diff --git a/extensions/gentle-ai.ts b/extensions/gentle-ai.ts
index dbae1730b..543a89e1f 100644
--- a/extensions/gentle-ai.ts
+++ b/extensions/gentle-ai.ts
@@ -1,5 +1,6 @@
 import { appendSystemPromptOnce } from "../lib/append-system-prompt.ts";
 import { consumeReviewMutation, pendingReviewMutation, recordReviewMutation } from "../lib/review-reminder-receipt.ts";
+import { createReviewSidebarPublisher } from "../lib/review-sidebar-state.ts";
 import { isOddPhase, oddPhaseRegistry, ODD_PHASES } from "../lib/odd-phase.ts";
 import { resolveSessionWorktree } from "../lib/session-worktree-registry.ts";
 import { declareReviewRelayHandshake } from "../lib/review-relay-contract.ts";
@@ -8768,9 +8769,12 @@ function createGentleAiExtensionForTesting(
 		return revoked;
 	};
 
+	const reviewSidebar = createReviewSidebarPublisher(pi);
+	pi.on("session_tree", (_event, ctx) => reviewSidebar.reset(ctx));
 	let reminderSessionActive = true;
 	let reminderEpoch = 0;
 	pi.on("session_shutdown", (event, context) => {
+		reviewSidebar.reset();
 		reminderSessionActive = false;
 		reminderEpoch += 1;
 		// Pi tears down this registry on reload as well as session replacement/quit.
@@ -8905,7 +8909,7 @@ function createGentleAiExtensionForTesting(
 		return named.length === 0 ? operation : `${operation} · ${named.join(" · ")}`;
 	};
 
-	pi.registerTool({
+	pi.registerTool(reviewSidebar.tool({
 		name: "gentle_review_capture_group",
 		renderShell: "self",
 		label: "Gentle Review Capture Group",
@@ -8943,9 +8947,9 @@ function createGentleAiExtensionForTesting(
 			);
 			return { content: [{ type: "text", text: JSON.stringify(details) }], details };
 		},
-	});
+	}));
 
-	pi.registerTool({
+	pi.registerTool(reviewSidebar.tool({
 		name: "gentle_review_capture",
 		renderShell: "self",
 		label: "Gentle Review Capture",
@@ -8989,9 +8993,9 @@ function createGentleAiExtensionForTesting(
 				details,
 			};
 		},
-	});
+	}));
 
-	pi.registerTool({
+	pi.registerTool(reviewSidebar.tool({
 		name: "gentle_review",
 		renderShell: "self",
 		label: "Gentle Review Controller",
@@ -9137,9 +9141,10 @@ function createGentleAiExtensionForTesting(
 				details,
 			};
 		},
-	});
+	}));
 
 	pi.on("session_start", async (event, ctx) => {
+		reviewSidebar.reset(ctx);
 		elapsedTiming = new GentleAiElapsedTimingLedger(ctx.sessionManager, pi);
 		reminderSessionActive = true;
 		reminderEpoch += 1;
diff --git a/extensions/gentle-shell.ts b/extensions/gentle-shell.ts
index f6418b2eb..99c694871 100644
--- a/extensions/gentle-shell.ts
+++ b/extensions/gentle-shell.ts
@@ -110,6 +110,7 @@ import { UsageView } from "../lib/shell-usage-view.ts";
 import { sidebarHeader, sidebarPart, sidebarState, VISUAL_SETTINGS_CHANGED } from "../lib/shell-sidebar.ts";
 import { installSidebar, invalidateSidebar, narrowStatusOwner, STATUS_OWNER } from "../lib/shell-sidebar-layout.ts";
 import { SessionChanges, SESSION_CHANGE_EVENT } from "../lib/session-changes.ts";
+import { REVIEW_SIDEBAR_EVENT, isReviewSidebarSnapshot, type ReviewSidebarSnapshot } from "../lib/review-sidebar-state.ts";
 import { installSessionChangeCapture } from "../lib/session-change-capture.ts";
 import { SelectionEngine } from "../lib/selection-engine.ts";
 import { withOverlayRepaint } from "../lib/overlay-repaint.ts";
@@ -1547,6 +1548,22 @@ export default function gentleShell(pi: ExtensionAPI, env: NodeJS.ProcessEnv = p
 	let changes: SessionChanges | undefined;
 	let registry: SessionWorktreeRegistry | undefined;
 	let currentContext: ExtensionContext | undefined;
+	let review: ReviewSidebarSnapshot | undefined;
+	const redrawReview = () => {
+		renderHost?.invalidateSidebar?.();
+		renderHost?.requestRender();
+	};
+	const unsubscribeReview = pi.events.on(REVIEW_SIDEBAR_EVENT, (value) => {
+		const event = value as { sessionId?: unknown; snapshot?: unknown } | undefined;
+		if (!currentContext || event?.sessionId !== currentContext.sessionManager.getSessionId()) return;
+		if (!isReviewSidebarSnapshot(event.snapshot)) return;
+		review = { state: event.snapshot.state, scope: event.snapshot.scope };
+		redrawReview();
+	});
+	pi.on("session_tree", () => {
+		review = undefined;
+		redrawReview();
+	});
 	let shown = "";
 	const applyChanges = (ctx: ExtensionContext, model: ChangesModel) => {
 		const fingerprint = changesFingerprint(model);
@@ -1581,6 +1598,10 @@ export default function gentleShell(pi: ExtensionAPI, env: NodeJS.ProcessEnv = p
 		},
 	});
 	pi.on("session_start", async (_event, ctx) => {
+		if (review) {
+			review = undefined;
+			redrawReview();
+		}
 		stopProfilePoll();
 		registry?.close();
 		currentContext = ctx;
@@ -1614,6 +1635,7 @@ export default function gentleShell(pi: ExtensionAPI, env: NodeJS.ProcessEnv = p
 			const footerModel = (): ShellBarModel => ({
 				...buildShellBarModel(pi, ctx, footerData, { dirty: tracker.model.files.length, usage: usage.get(ctx.model?.provider ?? ""), profile: deps.activeProfile() }),
 				changes: { files: tracker.model.files.length, added: tracker.model.added, deleted: tracker.model.deleted, notice: tracker.model.notice },
+				review,
 			});
 			// At narrow fullscreen widths only one status row paints: a top header
 			// suppresses the bottom bar in the layout, and otherwise the bottom bar
@@ -1684,6 +1706,13 @@ export default function gentleShell(pi: ExtensionAPI, env: NodeJS.ProcessEnv = p
 		applyChanges(ctx, tracker.model);
 	});
 	pi.on("session_shutdown", (_event, ctx) => {
+		if (review) {
+			review = undefined;
+			redrawReview();
+		}
+		// Pi rebuilds the extension runtime after every shutdown (reload, replacement,
+		// fork, quit), so the factory-level subscription never needs to be restored.
+		unsubscribeReview();
 		stopProfilePoll();
 		oddPhaseRegistry.clear(ctx.sessionManager.getSessionId());
 		oddPhaseRegistry.clearRenderRequest(ctx.sessionManager.getSessionId());
diff --git a/tests/gentle-shell.test.ts b/tests/gentle-shell.test.ts
index b71e27150..ebc729fd8 100644
--- a/tests/gentle-shell.test.ts
+++ b/tests/gentle-shell.test.ts
@@ -14,6 +14,10 @@ import { CHANGE_STATUS } from "../lib/shell-changes.ts";
 import { sidebarState, type SidebarRail } from "../lib/shell-sidebar.ts";
 import type { ShellBarTheme } from "../lib/shell-bar.ts";
 import { stripAnsi } from "../lib/terminal-theme.ts";
+import { createGentleAiExtension } from "../extensions/gentle-ai.ts";
+import { decodeReviewStatusV3 } from "../lib/review-integration-v2.ts";
+import { REVIEW_SIDEBAR_EVENT } from "../lib/review-sidebar-state.ts";
+import type { NativeReviewCli } from "../lib/native-review-cli.ts";
 import { resolveVisualSettings, writeVisualSettings } from "../lib/visual-customization-policy.ts";
 import { resolveAnimationPolicy } from "../lib/animation-policy.ts";
 import { resolveVimPolicy, writeVimPolicy } from "../lib/vim-policy.ts";
@@ -285,6 +289,138 @@ test("gentleShell installs the footer on session_start when a UI exists", () =>
 	assert.match(lines[0], /main ⟡ gpt-5\.5 · medium/);
 });
 
+async function reviewSidebarHarness() {
+	const { pi, handlers, tools } = fakePi();
+	gentleShell(pi, { GENTLE_PI_SHELL_CHANGES_WATCH_MS: "off" }, { activeProfile: () => undefined });
+	const { ctx, ui } = fakeContext();
+	ctx.cwd = process.cwd();
+	let sessionId = "shell-session";
+	ctx.sessionManager.getSessionId = () => sessionId;
+	const raw = JSON.parse(readFileSync(new URL("./fixtures/devbinary/status-v5-capture-result-submission.captured.json", import.meta.url), "utf8"));
+	raw.action = "stop";
+	raw.projection.paths = ["src/fresh.ts"];
+	const status = decodeReviewStatusV3(raw);
+	// Each hold() parks the next native status call until the returned release runs.
+	const held: Array<(release: (result: typeof status) => void) => void> = [];
+	const native = { targetStatus: async () => {
+		const park = held.shift();
+		return park ? new Promise<typeof status>((resolve) => park(resolve)) : status;
+	} } as unknown as NativeReviewCli;
+	const hold = () => {
+		let release!: () => void;
+		held.push((resolve) => { release = () => resolve(status); });
+		return () => release();
+	};
+	const published: unknown[] = [];
+	const bus = pi.events;
+	const observedPi = { ...pi, events: {
+		...bus,
+		emit(name: string, value: unknown) {
+			if (name === REVIEW_SIDEBAR_EVENT) published.push(value);
+			bus.emit(name, value);
+		},
+	} } as ExtensionAPI;
+	const producerHooks = new Map<string, Array<(event: unknown, context: ExtensionContext) => unknown>>();
+	createGentleAiExtension({ nativeReviewCli: native, candidateViews: null, processEnv: {} })({
+		...observedPi,
+		on(name: string, handler: (event: unknown, context: ExtensionContext) => unknown) {
+			producerHooks.set(name, [...(producerHooks.get(name) ?? []), handler]);
+		},
+	} as ExtensionAPI);
+	const produce = async (name: string, event: unknown = {}) => {
+		for (const hook of producerHooks.get(name) ?? []) await hook(event, ctx);
+	};
+	await fire(handlers, "session_start", ctx);
+	await produce("session_start");
+	const tui = { terminal: { rows: 40, columns: 160 }, requestRender() {} };
+	const factory = ui.footerFactory as (tui: unknown, theme: ShellBarTheme, footerData: unknown) => { dispose(): void };
+	const component = factory(tui, plainTheme, { getGitBranch: () => "main", getExtensionStatuses: () => new Map(), getAvailableProviderCount: () => 1, onBranchChange: () => () => {} });
+	const rail = sidebarState(tui as unknown as TUI).parts.get("footer") as SidebarRail;
+	return {
+		pi,
+		rail,
+		published,
+		hold,
+		text: () => rail.render(60).join("\n"),
+		sessionId: () => sessionId,
+		run: () => tools.get("gentle_review")!.execute("reset-test", { operation: "status", lineageId: status.authority!.lineageId }, undefined, undefined, ctx),
+		async startSession(next: string) {
+			sessionId = next;
+			await fire(handlers, "session_start", ctx);
+			await produce("session_start");
+		},
+		async navigateTree() {
+			await fire(handlers, "session_tree", ctx);
+			await produce("session_tree");
+		},
+		shutdownShell: () => fire(handlers, "session_shutdown", ctx),
+		async dispose() {
+			await produce("session_shutdown", { reason: "quit" });
+			await fire(handlers, "session_shutdown", ctx);
+			component.dispose();
+		},
+	};
+}
+
+test("review sidebar ignores a stale completion after session_start and accepts the new session", async () => {
+	const harness = await reviewSidebarHarness();
+	try {
+		const release = harness.hold();
+		const pending = harness.run();
+		assert.match(harness.text(), /Checking/);
+		await harness.startSession("next-session");
+		assert.doesNotMatch(harness.text(), /RDD/);
+		const before = harness.published.length;
+		release();
+		await pending;
+		assert.equal(harness.published.length, before, "producer must not publish the old session completion");
+		assert.doesNotMatch(harness.text(), /RDD/, "old completion must not repaint the new session");
+		await harness.run();
+		assert.match(harness.text(), /fresh\.ts/, "a fresh result in the new session is accepted");
+	} finally {
+		await harness.dispose();
+	}
+});
+
+test("review sidebar ignores a stale completion after same-session tree navigation", async () => {
+	const harness = await reviewSidebarHarness();
+	try {
+		await harness.run();
+		assert.match(harness.text(), /fresh\.ts/);
+		const release = harness.hold();
+		const pending = harness.run();
+		assert.match(harness.text(), /Checking/);
+		await harness.navigateTree();
+		assert.doesNotMatch(harness.text(), /RDD/, "tree navigation clears the visible snapshot");
+		const before = harness.published.length;
+		release();
+		await pending;
+		assert.equal(harness.published.length, before, "producer must not publish the old tree completion with the same session ID");
+		assert.doesNotMatch(harness.text(), /RDD/);
+		await harness.run();
+		assert.match(harness.text(), /fresh\.ts/, "a fresh tree-bound result is accepted");
+	} finally {
+		await harness.dispose();
+	}
+});
+
+test("review sidebar rejects foreign-session events and unsubscribes on shutdown", async () => {
+	const harness = await reviewSidebarHarness();
+	try {
+		await harness.run();
+		assert.match(harness.text(), /fresh\.ts/);
+		const previous = harness.rail.digest?.();
+		harness.pi.events.emit(REVIEW_SIDEBAR_EVENT, { sessionId: "foreign", snapshot: { state: "closed", scope: "foreign.ts" } });
+		assert.equal(harness.rail.digest?.(), previous, "foreign events cannot replace the current snapshot");
+		await harness.shutdownShell();
+		assert.doesNotMatch(harness.text(), /RDD/);
+		harness.pi.events.emit(REVIEW_SIDEBAR_EVENT, { sessionId: harness.sessionId(), snapshot: { state: "closed", scope: "late.ts" } });
+		assert.doesNotMatch(harness.text(), /RDD/, "shutdown unsubscribes the consumer");
+	} finally {
+		await harness.dispose();
+	}
+});
+
 test("the fullscreen Status rail carries a live digest so a profile switch refreshes it", async () => {
 	const { pi, handlers } = fakePi();
 	let profile: string | undefined = "team";