLOCKER + MAJOR findings consumed from `review.md`. Use block-style YAML;
+the frontmatter parser does not support flow-style arrays.
+
+Plans generated from a `type: brief` input omit this block entirely. No
+plan_version bump — the field is additive and backwards compatible.
+
+---
+source_findings:
+  - 0123456789abcdef0123456789abcdef01234567
+  - fedcba9876543210fedcba9876543210fedcba98
+---
+-->
+
 # {Task Title}
 
 > **Plan quality: {grade}** ({score}/100) — {APPROVE | APPROVE_WITH_NOTES | REVISE | REPLAN}