diff --git a/AGENTS.md b/AGENTS.md
index c1e5595fc..e5b78ba0d 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -19,6 +19,7 @@ Invoke them by name (e.g., `/office-hours`).
 | `/plan-design-review` | Rate each design dimension 0-10, explain what a 10 looks like. |
 | `/plan-devex-review` | DX-mode review: TTHW, magical moments, friction points, persona traces. |
 | `/plan-tune` | Self-tune AskUserQuestion sensitivity per question. |
+| `/plan-rollout` | Post-decision: analyze the real diff and write `decomposition.md`. |
 | `/autoplan` | One command runs CEO → design → eng → DX review. |
 | `/design-consultation` | Build a complete design system from scratch. |
 
diff --git a/docs/skills.md b/docs/skills.md
index b20bf665d..1ff072e27 100644
--- a/docs/skills.md
+++ b/docs/skills.md
@@ -8,6 +8,7 @@ Detailed guides for every gstack skill — philosophy, workflow, and examples.
 | [`/plan-ceo-review`](#plan-ceo-review) | **CEO / Founder** | Rethink the problem. Find the 10-star product hiding inside the request. Four modes: Expansion, Selective Expansion, Hold Scope, Reduction. |
 | [`/plan-eng-review`](#plan-eng-review) | **Eng Manager** | Lock in architecture, data flow, diagrams, edge cases, and tests. Forces hidden assumptions into the open. |
 | [`/plan-design-review`](#plan-design-review) | **Senior Designer** | Interactive plan-mode design review. Rates each dimension 0-10, explains what a 10 looks like, fixes the plan. Works in plan mode. |
+| [`/plan-rollout`](#plan-rollout) | **Decomposition Analyst** | Post-decision artifact: analyzes a real working diff (and `SYSTEM.md` if present), writes `decomposition.md` with per-slice file lists, reader-time estimates, and reconciliation flags. Pairs with `/plan-pull-request` (decide) → `/plan-rollout` (analyze). |
 | [`/design-consultation`](#design-consultation) | **Design Partner** | Build a complete design system from scratch. Knows the landscape, proposes creative risks, generates realistic product mockups. Design at the heart of all other phases. |
 | [`/review`](#review) | **Staff Engineer** | Find the bugs that pass CI but blow up in production. Auto-fixes the obvious ones. Flags completeness gaps. |
 | [`/investigate`](#investigate) | **Debugger** | Systematic root-cause debugging. Iron Law: no fixes without investigation. Traces data flow, tests hypotheses, stops after 3 failed fixes. |