diff --git a/app/api/canvas/[id]/detail-archives/route.ts b/app/api/canvas/[id]/detail-archives/route.ts
index 559f099bf..3ca2ae14f 100644
--- a/app/api/canvas/[id]/detail-archives/route.ts
+++ b/app/api/canvas/[id]/detail-archives/route.ts
@@ -30,6 +30,13 @@ type DetailArchiveSlot = {
   contentType?: string;
 } | null;
 
+type DetailArchiveSurfaceReview = {
+  screenIndex?: number;
+  action?: string;
+  passed?: boolean;
+  issues?: string[];
+} | null;
+
 type DetailGenerationMode = "classic" | "agent_layout";
 
 function sanitizeGenerationMode(value: unknown): DetailGenerationMode {
@@ -75,6 +82,25 @@ function sanitizeSlots(input: unknown): DetailArchiveSlot[] {
   });
 }
 
+function sanitizeUiSurfaceSnapshot(input: unknown) {
+  if (!input || typeof input !== "object" || Array.isArray(input)) return null;
+  return input as Record<string, unknown>;
+}
+
+function sanitizeUiSurfaceLatestReview(input: unknown): DetailArchiveSurfaceReview {
+  if (!input || typeof input !== "object" || Array.isArray(input)) return null;
+  const raw = input as Record<string, unknown>;
+  const issues = Array.isArray(raw.issues)
+    ? raw.issues.map((item) => String(item || "").trim()).filter(Boolean).slice(0, 10)
+    : [];
+  return {
+    screenIndex: Number.isFinite(Number(raw.screenIndex)) ? Math.max(0, Number(raw.screenIndex)) : undefined,
+    action: String(raw.action || "").trim() || undefined,
+    passed: typeof raw.passed === "boolean" ? raw.passed : undefined,
+    issues,
+  };
+}
+
 async function ensureProjectOwnership(projectId: string, userId: string) {
   const [project] = await db
     .select({ id: canvasProject.id })
@@ -146,6 +172,8 @@ export async function POST(
 
     const brief = sanitizeBrief(archiveRaw.brief);
     const slots = sanitizeSlots(archiveRaw.slots);
+    const uiSurfaceSnapshot = sanitizeUiSurfaceSnapshot(archiveRaw.uiSurfaceSnapshot);
+    const uiSurfaceLatestReview = sanitizeUiSurfaceLatestReview(archiveRaw.uiSurfaceLatestReview);
 
     const [saved] = await db
       .insert(canvasDetailArchive)
@@ -160,6 +188,8 @@ export async function POST(
         summary: summary || null,
         imageCount: Number.isFinite(imageCount) ? Math.max(0, Math.round(imageCount)) : null,
         coverUrl: coverUrl || null,
+        uiSurfaceSnapshot,
+        uiSurfaceLatestReview,
       })
       .returning();
 
@@ -201,6 +231,8 @@ export async function PATCH(
     const generationMode = sanitizeGenerationMode(archiveRaw.generationMode);
     const brief = sanitizeBrief(archiveRaw.brief);
     const slots = sanitizeSlots(archiveRaw.slots);
+    const uiSurfaceSnapshot = sanitizeUiSurfaceSnapshot(archiveRaw.uiSurfaceSnapshot);
+    const uiSurfaceLatestReview = sanitizeUiSurfaceLatestReview(archiveRaw.uiSurfaceLatestReview);
 
     const [updated] = await db
       .update(canvasDetailArchive)
@@ -213,6 +245,8 @@ export async function PATCH(
         summary: summary || null,
         imageCount: Number.isFinite(imageCount) ? Math.max(0, Math.round(imageCount)) : null,
         coverUrl: coverUrl || null,
+        uiSurfaceSnapshot,
+        uiSurfaceLatestReview,
         updatedAt: new Date(),
       })
       .where(
diff --git a/app/api/canvas/detail-plan/route.ts b/app/api/canvas/detail-plan/route.ts
index f5ca5bad4..2916d64ba 100644
--- a/app/api/canvas/detail-plan/route.ts
+++ b/app/api/canvas/detail-plan/route.ts
@@ -16,7 +16,9 @@ import {
   buildDetailUiProtocol,
   type DetailUiProtocol,
 } from "@/lib/detail-ui-protocol";
+import { buildDetailUiSurfaceSnapshot } from "@/lib/detail-ui-surface-adapter";
 import { validateDetailUiProtocol } from "@/lib/detail-ui-validator";
+import type { UiSurfaceSnapshot } from "@/lib/ui-surface-protocol";
 
 export const runtime = "nodejs";
 export const maxDuration = 180;
@@ -236,6 +238,7 @@ type DetailPlanResponse = {
   };
   screens: DetailPlanScreen[];
   uiProtocol?: DetailUiProtocol;
+  uiSurface?: UiSurfaceSnapshot;
   model?: {
     id: string;
     displayName: string;
@@ -1237,6 +1240,27 @@ function buildFallbackPlan(params: {
     },
     screens,
     uiProtocol,
+    uiSurface:
+      params.generationMode === "agent_layout"
+        ? buildDetailUiSurfaceSnapshot({
+            generationMode: params.generationMode,
+            screenSize: {
+              width: 790,
+              height: 1300,
+            },
+            summary:
+              language === "en"
+                ? `Generated ${count} storyboard frames with fixed size 790x1300.`
+                : `已生成 ${count} 段详情分镜，固定尺寸 790x1300。`,
+            globalStyle,
+            screens,
+            uiProtocol,
+            uiValidation: {
+              passed: uiValidation.passed,
+              issues: uiValidation.issues.map((item) => item.message),
+            },
+          })
+        : undefined,
   };
 }
 
@@ -2160,6 +2184,24 @@ export async function POST(request: Request) {
       },
       screens,
       uiProtocol,
+      uiSurface:
+        generationMode === "agent_layout"
+          ? buildDetailUiSurfaceSnapshot({
+              generationMode,
+              screenSize: {
+                width: 790,
+                height: 1300,
+              },
+              summary,
+              globalStyle,
+              screens,
+              uiProtocol,
+              uiValidation: {
+                passed: uiValidation.passed,
+                issues: uiValidation.issues.map((item) => item.message),
+              },
+            })
+          : undefined,
       model: {
         id: plannerConfig.model.id,
         displayName: plannerConfig.model.displayName,
diff --git a/app/api/canvas/detail-review/route.ts b/app/api/canvas/detail-review/route.ts
index e8f8c6c42..17dc5b3b1 100644
--- a/app/api/canvas/detail-review/route.ts
+++ b/app/api/canvas/detail-review/route.ts
@@ -17,7 +17,9 @@ import {
   type DetailGenerationMode,
   type DetailUiScreenReviewPatch,
 } from "@/lib/detail-ui-protocol";
+import { buildDetailUiSurfacePatchFromReview } from "@/lib/detail-ui-surface-adapter";
 import { validateDetailUiProtocol } from "@/lib/detail-ui-validator";
+import type { UiSurfacePatch } from "@/lib/ui-surface-protocol";
 
 export const runtime = "nodejs";
 export const maxDuration = 180;
@@ -25,6 +27,7 @@ export const maxDuration = 180;
 type DetailReviewRequest = {
   outputLanguage?: string;
   generationMode?: string;
+  surfaceId?: string;
   imageUrl?: string;
   referenceImages?: string[];
   screen?: {
@@ -249,6 +252,7 @@ export async function POST(request: Request) {
           layoutFixes: [],
           revisedPrompt: fallbackPrompt,
           uiPatch: undefined,
+          uiSurfacePatch: undefined,
           model: null,
         },
       });
@@ -272,6 +276,7 @@ export async function POST(request: Request) {
           layoutFixes: [],
           revisedPrompt: fallbackPrompt,
           uiPatch: undefined,
+          uiSurfacePatch: undefined,
           model: null,
         },
       });
@@ -373,6 +378,7 @@ export async function POST(request: Request) {
             layoutFixes: [],
             revisedPrompt: fallbackPrompt,
             uiPatch: undefined,
+            uiSurfacePatch: undefined,
             model: {
               id: reviewerConfig.model.id,
               displayName: reviewerConfig.model.displayName,
@@ -482,6 +488,35 @@ export async function POST(request: Request) {
             (uiPatch.notes.length > 0 || !uiValidation.passed)
           ? "protocol_patch"
           : "regenerate_image";
+    const uiSurfacePatch: UiSurfacePatch | null =
+      generationMode === "agent_layout" &&
+      reviewAction === "protocol_patch" &&
+      uiPatch &&
+      body.surfaceId
+        ? buildDetailUiSurfacePatchFromReview({
+            surfaceId: body.surfaceId,
+            screenIndex: Number(body.screen?.index || 1),
+            screen: {
+              index: Number(body.screen?.index || 1),
+              title: String(body.screen?.title || "").trim(),
+              subtitle: String(body.screen?.subtitle || "").trim(),
+              copy: String(body.screen?.copy || "").trim(),
+              screenType:
+                body.screen?.screenType === "A" ||
+                body.screen?.screenType === "B" ||
+                body.screen?.screenType === "C"
+                  ? body.screen.screenType
+                  : undefined,
+              objective: undefined,
+              layoutNote: String(body.screen?.layoutNote || "").trim(),
+            },
+            uiPatch,
+            uiValidation: {
+              passed: uiValidation.passed,
+              issues: uiValidation.issues.map((item) => item.message),
+            },
+          })
+        : null;
 
     return NextResponse.json({
       success: true,
@@ -495,6 +530,7 @@ export async function POST(request: Request) {
         layoutFixes: [...layoutFixes, ...typographyFixes, ...conversionFixes].slice(0, 10),
         revisedPrompt,
         uiPatch,
+        uiSurfacePatch: uiSurfacePatch || undefined,
         uiValidation: {
           passed: uiValidation.passed,
           issues: uiValidation.issues.map((item) => item.message),
diff --git a/components/canvas/CanvasChatPanel.tsx b/components/canvas/CanvasChatPanel.tsx
index 147d0458f..9f21fd8a8 100644
--- a/components/canvas/CanvasChatPanel.tsx
+++ b/components/canvas/CanvasChatPanel.tsx
@@ -8,10 +8,16 @@ import { createPortal } from "react-dom";
 import type { DetailUiProtocol } from "@/lib/detail-ui-protocol";
 import type { DetailUiScreenReviewPatch } from "@/lib/detail-ui-protocol";
 import {
-  buildDetailTextLayerNodesFromProtocol,
+  buildDetailTextLayerNodes,
   buildDetailTextLayerNodesFromReviewPatch,
-  buildLegacyDetailTextLayerNodes,
+  buildDetailTextLayerNodesFromSurfaceScreen,
+  collectManagedDetailTextLayerNodeIds,
 } from "@/lib/detail-ui-renderer";
+import {
+  applyUiSurfacePatch,
+  type UiSurfacePatch,
+  type UiSurfaceSnapshot,
+} from "@/lib/ui-surface-protocol";
 import useSWR, { useSWRConfig } from "swr";
 import { Send, Loader2, ImagePlus, Paperclip, X, Plus, History, LayoutGrid, ArrowRightToLine, RefreshCw, Globe, Box, ArrowUp, Video, Sparkles, Check, ChevronDown, ChevronUp, AlertCircle, CheckCircle2, Brain, ThumbsUp, ThumbsDown, Eye, Trash2, Download, MessageCircle } from "lucide-react";
 import { Button } from "@/components/ui/button";
@@ -76,6 +82,8 @@ import { ImageParamsBar, type ImageGenerationParams } from "@/components/image-p
 import { VideoParamsBar, type VideoGenerationParams } from "@/components/video-params-bar";
 import { ImageGenerationLoading } from "@/components/image-generation-loading";
 import type { VideoToolCapabilityContract } from "@/types/video-tool-capability";
+import { DetailUiValidationPanel } from "@/components/canvas/DetailUiValidationPanel";
+import { DetailSurfaceInspectorPanel } from "@/components/canvas/DetailSurfaceInspectorPanel";
 
 // 标签悬停预览信息
 interface TagPreviewInfo {
@@ -1177,6 +1185,13 @@ type DetailArchive = {
   summary?: string;
   imageCount?: number;
   coverUrl?: string;
+  uiSurfaceSnapshot?: UiSurfaceSnapshot | null;
+  uiSurfaceLatestReview?: {
+    screenIndex?: number;
+    action?: "pass" | "protocol_patch" | "regenerate_image";
+    passed?: boolean;
+    issues?: string[];
+  } | null;
 };
 
 type DetailPlanResponse = {
@@ -1231,6 +1246,10 @@ type DetailPlanResponse = {
     passed?: boolean;
     issues?: string[];
   };
+  uiValidation?: {
+    passed?: boolean;
+    issues?: string[];
+  };
   preflight?: {
     passed?: boolean;
     designDirectorScore?: number;
@@ -1244,6 +1263,7 @@ type DetailPlanResponse = {
     providerType: string;
   };
   uiProtocol?: DetailUiProtocol;
+  uiSurface?: UiSurfaceSnapshot;
 };
 type DetailPlanScreenSpec = NonNullable<DetailPlanResponse["screens"]>[number];
 
@@ -1370,6 +1390,11 @@ type DetailScreenReviewResult = {
   layoutFixes?: string[];
   revisedPrompt?: string;
   uiPatch?: DetailUiScreenReviewPatch;
+  uiSurfacePatch?: UiSurfacePatch;
+  uiValidation?: {
+    passed?: boolean;
+    issues?: string[];
+  };
   model?: {
     id?: string;
     displayName?: string;
@@ -1377,6 +1402,18 @@ type DetailScreenReviewResult = {
   } | null;
 };
 
+type DetailUiValidationSnapshot = {
+  passed?: boolean;
+  issues?: string[];
+};
+
+type DetailUiReviewSnapshot = {
+  screenIndex: number;
+  action?: "pass" | "protocol_patch" | "regenerate_image";
+  passed?: boolean;
+  issues?: string[];
+};
+
 function normalizeDetailGenerationMode(value: unknown): DetailGenerationMode {
   return value === "agent_layout" ? "agent_layout" : "classic";
 }
@@ -1549,6 +1586,10 @@ function buildDetailResultMarkdown(params: {
     passed?: boolean;
     issues?: string[];
   };
+  uiValidation?: {
+    passed?: boolean;
+    issues?: string[];
+  };
   globalStyle?: {
     designLanguage?: string;
     typography?: {
@@ -1610,6 +1651,14 @@ function buildDetailResultMarkdown(params: {
       params.qualityChecks.issues.forEach((issue) => lines.push(`- ${issue}`));
     }
   }
+  if (params.uiValidation) {
+    if (params.uiValidation.passed) {
+      lines.push("协议排版校验：通过");
+    } else if (params.uiValidation.issues?.length) {
+      lines.push("协议排版校验：存在待优化项");
+      params.uiValidation.issues.slice(0, 3).forEach((issue) => lines.push(`- ${issue}`));
+    }
+  }
   lines.push(`共生成 ${params.images.length} 张详情图。`);
   if (params.globalStyle) {
     const typography = params.globalStyle.typography;
@@ -1746,6 +1795,16 @@ export function CanvasChatPanel({
     current: 0,
     total: 0,
   });
+  const [detailUiValidation, setDetailUiValidation] = useState<{
+    plan: DetailUiValidationSnapshot | null;
+    latestScreen: DetailUiReviewSnapshot | null;
+  }>({
+    plan: null,
+    latestScreen: null,
+  });
+  const [detailSurfaceSnapshot, setDetailSurfaceSnapshot] = useState<UiSurfaceSnapshot | null>(
+    null,
+  );
   const [detailSlots, setDetailSlots] = useState<Array<PickedObjectAttachment | null>>(
     () => DETAIL_SLOT_CONFIGS.map(() => null)
   );
@@ -3796,6 +3855,36 @@ export function CanvasChatPanel({
             summary: item.summary ? String(item.summary) : undefined,
             imageCount: Number(item.imageCount || 0) || undefined,
             coverUrl: item.coverUrl ? String(item.coverUrl) : undefined,
+            uiSurfaceSnapshot:
+              item.uiSurfaceSnapshot &&
+              typeof item.uiSurfaceSnapshot === "object" &&
+              !Array.isArray(item.uiSurfaceSnapshot)
+                ? (item.uiSurfaceSnapshot as UiSurfaceSnapshot)
+                : null,
+            uiSurfaceLatestReview:
+              item.uiSurfaceLatestReview &&
+              typeof item.uiSurfaceLatestReview === "object" &&
+              !Array.isArray(item.uiSurfaceLatestReview)
+                ? {
+                    screenIndex: Number((item.uiSurfaceLatestReview as any).screenIndex || 0) || undefined,
+                    action:
+                      (item.uiSurfaceLatestReview as any).action === "protocol_patch" ||
+                      (item.uiSurfaceLatestReview as any).action === "regenerate_image" ||
+                      (item.uiSurfaceLatestReview as any).action === "pass"
+                        ? (item.uiSurfaceLatestReview as any).action
+                        : undefined,
+                    passed:
+                      typeof (item.uiSurfaceLatestReview as any).passed === "boolean"
+                        ? (item.uiSurfaceLatestReview as any).passed
+                        : undefined,
+                    issues: Array.isArray((item.uiSurfaceLatestReview as any).issues)
+                      ? (item.uiSurfaceLatestReview as any).issues
+                          .map((issue: unknown) => String(issue || "").trim())
+                          .filter(Boolean)
+                          .slice(0, 10)
+                      : [],
+                  }
+                : null,
           }))
           .sort(
             (a, b) =>
@@ -5575,6 +5664,8 @@ export function CanvasChatPanel({
       generationMode: DetailGenerationMode;
       brief: DetailBriefForm;
       slots: Array<PickedObjectAttachment | null>;
+      uiSurfaceSnapshot?: UiSurfaceSnapshot | null;
+      uiSurfaceLatestReview?: DetailArchive["uiSurfaceLatestReview"];
     }): Promise<DetailArchive | null> => {
       const archiveId = generateUUID();
       const promptText = params.prompt.replace(/\s+/g, " ").trim();
@@ -5611,6 +5702,8 @@ export function CanvasChatPanel({
         summary: params.summary,
         imageCount: params.imageCount,
         coverUrl: params.coverUrl,
+        uiSurfaceSnapshot: params.uiSurfaceSnapshot || null,
+        uiSurfaceLatestReview: params.uiSurfaceLatestReview || null,
       };
 
       setDetailArchives((prev) => [archive, ...prev].slice(0, 30));
@@ -5631,6 +5724,24 @@ export function CanvasChatPanel({
     setIsDetailGenerationMode(true);
     setDetailGenerationMode(normalizeDetailGenerationMode(archive.generationMode));
     setDetailBrief({ ...archive.brief });
+    setDetailSurfaceSnapshot(archive.uiSurfaceSnapshot || null);
+    setDetailUiValidation({
+      plan: archive.uiSurfaceSnapshot?.validation
+        ? {
+            passed: archive.uiSurfaceSnapshot.validation.passed,
+            issues: archive.uiSurfaceSnapshot.validation.issues || [],
+          }
+        : null,
+      latestScreen:
+        archive.uiSurfaceLatestReview?.screenIndex
+          ? {
+              screenIndex: archive.uiSurfaceLatestReview.screenIndex,
+              action: archive.uiSurfaceLatestReview.action,
+              passed: archive.uiSurfaceLatestReview.passed,
+              issues: archive.uiSurfaceLatestReview.issues || [],
+            }
+          : null,
+    });
     setDetailSlots(
       DETAIL_SLOT_CONFIGS.map((_, index) => {
         const slot = archive.slots[index];
@@ -5805,6 +5916,8 @@ export function CanvasChatPanel({
     let completedDetailImageCount = 0;
     const generatedImages: Array<{ originalUrl: string; thumbnailUrl: string }> = [];
     let detailPlaceholderNodeIds: string[] = [];
+    let currentDetailSurfaceSnapshot: UiSurfaceSnapshot | null = null;
+    let latestSurfaceReviewState: DetailArchive["uiSurfaceLatestReview"] = null;
     const detailPlaceholderSpacing = 24;
     const detailPlaceholderItemWidth = DETAIL_TARGET_WIDTH;
     const detailPlaceholderItemHeight = DETAIL_TARGET_HEIGHT;
@@ -5905,6 +6018,11 @@ export function CanvasChatPanel({
 
     setIsDetailWorkbenchCollapsed(true);
     setIsDetailGenerating(true);
+    setDetailUiValidation({
+      plan: null,
+      latestScreen: null,
+    });
+    setDetailSurfaceSnapshot(null);
     setDetailProgress({
       status: "running",
       stage: "Agent 正在解析需求并规划详情结构...",
@@ -5921,6 +6039,8 @@ export function CanvasChatPanel({
         generationMode: archiveSnapshot.generationMode,
         brief: archiveSnapshot.brief,
         slots: archiveSnapshot.slots,
+        uiSurfaceSnapshot: null,
+        uiSurfaceLatestReview: null,
       });
 
       const detailReferenceAttachments = DETAIL_SLOT_CONFIGS.map((config, index) => {
@@ -5993,6 +6113,10 @@ export function CanvasChatPanel({
       const activeDetailGenerationMode = normalizeDetailGenerationMode(
         planData.generationMode || detailGenerationMode
       );
+      currentDetailSurfaceSnapshot = planData.uiSurface || null;
+      if (activeDetailGenerationMode !== detailGenerationMode) {
+        setDetailGenerationMode(activeDetailGenerationMode);
+      }
       const perScreenSteps = activeDetailGenerationMode === "agent_layout" ? 1 : 2;
       const prompts = Array.isArray(planData.prompts)
         ? planData.prompts.map((item) => String(item || "").trim()).filter(Boolean)
@@ -6014,14 +6138,40 @@ export function CanvasChatPanel({
       const preflightIssues = Array.isArray(planData.preflight?.issues)
         ? planData.preflight?.issues.filter(Boolean)
         : [];
+      const planUiIssues = Array.isArray(planData.uiValidation?.issues)
+        ? planData.uiValidation.issues.filter(Boolean)
+        : [];
       const preflightDesignScore = Number(planData.preflight?.designDirectorScore || 0);
       const preflightMarketingScore = Number(planData.preflight?.marketingDirectorScore || 0);
       const preflightPassed = planData.preflight?.passed !== false;
+      setDetailUiValidation({
+        plan: {
+          passed: planData.uiValidation?.passed !== false,
+          issues: planUiIssues,
+        },
+        latestScreen: null,
+      });
+      setDetailSurfaceSnapshot(planData.uiSurface || null);
+      if (workingArchive?.id && planData.uiSurface) {
+        const plannedArchive: DetailArchive = {
+          ...workingArchive,
+          uiSurfaceSnapshot: planData.uiSurface,
+          uiSurfaceLatestReview: null,
+        };
+        workingArchive = plannedArchive;
+        updateLocalDetailArchive(plannedArchive.id, {
+          uiSurfaceSnapshot: plannedArchive.uiSurfaceSnapshot,
+          uiSurfaceLatestReview: plannedArchive.uiSurfaceLatestReview,
+        });
+        await patchDetailArchiveInDatabase(plannedArchive.id, plannedArchive);
+      }
       setDetailProgress({
         status: "running",
         stage:
           planData.qualityChecks?.passed === false
             ? `分镜预审未通过：${qualityIssues[0] || "已自动切换为稳定方案"}`
+            : planData.uiValidation?.passed === false
+              ? `协议排版校验提示：${planUiIssues[0] || "已记录待优化项，继续逐屏执行"}`
             : preflightPassed
               ? `双总监预审通过（设计${preflightDesignScore || "--"} / 营销${preflightMarketingScore || "--"}），开始逐屏生成`
               : `双总监预审提示：${preflightIssues[0] || "已自动重写分镜后放行"}`,
@@ -6073,14 +6223,12 @@ export function CanvasChatPanel({
         drafts: Array<Omit<CanvasNode, "id" | "createdAt" | "updatedAt">>;
       }) => {
         const storeState = useCanvasStore.getState();
-        const childTextNodes = storeState.nodes.filter(
-          (node) =>
-            node.parentId === params.nodeId &&
-            node.type === "text" &&
-            Boolean((node.data as any)?.metadata?.detailUiBlockId),
+        const childTextNodeIds = collectManagedDetailTextLayerNodeIds(
+          storeState.nodes,
+          params.nodeId,
         );
 
-        childTextNodes.forEach((node) => deleteNode(node.id));
+        childTextNodeIds.forEach((nodeId) => deleteNode(nodeId));
         params.drafts.forEach((draft) => addNode(draft));
       };
       const createAgentLayoutTextLayers = (params: {
@@ -6088,6 +6236,7 @@ export function CanvasChatPanel({
         screenIndex: number;
         screen?: DetailPlanScreenSpec;
         screenProtocol?: DetailUiProtocol["screens"][number];
+        surfaceSnapshot?: UiSurfaceSnapshot | null;
       }) => {
         if (!isAgentLayoutMode) return;
         const storeState = useCanvasStore.getState();
@@ -6097,10 +6246,20 @@ export function CanvasChatPanel({
         const y = Number(imageNode.position?.y || 0);
         const width = Number(imageNode.size?.width || DETAIL_TARGET_WIDTH);
         const height = Number(imageNode.size?.height || DETAIL_TARGET_HEIGHT);
-        const screen = params.screen;
         const drafts =
-          params.screenProtocol
-            ? buildDetailTextLayerNodesFromProtocol({
+          params.surfaceSnapshot
+            ? buildDetailTextLayerNodesFromSurfaceScreen({
+                parentNodeId: params.nodeId,
+                parentPosition: { x, y },
+                parentSize: { width, height },
+                surface: params.surfaceSnapshot,
+                screenIndex: params.screenIndex + 1,
+              })
+            : [];
+        const finalDrafts =
+          drafts.length > 0
+            ? drafts
+            : buildDetailTextLayerNodes({
                 parentNodeId: params.nodeId,
                 parentPosition: { x, y },
                 parentSize: { width, height },
@@ -6108,27 +6267,22 @@ export function CanvasChatPanel({
                   width: DETAIL_TARGET_WIDTH,
                   height: DETAIL_TARGET_HEIGHT,
                 },
-                screenProtocol: params.screenProtocol,
-              })
-            : buildLegacyDetailTextLayerNodes({
-                parentNodeId: params.nodeId,
-                parentPosition: { x, y },
-                parentWidth: width,
                 screenIndex: params.screenIndex,
-                title: screen?.title,
-                subtitle: screen?.subtitle,
-                body: screen?.copy,
-                titleFontSize,
-                titleFontWeight,
-                subtitleFontSize,
-                subtitleFontWeight,
-                bodyFontSize,
-                bodyFontWeight,
+                screen: params.screen,
+                screenProtocol: params.screenProtocol,
+                typography: {
+                  titleFontSize,
+                  titleFontWeight,
+                  subtitleFontSize,
+                  subtitleFontWeight,
+                  bodyFontSize,
+                  bodyFontWeight,
+                },
               });
 
         replaceDetailTextLayers({
           nodeId: params.nodeId,
-          drafts,
+          drafts: finalDrafts,
         });
       };
       for (let index = 0; index < prompts.length; index += 1) {
@@ -6345,6 +6499,7 @@ export function CanvasChatPanel({
             body: JSON.stringify({
               outputLanguage,
               generationMode: activeDetailGenerationMode,
+              surfaceId: currentDetailSurfaceSnapshot?.surfaceId,
               imageUrl: firstPassImage.originalUrl || firstPassImage.thumbnailUrl,
               referenceImages: generationReferenceImagesBase.slice(0, 6),
               brief,
@@ -6368,6 +6523,48 @@ export function CanvasChatPanel({
           console.error("[CanvasChat] Detail screen review failed:", reviewError);
         }
 
+        if (screenReviewResult) {
+          const latestScreenIssues = Array.isArray(screenReviewResult.uiValidation?.issues)
+            ? screenReviewResult.uiValidation.issues.filter(Boolean)
+            : Array.isArray(screenReviewResult.issues)
+              ? screenReviewResult.issues.filter(Boolean)
+              : [];
+          latestSurfaceReviewState = {
+            screenIndex: index + 1,
+            action: screenReviewResult?.reviewAction,
+            passed:
+              typeof screenReviewResult.uiValidation?.passed === "boolean"
+                ? screenReviewResult.uiValidation.passed
+                : screenReviewResult.pass,
+            issues: latestScreenIssues,
+          };
+          if (screenReviewResult.uiSurfacePatch) {
+            currentDetailSurfaceSnapshot = applyUiSurfacePatch(
+              currentDetailSurfaceSnapshot,
+              screenReviewResult.uiSurfacePatch,
+            );
+            setDetailSurfaceSnapshot(currentDetailSurfaceSnapshot);
+          }
+          const nextLatestSurfaceReview = latestSurfaceReviewState || {
+            screenIndex: index + 1,
+            action: screenReviewResult?.reviewAction,
+            passed:
+              typeof screenReviewResult.uiValidation?.passed === "boolean"
+                ? screenReviewResult.uiValidation.passed
+                : screenReviewResult.pass,
+            issues: latestScreenIssues,
+          };
+          setDetailUiValidation((prev) => ({
+            ...prev,
+            latestScreen: {
+              screenIndex: nextLatestSurfaceReview.screenIndex || index + 1,
+              action: nextLatestSurfaceReview.action,
+              passed: nextLatestSurfaceReview.passed,
+              issues: nextLatestSurfaceReview.issues || [],
+            },
+          }));
+        }
+
         const shouldApplyProtocolPatch = Boolean(
           screenReviewResult?.uiPatch &&
             screenReviewResult?.reviewAction === "protocol_patch",
@@ -6406,27 +6603,37 @@ export function CanvasChatPanel({
             ? useCanvasStore.getState().getNode(targetNodeId)
             : null;
           if (currentNode && targetNodeId) {
-            const replacementDrafts = buildDetailTextLayerNodesFromReviewPatch({
-              parentNodeId: targetNodeId,
-              parentPosition: {
-                x: Number(currentNode.position?.x || 0),
-                y: Number(currentNode.position?.y || 0),
-              },
-              parentSize: {
-                width: Number(currentNode.size?.width || DETAIL_TARGET_WIDTH),
-                height: Number(currentNode.size?.height || DETAIL_TARGET_HEIGHT),
-              },
-              screenSize: planData.uiProtocol?.screenSize || {
-                width: DETAIL_TARGET_WIDTH,
-                height: DETAIL_TARGET_HEIGHT,
-              },
-              uiPatch: screenReviewResult?.uiPatch,
-            });
-            if (replacementDrafts.length > 0) {
-              replaceDetailTextLayers({
+            if (currentDetailSurfaceSnapshot) {
+              createAgentLayoutTextLayers({
                 nodeId: targetNodeId,
-                drafts: replacementDrafts,
+                screenIndex: index,
+                screen,
+                screenProtocol: planData.uiProtocol?.screens?.[index],
+                surfaceSnapshot: currentDetailSurfaceSnapshot,
               });
+            } else {
+              const replacementDrafts = buildDetailTextLayerNodesFromReviewPatch({
+                parentNodeId: targetNodeId,
+                parentPosition: {
+                  x: Number(currentNode.position?.x || 0),
+                  y: Number(currentNode.position?.y || 0),
+                },
+                parentSize: {
+                  width: Number(currentNode.size?.width || DETAIL_TARGET_WIDTH),
+                  height: Number(currentNode.size?.height || DETAIL_TARGET_HEIGHT),
+                },
+                screenSize: planData.uiProtocol?.screenSize || {
+                  width: DETAIL_TARGET_WIDTH,
+                  height: DETAIL_TARGET_HEIGHT,
+                },
+                uiPatch: screenReviewResult?.uiPatch,
+              });
+              if (replacementDrafts.length > 0) {
+                replaceDetailTextLayers({
+                  nodeId: targetNodeId,
+                  drafts: replacementDrafts,
+                });
+              }
             }
           }
         } else if (shouldRegenerate) {
@@ -6488,12 +6695,16 @@ export function CanvasChatPanel({
             summary: progressSummary,
             imageCount: completedDetailImageCount,
             coverUrl: progressCoverUrl,
+            uiSurfaceSnapshot: currentDetailSurfaceSnapshot,
+            uiSurfaceLatestReview: latestSurfaceReviewState,
           };
           workingArchive = nextArchive;
           updateLocalDetailArchive(nextArchive.id, {
             summary: progressSummary,
             imageCount: completedDetailImageCount,
             coverUrl: progressCoverUrl,
+            uiSurfaceSnapshot: currentDetailSurfaceSnapshot,
+            uiSurfaceLatestReview: latestSurfaceReviewState,
           });
           await patchDetailArchiveInDatabase(nextArchive.id, nextArchive);
         }
@@ -6536,6 +6747,8 @@ export function CanvasChatPanel({
                 detailGlobalStyle: planData.globalStyle || null,
                 detailGenerationMode: activeDetailGenerationMode,
                 detailScreenReview: screenReviewResult || null,
+                detailUiSurfaceId: currentDetailSurfaceSnapshot?.surfaceId || null,
+                detailUiSurfaceType: currentDetailSurfaceSnapshot?.surfaceType || null,
                 detailGeneratingPlaceholder: false,
                 detailProgressLabel: `该屏完成 ${index + 1}/${prompts.length}`,
               },
@@ -6546,6 +6759,7 @@ export function CanvasChatPanel({
             screenIndex: index,
             screen,
             screenProtocol: planData.uiProtocol?.screens?.[index],
+            surfaceSnapshot: currentDetailSurfaceSnapshot,
           });
         }
       }
@@ -6678,6 +6892,7 @@ export function CanvasChatPanel({
         prompts,
         skillFlow: planData.skillFlow,
         qualityChecks: planData.qualityChecks,
+        uiValidation: planData.uiValidation,
         globalStyle: planData.globalStyle,
         screens: screenSpecs,
         reviewGroups,
@@ -6717,12 +6932,16 @@ export function CanvasChatPanel({
           summary: finalSummary,
           imageCount: generatedImages.length,
           coverUrl: generatedImages[0]?.thumbnailUrl || generatedImages[0]?.originalUrl,
+          uiSurfaceSnapshot: currentDetailSurfaceSnapshot,
+          uiSurfaceLatestReview: latestSurfaceReviewState,
         };
         workingArchive = finalArchive;
         updateLocalDetailArchive(finalArchive.id, {
           summary: finalArchive.summary,
           imageCount: finalArchive.imageCount,
           coverUrl: finalArchive.coverUrl,
+          uiSurfaceSnapshot: finalArchive.uiSurfaceSnapshot,
+          uiSurfaceLatestReview: finalArchive.uiSurfaceLatestReview,
         });
         await patchDetailArchiveInDatabase(finalArchive.id, finalArchive);
       } else {
@@ -6734,6 +6953,8 @@ export function CanvasChatPanel({
           generationMode: archiveSnapshot.generationMode,
           brief: archiveSnapshot.brief,
           slots: archiveSnapshot.slots,
+          uiSurfaceSnapshot: currentDetailSurfaceSnapshot,
+          uiSurfaceLatestReview: latestSurfaceReviewState,
         });
       }
 
@@ -6777,11 +6998,15 @@ export function CanvasChatPanel({
           summary: failedSummary,
           imageCount: completedDetailImageCount,
           coverUrl: generatedImages[0]?.thumbnailUrl || generatedImages[0]?.originalUrl,
+          uiSurfaceSnapshot: currentDetailSurfaceSnapshot,
+          uiSurfaceLatestReview: latestSurfaceReviewState,
         };
         updateLocalDetailArchive(failedArchive.id, {
           summary: failedSummary,
           imageCount: completedDetailImageCount,
           coverUrl: failedArchive.coverUrl,
+          uiSurfaceSnapshot: failedArchive.uiSurfaceSnapshot,
+          uiSurfaceLatestReview: failedArchive.uiSurfaceLatestReview,
         });
         void patchDetailArchiveInDatabase(failedArchive.id, failedArchive);
       }
@@ -9073,6 +9298,18 @@ export function CanvasChatPanel({
                 )}
               </div>
 
+              <DetailUiValidationPanel
+                generationMode={detailGenerationMode}
+                planValidation={detailUiValidation.plan}
+                latestScreenValidation={detailUiValidation.latestScreen}
+                surfaceId={detailSurfaceSnapshot?.surfaceId}
+              />
+
+              <DetailSurfaceInspectorPanel
+                surface={detailSurfaceSnapshot}
+                latestScreenValidation={detailUiValidation.latestScreen}
+              />
+
               <div className="mt-3 rounded-xl border border-border/50 bg-zinc-50/40 p-3 dark:bg-zinc-900/40">
                 <div className="mb-2 flex items-center justify-between">
                   <p className="text-[11px] font-medium text-foreground">生成路线</p>
diff --git a/components/canvas/DetailSurfaceInspectorPanel.tsx b/components/canvas/DetailSurfaceInspectorPanel.tsx
new file mode 100644
index 000000000..f37b221b9
--- /dev/null
+++ b/components/canvas/DetailSurfaceInspectorPanel.tsx
@@ -0,0 +1,172 @@
+"use client";
+
+import { Blocks, CheckCircle2, LayoutTemplate, Layers3 } from "lucide-react";
+import {
+  countUiSurfaceComponents,
+  getUiSurfaceChildren,
+  getUiSurfaceScreenComponents,
+  resolveUiSurfaceTextBinding,
+  type UiSurfaceSnapshot,
+} from "@/lib/ui-surface-protocol";
+import { cn } from "@/lib/utils";
+
+type DetailSurfaceInspectorReviewState = {
+  screenIndex: number;
+  action?: "pass" | "protocol_patch" | "regenerate_image";
+  passed?: boolean;
+};
+
+function getActionLabel(action?: DetailSurfaceInspectorReviewState["action"]) {
+  if (action === "protocol_patch") return "协议修正";
+  if (action === "regenerate_image") return "重生图";
+  return "通过";
+}
+
+function getActionClassName(action?: DetailSurfaceInspectorReviewState["action"]) {
+  if (action === "protocol_patch") {
+    return "bg-blue-50 text-blue-700 ring-1 ring-inset ring-blue-500/20 dark:bg-blue-500/10 dark:text-blue-300";
+  }
+  if (action === "regenerate_image") {
+    return "bg-red-50 text-red-700 ring-1 ring-inset ring-red-500/20 dark:bg-red-500/10 dark:text-red-300";
+  }
+  return "bg-emerald-50 text-emerald-700 ring-1 ring-inset ring-emerald-500/20 dark:bg-emerald-500/10 dark:text-emerald-300";
+}
+
+export function DetailSurfaceInspectorPanel(params: {
+  surface: UiSurfaceSnapshot | null;
+  latestScreenValidation?: DetailSurfaceInspectorReviewState | null;
+}) {
+  if (!params.surface) return null;
+
+  const screenComponents = getUiSurfaceScreenComponents(params.surface);
+  const totalComponents = countUiSurfaceComponents(params.surface);
+  const totalTextBlocks = countUiSurfaceComponents(params.surface, "detail_text_block");
+  const totalScreens = screenComponents.length;
+
+  return (
+    <div className="mt-3 rounded-xl border border-border/50 bg-zinc-50/40 p-3 dark:bg-zinc-900/40">
+      <div className="mb-3 flex items-center justify-between gap-3">
+        <div className="flex items-center gap-2">
+          <LayoutTemplate className="h-4 w-4 text-violet-500" />
+          <div>
+            <p className="text-[11px] font-medium text-foreground">Detail Surface Inspector</p>
+            <p className="mt-0.5 text-[10px] text-muted-foreground">
+              <span className="font-mono">{params.surface.surfaceId}</span>
+            </p>
+          </div>
+        </div>
+        <span className="rounded-full bg-violet-50 px-2 py-0.5 text-[10px] font-medium text-violet-700 ring-1 ring-inset ring-violet-500/20 dark:bg-violet-500/10 dark:text-violet-300">
+          {params.surface.generationMode === "agent_layout" ? "AGENT Surface" : "Classic Surface"}
+        </span>
+      </div>
+
+      <div className="grid grid-cols-3 gap-2">
+        <div className="rounded-lg border border-border/40 bg-background/80 px-3 py-2 dark:bg-zinc-950/40">
+          <div className="flex items-center gap-1.5 text-[10px] text-muted-foreground">
+            <Layers3 className="h-3.5 w-3.5" />
+            Screens
+          </div>
+          <div className="mt-1 text-sm font-semibold text-foreground">{totalScreens}</div>
+        </div>
+        <div className="rounded-lg border border-border/40 bg-background/80 px-3 py-2 dark:bg-zinc-950/40">
+          <div className="flex items-center gap-1.5 text-[10px] text-muted-foreground">
+            <Blocks className="h-3.5 w-3.5" />
+            Components
+          </div>
+          <div className="mt-1 text-sm font-semibold text-foreground">{totalComponents}</div>
+        </div>
+        <div className="rounded-lg border border-border/40 bg-background/80 px-3 py-2 dark:bg-zinc-950/40">
+          <div className="flex items-center gap-1.5 text-[10px] text-muted-foreground">
+            <CheckCircle2 className="h-3.5 w-3.5" />
+            Text Blocks
+          </div>
+          <div className="mt-1 text-sm font-semibold text-foreground">{totalTextBlocks}</div>
+        </div>
+      </div>
+
+      <div className="mt-2 flex items-center justify-between rounded-lg border border-border/40 bg-background/80 px-3 py-2 dark:bg-zinc-950/40">
+        <div>
+          <div className="text-[10px] text-muted-foreground">Surface Validation</div>
+          <div className="mt-0.5 text-[11px] font-medium text-foreground">
+            {params.surface.validation?.passed === false
+              ? params.surface.validation.issues[0] || "存在待优化项"
+              : "当前 surface 已通过基础校验"}
+          </div>
+        </div>
+        <span
+          className={cn(
+            "rounded-full px-2 py-0.5 text-[10px] font-medium",
+            params.surface.validation?.passed === false
+              ? "bg-amber-50 text-amber-700 ring-1 ring-inset ring-amber-500/20 dark:bg-amber-500/10 dark:text-amber-300"
+              : "bg-emerald-50 text-emerald-700 ring-1 ring-inset ring-emerald-500/20 dark:bg-emerald-500/10 dark:text-emerald-300",
+          )}
+        >
+          {params.surface.validation?.passed === false ? "待优化" : "通过"}
+        </span>
+      </div>
+
+      <div className="mt-3 space-y-2">
+        {screenComponents.slice(0, 6).map((screenComponent) => {
+          const screenIndex = Number(screenComponent.props?.screenIndex || 0);
+          const textStack = getUiSurfaceChildren(params.surface, screenComponent.id).find(
+            (component) => component.type === "detail_text_stack",
+          );
+          const textBlocks = textStack
+            ? getUiSurfaceChildren(params.surface, textStack.id).filter(
+                (component) => component.type === "detail_text_block",
+              )
+            : [];
+          const titleBlock =
+            textBlocks.find((component) => component.props?.blockType === "title") || null;
+          const subtitleBlock =
+            textBlocks.find((component) => component.props?.blockType === "subtitle") || null;
+          const isLatestScreen = params.latestScreenValidation?.screenIndex === screenIndex;
+
+          return (
+            <div
+              key={screenComponent.id}
+              className={cn(
+                "rounded-lg border border-border/40 bg-background/80 px-3 py-2 dark:bg-zinc-950/40",
+                isLatestScreen && "border-blue-300/60 ring-1 ring-inset ring-blue-500/20",
+              )}
+            >
+              <div className="flex items-start justify-between gap-3">
+                <div className="min-w-0">
+                  <div className="text-[11px] font-medium text-foreground">
+                    第 {screenIndex} 屏
+                    {screenComponent.props?.screenType
+                      ? ` · ${String(screenComponent.props?.screenType)}`
+                      : ""}
+                  </div>
+                  <div className="mt-0.5 truncate text-[11px] text-foreground/85">
+                    {resolveUiSurfaceTextBinding(params.surface, titleBlock, "content") || "未定义标题"}
+                  </div>
+                  {subtitleBlock ? (
+                    <div className="mt-0.5 truncate text-[10px] text-muted-foreground">
+                      {resolveUiSurfaceTextBinding(params.surface, subtitleBlock, "content")}
+                    </div>
+                  ) : null}
+                </div>
+                <div className="flex shrink-0 items-center gap-2">
+                  <span className="rounded-full bg-zinc-100 px-2 py-0.5 text-[10px] font-medium text-zinc-700 dark:bg-zinc-800 dark:text-zinc-300">
+                    {textBlocks.length} 块
+                  </span>
+                  {isLatestScreen ? (
+                    <span
+                      className={cn(
+                        "rounded-full px-2 py-0.5 text-[10px] font-medium",
+                        getActionClassName(params.latestScreenValidation?.action),
+                      )}
+                    >
+                      {getActionLabel(params.latestScreenValidation?.action)}
+                    </span>
+                  ) : null}
+                </div>
+              </div>
+            </div>
+          );
+        })}
+      </div>
+    </div>
+  );
+}
diff --git a/components/canvas/DetailUiValidationPanel.tsx b/components/canvas/DetailUiValidationPanel.tsx
new file mode 100644
index 000000000..178206874
--- /dev/null
+++ b/components/canvas/DetailUiValidationPanel.tsx
@@ -0,0 +1,144 @@
+"use client";
+
+import { AlertCircle, CheckCircle2 } from "lucide-react";
+import { cn } from "@/lib/utils";
+
+type DetailUiValidationSnapshot = {
+  passed?: boolean;
+  issues?: string[];
+};
+
+type DetailUiReviewSnapshot = {
+  screenIndex: number;
+  action?: "pass" | "protocol_patch" | "regenerate_image";
+  passed?: boolean;
+  issues?: string[];
+};
+
+export function DetailUiValidationPanel(params: {
+  generationMode: "classic" | "agent_layout";
+  planValidation?: DetailUiValidationSnapshot | null;
+  latestScreenValidation?: DetailUiReviewSnapshot | null;
+  surfaceId?: string | null;
+}) {
+  const planIssues = Array.isArray(params.planValidation?.issues)
+    ? params.planValidation?.issues.filter(Boolean)
+    : [];
+  const latestIssues = Array.isArray(params.latestScreenValidation?.issues)
+    ? params.latestScreenValidation.issues.filter(Boolean)
+    : [];
+
+  if (!params.planValidation && !params.latestScreenValidation) {
+    return null;
+  }
+
+  const title =
+    params.generationMode === "agent_layout" ? "协议排版质检" : "排版与复审状态";
+  const hasPlanValidation = Boolean(params.planValidation);
+  const latestActionLabel =
+    params.latestScreenValidation?.action === "protocol_patch"
+      ? "已走协议修正"
+      : params.latestScreenValidation?.action === "regenerate_image"
+        ? "已要求重生图"
+        : "通过";
+
+  return (
+    <div className="mt-3 rounded-xl border border-border/50 bg-zinc-50/40 p-3 dark:bg-zinc-900/40">
+      <div className="mb-2 flex items-center justify-between gap-3">
+        <div className="flex items-center gap-2">
+          {params.planValidation?.passed === false || latestIssues.length > 0 ? (
+            <AlertCircle className="h-4 w-4 text-amber-500" />
+          ) : (
+            <CheckCircle2 className="h-4 w-4 text-emerald-500" />
+          )}
+          <p className="text-[11px] font-medium text-foreground">{title}</p>
+        </div>
+        <span className="text-[10px] text-muted-foreground">
+          {params.surfaceId
+            ? params.generationMode === "agent_layout"
+              ? "结构化 surface 已建立"
+              : "当前结果可继续复审"
+            : params.generationMode === "agent_layout"
+              ? "文字层可直接修正"
+              : "问题会触发二次修图"}
+        </span>
+      </div>
+
+      <div className="space-y-2">
+        <div className="flex items-start justify-between gap-3 rounded-lg border border-border/40 bg-background/80 px-3 py-2 dark:bg-zinc-950/40">
+          <div>
+            <div className="text-[11px] font-medium text-foreground">规划阶段</div>
+            <div className="mt-0.5 text-[10px] text-muted-foreground">
+              {params.planValidation?.passed === false
+                ? `发现 ${planIssues.length} 条协议/排版提示`
+                : hasPlanValidation
+                  ? "协议结构已通过基础校验"
+                  : "等待本轮规划结果"}
+            </div>
+          </div>
+          <span
+            className={cn(
+              "rounded-full px-2 py-0.5 text-[10px] font-medium",
+              !hasPlanValidation
+                ? "bg-zinc-100 text-zinc-600 ring-1 ring-inset ring-zinc-500/10 dark:bg-zinc-800 dark:text-zinc-300"
+                : params.planValidation?.passed === false
+                ? "bg-amber-50 text-amber-700 ring-1 ring-inset ring-amber-500/20 dark:bg-amber-500/10 dark:text-amber-300"
+                : "bg-emerald-50 text-emerald-700 ring-1 ring-inset ring-emerald-500/20 dark:bg-emerald-500/10 dark:text-emerald-300",
+            )}
+          >
+            {!hasPlanValidation
+              ? "待开始"
+              : params.planValidation?.passed === false
+                ? "待优化"
+                : "通过"}
+          </span>
+        </div>
+
+        {params.latestScreenValidation ? (
+          <div className="flex items-start justify-between gap-3 rounded-lg border border-border/40 bg-background/80 px-3 py-2 dark:bg-zinc-950/40">
+            <div>
+              <div className="text-[11px] font-medium text-foreground">
+                最近一屏：第 {params.latestScreenValidation.screenIndex} 屏
+              </div>
+              <div className="mt-0.5 text-[10px] text-muted-foreground">
+                {params.latestScreenValidation.passed === false
+                  ? latestIssues[0] || "存在可优化项"
+                  : "最近一屏已通过当前质检"}
+              </div>
+            </div>
+            <span
+              className={cn(
+                "rounded-full px-2 py-0.5 text-[10px] font-medium",
+                params.latestScreenValidation.action === "regenerate_image"
+                  ? "bg-red-50 text-red-700 ring-1 ring-inset ring-red-500/20 dark:bg-red-500/10 dark:text-red-300"
+                  : params.latestScreenValidation.action === "protocol_patch"
+                    ? "bg-blue-50 text-blue-700 ring-1 ring-inset ring-blue-500/20 dark:bg-blue-500/10 dark:text-blue-300"
+                    : "bg-emerald-50 text-emerald-700 ring-1 ring-inset ring-emerald-500/20 dark:bg-emerald-500/10 dark:text-emerald-300",
+              )}
+            >
+              {latestActionLabel}
+            </span>
+          </div>
+        ) : null}
+
+        {(planIssues.length > 0 || latestIssues.length > 0) && (
+          <div className="rounded-lg border border-dashed border-border/40 bg-background/60 px-3 py-2 dark:bg-zinc-950/30">
+            <div className="text-[10px] font-medium uppercase tracking-wide text-muted-foreground">
+              当前关注点
+            </div>
+            <div className="mt-1 space-y-1">
+              {[...planIssues, ...latestIssues]
+                .filter((item, index, array) => array.indexOf(item) === index)
+                .slice(0, 3)
+                .map((issue) => (
+                  <div key={issue} className="text-[11px] leading-5 text-foreground/85">
+                    · {issue}
+                  </div>
+                ))}
+            </div>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}
diff --git a/docs/Canvas-UI-Surface-Protocol-设计方案-2026-03-21.md b/docs/Canvas-UI-Surface-Protocol-设计方案-2026-03-21.md
new file mode 100644
index 000000000..61a482990
--- /dev/null
+++ b/docs/Canvas-UI-Surface-Protocol-设计方案-2026-03-21.md
@@ -0,0 +1,873 @@
+# Canvas UI Surface Protocol 设计方案（基于 Google Stitch / A2UI 调研）
+
+> 日期：2026-03-21
+> 目标：把我们当前“会聊天、会生图、会在画布上落结果”的 Agent，升级成“能稳定产出结构化界面、支持交互、支持持续迭代、支持原型播放”的系统。
+
+---
+
+## 1. 先说结论
+
+### 1.1 Google Stitch 对我们的帮助是什么
+
+从官方资料看，**Stitch 的核心路线不是单纯生一张 UI 图，而是把“想法 → 界面设计 → 代码/原型”缩短为一条连续链路**。
+
+目前我能确认到的官方能力有：
+
+- 2025-05-20：支持 **自然语言/图片/线框 → UI 设计 + 前端代码**，支持 **交互式迭代**、**多版本探索**、**Paste to Figma**、**导出前端代码**。
+- 2025-11-18 之后：随着 Gemini 3 接入，官方明确提到 Stitch 的 **UI 生成质量提升**。
+- 2025-12-23：官方确认 **Nano Banana Pro** 已可在 Stitch 中使用，说明 Stitch 已接入更强图像生成/编辑能力。
+- 2026-02（官方可检索到的最新明确更新）：Google 官方已给 Stitch 加入 **Prototypes**，可以把多个 screen 串成 **可交互原型流**。
+
+### 1.2 A2UI 对我们的帮助是什么
+
+A2UI 最值得我们学的不是视觉风格，而是它的**运行时协议思想**：
+
+- Agent 不直接输出任意 HTML/JS，而是输出 **声明式 UI 协议**
+- 客户端只渲染 **白名单 catalog 中的可信组件**
+- **结构（components）** 与 **数据（data model）** 分离
+- 支持 **增量更新**
+- 支持 **用户动作回传给 Agent**
+
+这套思想非常适合我们，因为我们现在最缺的不是“多一个好看的卡片”，而是**Agent 产出 UI 的统一运行时**。
+
+### 1.3 最终判断
+
+我们最优路线不是“抄 Stitch UI”，也不是“整套照搬 A2UI”，而是：
+
+1. **借鉴 Stitch 的产品路线**：从结果图升级到“设计迭代 + 原型 + 代码/结构化输出”
+2. **借鉴 A2UI 的系统路线**：把 Agent 输出收进统一的 UI Surface Protocol
+3. **结合我们现有 conversation-state-protocol**：形成“对话理解协议 + UI surface 协议”双协议架构
+
+---
+
+## 2. 外部调研纠偏
+
+### 2.1 关于 Stitch，需要纠正的点
+
+我这次在线检索后，**没有找到 Google 官方可验证来源**来证明以下功能已经正式公开：
+
+- “DESIGN.md”
+- “Agent Manager”
+- “无限画布”
+- “语音设计批改”
+
+这些概念在社区讨论和第三方文章里有出现，但**本方案不把它们当作已被官方确认的能力**。
+
+本方案只基于已确认的官方信息来提炼技术路线：
+
+- 多模态输入
+- UI 生成
+- 多版本探索
+- Figma / 前端代码导出
+- 原型串联
+- 更强图像模型接入
+
+### 2.2 关于 A2UI，需要纠正的点
+
+A2UI 非常强，但它**不是“可直接拿来替代我们前端”的现成方案**。
+
+官方 README 里明确写了：
+
+- 目前仍是 **Early stage public preview**
+- v0.8 可用，但协议仍在演进
+- 适合学习其 **协议设计、渲染器架构、catalog 白名单机制**
+- 不适合让我们当前系统重度依赖其未稳定版本
+
+所以正确姿势是：**借鉴架构，不强绑定实现**。
+
+---
+
+## 3. 我们当前系统已经具备的基础
+
+### 3.1 已有的对话/工作流协议基础
+
+我们已经有一条很重要的底座：
+
+- `lib/ai/conversation-state-protocol.ts`
+- `lib/ai/conversation-state-protocol-events.ts`
+
+这意味着我们已经不是“全靠 route 里写很多 if/else”的状态了，而是已经有：
+
+- 工作状态读取
+- 事件化写回
+- 图片/视频/分镜等流程记忆
+- 用户意图与上下文边界管理
+
+这部分非常重要，它可以继续作为**上层 Agent 理解协议**保留。
+
+### 3.2 已有的详情模式 UI 协议雏形
+
+我们已经做了 detail mode 的第一代结构化协议：
+
+- `lib/detail-ui-protocol.ts`
+- `lib/detail-ui-renderer.ts`
+- `lib/detail-ui-validator.ts`
+- `app/api/canvas/detail-plan/route.ts`
+- `app/api/canvas/detail-review/route.ts`
+
+这说明我们已经迈出了最难的一步：
+
+- 不再只是一张整图
+- 开始区分背景图层与文字层
+- 开始让 review 直接 patch 协议
+
+但当前它仍然是**“详情模式专用协议”**，不是通用 UI Surface 协议。
+
+---
+
+## 4. 当前距离“最优体验”还缺什么
+
+如果以 Stitch 的产品方向 + A2UI 的系统方向为参照，我们还缺 8 个关键层级。
+
+### 4.1 缺统一 UI Surface 协议
+
+当前 `detail-ui-protocol` 只覆盖：
+
+- title
+- subtitle
+- body
+- safe area
+
+这还不是一个通用 UI 表达层，无法稳定表示：
+
+- 商品参数区
+- 卖点列表
+- 价格区
+- 对比表
+- 买家评价卡
+- 按钮区
+- 标签/角标/徽章
+- 多区域联动布局
+
+### 4.2 缺“结构”和“数据”的彻底分离
+
+A2UI 的一个核心点是：
+
+- 结构描述组件树
+- 数据模型存值
+- 组件通过 path 绑定数据
+
+我们现在 detail 协议里的文本内容还是直接写死在 block 里，导致：
+
+- 改一段文案需要改整个 block
+- 很难做局部 patch
+- 很难做模板复用
+
+### 4.3 缺用户动作回传协议
+
+现在的 Agent 还是更像“对话生成 + 画布落图”，还不是真正的“UI agent runtime”。
+
+我们缺：
+
+- 点击某个卡片后告诉 Agent 用户想放大这一块
+- 编辑某个标题后告诉 Agent 用户要保留结构仅改文案
+- 拖拽组件后告诉 Agent 用户偏好布局发生变化
+- 点击“生成变体”后让 Agent 只重做某个 section
+
+### 4.4 缺流式 patch 更新
+
+现在很多地方仍然是：
+
+- plan 完整返回
+- review 完整返回
+- 再由前端一次性处理
+
+缺少：
+
+- `surface.created`
+- `components.appended`
+- `data.updated`
+- `review.patch_applied`
+- `prototype.link_added`
+
+这种**统一流式 surface update**。
+
+### 4.5 缺受控组件 catalog
+
+我们目前的详情协议本质上还是自由度比较高的“文字块+图片”。
+
+真正稳定后，Agent 不应该直接自由拼任何 UI，而应该只能调用受控 catalog，例如：
+
+- `HeroBlock`
+- `SellingPointGrid`
+- `FeatureSpecTable`
+- `ComparisonCard`
+- `TrustBadgeRow`
+- `ReviewCard`
+- `CTASection`
+- `StickyBottomBar`
+
+这样才能保证：
+
+- 风格一致
+- 质量稳定
+- patch 容易
+- renderer 可预测
+
+### 4.6 缺原型图与 screen flow 层
+
+Stitch 已经明确加了 Prototypes。
+
+而我们现在详情模式仍偏“长图生产”，没有统一表达：
+
+- screen 之间跳转关系
+- 点击区域
+- hotspot
+- 状态切换
+- 原型播放
+
+如果未来我们想让“Agent详情模式”真正高级，必须支持：
+
+- 从静态 screen 升级为可交互 flow
+- 在画布里直接预览原型行为
+
+### 4.7 缺设计系统记忆层
+
+这是我们现在最容易被忽视，但长期最重要的能力。
+
+我们需要一个项目级设计系统记忆，不一定叫 `DESIGN.md`，但本质要存在：
+
+- 颜色 token
+- 字体等级
+- 间距规则
+- 卡片圆角
+- 阴影
+- 图片风格
+- 品牌语气
+- 常用 section 模板
+
+否则 Agent 每次都像第一次做设计，结果不可能稳定。
+
+### 4.8 缺多 Agent 分工
+
+现在很多能力压在一个 route 或一轮模型输出里。
+
+理想形态应该拆成：
+
+- Design Orchestrator
+- Surface Planner
+- Copy Agent
+- Visual Critic
+- Prototype Linker
+- Action Interpreter
+
+这样才能做到：
+
+- 规划与执行分离
+- 文案与布局分离
+- 质检与生成分离
+- 交互与渲染分离
+
+---
+
+## 5. 新目标：Canvas UI Surface Protocol（CUSP）
+
+建议正式定义一套内部协议：
+
+**Canvas UI Surface Protocol（简称 CUSP）**
+
+它不是替代 conversation-state-protocol，而是和它并列：
+
+- **Conversation State Protocol**：负责“用户在说什么、当前任务做到哪、记忆怎么延续”
+- **Canvas UI Surface Protocol**：负责“当前 UI 长什么样、有哪些组件、数据是什么、用户点了什么、下一步怎么 patch”
+
+---
+
+## 6. CUSP 的核心对象
+
+### 6.1 Surface
+
+一个可被 Agent 管理、可被前端渲染、可被 patch 的界面单元。
+
+建议字段：
+
+- `surfaceId`
+- `projectId`
+- `chatId`
+- `surfaceType`：`detail_page` / `agent_panel` / `storyboard` / `prototype_screen`
+- `mode`：`draft` / `review` / `published`
+- `designSystemId`
+- `rootComponentId`
+- `status`
+
+### 6.2 Components
+
+受控 catalog 中的组件树，建议采用 **扁平邻接表**，类似 A2UI 的思路。
+
+建议字段：
+
+- `id`
+- `type`
+- `parentId`
+- `slot`
+- `props`
+- `bindings`
+- `styleTokens`
+- `layout`
+- `visible`
+
+### 6.3 Data Model
+
+每个 surface 都应该有自己的数据模型。
+
+示例：
+
+```json
+{
+  "product": {
+    "name": "由点笔迹 离线日记",
+    "tagline": "离线可用，私密记录"
+  },
+  "hero": {
+    "title": "Capture your day, anytime.",
+    "subtitle": "离线优先的私人记录空间"
+  },
+  "sections": {
+    "features": [
+      { "title": "离线优先", "desc": "无网络也能访问内容" },
+      { "title": "隐私保护", "desc": "支持密码与 Face ID" }
+    ]
+  }
+}
+```
+
+### 6.4 Bindings
+
+组件不直接存最终文案，而是尽量绑定到 data model：
+
+- `text: { path: "/hero/title" }`
+- `items: { path: "/sections/features" }`
+
+这可以带来：
+
+- 改文案不改结构
+- 改数据不重做整屏
+- 可做局部翻译/局部重写
+
+### 6.5 Actions
+
+前端产生的交互动作，回传给 Agent。
+
+建议动作类型：
+
+- `surface.regenerate_section`
+- `surface.edit_copy`
+- `surface.move_component`
+- `surface.replace_asset`
+- `surface.generate_variant`
+- `surface.link_prototype`
+- `surface.publish_snapshot`
+
+### 6.6 Patch
+
+Agent 不应该每次都重新返回整棵 UI 树，而应该支持 patch：
+
+- `append_components`
+- `replace_component`
+- `remove_component`
+- `update_data`
+- `update_binding`
+- `update_style_tokens`
+- `reorder_children`
+
+---
+
+## 7. CUSP 与我们现有协议的关系
+
+### 7.1 不推翻 conversation-state-protocol
+
+现有：
+
+- `lib/ai/conversation-state-protocol.ts`
+- `lib/ai/conversation-state-protocol-events.ts`
+
+继续保留，负责：
+
+- 意图理解
+- 工作流阶段
+- 图片/视频/分镜记忆
+- 目标资产解析
+
+### 7.2 detail-ui-protocol 升级为 CUSP adapter
+
+现有：
+
+- `lib/detail-ui-protocol.ts`
+
+建议不要直接废弃，而是把它变成：
+
+- `detail-page` 类型 surface 的兼容适配器
+
+也就是说：
+
+- 旧 detail 协议仍可用
+- 新系统统一转成 CUSP surface
+- 渐进迁移，不一次性推倒
+
+### 7.3 Canvas node 变为 artifact / render target
+
+当前画布节点更像“结果容器”。
+
+未来建议分层：
+
+- `surface`：结构化 UI
+- `artifact`：图片、视频、导出图、切图结果
+- `canvas node`：在无限画布上的可视承载对象
+
+这样就能同时支持：
+
+- 一个 surface 多个版本
+- 一个版本多个 artifact
+- 一个 artifact 多个展示位置
+
+---
+
+## 8. 数据库设计建议
+
+### 8.1 `UiSurfaceSession`
+
+用于描述一个 surface 的主记录。
+
+建议字段：
+
+- `id`
+- `projectId`
+- `chatId`
+- `canvasId`
+- `surfaceType`
+- `mode`
+- `status`
+- `designSystemId`
+- `currentBranchId`
+- `latestSnapshotId`
+- `createdBy`
+- `createdAt`
+- `updatedAt`
+
+### 8.2 `UiSurfaceBranch`
+
+用于支持多方案探索。
+
+建议字段：
+
+- `id`
+- `surfaceSessionId`
+- `name`
+- `sourceSnapshotId`
+- `status`
+- `summary`
+- `createdAt`
+
+### 8.3 `UiSurfaceSnapshot`
+
+用于版本化保存协议结果。
+
+建议字段：
+
+- `id`
+- `surfaceSessionId`
+- `branchId`
+- `version`
+- `protocolVersion`
+- `surfaceJson`
+- `dataModelJson`
+- `validationJson`
+- `reviewJson`
+- `createdAt`
+
+### 8.4 `UiSurfaceAction`
+
+用于保存用户交互与 Agent 响应事件。
+
+建议字段：
+
+- `id`
+- `surfaceSessionId`
+- `snapshotId`
+- `actionType`
+- `actionPayload`
+- `source`：`user` / `agent` / `system`
+- `messageId`
+- `createdAt`
+
+### 8.5 `DesignSystemProfile`
+
+项目级设计记忆层。
+
+建议字段：
+
+- `id`
+- `projectId`
+- `name`
+- `brandVoice`
+- `colorTokensJson`
+- `typographyTokensJson`
+- `spacingTokensJson`
+- `componentRulesJson`
+- `imageStyleRulesJson`
+- `updatedAt`
+
+---
+
+## 9. API 设计建议
+
+### 9.1 规划接口
+
+`POST /api/canvas/ui-surface/plan`
+
+输入：
+
+- 用户需求
+- 当前项目上下文
+- 参考图/参考资产
+- design system profile
+- surfaceType
+
+输出：
+
+- `surfaceSession`
+- `initialSnapshot`
+- `validation`
+- `executionPlan`
+
+### 9.2 流式更新接口
+
+`POST /api/canvas/ui-surface/stream`
+
+输出事件建议：
+
+- `surface.created`
+- `branch.created`
+- `components.appended`
+- `data.updated`
+- `validation.updated`
+- `review.patch_ready`
+- `artifact.generated`
+- `surface.completed`
+
+### 9.3 动作回传接口
+
+`POST /api/canvas/ui-surface/action`
+
+前端把动作结构化发回：
+
+- 点击按钮
+- 编辑文案
+- 拖拽卡片
+- 请求生成变体
+- 接受/拒绝 Agent patch
+
+### 9.4 原型接口
+
+`POST /api/canvas/ui-surface/prototype/link`
+
+用于表达：
+
+- 当前 screen 到下一 screen 的跳转
+- hotspot
+- 过渡信息
+- 行为上下文
+
+### 9.5 导出接口
+
+`POST /api/canvas/ui-surface/export`
+
+导出方向：
+
+- JSON snapshot
+- 前端组件 DSL
+- Figma intermediary schema
+- 静态预览图
+
+---
+
+## 10. 前端渲染层建议
+
+### 10.1 新增 `SurfaceProvider`
+
+作用类似 A2UI Provider，但不强依赖其实现。
+
+职责：
+
+- 接收 surface snapshot / patch
+- 管理本地 data model
+- 管理交互 action
+- 维护 renderer catalog
+
+### 10.2 新增 `SurfaceRenderer`
+
+统一把 surface 渲染到：
+
+- 详情模式面板
+- Agent 详情模式
+- 原型预览器
+- 画布节点内部 preview
+
+### 10.3 新增 `SurfaceCatalog`
+
+统一注册可信组件：
+
+- `HeroBlock`
+- `FeatureGrid`
+- `SpecTable`
+- `ReviewCard`
+- `BadgeRow`
+- `CTASection`
+- `ComparisonTable`
+
+### 10.4 新增 `PrototypePlayer`
+
+用于：
+
+- screen 间跳转
+- 交互热点高亮
+- 模拟点击流程
+- 从静态详情升级到可交互原型
+
+### 10.5 新增 `SurfaceInspector`
+
+用于：
+
+- 查看当前组件树
+- 查看 data binding
+- 查看 validation issue
+- 人工修正 style token
+
+---
+
+## 11. Agent 侧需要新增的能力
+
+### 11.1 Design Orchestrator
+
+负责：
+
+- 理解用户目标
+- 选择 surfaceType
+- 分配子 Agent
+- 决定是改数据、改结构还是改资产
+
+### 11.2 Surface Planner
+
+负责：
+
+- 生成初始 surface 结构
+- 选择 catalog 组件
+- 输出 bindings 与 layout
+
+### 11.3 Copy Agent
+
+负责：
+
+- 生成标题/副标题/卖点文案
+- 根据品牌语气做变体
+- 局部重写
+
+### 11.4 Visual Critic
+
+负责：
+
+- 层级校验
+- 安全区校验
+- 文案长度校验
+- 信息顺序校验
+- 风格一致性校验
+
+### 11.5 Prototype Linker
+
+负责：
+
+- 定义按钮跳转关系
+- 定义 screen flow
+- 构建 demo 路径
+
+### 11.6 Action Interpreter
+
+负责：
+
+- 把用户在 UI 上的点击/编辑/拖拽解释成结构化意图
+- 决定下一步是 `update_data`、`replace_component` 还是 `generate_variant`
+
+---
+
+## 12. Prompt / System 规则要怎么升级
+
+我们现在的 Agent prompt 偏“直接回答用户”和“调用技能”。
+
+未来增加一层 UI surface 之后，prompt 里要明确告诉模型：
+
+### 12.1 什么时候输出 surface，而不是聊天文本
+
+例如：
+
+- 用户要求“给我一个详情页结构”
+- 用户要求“改这一块 UI”
+- 用户要求“把这个区域做三个方案”
+- 用户要求“把几屏串成演示流程”
+
+### 12.2 什么时候只 patch 数据，不重建结构
+
+例如：
+
+- “把标题再短一点”
+- “这一屏换成更像苹果风”
+- “第二块卖点文案改成更偏功能”
+
+### 12.3 什么时候只 patch 资产
+
+例如：
+
+- “把主图换成更干净的白底”
+- “把图标统一成线性风格”
+
+### 12.4 什么时候向用户确认
+
+例如：
+
+- 改动会影响整体结构
+- 需要重做多屏
+- 需要丢弃已有 branch
+- 需要进入 prototype flow
+
+---
+
+## 13. 推荐开发顺序（务实版）
+
+### Phase 1：把详情模式正式抽象成 surface
+
+目标：
+
+- 先不要碰所有 Agent UI
+- 先把 `AI详情生成` 升级成第一个正式的 `surfaceType=detail_page`
+
+产出：
+
+- `UiSurfaceSession`
+- `UiSurfaceSnapshot`
+- `SurfaceRenderer`
+- `detail-ui-protocol -> CUSP adapter`
+
+### Phase 2：支持 data model + binding
+
+目标：
+
+- title/subtitle/body 不再直接写死在 block 上
+- 让内容更新优先走 `data update`
+
+产出：
+
+- surface data model
+- path binding
+- copy patch
+
+### Phase 3：支持 action 回传
+
+目标：
+
+- 用户在 UI 上直接操作
+- Agent 理解这些操作，而不是都回退成聊天文本
+
+产出：
+
+- action schema
+- action -> protocol patch pipeline
+- 前端交互埋点
+
+### Phase 4：支持 branch / variant
+
+目标：
+
+- 用户一键出 2~4 套方案
+- 方案可以并行存在、比较、切换
+
+### Phase 5：支持 prototype flow
+
+目标：
+
+- screen 间连线
+- 点击预览
+- 演示模式
+
+---
+
+## 14. 这件事做成后，我们的体验会怎么变
+
+现在的模式更像：
+
+- Agent 理解用户
+- 生成结果
+- 落到画布
+
+升级后会变成：
+
+- Agent 理解用户
+- 决定输出 **聊天 / 工作流 / UI surface / 原型**
+- UI 不是一次性结果，而是一个可持续演化的对象
+- 用户在画布里的行为也成为 Agent 输入
+
+这时我们的 Agent 就不是“很多智能 patch”，而是真正的：
+
+**对话协议 + UI 协议 + 工作流协议** 三层统一系统。
+
+---
+
+## 15. 下一步的最小可落地任务
+
+建议立刻开始的第一批任务：
+
+1. 新建 `lib/ui-surface-protocol.ts`
+2. 定义 `Surface / Component / DataModel / Action / Patch` 基础 schema
+3. 新建 `lib/ui-surface-renderer.ts`
+4. 把 `detail-ui-protocol.ts` 适配到新 schema
+5. 新建 `UiSurfaceSession / UiSurfaceSnapshot` 两张表
+6. 增加 `/api/canvas/ui-surface/plan`
+7. 增加 `/api/canvas/ui-surface/action`
+8. 在 `CanvasChatPanel` 中插入 `SurfaceRenderer`
+9. 先支持 5 个基础组件：`HeroBlock / FeatureGrid / ReviewCard / CTASection / SpecTable`
+10. 再把 detail mode 升级为第一条正式 surface workflow
+
+---
+
+## 16. 参考资料（本次在线调研）
+
+### Google 官方：Stitch
+
+- Stitch 首发（2025-05-20）：  
+  https://developers.googleblog.com/stitch-a-new-way-to-design-uis/
+
+- Stitch 接入 Gemini 3 与 Prototypes：  
+  https://blog.google/innovation-and-ai/models-and-research/google-labs/stitch-gemini-3/
+
+- Nano Banana Pro 已可在 Stitch 中使用：  
+  https://blog.google/products-and-platforms/products/gemini/where-to-use-nano-banana-pro/
+
+### Google 官方：A2UI
+
+- A2UI README：  
+  https://github.com/google/A2UI
+
+- A2UI 数据绑定：  
+  https://github.com/google/A2UI/blob/main/docs/concepts/data-binding.md
+
+- A2UI Client-to-Server Actions：  
+  https://github.com/google/A2UI/blob/main/docs/concepts/client_to_server_actions.md
+
+- A2UI Renderers：  
+  https://github.com/google/A2UI/blob/main/docs/reference/renderers.md
+
+---
+
+## 17. 最终判断
+
+**Stitch 告诉我们产品应该长成什么样。**
+
+**A2UI 告诉我们底层协议应该怎么搭。**
+
+**而我们现有的 conversation-state-protocol，决定了我们有机会把“聪明 Agent”真正做成统一系统。**
+
+接下来不该再继续堆零散 patch。
+
+接下来应该正式进入：
+
+**Conversation State Protocol + Canvas UI Surface Protocol + Workflow Events**
+
+这三层统一化。
diff --git a/lib/db/migrations/0059_add_canvas_detail_surface_snapshot.sql b/lib/db/migrations/0059_add_canvas_detail_surface_snapshot.sql
new file mode 100644
index 000000000..0b8cd1ebe
--- /dev/null
+++ b/lib/db/migrations/0059_add_canvas_detail_surface_snapshot.sql
@@ -0,0 +1,5 @@
+ALTER TABLE "CanvasDetailArchive"
+  ADD COLUMN IF NOT EXISTS "uiSurfaceSnapshot" jsonb;
+
+ALTER TABLE "CanvasDetailArchive"
+  ADD COLUMN IF NOT EXISTS "uiSurfaceLatestReview" jsonb;
diff --git a/lib/db/schema.ts b/lib/db/schema.ts
index 1bb4099ec..067e021a6 100644
--- a/lib/db/schema.ts
+++ b/lib/db/schema.ts
@@ -696,6 +696,8 @@ export const canvasDetailArchive = pgTable("CanvasDetailArchive", {
   summary: text("summary"),
   imageCount: integer("imageCount"),
   coverUrl: text("coverUrl"),
+  uiSurfaceSnapshot: jsonb("uiSurfaceSnapshot").$type<Record<string, any> | null>(),
+  uiSurfaceLatestReview: jsonb("uiSurfaceLatestReview").$type<Record<string, any> | null>(),
   createdAt: timestamp("createdAt").notNull().defaultNow(),
   updatedAt: timestamp("updatedAt").notNull().defaultNow(),
 });
diff --git a/lib/detail-ui-protocol.ts b/lib/detail-ui-protocol.ts
index 12ea86b7a..12d9dfcb7 100644
--- a/lib/detail-ui-protocol.ts
+++ b/lib/detail-ui-protocol.ts
@@ -271,6 +271,93 @@ export function buildDetailUiProtocol(params: {
   };
 }
 
+function applyReviewHeuristicsToScreen(params: {
+  screen: DetailUiScreenProtocol;
+  screenSize: { width: number; height: number };
+  notes: DetailUiPatchNote[];
+}) {
+  const noteText = params.notes.map((note) => note.message).join(" | ").toLowerCase();
+  if (!noteText.trim()) {
+    return params.screen;
+  }
+
+  const emphasizeTitle =
+    /标题层级|headline|title hierarchy|主标题|标题不够突出|主副标题/.test(noteText);
+  const addBreathingRoom =
+    /留白|spacing|rhythm|拥挤|挤|crowd|breathing|间距/.test(noteText);
+  const protectHeadlineZone =
+    /顶部|headline zone|safe area|安全区|避免重叠|不要遮挡|hero/.test(noteText);
+  const softenBodyDensity =
+    /正文|文案过密|copy too dense|copy density|太多文字|可读性/.test(noteText);
+
+  const safeArea = {
+    ...params.screen.safeArea,
+    top: protectHeadlineZone
+      ? Math.min(params.screen.safeArea.top + 12, params.screen.safeArea.bottom - 120)
+      : params.screen.safeArea.top,
+  };
+  const gapTitleToSubtitle = addBreathingRoom ? 24 : 16;
+  const gapSubtitleToBody = addBreathingRoom ? 20 : 14;
+
+  let cursorY = safeArea.top;
+  const blocks = params.screen.blocks.map((block) => {
+    const nextBlock = {
+      ...block,
+      frame: { ...block.frame },
+      style: { ...block.style },
+    };
+
+    if (nextBlock.type === "title" && emphasizeTitle) {
+      nextBlock.style.fontSize = Math.min(84, nextBlock.style.fontSize + 4);
+      nextBlock.style.lineHeight = 1.12;
+    }
+
+    if (nextBlock.type === "subtitle" && emphasizeTitle) {
+      nextBlock.style.fontSize = Math.max(22, nextBlock.style.fontSize - 1);
+    }
+
+    if (nextBlock.type === "body" && softenBodyDensity) {
+      nextBlock.style.fontSize = Math.max(18, nextBlock.style.fontSize - 2);
+      nextBlock.style.lineHeight = 1.42;
+    }
+
+    const width = Math.max(
+      220,
+      Math.round(params.screenSize.width - safeArea.left - safeArea.right),
+    );
+    nextBlock.frame.x = safeArea.left;
+    nextBlock.frame.width = width;
+    nextBlock.frame.y = cursorY;
+    nextBlock.frame.height = estimateBlockHeight(
+      nextBlock.content,
+      nextBlock.style,
+      nextBlock.frame.width,
+      nextBlock.type === "title" ? 2 : nextBlock.type === "subtitle" ? 3 : 5,
+    );
+
+    if (nextBlock.type === "body") {
+      const maxBodyBottom = Math.max(cursorY + 80, safeArea.bottom);
+      nextBlock.frame.height = Math.min(nextBlock.frame.height, maxBodyBottom - cursorY);
+    }
+
+    cursorY +=
+      nextBlock.frame.height +
+      (nextBlock.type === "title"
+        ? gapTitleToSubtitle
+        : nextBlock.type === "subtitle"
+          ? gapSubtitleToBody
+          : 0);
+
+    return nextBlock;
+  });
+
+  return {
+    ...params.screen,
+    safeArea,
+    blocks,
+  } satisfies DetailUiScreenProtocol;
+}
+
 export function buildDetailUiReviewPatch(params: {
   generationMode: DetailGenerationMode;
   screenSize: { width: number; height: number };
@@ -280,6 +367,11 @@ export function buildDetailUiReviewPatch(params: {
   typographyFixes?: string[];
   conversionFixes?: string[];
 }): DetailUiScreenReviewPatch {
+  const notes = [
+    ...(params.layoutFixes || []).map((message) => ({ type: "layout" as const, message })),
+    ...(params.typographyFixes || []).map((message) => ({ type: "typography" as const, message })),
+    ...(params.conversionFixes || []).map((message) => ({ type: "conversion" as const, message })),
+  ];
   const protocol = buildDetailUiProtocol({
     generationMode: params.generationMode,
     screenSize: params.screenSize,
@@ -291,11 +383,11 @@ export function buildDetailUiReviewPatch(params: {
     version: "detail-ui-review-patch/v1",
     mode: params.generationMode,
     screenIndex: params.screen.index,
-    recommendedScreen: protocol.screens[0]!,
-    notes: [
-      ...(params.layoutFixes || []).map((message) => ({ type: "layout" as const, message })),
-      ...(params.typographyFixes || []).map((message) => ({ type: "typography" as const, message })),
-      ...(params.conversionFixes || []).map((message) => ({ type: "conversion" as const, message })),
-    ],
+    recommendedScreen: applyReviewHeuristicsToScreen({
+      screen: protocol.screens[0]!,
+      screenSize: params.screenSize,
+      notes,
+    }),
+    notes,
   };
 }
diff --git a/lib/detail-ui-renderer.ts b/lib/detail-ui-renderer.ts
index 08ee44e7e..75733e94b 100644
--- a/lib/detail-ui-renderer.ts
+++ b/lib/detail-ui-renderer.ts
@@ -1,10 +1,25 @@
 import type {
   DetailUiProtocol,
+  DetailUiScreenInput,
   DetailUiScreenReviewPatch,
 } from "@/lib/detail-ui-protocol";
+import {
+  getUiSurfaceChildren,
+  resolveUiSurfaceTextBinding,
+  type UiSurfaceSnapshot,
+} from "@/lib/ui-surface-protocol";
 import type { CanvasNode, TextNodeData } from "@/types/canvas";
 
-type CanvasTextNodeDraft = Omit<CanvasNode, "id" | "createdAt" | "updatedAt">;
+export type DetailTextLayerDraft = Omit<CanvasNode, "id" | "createdAt" | "updatedAt">;
+
+export type DetailTypographyTokens = {
+  titleFontSize: number;
+  titleFontWeight: string;
+  subtitleFontSize: number;
+  subtitleFontWeight: string;
+  bodyFontSize: number;
+  bodyFontWeight: string;
+};
 
 function createTextNodeDraft(params: {
   parentId: string;
@@ -19,7 +34,7 @@ function createTextNodeDraft(params: {
   lineHeight: number;
   textAlign: "left" | "center" | "right";
   metadata?: Record<string, unknown>;
-}): CanvasTextNodeDraft {
+}): DetailTextLayerDraft {
   return {
     type: "text",
     position: { x: params.x, y: params.y },
@@ -39,6 +54,19 @@ function createTextNodeDraft(params: {
   };
 }
 
+function createManagedDetailMetadata(params: {
+  screenIndex?: number;
+  blockId: string;
+  blockType: "title" | "subtitle" | "body";
+}) {
+  return {
+    detailUiManaged: true,
+    detailUiBlockId: params.blockId,
+    detailUiBlockType: params.blockType,
+    detailUiScreenIndex: params.screenIndex,
+  };
+}
+
 export function buildDetailTextLayerNodesFromProtocol(params: {
   parentNodeId: string;
   parentPosition: { x: number; y: number };
@@ -47,7 +75,7 @@ export function buildDetailTextLayerNodesFromProtocol(params: {
   screenProtocol?: DetailUiProtocol["screens"][number];
 }) {
   const protocolBlocks = params.screenProtocol?.blocks || [];
-  if (protocolBlocks.length === 0) return [] as CanvasTextNodeDraft[];
+  if (protocolBlocks.length === 0) return [] as DetailTextLayerDraft[];
 
   const scaleX = params.parentSize.width / Math.max(1, params.screenSize.width);
   const scaleY = params.parentSize.height / Math.max(1, params.screenSize.height);
@@ -65,11 +93,11 @@ export function buildDetailTextLayerNodesFromProtocol(params: {
       color: block.style.color,
       lineHeight: block.style.lineHeight,
       textAlign: block.style.textAlign,
-      metadata: {
-        detailUiBlockId: block.id,
-        detailUiBlockType: block.type,
-        detailUiScreenIndex: params.screenProtocol?.index,
-      },
+      metadata: createManagedDetailMetadata({
+        blockId: block.id,
+        blockType: block.type,
+        screenIndex: params.screenProtocol?.index,
+      }),
     }),
   );
 }
@@ -81,7 +109,7 @@ export function buildDetailTextLayerNodesFromReviewPatch(params: {
   screenSize: { width: number; height: number };
   uiPatch?: DetailUiScreenReviewPatch;
 }) {
-  if (!params.uiPatch) return [] as CanvasTextNodeDraft[];
+  if (!params.uiPatch) return [] as DetailTextLayerDraft[];
   return buildDetailTextLayerNodesFromProtocol({
     parentNodeId: params.parentNodeId,
     parentPosition: params.parentPosition,
@@ -91,6 +119,70 @@ export function buildDetailTextLayerNodesFromReviewPatch(params: {
   });
 }
 
+export function buildDetailTextLayerNodesFromSurfaceScreen(params: {
+  parentNodeId: string;
+  parentPosition: { x: number; y: number };
+  parentSize: { width: number; height: number };
+  surface: UiSurfaceSnapshot | null | undefined;
+  screenIndex: number;
+}) {
+  if (!params.surface) return [] as DetailTextLayerDraft[];
+
+  const screenComponent =
+    params.surface.components.find(
+      (component) =>
+        component.type === "detail_screen" &&
+        Number(component.props?.screenIndex || 0) === params.screenIndex,
+    ) || null;
+  if (!screenComponent) return [] as DetailTextLayerDraft[];
+
+  const textStack = getUiSurfaceChildren(params.surface, screenComponent.id).find(
+    (component) => component.type === "detail_text_stack",
+  );
+  if (!textStack) return [] as DetailTextLayerDraft[];
+
+  const scaleX = params.parentSize.width / Math.max(1, params.surface.screenSize.width);
+  const scaleY = params.parentSize.height / Math.max(1, params.surface.screenSize.height);
+
+  return getUiSurfaceChildren(params.surface, textStack.id)
+    .filter((component) => component.type === "detail_text_block")
+    .map((component) => {
+      const frame = (component.layout?.frame || {}) as {
+        x?: number;
+        y?: number;
+        width?: number;
+        height?: number;
+      };
+      const style = (component.style || {}) as Record<string, unknown>;
+      return createTextNodeDraft({
+        parentId: params.parentNodeId,
+        x: params.parentPosition.x + Math.round(Number(frame.x || 0) * scaleX),
+        y: params.parentPosition.y + Math.round(Number(frame.y || 0) * scaleY),
+        width: Math.max(120, Math.round(Number(frame.width || 240) * scaleX)),
+        height: Math.max(48, Math.round(Number(frame.height || 60) * scaleY)),
+        content: resolveUiSurfaceTextBinding(params.surface, component, "content"),
+        fontSize: Math.max(
+          12,
+          Math.round(Number(style.fontSize || 24) * Math.min(scaleX, scaleY)),
+        ),
+        fontWeight: String(style.fontWeight || "500"),
+        color: String(style.color || "#111827"),
+        lineHeight: Number(style.lineHeight || 1.3),
+        textAlign:
+          style.textAlign === "center" || style.textAlign === "right"
+            ? style.textAlign
+            : "left",
+        metadata: {
+          detailUiManaged: true,
+          detailUiBlockId: String(component.metadata?.blockId || component.id),
+          detailUiBlockType: String(component.metadata?.blockType || ""),
+          detailUiScreenIndex: params.screenIndex,
+          detailSurfaceComponentId: component.id,
+        },
+      });
+    });
+}
+
 export function buildLegacyDetailTextLayerNodes(params: {
   parentNodeId: string;
   parentPosition: { x: number; y: number };
@@ -108,7 +200,7 @@ export function buildLegacyDetailTextLayerNodes(params: {
 }) {
   const safeLeft = Math.round(params.parentWidth * 0.07);
   const textWidth = Math.max(240, Math.round(params.parentWidth - safeLeft * 2));
-  const drafts: CanvasTextNodeDraft[] = [];
+  const drafts: DetailTextLayerDraft[] = [];
 
   const titleText = String(params.title || "").trim();
   const subtitleText = String(params.subtitle || "").trim();
@@ -131,6 +223,11 @@ export function buildLegacyDetailTextLayerNodes(params: {
         color: "#111827",
         lineHeight: 1.15,
         textAlign: "left",
+        metadata: createManagedDetailMetadata({
+          blockId: `legacy-screen-${params.screenIndex + 1}-title`,
+          blockType: "title",
+          screenIndex: params.screenIndex + 1,
+        }),
       }),
     );
   }
@@ -149,6 +246,11 @@ export function buildLegacyDetailTextLayerNodes(params: {
         color: "#374151",
         lineHeight: 1.22,
         textAlign: "left",
+        metadata: createManagedDetailMetadata({
+          blockId: `legacy-screen-${params.screenIndex + 1}-subtitle`,
+          blockType: "subtitle",
+          screenIndex: params.screenIndex + 1,
+        }),
       }),
     );
   }
@@ -167,9 +269,65 @@ export function buildLegacyDetailTextLayerNodes(params: {
         color: "#4b5563",
         lineHeight: 1.38,
         textAlign: "left",
+        metadata: createManagedDetailMetadata({
+          blockId: `legacy-screen-${params.screenIndex + 1}-body`,
+          blockType: "body",
+          screenIndex: params.screenIndex + 1,
+        }),
       }),
     );
   }
 
   return drafts;
 }
+
+export function buildDetailTextLayerNodes(params: {
+  parentNodeId: string;
+  parentPosition: { x: number; y: number };
+  parentSize: { width: number; height: number };
+  screenSize: { width: number; height: number };
+  screenIndex: number;
+  screen?: Pick<DetailUiScreenInput, "title" | "subtitle" | "copy">;
+  screenProtocol?: DetailUiProtocol["screens"][number];
+  typography: DetailTypographyTokens;
+}) {
+  if (params.screenProtocol) {
+    return buildDetailTextLayerNodesFromProtocol({
+      parentNodeId: params.parentNodeId,
+      parentPosition: params.parentPosition,
+      parentSize: params.parentSize,
+      screenSize: params.screenSize,
+      screenProtocol: params.screenProtocol,
+    });
+  }
+
+  return buildLegacyDetailTextLayerNodes({
+    parentNodeId: params.parentNodeId,
+    parentPosition: params.parentPosition,
+    parentWidth: params.parentSize.width,
+    screenIndex: params.screenIndex,
+    title: params.screen?.title,
+    subtitle: params.screen?.subtitle,
+    body: params.screen?.copy,
+    titleFontSize: params.typography.titleFontSize,
+    titleFontWeight: params.typography.titleFontWeight,
+    subtitleFontSize: params.typography.subtitleFontSize,
+    subtitleFontWeight: params.typography.subtitleFontWeight,
+    bodyFontSize: params.typography.bodyFontSize,
+    bodyFontWeight: params.typography.bodyFontWeight,
+  });
+}
+
+export function collectManagedDetailTextLayerNodeIds(
+  nodes: CanvasNode[],
+  parentNodeId: string,
+) {
+  return nodes
+    .filter(
+      (node) =>
+        node.parentId === parentNodeId &&
+        node.type === "text" &&
+        Boolean((node.data as any)?.metadata?.detailUiManaged),
+    )
+    .map((node) => node.id);
+}
diff --git a/lib/detail-ui-surface-adapter.ts b/lib/detail-ui-surface-adapter.ts
new file mode 100644
index 000000000..ac1b4c695
--- /dev/null
+++ b/lib/detail-ui-surface-adapter.ts
@@ -0,0 +1,297 @@
+import type {
+  DetailGenerationMode,
+  DetailUiGlobalStyle,
+  DetailUiProtocol,
+  DetailUiScreenInput,
+  DetailUiScreenProtocol,
+  DetailUiScreenReviewPatch,
+} from "@/lib/detail-ui-protocol";
+import type {
+  UiSurfaceComponent,
+  UiSurfacePatch,
+  UiSurfaceSnapshot,
+} from "@/lib/ui-surface-protocol";
+
+function mapBlockTypeToBindingKey(blockType: "title" | "subtitle" | "body") {
+  if (blockType === "title") return "title";
+  if (blockType === "subtitle") return "subtitle";
+  return "copy";
+}
+
+function createDetailSurfaceId(params: {
+  generationMode: DetailGenerationMode;
+  screenCount: number;
+}) {
+  return `detail-surface-${params.generationMode}-${params.screenCount}-790x1300`;
+}
+
+function createRootComponent(): UiSurfaceComponent {
+  return {
+    id: "detail-page-root",
+    type: "detail_page_root",
+    parentId: null,
+    props: {
+      role: "detail_page",
+    },
+  };
+}
+
+function createScreenSubtree(params: {
+  screenIndex: number;
+  screen: Pick<
+    DetailUiScreenInput,
+    "title" | "subtitle" | "copy" | "screenType" | "objective" | "layoutNote"
+  >;
+  screenProtocol?: DetailUiScreenProtocol;
+  rootId?: string;
+}) {
+  const screenId = params.rootId || `detail-screen-${params.screenIndex}`;
+  const backgroundId = `${screenId}-background`;
+  const textStackId = `${screenId}-text-stack`;
+
+  const components: UiSurfaceComponent[] = [
+    {
+      id: screenId,
+      type: "detail_screen",
+      parentId: "detail-page-root",
+      props: {
+        screenIndex: params.screenIndex,
+        screenType: params.screen.screenType || "",
+        objective: params.screen.objective || "",
+        layoutNote: params.screen.layoutNote || "",
+      },
+      metadata: {
+        screenIndex: params.screenIndex,
+      },
+    },
+    {
+      id: backgroundId,
+      type: "detail_background_image",
+      parentId: screenId,
+      slot: "background",
+      props: {
+        screenIndex: params.screenIndex,
+      },
+      metadata: {
+        screenIndex: params.screenIndex,
+      },
+    },
+    {
+      id: textStackId,
+      type: "detail_text_stack",
+      parentId: screenId,
+      slot: "content",
+      props: {
+        screenIndex: params.screenIndex,
+        safeArea: params.screenProtocol?.safeArea || null,
+      },
+      metadata: {
+        screenIndex: params.screenIndex,
+      },
+    },
+  ];
+
+  const blocks = params.screenProtocol?.blocks || [];
+  blocks.forEach((block, blockIndex) => {
+    const bindingKey = mapBlockTypeToBindingKey(block.type);
+    components.push({
+      id: `${screenId}-text-${blockIndex + 1}`,
+      type: "detail_text_block",
+      parentId: textStackId,
+      props: {
+        blockType: block.type,
+        frame: block.frame,
+        textKey: bindingKey,
+      },
+      bindings: {
+        content: {
+          kind: "text",
+          path: `/screens/${params.screenIndex - 1}/${bindingKey}`,
+        },
+      },
+      style: {
+        fontFamily: block.style.fontFamily || "",
+        fontSize: block.style.fontSize,
+        fontWeight: block.style.fontWeight,
+        lineHeight: block.style.lineHeight,
+        color: block.style.color,
+        textAlign: block.style.textAlign,
+      },
+      layout: {
+        frame: block.frame,
+      },
+      metadata: {
+        screenIndex: params.screenIndex,
+        blockType: block.type,
+        blockId: block.id,
+      },
+    });
+  });
+
+  return components;
+}
+
+function buildDetailSurfaceDataModel(params: {
+  summary?: string;
+  screens: DetailUiScreenInput[];
+  globalStyle?: DetailUiGlobalStyle;
+}) {
+  return {
+    summary: params.summary || "",
+    globalStyle: params.globalStyle || {},
+    screens: params.screens.map((screen) => ({
+      index: screen.index,
+      title: String(screen.title || "").trim(),
+      subtitle: String(screen.subtitle || "").trim(),
+      copy: String(screen.copy || "").trim(),
+      screenType: screen.screenType || "",
+      objective: screen.objective || "",
+      layoutNote: screen.layoutNote || "",
+    })),
+  };
+}
+
+export function buildDetailUiSurfaceSnapshot(params: {
+  surfaceId?: string;
+  generationMode: DetailGenerationMode;
+  screenSize: { width: number; height: number };
+  summary?: string;
+  globalStyle?: DetailUiGlobalStyle;
+  screens: DetailUiScreenInput[];
+  uiProtocol?: DetailUiProtocol;
+  uiValidation?: {
+    passed: boolean;
+    issues: string[];
+  };
+}) {
+  const surfaceId =
+    params.surfaceId ||
+    createDetailSurfaceId({
+      generationMode: params.generationMode,
+      screenCount: params.screens.length,
+    });
+
+  const components: UiSurfaceComponent[] = [createRootComponent()];
+  params.screens.forEach((screen) => {
+    const screenProtocol = params.uiProtocol?.screens.find(
+      (item) => item.index === screen.index,
+    );
+    components.push(
+      ...createScreenSubtree({
+        screenIndex: screen.index,
+        screen,
+        screenProtocol,
+      }),
+    );
+  });
+
+  return {
+    version: "ui-surface/v1",
+    surfaceId,
+    surfaceType: "detail_page",
+    generationMode: params.generationMode,
+    rootComponentId: "detail-page-root",
+    screenSize: params.screenSize,
+    components,
+    dataModel: buildDetailSurfaceDataModel({
+      summary: params.summary,
+      screens: params.screens,
+      globalStyle: params.globalStyle,
+    }),
+    validation: params.uiValidation
+      ? {
+          passed: params.uiValidation.passed,
+          issues: params.uiValidation.issues,
+          source: "plan",
+        }
+      : undefined,
+    metadata: {
+      detailScreenCount: params.screens.length,
+    },
+  } satisfies UiSurfaceSnapshot;
+}
+
+export function buildDetailUiSurfacePatchFromReview(params: {
+  surfaceId: string;
+  screenIndex: number;
+  screen: Pick<
+    DetailUiScreenInput,
+    "index" | "title" | "subtitle" | "copy" | "screenType" | "objective" | "layoutNote"
+  >;
+  uiPatch?: DetailUiScreenReviewPatch;
+  uiValidation?: {
+    passed: boolean;
+    issues: string[];
+  };
+}) {
+  if (!params.uiPatch) return null;
+
+  const screenId = `detail-screen-${params.screenIndex}`;
+  const textStackId = `${screenId}-text-stack`;
+  const replacementComponents = createScreenSubtree({
+    screenIndex: params.screenIndex,
+    screen: params.screen,
+    screenProtocol: params.uiPatch.recommendedScreen,
+    rootId: screenId,
+  }).filter((component) => component.id === textStackId || component.parentId === textStackId);
+
+  return {
+    version: "ui-surface-patch/v1",
+    surfaceId: params.surfaceId,
+    surfaceType: "detail_page",
+    operations: [
+      {
+        type: "replace_component_subtree",
+        componentId: textStackId,
+        components: replacementComponents,
+      },
+      {
+        type: "set_data",
+        updates: [
+          {
+            path: `/screens/${params.screenIndex - 1}/title`,
+            value: String(params.screen.title || "").trim(),
+          },
+          {
+            path: `/screens/${params.screenIndex - 1}/subtitle`,
+            value: String(params.screen.subtitle || "").trim(),
+          },
+          {
+            path: `/screens/${params.screenIndex - 1}/copy`,
+            value: String(params.screen.copy || "").trim(),
+          },
+          {
+            path: `/screens/${params.screenIndex - 1}/layoutNote`,
+            value: String(params.screen.layoutNote || "").trim(),
+          },
+        ],
+      },
+      ...(params.uiValidation
+        ? [
+            {
+              type: "set_validation" as const,
+              validation: {
+                passed: params.uiValidation.passed,
+                issues: params.uiValidation.issues,
+                source: "review" as const,
+              },
+            },
+          ]
+        : []),
+    ],
+  } satisfies UiSurfacePatch;
+}
+
+export function findDetailSurfaceScreenComponent(
+  snapshot: UiSurfaceSnapshot | null | undefined,
+  screenIndex: number,
+) {
+  if (!snapshot) return null;
+  return (
+    snapshot.components.find(
+      (component) =>
+        component.type === "detail_screen" &&
+        Number(component.props?.screenIndex || 0) === screenIndex,
+    ) || null
+  );
+}
diff --git a/lib/ui-surface-protocol.ts b/lib/ui-surface-protocol.ts
new file mode 100644
index 000000000..10f451438
--- /dev/null
+++ b/lib/ui-surface-protocol.ts
@@ -0,0 +1,285 @@
+export type UiSurfaceType = "detail_page";
+
+export type UiSurfaceGenerationMode = "classic" | "agent_layout";
+
+export type UiSurfaceComponentType =
+  | "detail_page_root"
+  | "detail_screen"
+  | "detail_background_image"
+  | "detail_text_stack"
+  | "detail_text_block";
+
+export type UiSurfaceTextBindingKey = "title" | "subtitle" | "copy";
+
+export interface UiSurfaceFrame {
+  x: number;
+  y: number;
+  width: number;
+  height: number;
+}
+
+export interface UiSurfaceBinding {
+  kind: "text";
+  path: string;
+}
+
+export interface UiSurfaceComponent {
+  id: string;
+  type: UiSurfaceComponentType;
+  parentId: string | null;
+  slot?: string;
+  props?: Record<string, unknown>;
+  bindings?: Record<string, UiSurfaceBinding | undefined>;
+  layout?: {
+    frame?: UiSurfaceFrame;
+    zIndex?: number;
+  };
+  style?: Record<string, unknown>;
+  metadata?: Record<string, unknown>;
+}
+
+export interface UiSurfaceValidation {
+  passed: boolean;
+  issues: string[];
+  source?: "plan" | "review";
+}
+
+export interface UiSurfaceSnapshot {
+  version: "ui-surface/v1";
+  surfaceId: string;
+  surfaceType: UiSurfaceType;
+  generationMode: UiSurfaceGenerationMode;
+  rootComponentId: string;
+  screenSize: {
+    width: number;
+    height: number;
+  };
+  components: UiSurfaceComponent[];
+  dataModel: Record<string, unknown>;
+  validation?: UiSurfaceValidation;
+  metadata?: Record<string, unknown>;
+}
+
+export interface UiSurfaceDataUpdate {
+  path: string;
+  value: unknown;
+}
+
+export type UiSurfacePatchOperation =
+  | {
+      type: "replace_component_subtree";
+      componentId: string;
+      components: UiSurfaceComponent[];
+    }
+  | {
+      type: "set_data";
+      updates: UiSurfaceDataUpdate[];
+    }
+  | {
+      type: "set_validation";
+      validation: UiSurfaceValidation;
+    };
+
+export interface UiSurfacePatch {
+  version: "ui-surface-patch/v1";
+  surfaceId: string;
+  surfaceType: UiSurfaceType;
+  operations: UiSurfacePatchOperation[];
+}
+
+function normalizePathSegments(path: string) {
+  return String(path || "")
+    .split("/")
+    .map((segment) => segment.trim())
+    .filter(Boolean);
+}
+
+function cloneValue<T>(value: T): T {
+  return JSON.parse(JSON.stringify(value)) as T;
+}
+
+function setValueAtPath(target: Record<string, unknown>, path: string, value: unknown) {
+  const segments = normalizePathSegments(path);
+  if (segments.length === 0) return target;
+
+  let pointer: unknown = target;
+  for (let index = 0; index < segments.length; index += 1) {
+    const segment = segments[index]!;
+    const isLast = index === segments.length - 1;
+    const nextSegment = segments[index + 1];
+    const nextIsIndex = nextSegment ? /^\d+$/.test(nextSegment) : false;
+
+    if (Array.isArray(pointer)) {
+      const arrayIndex = Number(segment);
+      if (!Number.isFinite(arrayIndex) || arrayIndex < 0) return target;
+
+      if (isLast) {
+        pointer[arrayIndex] = value;
+        return target;
+      }
+
+      if (
+        pointer[arrayIndex] === undefined ||
+        pointer[arrayIndex] === null ||
+        (typeof pointer[arrayIndex] !== "object" && !Array.isArray(pointer[arrayIndex]))
+      ) {
+        pointer[arrayIndex] = nextIsIndex ? [] : {};
+      }
+      pointer = pointer[arrayIndex] as unknown;
+      continue;
+    }
+
+    if (!pointer || typeof pointer !== "object") return target;
+    const objectPointer = pointer as Record<string, unknown>;
+
+    if (isLast) {
+      objectPointer[segment] = value;
+      return target;
+    }
+
+    const currentValue = objectPointer[segment];
+    if (
+      currentValue === undefined ||
+      currentValue === null ||
+      (typeof currentValue !== "object" && !Array.isArray(currentValue))
+    ) {
+      objectPointer[segment] = nextIsIndex ? [] : {};
+    }
+    pointer = objectPointer[segment] as unknown;
+  }
+
+  return target;
+}
+
+export function getUiSurfaceComponent(
+  snapshot: UiSurfaceSnapshot | null | undefined,
+  componentId: string,
+) {
+  if (!snapshot) return null;
+  return snapshot.components.find((component) => component.id === componentId) || null;
+}
+
+export function getUiSurfaceChildren(
+  snapshot: UiSurfaceSnapshot | null | undefined,
+  parentId: string,
+) {
+  if (!snapshot) return [];
+  return snapshot.components.filter((component) => component.parentId === parentId);
+}
+
+export function collectUiSurfaceDescendantIds(
+  snapshot: UiSurfaceSnapshot | null | undefined,
+  parentId: string,
+) {
+  if (!snapshot) return [];
+  const collected = new Set<string>();
+  const queue = [parentId];
+
+  while (queue.length > 0) {
+    const current = queue.shift();
+    if (!current) continue;
+    const children = snapshot.components.filter((component) => component.parentId === current);
+    children.forEach((child) => {
+      if (collected.has(child.id)) return;
+      collected.add(child.id);
+      queue.push(child.id);
+    });
+  }
+
+  return [...collected];
+}
+
+export function resolveUiSurfaceTextBinding(
+  snapshot: UiSurfaceSnapshot | null | undefined,
+  component: UiSurfaceComponent | null | undefined,
+  bindingKey: string,
+) {
+  if (!snapshot || !component) return "";
+  const binding = component.bindings?.[bindingKey];
+  if (!binding || binding.kind !== "text") {
+    return String(component.props?.[bindingKey] || "");
+  }
+
+  const segments = normalizePathSegments(binding.path);
+  let pointer: unknown = snapshot.dataModel;
+  for (const segment of segments) {
+    if (Array.isArray(pointer)) {
+      const arrayIndex = Number(segment);
+      if (!Number.isFinite(arrayIndex)) return "";
+      pointer = pointer[arrayIndex];
+      continue;
+    }
+    if (!pointer || typeof pointer !== "object") return "";
+    pointer = (pointer as Record<string, unknown>)[segment];
+  }
+
+  return typeof pointer === "string" ? pointer : String(pointer || "");
+}
+
+export function applyUiSurfacePatch(
+  snapshot: UiSurfaceSnapshot | null | undefined,
+  patch: UiSurfacePatch | null | undefined,
+) {
+  if (!snapshot || !patch) return snapshot || null;
+  if (
+    patch.version !== "ui-surface-patch/v1" ||
+    patch.surfaceType !== snapshot.surfaceType ||
+    patch.surfaceId !== snapshot.surfaceId
+  ) {
+    return snapshot;
+  }
+
+  const nextSnapshot = cloneValue(snapshot);
+
+  patch.operations.forEach((operation) => {
+    if (operation.type === "replace_component_subtree") {
+      const descendantIds = collectUiSurfaceDescendantIds(nextSnapshot, operation.componentId);
+      const removeIdSet = new Set(descendantIds);
+      nextSnapshot.components = nextSnapshot.components.filter(
+        (component) => !removeIdSet.has(component.id),
+      );
+
+      const replacementComponentIds = new Set(operation.components.map((component) => component.id));
+      nextSnapshot.components = nextSnapshot.components.filter(
+        (component) => !replacementComponentIds.has(component.id),
+      );
+      nextSnapshot.components.push(...cloneValue(operation.components));
+      return;
+    }
+
+    if (operation.type === "set_data") {
+      operation.updates.forEach((update) => {
+        setValueAtPath(nextSnapshot.dataModel, update.path, update.value);
+      });
+      return;
+    }
+
+    if (operation.type === "set_validation") {
+      nextSnapshot.validation = cloneValue(operation.validation);
+    }
+  });
+
+  return nextSnapshot;
+}
+
+export function countUiSurfaceComponents(
+  snapshot: UiSurfaceSnapshot | null | undefined,
+  type?: UiSurfaceComponentType,
+) {
+  if (!snapshot) return 0;
+  return type
+    ? snapshot.components.filter((component) => component.type === type).length
+    : snapshot.components.length;
+}
+
+export function getUiSurfaceScreenComponents(
+  snapshot: UiSurfaceSnapshot | null | undefined,
+) {
+  if (!snapshot) return [] as UiSurfaceComponent[];
+  return snapshot.components
+    .filter((component) => component.type === "detail_screen")
+    .sort(
+      (left, right) =>
+        Number(left.props?.screenIndex || 0) - Number(right.props?.screenIndex || 0),
+    );
+}