diff --git a/apps/ai-game-creator-shell/src-tauri/src/project/resource_dependency_graph.rs b/apps/ai-game-creator-shell/src-tauri/src/project/resource_dependency_graph.rs
index 54630f25e..3cf87fe77 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/project/resource_dependency_graph.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/project/resource_dependency_graph.rs
@@ -50,6 +50,7 @@ pub(crate) struct ProjectResourceConnectionIndex {
 pub(crate) struct ProjectResourceProducerAssignment {
     pub resource_id: String,
     pub task_id: String,
+    pub dependency_depth: u32,
 }
 
 #[derive(Clone, Debug, Eq, PartialEq, Serialize)]
@@ -77,6 +78,7 @@ struct DirectedEdge {
 struct CycleAnalysis {
     cyclic_node_ids: BTreeSet<String>,
     cyclic_edge_ids: BTreeSet<String>,
+    component_by_node: BTreeMap<String, usize>,
 }
 
 #[derive(Debug, Default)]
@@ -185,9 +187,68 @@ fn analyze_directed_cycles<'a>(
             result.cyclic_edge_ids.insert(edge.id.clone());
         }
     }
+    result.component_by_node = component_by_node;
     result
 }
 
+fn dependency_depth_by_node(
+    analysis: &CycleAnalysis,
+    edges: &[DirectedEdge],
+) -> BTreeMap<String, u32> {
+    let component_count = analysis
+        .component_by_node
+        .values()
+        .copied()
+        .max()
+        .map_or(0, |max_component| max_component + 1);
+    let mut outgoing = vec![BTreeSet::<usize>::new(); component_count];
+    let mut indegree = vec![0usize; component_count];
+    for edge in edges {
+        let Some(&source_component) = analysis.component_by_node.get(&edge.source_id) else {
+            continue;
+        };
+        let Some(&target_component) = analysis.component_by_node.get(&edge.target_id) else {
+            continue;
+        };
+        if source_component != target_component
+            && outgoing[source_component].insert(target_component)
+        {
+            indegree[target_component] += 1;
+        }
+    }
+
+    let mut ready = indegree
+        .iter()
+        .enumerate()
+        .filter_map(|(component, degree)| (*degree == 0).then_some(component))
+        .collect::<BTreeSet<_>>();
+    let mut depth_by_component = vec![0u32; component_count];
+    while let Some(component) = ready.pop_first() {
+        for &target in &outgoing[component] {
+            depth_by_component[target] =
+                depth_by_component[target].max(depth_by_component[component].saturating_add(1));
+            indegree[target] -= 1;
+            if indegree[target] == 0 {
+                ready.insert(target);
+            }
+        }
+    }
+
+    analysis
+        .component_by_node
+        .iter()
+        .map(|(node_id, component)| {
+            (
+                node_id.clone(),
+                depth_by_component
+                    .get(*component)
+                    .copied()
+                    .unwrap_or_default(),
+            )
+        })
+        .collect()
+}
+
 fn audit_asset_producers(
     records: &[serde_json::Value],
     task_ids: &BTreeSet<String>,
@@ -403,6 +464,7 @@ pub(crate) fn build_project_resource_graph(
         })
         .collect::<Vec<_>>();
     let task_cycles = analyze_directed_cycles(task_by_id.keys(), &task_dependency_edges);
+    let task_dependency_depths = dependency_depth_by_node(&task_cycles, &task_dependency_edges);
     let task_flows = task_dependency_edges
         .iter()
         .filter_map(|edge| {
@@ -476,6 +538,10 @@ pub(crate) fn build_project_resource_graph(
             .into_iter()
             .map(|(resource_id, task_id)| ProjectResourceProducerAssignment {
                 resource_id,
+                dependency_depth: task_dependency_depths
+                    .get(&task_id)
+                    .copied()
+                    .unwrap_or_default(),
                 task_id,
             })
             .collect(),
@@ -610,6 +676,14 @@ mod tests {
         assert_eq!(graph.task_flows.len(), 1);
         assert_eq!(graph.task_flows[0].source_task_id, "art-director");
         assert_eq!(graph.task_flows[0].target_task_id, "design-foundation");
+        assert_eq!(
+            graph
+                .producer_assignments
+                .iter()
+                .map(|assignment| (assignment.resource_id.as_str(), assignment.dependency_depth,))
+                .collect::<BTreeMap<_, _>>(),
+            BTreeMap::from([("asset:spec", 0), ("asset:ui", 1)]),
+        );
         assert!(graph
             .producer_assignments
             .iter()
@@ -734,5 +808,46 @@ mod tests {
             .connection_index
             .iter()
             .all(|index| index.task_flow_ids.len() <= 2));
+        assert_eq!(
+            graph
+                .producer_assignments
+                .iter()
+                .find(|assignment| assignment.resource_id == "resource:4095")
+                .map(|assignment| assignment.dependency_depth),
+            Some(4095),
+        );
+    }
+
+    #[test]
+    fn dependency_depth_collapses_cycles_before_following_downstream_tasks() {
+        let graph = build_project_resource_graph(
+            &manifest(
+                vec![
+                    task("source", &[]),
+                    task("cycle-a", &["source", "cycle-b"]),
+                    task("cycle-b", &["cycle-a"]),
+                    task("target", &["cycle-b"]),
+                ],
+                Vec::new(),
+            ),
+            vec![
+                resource("source-resource", None, Some("source")),
+                resource("cycle-a-resource", None, Some("cycle-a")),
+                resource("cycle-b-resource", None, Some("cycle-b")),
+                resource("target-resource", None, Some("target")),
+            ],
+            &[],
+            false,
+        );
+
+        let depths = graph
+            .producer_assignments
+            .iter()
+            .map(|assignment| (assignment.resource_id.as_str(), assignment.dependency_depth))
+            .collect::<BTreeMap<_, _>>();
+        assert_eq!(depths["source-resource"], 0);
+        assert_eq!(depths["cycle-a-resource"], 1);
+        assert_eq!(depths["cycle-b-resource"], 1);
+        assert_eq!(depths["target-resource"], 2);
     }
 }
diff --git a/apps/ai-game-creator-shell/src/view/project-development/ResourceDependencyOverlay.tsx b/apps/ai-game-creator-shell/src/view/project-development/ResourceDependencyOverlay.tsx
index 238abba58..19ccd9bbb 100644
--- a/apps/ai-game-creator-shell/src/view/project-development/ResourceDependencyOverlay.tsx
+++ b/apps/ai-game-creator-shell/src/view/project-development/ResourceDependencyOverlay.tsx
@@ -1,4 +1,13 @@
-import { useId, useLayoutEffect, useMemo, useRef, useState } from 'react';
+import {
+  forwardRef,
+  useCallback,
+  useId,
+  useImperativeHandle,
+  useLayoutEffect,
+  useMemo,
+  useRef,
+  useState,
+} from 'react';
 
 import type {
   ProjectResourceCanvasPosition,
@@ -34,11 +43,21 @@ type RectLookup = {
 export type ResourceDependencyOverlayProps = {
   graph: ProjectResourceGraph;
   positions: readonly ProjectResourceCanvasPosition[];
-  dragPreview: (Point & { resourceId: string }) | null;
   visibleResourceIds: ReadonlySet<string>;
   selectedResourceId: string | null;
 };
 
+export type ResourceDependencyOverlayHandle = {
+  updateDragPreview: (preview: Point & { resourceId: string }) => void;
+  clearDragPreview: () => void;
+};
+
+type TaskFlowPathRefs = {
+  sourceBranches: Map<string, SVGPathElement>;
+  targetBranches: Map<string, SVGPathElement>;
+  trunk: SVGPathElement | null;
+};
+
 const SECTION_SELECTOR = '[data-resource-section-plane]';
 const TASK_FLOW_HUB_GAP = 20;
 const CONNECTION_MAX_HANDLE = 180;
@@ -200,18 +219,25 @@ function taskFlowGeometry(
   return { sourceAnchors, targetAnchors, sourceHub, targetHub };
 }
 
-export function ResourceDependencyOverlay({
-  graph,
-  positions,
-  dragPreview,
-  visibleResourceIds,
-  selectedResourceId,
-}: ResourceDependencyOverlayProps) {
+export const ResourceDependencyOverlay = forwardRef<
+  ResourceDependencyOverlayHandle,
+  ResourceDependencyOverlayProps
+>(function ResourceDependencyOverlay(
+  { graph, positions, visibleResourceIds, selectedResourceId },
+  ref,
+) {
   const markerPrefix = useId().replace(/[^a-zA-Z0-9_-]/gu, '');
   const overlayRef = useRef<SVGSVGElement>(null);
   const referencePathRefs = useRef(new Map<string, SVGPathElement>());
-  const taskFlowGroupRefs = useRef(new Map<string, SVGGElement>());
-  const activeDragResourceIdRef = useRef<string | null>(null);
+  const taskFlowPathRefs = useRef(new Map<string, TaskFlowPathRefs>());
+  const activeDragPreviewRef = useRef<
+    (Point & { resourceId: string }) | null
+  >(null);
+  const graphRef = useRef(graph);
+  const positionByResourceIdRef = useRef(
+    new Map(positions.map((position) => [position.resourceId, position])),
+  );
+  const rectByResourceIdRef = useRef<Map<string, Rect>>(new Map());
   const [sectionOrigins, setSectionOrigins] = useState<SectionOrigins>({});
 
   useLayoutEffect(() => {
@@ -290,6 +316,11 @@ export function ResourceDependencyOverlay({
     }
     return result;
   }, [graph.resourceIds, positions, sectionOrigins, visibleResourceIds]);
+  graphRef.current = graph;
+  positionByResourceIdRef.current = new Map(
+    positions.map((position) => [position.resourceId, position]),
+  );
+  rectByResourceIdRef.current = rectByResourceId;
 
   const neighbors = useMemo(
     () => projectResourceGraphNeighbors(graph, selectedResourceId),
@@ -312,13 +343,6 @@ export function ResourceDependencyOverlay({
         }${flow.cyclic ? ' is-cyclic' : ''}`;
         return (
           <g
-            ref={(node) => {
-              if (node) {
-                taskFlowGroupRefs.current.set(flow.id, node);
-              } else {
-                taskFlowGroupRefs.current.delete(flow.id);
-              }
-            }}
             key={flow.id}
             className={className}
             data-edge-kind="task-flow"
@@ -332,6 +356,22 @@ export function ResourceDependencyOverlay({
             }`}</title>
             {geometry.sourceAnchors.map(({ resourceId, point }) => (
               <path
+                ref={(node) => {
+                  let refs = taskFlowPathRefs.current.get(flow.id);
+                  if (!refs) {
+                    refs = {
+                      sourceBranches: new Map(),
+                      targetBranches: new Map(),
+                      trunk: null,
+                    };
+                    taskFlowPathRefs.current.set(flow.id, refs);
+                  }
+                  if (node) {
+                    refs.sourceBranches.set(resourceId, node);
+                  } else {
+                    refs.sourceBranches.delete(resourceId);
+                  }
+                }}
                 key={`source:${resourceId}`}
                 className="game-resource-dependency-branch"
                 data-branch-side="source"
@@ -340,11 +380,39 @@ export function ResourceDependencyOverlay({
               />
             ))}
             <path
+              ref={(node) => {
+                let refs = taskFlowPathRefs.current.get(flow.id);
+                if (!refs) {
+                  refs = {
+                    sourceBranches: new Map(),
+                    targetBranches: new Map(),
+                    trunk: null,
+                  };
+                  taskFlowPathRefs.current.set(flow.id, refs);
+                }
+                refs.trunk = node;
+              }}
               className="game-resource-dependency-trunk"
               d={connectionPath(geometry.sourceHub, geometry.targetHub)}
             />
             {geometry.targetAnchors.map(({ resourceId, point }) => (
               <path
+                ref={(node) => {
+                  let refs = taskFlowPathRefs.current.get(flow.id);
+                  if (!refs) {
+                    refs = {
+                      sourceBranches: new Map(),
+                      targetBranches: new Map(),
+                      trunk: null,
+                    };
+                    taskFlowPathRefs.current.set(flow.id, refs);
+                  }
+                  if (node) {
+                    refs.targetBranches.set(resourceId, node);
+                  } else {
+                    refs.targetBranches.delete(resourceId);
+                  }
+                }}
                 key={`target:${resourceId}`}
                 className="game-resource-dependency-branch"
                 data-branch-side="target"
@@ -410,49 +478,49 @@ export function ResourceDependencyOverlay({
   );
 
   useLayoutEffect(() => {
-    const affectedResourceIds = new Set<string>();
-    if (activeDragResourceIdRef.current) {
-      affectedResourceIds.add(activeDragResourceIdRef.current);
-    }
-    if (dragPreview) {
-      affectedResourceIds.add(dragPreview.resourceId);
-    }
-    activeDragResourceIdRef.current = dragPreview?.resourceId ?? null;
-    if (affectedResourceIds.size === 0) {
-      return;
+    const activeFlowIds = new Set(graph.taskFlows.map((flow) => flow.id));
+    for (const flowId of taskFlowPathRefs.current.keys()) {
+      if (!activeFlowIds.has(flowId)) {
+        taskFlowPathRefs.current.delete(flowId);
+      }
     }
+  }, [graph.taskFlows]);
+
+  const updateAffectedGeometry = useCallback(
+    (
+      affectedResourceIds: ReadonlySet<string>,
+      dragPreview: (Point & { resourceId: string }) | null,
+    ) => {
+    const currentGraph = graphRef.current;
+    const currentRects = rectByResourceIdRef.current;
     const dragBasePosition = dragPreview
-      ? positions.find(
-          (position) => position.resourceId === dragPreview.resourceId,
-        )
+      ? positionByResourceIdRef.current.get(dragPreview.resourceId)
       : undefined;
     const rectLookup = {
       get(resourceId: string) {
-        const rect = rectByResourceId.get(resourceId);
+        const rect = currentRects.get(resourceId);
         if (!rect) {
           return undefined;
         }
         return dragPreview?.resourceId === resourceId
           ? {
               ...rect,
-              x:
-                rect.x - (dragBasePosition?.x ?? 0) + dragPreview.x,
-              y:
-                rect.y - (dragBasePosition?.y ?? 0) + dragPreview.y,
+              x: rect.x - (dragBasePosition?.x ?? 0) + dragPreview.x,
+              y: rect.y - (dragBasePosition?.y ?? 0) + dragPreview.y,
             }
           : rect;
       },
     };
     const affectedEdgeIds = new Set<string>();
     for (const resourceId of affectedResourceIds) {
-      const index = graph.connectionIndex.get(resourceId);
+      const index = currentGraph.connectionIndex.get(resourceId);
       index?.referenceEdgeIds.forEach((edgeId) =>
         affectedEdgeIds.add(edgeId),
       );
       index?.taskFlowIds.forEach((flowId) => affectedEdgeIds.add(flowId));
     }
     for (const edgeId of affectedEdgeIds) {
-      const referenceEdge = graph.referenceEdgeById.get(edgeId);
+      const referenceEdge = currentGraph.referenceEdgeById.get(edgeId);
       if (referenceEdge) {
         const geometry = referenceGeometry(referenceEdge, rectLookup);
         const path = referencePathRefs.current.get(edgeId);
@@ -461,45 +529,29 @@ export function ResourceDependencyOverlay({
         }
         continue;
       }
-      const flow = graph.taskFlowById.get(edgeId);
-      const group = taskFlowGroupRefs.current.get(edgeId);
-      if (!flow || !group) {
+      const flow = currentGraph.taskFlowById.get(edgeId);
+      const paths = taskFlowPathRefs.current.get(edgeId);
+      if (!flow || !paths) {
         continue;
       }
       const geometry = taskFlowGeometry(flow, rectLookup);
       if (!geometry) {
         continue;
       }
-      const sourcePathByResourceId = new Map<string, SVGPathElement>();
-      const targetPathByResourceId = new Map<string, SVGPathElement>();
-      group
-        .querySelectorAll<SVGPathElement>('.game-resource-dependency-branch')
-        .forEach((path) => {
-          const resourceId = path.dataset.resourceId;
-          if (!resourceId) {
-            return;
-          }
-          (path.dataset.branchSide === 'source'
-            ? sourcePathByResourceId
-            : targetPathByResourceId
-          ).set(resourceId, path);
-        });
       geometry.sourceAnchors.forEach(({ resourceId, point }) => {
-        sourcePathByResourceId
+        paths.sourceBranches
           .get(resourceId)
           ?.setAttribute(
             'd',
             taskFlowBranchPath(point, geometry.sourceHub),
           );
       });
-      group
-        .querySelector<SVGPathElement>('.game-resource-dependency-trunk')
-        ?.setAttribute(
-          'd',
-          connectionPath(geometry.sourceHub, geometry.targetHub),
-        );
+      paths.trunk?.setAttribute(
+        'd',
+        connectionPath(geometry.sourceHub, geometry.targetHub),
+      );
       geometry.targetAnchors.forEach(({ resourceId, point }) => {
-        targetPathByResourceId
+        paths.targetBranches
           .get(resourceId)
           ?.setAttribute(
             'd',
@@ -507,7 +559,32 @@ export function ResourceDependencyOverlay({
           );
       });
     }
-  }, [dragPreview, graph, positions, rectByResourceId]);
+    },
+    [],
+  );
+
+  useImperativeHandle(
+    ref,
+    () => ({
+      updateDragPreview(preview) {
+        const affectedResourceIds = new Set<string>();
+        if (activeDragPreviewRef.current) {
+          affectedResourceIds.add(activeDragPreviewRef.current.resourceId);
+        }
+        affectedResourceIds.add(preview.resourceId);
+        activeDragPreviewRef.current = preview;
+        updateAffectedGeometry(affectedResourceIds, preview);
+      },
+      clearDragPreview() {
+        const active = activeDragPreviewRef.current;
+        activeDragPreviewRef.current = null;
+        if (active) {
+          updateAffectedGeometry(new Set([active.resourceId]), null);
+        }
+      },
+    }),
+    [updateAffectedGeometry],
+  );
 
   return (
     <svg
@@ -550,4 +627,4 @@ export function ResourceDependencyOverlay({
       {renderReferenceEdges}
     </svg>
   );
-}
+});
diff --git a/apps/ai-game-creator-shell/src/view/project-development/index.tsx b/apps/ai-game-creator-shell/src/view/project-development/index.tsx
index 3d8ed61bc..99870dfe7 100644
--- a/apps/ai-game-creator-shell/src/view/project-development/index.tsx
+++ b/apps/ai-game-creator-shell/src/view/project-development/index.tsx
@@ -18,6 +18,7 @@ import {
 } from 'lucide-react';
 import {
   type CSSProperties,
+  memo,
   type PointerEvent as ReactPointerEvent,
   type ReactNode,
   useCallback,
@@ -34,7 +35,6 @@ import type {
   GameCreationAppAgentGroup,
   GameCreationAppManifest,
   GameCreationAppPreviewState,
-  GameCreationAppTaskState,
   ProjectResourceCanvasLayoutMode,
   ProjectResourceCanvasSection,
 } from '../../../../../packages/shared/src/contracts/gameCreationApp';
@@ -58,7 +58,10 @@ import {
   type ProjectResourceGraphNodeInput,
   type ProjectResourceGraphReadModel,
 } from './resourceDependencyGraphModel';
-import { ResourceDependencyOverlay } from './ResourceDependencyOverlay';
+import {
+  ResourceDependencyOverlay,
+  type ResourceDependencyOverlayHandle,
+} from './ResourceDependencyOverlay';
 import { useProjectResourceCanvasLayout } from './useProjectResourceCanvasLayout';
 
 type AttachmentResult = {
@@ -88,6 +91,11 @@ type ResourceCardDrag = {
   startX: number;
   startY: number;
   moved: boolean;
+  element: HTMLButtonElement;
+  plane: HTMLElement | null;
+  planeBaseWidth: number;
+  planeBaseHeight: number;
+  visualGutter: number;
 };
 
 type ProjectResource = {
@@ -282,29 +290,6 @@ function imagePreviewErrorMessage(error: unknown) {
   return '图片暂时无法读取，请关闭后重试';
 }
 
-function taskDependencyDepth(
-  task: GameCreationAppTaskState,
-  taskById: Map<string, GameCreationAppTaskState>,
-  seen = new Set<string>(),
-): number {
-  if (seen.has(task.id) || task.dependencies.length === 0) {
-    return 0;
-  }
-  const nextSeen = new Set(seen).add(task.id);
-  return (
-    1 +
-    Math.max(
-      0,
-      ...task.dependencies.map((dependency) => {
-        const dependencyTask = taskById.get(dependency);
-        return dependencyTask
-          ? taskDependencyDepth(dependencyTask, taskById, nextSeen)
-          : 0;
-      }),
-    )
-  );
-}
-
 function resourcesFromProject(
   manifest: GameCreationAppManifest,
   attachments: AttachmentResult[],
@@ -333,7 +318,7 @@ function resourcesFromProject(
         externalResourceId: null,
         referenceResourceIds: [],
         dependencies: task.dependencies,
-        dependencyDepth: taskDependencyDepth(task, taskById),
+        dependencyDepth: 0,
       });
     }
   }
@@ -467,7 +452,7 @@ function summarizeAgent(
   };
 }
 
-function ResourceCard({
+const ResourceCard = memo(function ResourceCard({
   resource,
   selected,
   dragging,
@@ -486,8 +471,11 @@ function ResourceCard({
   relationState: 'upstream' | 'downstream' | 'both' | null;
   x: number;
   y: number;
-  onSelect: () => void;
-  onPointerDown: (event: ReactPointerEvent<HTMLButtonElement>) => void;
+  onSelect: (resourceId: string) => void;
+  onPointerDown: (
+    event: ReactPointerEvent<HTMLButtonElement>,
+    resource: ProjectResource,
+  ) => void;
   onPointerMove: (event: ReactPointerEvent<HTMLButtonElement>) => void;
   onPointerUp: (event: ReactPointerEvent<HTMLButtonElement>) => void;
   onPointerCancel: (event: ReactPointerEvent<HTMLButtonElement>) => void;
@@ -508,8 +496,8 @@ function ResourceCard({
           '--resource-y': `${y}px`,
         } as CSSProperties
       }
-      onClick={onSelect}
-      onPointerDown={onPointerDown}
+      onClick={() => onSelect(resource.id)}
+      onPointerDown={(event) => onPointerDown(event, resource)}
       onPointerMove={onPointerMove}
       onPointerUp={onPointerUp}
       onPointerCancel={onPointerCancel}
@@ -522,7 +510,7 @@ function ResourceCard({
       <small>{resource.path}</small>
     </button>
   );
-}
+});
 
 export default function ProjectDevelopmentView({
   projectName,
@@ -549,9 +537,6 @@ export default function ProjectDevelopmentView({
   const [draggedResourceId, setDraggedResourceId] = useState<string | null>(
     null,
   );
-  const [resourceDragPreview, setResourceDragPreview] = useState<
-    (Point & { resourceId: string }) | null
-  >(null);
   const [resourceDialogPosition, setResourceDialogPosition] =
     useState<Point | null>(null);
   const [imagePreview, setImagePreview] = useState<ImagePreviewState>({
@@ -563,6 +548,8 @@ export default function ProjectDevelopmentView({
   const dockRef = useRef<HTMLElement>(null);
   const resourceDialogRef = useRef<HTMLElement>(null);
   const resourceCardDragRef = useRef<ResourceCardDrag | null>(null);
+  const resourceDependencyOverlayRef =
+    useRef<ResourceDependencyOverlayHandle>(null);
   const pendingResourceDragPreviewRef = useRef<
     (Point & { resourceId: string }) | null
   >(null);
@@ -605,14 +592,20 @@ export default function ProjectDevelopmentView({
   );
   const [resourceGraphState, setResourceGraphState] = useState<{
     scopeKey: string;
+    status: 'idle' | 'loading' | 'ready' | 'failed';
     graph: ProjectResourceGraph;
-  }>({ scopeKey: '', graph: EMPTY_PROJECT_RESOURCE_GRAPH });
+  }>({
+    scopeKey: '',
+    status: 'idle',
+    graph: EMPTY_PROJECT_RESOURCE_GRAPH,
+  });
 
   useEffect(() => {
     let cancelled = false;
     if (sortMode !== 'dependency') {
       setResourceGraphState({
         scopeKey: '',
+        status: 'idle',
         graph: EMPTY_PROJECT_RESOURCE_GRAPH,
       });
       return () => {
@@ -623,12 +616,18 @@ export default function ProjectDevelopmentView({
     if (!invoke) {
       setResourceGraphState({
         scopeKey: resourceGraphScopeKey,
+        status: 'failed',
         graph: EMPTY_PROJECT_RESOURCE_GRAPH,
       });
       return () => {
         cancelled = true;
       };
     }
+    setResourceGraphState({
+      scopeKey: resourceGraphScopeKey,
+      status: 'loading',
+      graph: EMPTY_PROJECT_RESOURCE_GRAPH,
+    });
     void invoke<ProjectResourceGraphReadModel>(
       'read_local_project_resource_graph',
       {
@@ -641,6 +640,7 @@ export default function ProjectDevelopmentView({
         if (!cancelled) {
           setResourceGraphState({
             scopeKey: resourceGraphScopeKey,
+            status: 'ready',
             graph: normalizeProjectResourceGraph(readModel),
           });
         }
@@ -649,6 +649,7 @@ export default function ProjectDevelopmentView({
         if (!cancelled) {
           setResourceGraphState({
             scopeKey: resourceGraphScopeKey,
+            status: 'failed',
             graph: EMPTY_PROJECT_RESOURCE_GRAPH,
           });
         }
@@ -664,10 +665,19 @@ export default function ProjectDevelopmentView({
     sortMode,
   ]);
 
+  const resourceGraphScopeMatches =
+    resourceGraphState.scopeKey === resourceGraphScopeKey;
+  const resourceGraphReady =
+    resourceGraphScopeMatches && resourceGraphState.status === 'ready';
   const resourceGraph =
-    resourceGraphState.scopeKey === resourceGraphScopeKey
+    resourceGraphReady
       ? resourceGraphState.graph
       : EMPTY_PROJECT_RESOURCE_GRAPH;
+  const resourceGraphInitializationReady =
+    sortMode !== 'dependency' ||
+    (resourceGraphScopeMatches &&
+      (resourceGraphState.status === 'ready' ||
+        resourceGraphState.status === 'failed'));
   const manifestTaskById = useMemo(
     () => new Map(manifest.tasks.map((task) => [task.id, task])),
     [manifest.tasks],
@@ -681,18 +691,14 @@ export default function ProjectDevelopmentView({
         const producerTask = producerTaskId
           ? manifestTaskById.get(producerTaskId)
           : undefined;
-        return producerTask && producerTaskId !== resource.producerTaskId
-          ? {
-              ...resource,
-              taskTitle: producerTask.title,
-              producerTaskId,
-              dependencies: producerTask.dependencies,
-              dependencyDepth: taskDependencyDepth(
-                producerTask,
-                manifestTaskById,
-              ),
-            }
-          : resource;
+        return {
+          ...resource,
+          taskTitle: producerTask?.title ?? resource.taskTitle,
+          producerTaskId,
+          dependencies: producerTask?.dependencies ?? resource.dependencies,
+          dependencyDepth:
+            resourceGraph.dependencyDepthByResourceId.get(resource.id) ?? 0,
+        };
       }),
     [manifestTaskById, projectedResources, resourceGraph],
   );
@@ -706,6 +712,9 @@ export default function ProjectDevelopmentView({
     projectId: manifest.projectId,
     mode: sortMode,
     resources,
+    initializationReady: resourceGraphInitializationReady,
+    rederiveAutomaticPositions:
+      sortMode === 'dependency' && resourceGraphReady,
   });
   const resourcePositionById = useMemo(
     () =>
@@ -817,6 +826,34 @@ export default function ProjectDevelopmentView({
     approvalOptions.find((option) => option.id === approvalMode)?.label ??
     '严格审批';
 
+  const applyResourceDragPreview = useCallback(
+    (preview: Point & { resourceId: string }) => {
+      const drag = resourceCardDragRef.current;
+      if (!drag || drag.resourceId !== preview.resourceId) {
+        return;
+      }
+      drag.element.style.setProperty('--resource-x', `${preview.x}px`);
+      drag.element.style.setProperty('--resource-y', `${preview.y}px`);
+      if (drag.plane) {
+        drag.plane.style.width = `${Math.max(
+          drag.planeBaseWidth,
+          preview.x +
+            RESOURCE_CANVAS_CARD_WIDTH +
+            RESOURCE_CANVAS_COLUMN_GAP +
+            drag.visualGutter,
+        )}px`;
+        drag.plane.style.height = `${Math.max(
+          drag.planeBaseHeight,
+          preview.y +
+            RESOURCE_CANVAS_CARD_HEIGHT +
+            RESOURCE_CANVAS_ROW_GAP,
+        )}px`;
+      }
+      resourceDependencyOverlayRef.current?.updateDragPreview(preview);
+    },
+    [],
+  );
+
   const scheduleResourceDragPreview = useCallback(
     (preview: Point & { resourceId: string }) => {
       pendingResourceDragPreviewRef.current = preview;
@@ -828,11 +865,11 @@ export default function ProjectDevelopmentView({
         const pending = pendingResourceDragPreviewRef.current;
         pendingResourceDragPreviewRef.current = null;
         if (pending) {
-          setResourceDragPreview(pending);
+          applyResourceDragPreview(pending);
         }
       });
     },
-    [],
+    [applyResourceDragPreview],
   );
 
   const clearScheduledResourceDragPreview = useCallback(() => {
@@ -846,6 +883,7 @@ export default function ProjectDevelopmentView({
   useEffect(
     () => () => {
       clearScheduledResourceDragPreview();
+      resourceDependencyOverlayRef.current?.clearDragPreview();
     },
     [clearScheduledResourceDragPreview],
   );
@@ -860,8 +898,8 @@ export default function ProjectDevelopmentView({
     setSelectedResourceId(null);
     resourceCardDragRef.current = null;
     clearScheduledResourceDragPreview();
+    resourceDependencyOverlayRef.current?.clearDragPreview();
     setDraggedResourceId(null);
-    setResourceDragPreview(null);
   }, [clearScheduledResourceDragPreview, projectPath]);
 
   useEffect(() => {
@@ -987,81 +1025,135 @@ export default function ProjectDevelopmentView({
     return () => window.removeEventListener('resize', clampOnResize);
   }, [clampResourceDialogPosition, selectedResource]);
 
-  function handleResourceCardPointerDown(
-    event: ReactPointerEvent<HTMLButtonElement>,
-    resource: ProjectResource,
-  ) {
-    if (event.button !== 0) {
+  const handleResourceSelect = useCallback((resourceId: string) => {
+    if (suppressResourceClickRef.current === resourceId) {
+      suppressResourceClickRef.current = null;
       return;
     }
-    const position = resourcePositionById.get(resource.id);
-    if (!position || position.section !== resource.category) {
-      return;
-    }
-    clearScheduledResourceDragPreview();
-    resourceCardDragRef.current = {
-      pointerId: event.pointerId,
-      resourceId: resource.id,
-      section: resource.category,
-      startClientX: event.clientX,
-      startClientY: event.clientY,
-      startX: position.x,
-      startY: position.y,
-      moved: false,
-    };
-    event.currentTarget.setPointerCapture?.(event.pointerId);
-  }
+    setSelectedResourceId(resourceId);
+  }, []);
 
-  function handleResourceCardPointerMove(
-    event: ReactPointerEvent<HTMLButtonElement>,
-  ) {
-    const drag = resourceCardDragRef.current;
-    if (!drag || drag.pointerId !== event.pointerId) {
-      return;
-    }
-    const deltaX = event.clientX - drag.startClientX;
-    const deltaY = event.clientY - drag.startClientY;
-    if (
-      !drag.moved &&
-      Math.hypot(deltaX, deltaY) < RESOURCE_CANVAS_DRAG_THRESHOLD
-    ) {
-      return;
-    }
-    drag.moved = true;
-    setDraggedResourceId(drag.resourceId);
-    scheduleResourceDragPreview({
-      resourceId: drag.resourceId,
-      x: Math.max(0, drag.startX + deltaX),
-      y: Math.max(0, drag.startY + deltaY),
-    });
-    event.preventDefault();
-  }
+  const handleResourceCardPointerDown = useCallback(
+    (
+      event: ReactPointerEvent<HTMLButtonElement>,
+      resource: ProjectResource,
+    ) => {
+      if (event.button !== 0) {
+        return;
+      }
+      const position = resourcePositionById.get(resource.id);
+      if (!position || position.section !== resource.category) {
+        return;
+      }
+      clearScheduledResourceDragPreview();
+      const plane = event.currentTarget.parentElement;
+      resourceCardDragRef.current = {
+        pointerId: event.pointerId,
+        resourceId: resource.id,
+        section: resource.category,
+        startClientX: event.clientX,
+        startClientY: event.clientY,
+        startX: position.x,
+        startY: position.y,
+        moved: false,
+        element: event.currentTarget,
+        plane,
+        planeBaseWidth:
+          Number.parseFloat(plane?.style.width ?? '') ||
+          plane?.getBoundingClientRect().width ||
+          0,
+        planeBaseHeight:
+          Number.parseFloat(plane?.style.height ?? '') ||
+          plane?.getBoundingClientRect().height ||
+          0,
+        visualGutter:
+          sortMode === 'dependency' ? RESOURCE_DEPENDENCY_VISUAL_GUTTER : 0,
+      };
+      event.currentTarget.setPointerCapture?.(event.pointerId);
+    },
+    [clearScheduledResourceDragPreview, resourcePositionById, sortMode],
+  );
 
-  function handleResourceCardPointerEnd(
-    event: ReactPointerEvent<HTMLButtonElement>,
-    cancelled: boolean,
-  ) {
-    const drag = resourceCardDragRef.current;
-    if (!drag || drag.pointerId !== event.pointerId) {
-      return;
-    }
-    clearScheduledResourceDragPreview();
-    resourceCardDragRef.current = null;
-    if (event.currentTarget.hasPointerCapture?.(event.pointerId)) {
-      event.currentTarget.releasePointerCapture?.(event.pointerId);
-    }
-    if (drag.moved && !cancelled) {
-      suppressResourceClickRef.current = drag.resourceId;
-      commitResourcePosition(
-        drag.resourceId,
-        drag.section,
-        Math.max(0, drag.startX + event.clientX - drag.startClientX),
-        Math.max(0, drag.startY + event.clientY - drag.startClientY),
-      );
-    }
-    setDraggedResourceId(null);
-    setResourceDragPreview(null);
-  }
+  const handleResourceCardPointerMove = useCallback(
+    (event: ReactPointerEvent<HTMLButtonElement>) => {
+      const drag = resourceCardDragRef.current;
+      if (!drag || drag.pointerId !== event.pointerId) {
+        return;
+      }
+      const deltaX = event.clientX - drag.startClientX;
+      const deltaY = event.clientY - drag.startClientY;
+      if (
+        !drag.moved &&
+        Math.hypot(deltaX, deltaY) < RESOURCE_CANVAS_DRAG_THRESHOLD
+      ) {
+        return;
+      }
+      if (!drag.moved) {
+        drag.moved = true;
+        setDraggedResourceId(drag.resourceId);
+      }
+      scheduleResourceDragPreview({
+        resourceId: drag.resourceId,
+        x: Math.max(0, drag.startX + deltaX),
+        y: Math.max(0, drag.startY + deltaY),
+      });
+      event.preventDefault();
+    },
+    [scheduleResourceDragPreview],
+  );
+
+  const handleResourceCardPointerEnd = useCallback(
+    (event: ReactPointerEvent<HTMLButtonElement>, cancelled: boolean) => {
+      const drag = resourceCardDragRef.current;
+      if (!drag || drag.pointerId !== event.pointerId) {
+        return;
+      }
+      clearScheduledResourceDragPreview();
+      const finalPreview = {
+        resourceId: drag.resourceId,
+        x: cancelled
+          ? drag.startX
+          : Math.max(0, drag.startX + event.clientX - drag.startClientX),
+        y: cancelled
+          ? drag.startY
+          : Math.max(0, drag.startY + event.clientY - drag.startClientY),
+      };
+      applyResourceDragPreview(finalPreview);
+      resourceCardDragRef.current = null;
+      if (event.currentTarget.hasPointerCapture?.(event.pointerId)) {
+        event.currentTarget.releasePointerCapture?.(event.pointerId);
+      }
+      if (drag.moved && !cancelled) {
+        suppressResourceClickRef.current = drag.resourceId;
+        commitResourcePosition(
+          drag.resourceId,
+          drag.section,
+          finalPreview.x,
+          finalPreview.y,
+        );
+        const overlay = resourceDependencyOverlayRef.current;
+        window.requestAnimationFrame(() => overlay?.clearDragPreview());
+      } else {
+        resourceDependencyOverlayRef.current?.clearDragPreview();
+      }
+      setDraggedResourceId(null);
+    },
+    [
+      applyResourceDragPreview,
+      clearScheduledResourceDragPreview,
+      commitResourcePosition,
+    ],
+  );
+  const handleResourceCardPointerUp = useCallback(
+    (event: ReactPointerEvent<HTMLButtonElement>) =>
+      handleResourceCardPointerEnd(event, false),
+    [handleResourceCardPointerEnd],
+  );
+  const handleResourceCardPointerCancel = useCallback(
+    (event: ReactPointerEvent<HTMLButtonElement>) =>
+      handleResourceCardPointerEnd(event, true),
+    [handleResourceCardPointerEnd],
+  );
 
   function handleResourceDialogPointerDown(
     event: ReactPointerEvent<HTMLElement>,
@@ -1236,10 +1328,10 @@ export default function ProjectDevelopmentView({
                 <div className="game-resource-canvas-content">
                   {sortMode === 'dependency' ? (
                     <ResourceDependencyOverlay
+                      ref={resourceDependencyOverlayRef}
                       key={`${projectPath}:${manifest.projectId}`}
                       graph={resourceGraph}
                       positions={resourceLayout.positions}
-                      dragPreview={resourceDragPreview}
                       visibleResourceIds={visibleResourceIds}
                       selectedResourceId={selectedResourceId}
                     />
@@ -1250,36 +1342,13 @@ export default function ProjectDevelopmentView({
                     const baseExtent = resourceBaseExtentByCategory.get(
                       category,
                     ) ?? { width: 0, height: 0 };
-                    const dragPosition = resourceDragPreview
-                      ? resourcePositionById.get(
-                          resourceDragPreview.resourceId,
-                        )
-                      : undefined;
-                    const previewInCategory =
-                      dragPosition?.section === category
-                        ? resourceDragPreview
-                        : null;
                     const extent = {
                       width:
-                        Math.max(
-                          baseExtent.width,
-                          previewInCategory
-                            ? previewInCategory.x +
-                                RESOURCE_CANVAS_CARD_WIDTH +
-                                RESOURCE_CANVAS_COLUMN_GAP
-                            : 0,
-                        ) +
+                        baseExtent.width +
                         (sortMode === 'dependency'
                           ? RESOURCE_DEPENDENCY_VISUAL_GUTTER
                           : 0),
-                      height: Math.max(
-                        baseExtent.height,
-                        previewInCategory
-                          ? previewInCategory.y +
-                            RESOURCE_CANVAS_CARD_HEIGHT +
-                            RESOURCE_CANVAS_ROW_GAP
-                          : 0,
-                      ),
+                      height: baseExtent.height,
                     };
                     const Icon = categoryIcons[category];
                     return (
@@ -1311,10 +1380,6 @@ export default function ProjectDevelopmentView({
                               if (!position) {
                                 return null;
                               }
-                              const preview =
-                                resourceDragPreview?.resourceId === resource.id
-                                  ? resourceDragPreview
-                                  : null;
                               const upstream =
                                 sortMode === 'dependency' &&
                                 selectedResourceNeighbors.upstreamResourceIds.has(
@@ -1340,30 +1405,14 @@ export default function ProjectDevelopmentView({
                                   selected={resource.id === selectedResourceId}
                                   dragging={resource.id === draggedResourceId}
                                   relationState={relationState}
-                                  x={preview?.x ?? position.x}
-                                  y={preview?.y ?? position.y}
-                                  onSelect={() => {
-                                    if (
-                                      suppressResourceClickRef.current ===
-                                      resource.id
-                                    ) {
-                                      suppressResourceClickRef.current = null;
-                                      return;
-                                    }
-                                    setSelectedResourceId(resource.id);
-                                  }}
-                                  onPointerDown={(event) =>
-                                    handleResourceCardPointerDown(
-                                      event,
-                                      resource,
-                                    )
-                                  }
+                                  x={position.x}
+                                  y={position.y}
+                                  onSelect={handleResourceSelect}
+                                  onPointerDown={handleResourceCardPointerDown}
                                   onPointerMove={handleResourceCardPointerMove}
-                                  onPointerUp={(event) =>
-                                    handleResourceCardPointerEnd(event, false)
-                                  }
-                                  onPointerCancel={(event) =>
-                                    handleResourceCardPointerEnd(event, true)
+                                  onPointerUp={handleResourceCardPointerUp}
+                                  onPointerCancel={
+                                    handleResourceCardPointerCancel
                                   }
                                 />
                               );
diff --git a/apps/ai-game-creator-shell/src/view/project-development/resourceDependencyGraphModel.ts b/apps/ai-game-creator-shell/src/view/project-development/resourceDependencyGraphModel.ts
index ff46e11c5..57d56662f 100644
--- a/apps/ai-game-creator-shell/src/view/project-development/resourceDependencyGraphModel.ts
+++ b/apps/ai-game-creator-shell/src/view/project-development/resourceDependencyGraphModel.ts
@@ -33,6 +33,7 @@ export type ProjectResourceConnectionIndexDto = {
 export type ProjectResourceProducerAssignment = {
   resourceId: string;
   taskId: string;
+  dependencyDepth: number;
 };
 
 export type ProjectResourceGraphReadModel = {
@@ -62,6 +63,7 @@ export type ProjectResourceGraph = {
   taskFlowById: ReadonlyMap<string, ProjectResourceTaskFlow>;
   connectionIndex: ReadonlyMap<string, ProjectResourceConnectionIndex>;
   producerTaskIdByResourceId: ReadonlyMap<string, string>;
+  dependencyDepthByResourceId: ReadonlyMap<string, number>;
   unresolvedReferenceResourceIds: string[];
   cyclicResourceIds: ReadonlySet<string>;
   cyclicTaskIds: ReadonlySet<string>;
@@ -76,6 +78,7 @@ export type ProjectResourceGraphNeighbors = {
 
 const emptyStringSet: ReadonlySet<string> = new Set<string>();
 const emptyStringMap: ReadonlyMap<string, string> = new Map<string, string>();
+const emptyNumberMap: ReadonlyMap<string, number> = new Map<string, number>();
 const emptyConnectionMap: ReadonlyMap<string, ProjectResourceConnectionIndex> =
   new Map<string, ProjectResourceConnectionIndex>();
 const emptyTaskFlowMap: ReadonlyMap<string, ProjectResourceTaskFlow> = new Map<
@@ -102,6 +105,7 @@ export const EMPTY_PROJECT_RESOURCE_GRAPH: ProjectResourceGraph = {
   taskFlowById: emptyTaskFlowMap,
   connectionIndex: emptyConnectionMap,
   producerTaskIdByResourceId: emptyStringMap,
+  dependencyDepthByResourceId: emptyNumberMap,
   unresolvedReferenceResourceIds: [],
   cyclicResourceIds: emptyStringSet,
   cyclicTaskIds: emptyStringSet,
@@ -174,13 +178,23 @@ export function normalizeProjectResourceGraph(
       ),
     });
   }
-  const producerTaskIdByResourceId = new Map(
-    readModel.producerAssignments.flatMap((assignment) =>
-      resourceIds.has(assignment.resourceId) && assignment.taskId
-        ? [[assignment.resourceId, assignment.taskId] as const]
-        : [],
-    ),
-  );
+  const producerTaskIdByResourceId = new Map<string, string>();
+  const dependencyDepthByResourceId = new Map<string, number>();
+  for (const assignment of readModel.producerAssignments) {
+    if (!resourceIds.has(assignment.resourceId) || !assignment.taskId) {
+      continue;
+    }
+    producerTaskIdByResourceId.set(assignment.resourceId, assignment.taskId);
+    if (
+      Number.isSafeInteger(assignment.dependencyDepth) &&
+      assignment.dependencyDepth >= 0
+    ) {
+      dependencyDepthByResourceId.set(
+        assignment.resourceId,
+        assignment.dependencyDepth,
+      );
+    }
+  }
 
   return {
     resourceIds,
@@ -190,6 +204,7 @@ export function normalizeProjectResourceGraph(
     taskFlowById: new Map(taskFlows.map((flow) => [flow.id, flow])),
     connectionIndex,
     producerTaskIdByResourceId,
+    dependencyDepthByResourceId,
     unresolvedReferenceResourceIds: uniqueSorted(
       readModel.unresolvedReferenceResourceIds,
     ),
diff --git a/apps/ai-game-creator-shell/src/view/project-development/useProjectResourceCanvasLayout.ts b/apps/ai-game-creator-shell/src/view/project-development/useProjectResourceCanvasLayout.ts
index 745ca2c37..746ee88b8 100644
--- a/apps/ai-game-creator-shell/src/view/project-development/useProjectResourceCanvasLayout.ts
+++ b/apps/ai-game-creator-shell/src/view/project-development/useProjectResourceCanvasLayout.ts
@@ -81,16 +81,58 @@ function layoutMatchesScope(
   return layout.projectId === scope.projectId && layout.mode === scope.mode;
 }
 
+function positionsEqual(
+  left: ProjectResourceCanvasLayout['positions'],
+  right: ProjectResourceCanvasLayout['positions'],
+) {
+  return (
+    left.length === right.length &&
+    left.every((position, index) => {
+      const other = right[index];
+      return (
+        other?.resourceId === position.resourceId &&
+        other.section === position.section &&
+        other.x === position.x &&
+        other.y === position.y &&
+        other.manuallyPlaced === position.manuallyPlaced
+      );
+    })
+  );
+}
+
+function reconcileLayout(
+  source: ProjectResourceCanvasLayout,
+  resources: ResourceCanvasItem[],
+  rederiveAutomaticPositions: boolean,
+) {
+  if (!rederiveAutomaticPositions) {
+    return reconcileResourceCanvasLayout(source, resources);
+  }
+  const manualSource = {
+    ...source,
+    positions: source.positions.filter((position) => position.manuallyPlaced),
+  };
+  const reconciled = reconcileResourceCanvasLayout(manualSource, resources);
+  return {
+    layout: reconciled.layout,
+    changed: !positionsEqual(source.positions, reconciled.layout.positions),
+  };
+}
+
 export function useProjectResourceCanvasLayout({
   projectPath,
   projectId,
   mode,
   resources,
+  initializationReady = true,
+  rederiveAutomaticPositions = false,
 }: {
   projectPath: string;
   projectId: string;
   mode: ProjectResourceCanvasLayoutMode;
   resources: ResourceCanvasItem[];
+  initializationReady?: boolean;
+  rederiveAutomaticPositions?: boolean;
 }) {
   const scopeKey = createScopeKey(projectPath, projectId, mode);
   const resourceSignature = useMemo(
@@ -98,13 +140,18 @@ export function useProjectResourceCanvasLayout({
     [resources],
   );
   const fallback = useMemo(
-    () =>
-      reconcileResourceCanvasLayout(
-        createEmptyResourceCanvasLayout(projectId, mode),
-        resources,
-      ).layout,
-    [mode, projectId, resources],
-  );
+    () => {
+      const empty = createEmptyResourceCanvasLayout(projectId, mode);
+      return initializationReady
+        ? reconcileLayout(empty, resources, rederiveAutomaticPositions).layout
+        : empty;
+    }, [
+      initializationReady,
+      mode,
+      projectId,
+      rederiveAutomaticPositions,
+      resources,
+    ]);
   const [layout, setLayout] = useState<ProjectResourceCanvasLayout>(fallback);
   const [notice, setNotice] = useState<LayoutNotice>('');
   const [saving, setSaving] = useState(false);
@@ -151,9 +198,10 @@ export function useProjectResourceCanvasLayout({
       if (scope.epoch !== scopeEpoch) {
         return;
       }
-      let next = reconcileResourceCanvasLayout(
+      let next = reconcileLayout(
         persistedLayoutRef.current,
         resourcesRef.current,
+        rederiveAutomaticPositions,
       ).layout;
       for (const intent of writeQueueRef.current) {
         if (intent.scopeEpoch === scopeEpoch && intent.kind === 'manual') {
@@ -168,7 +216,7 @@ export function useProjectResourceCanvasLayout({
       }
       applyLayout(next);
     },
-    [applyLayout],
+    [applyLayout, rederiveAutomaticPositions],
   );
 
   enqueueResourceSyncRef.current = (scopeEpoch, conflictRetries = 0) => {
@@ -229,9 +277,10 @@ export function useProjectResourceCanvasLayout({
       return;
     }
 
-    const reconciled = reconcileResourceCanvasLayout(
+    const reconciled = reconcileLayout(
       persistedLayoutRef.current,
       resourcesRef.current,
+      rederiveAutomaticPositions,
     );
     if (intent.kind === 'resources' && !reconciled.changed) {
       removeWriteIntent(intent);
@@ -330,7 +379,11 @@ export function useProjectResourceCanvasLayout({
             setNotice('布局已保存');
           }
           if (
-            reconcileResourceCanvasLayout(result.layout, resourcesRef.current)
+            reconcileLayout(
+              result.layout,
+              resourcesRef.current,
+              rederiveAutomaticPositions,
+            )
               .changed
           ) {
             enqueueResourceSyncRef.current(currentScope.epoch);
@@ -346,9 +399,10 @@ export function useProjectResourceCanvasLayout({
               queued.scopeEpoch !== currentScope.epoch ||
               queued.kind !== 'manual',
           );
-          const needsResourceSync = reconcileResourceCanvasLayout(
+          const needsResourceSync = reconcileLayout(
             result.layout,
             resourcesRef.current,
+            rederiveAutomaticPositions,
           ).changed;
           const nextRetry =
             intent.kind === 'resources' ? intent.conflictRetries + 1 : 0;
@@ -435,9 +489,18 @@ export function useProjectResourceCanvasLayout({
     writeQueueRef.current = [];
     activeWriteIntentRef.current = null;
     redragRequiredScopeEpochRef.current = null;
-    const initialFallback = reconcileResourceCanvasLayout(
-      createEmptyResourceCanvasLayout(projectId, mode),
+    const emptyLayout = createEmptyResourceCanvasLayout(projectId, mode);
+    if (!initializationReady) {
+      persistedLayoutRef.current = emptyLayout;
+      applyLayout(emptyLayout);
+      setNotice('');
+      setSaving(false);
+      return undefined;
+    }
+    const initialFallback = reconcileLayout(
+      emptyLayout,
       resourcesRef.current,
+      rederiveAutomaticPositions,
     ).layout;
     persistedLayoutRef.current = initialFallback;
     applyLayout(initialFallback);
@@ -469,7 +532,11 @@ export function useProjectResourceCanvasLayout({
         persistedLayoutRef.current = loaded;
         initializedScopeEpochRef.current = epoch;
         if (
-          reconcileResourceCanvasLayout(loaded, resourcesRef.current).changed
+          reconcileLayout(
+            loaded,
+            resourcesRef.current,
+            rederiveAutomaticPositions,
+          ).changed
         ) {
           enqueueResourceSyncRef.current(epoch);
         }
@@ -491,10 +558,12 @@ export function useProjectResourceCanvasLayout({
     };
   }, [
     applyLayout,
+    initializationReady,
     mode,
     projectId,
     projectPath,
     rebuildOptimisticLayout,
+    rederiveAutomaticPositions,
     scopeKey,
   ]);
 
@@ -502,25 +571,34 @@ export function useProjectResourceCanvasLayout({
     const scope = scopeRef.current;
     if (
       scope.key !== scopeKey ||
+      !initializationReady ||
       initializedScopeEpochRef.current !== scope.epoch
     ) {
       return;
     }
-    const reconciledCurrent = reconcileResourceCanvasLayout(
+    const reconciledCurrent = reconcileLayout(
       layoutRef.current,
       resourcesRef.current,
+      rederiveAutomaticPositions,
     );
     applyLayout(reconciledCurrent.layout);
     if (
       window.__TAURI__?.core?.invoke &&
-      reconcileResourceCanvasLayout(
+      reconcileLayout(
         persistedLayoutRef.current,
         resourcesRef.current,
+        rederiveAutomaticPositions,
       ).changed
     ) {
       enqueueResourceSyncRef.current(scope.epoch);
     }
-  }, [applyLayout, resourceSignature, scopeKey]);
+  }, [
+    applyLayout,
+    initializationReady,
+    rederiveAutomaticPositions,
+    resourceSignature,
+    scopeKey,
+  ]);
 
   useEffect(() => {
     if (!notice) {
@@ -544,7 +622,11 @@ export function useProjectResourceCanvasLayout({
       y: number,
     ) => {
       const scope = scopeRef.current;
-      if (scope.key !== scopeKey) {
+      if (
+        scope.key !== scopeKey ||
+        !initializationReady ||
+        initializedScopeEpochRef.current !== scope.epoch
+      ) {
         return;
       }
       const queuedIntent = writeQueueRef.current.find(
@@ -580,10 +662,11 @@ export function useProjectResourceCanvasLayout({
       setSaving(true);
       pumpWritesRef.current();
     },
-    [applyLayout, scopeKey],
+    [applyLayout, initializationReady, scopeKey],
   );
 
   const scopeMatches =
+    initializationReady &&
     scopeRef.current.key === scopeKey &&
     layout.projectId === projectId &&
     layout.mode === mode;
diff --git a/apps/ai-game-creator-shell/tests/ResourceDependencyOverlay.test.ts b/apps/ai-game-creator-shell/tests/ResourceDependencyOverlay.test.ts
index da4df334a..6348de9bf 100644
--- a/apps/ai-game-creator-shell/tests/ResourceDependencyOverlay.test.ts
+++ b/apps/ai-game-creator-shell/tests/ResourceDependencyOverlay.test.ts
@@ -1,5 +1,5 @@
 /** @vitest-environment jsdom */
-import { render, screen, waitFor } from '@testing-library/react';
+import { act, render, screen, waitFor } from '@testing-library/react';
 import React from 'react';
 import { describe, expect, it, vi } from 'vitest';
 
@@ -9,7 +9,10 @@ import {
   type ProjectResourceGraph,
   type ProjectResourceGraphReadModel,
 } from '../src/view/project-development/resourceDependencyGraphModel';
-import { ResourceDependencyOverlay } from '../src/view/project-development/ResourceDependencyOverlay';
+import {
+  ResourceDependencyOverlay,
+  type ResourceDependencyOverlayHandle,
+} from '../src/view/project-development/ResourceDependencyOverlay';
 
 function position(
   resourceId: string,
@@ -103,22 +106,22 @@ function OverlayHarness({
   positions,
   visibleResourceIds,
   selectedResourceId = null,
-  dragPreview = null,
+  overlayRef,
 }: {
   graph: ProjectResourceGraph;
   positions: ProjectResourceCanvasPosition[];
   visibleResourceIds: ReadonlySet<string>;
   selectedResourceId?: string | null;
-  dragPreview?: { resourceId: string; x: number; y: number } | null;
+  overlayRef?: React.Ref<ResourceDependencyOverlayHandle>;
 }) {
   return React.createElement(
     'div',
     null,
     React.createElement('div', { 'data-resource-section-plane': 'art' }),
     React.createElement(ResourceDependencyOverlay, {
+      ref: overlayRef,
       graph,
       positions,
-      dragPreview,
       visibleResourceIds,
       selectedResourceId,
     }),
@@ -130,14 +133,14 @@ function overlayView(
   positions: ProjectResourceCanvasPosition[],
   visibleResourceIds: ReadonlySet<string>,
   selectedResourceId: string | null = null,
-  dragPreview: { resourceId: string; x: number; y: number } | null = null,
+  overlayRef?: React.Ref<ResourceDependencyOverlayHandle>,
 ) {
   return React.createElement(OverlayHarness, {
     graph,
     positions,
     visibleResourceIds,
     selectedResourceId,
-    dragPreview,
+    overlayRef,
   });
 }
 
@@ -181,8 +184,15 @@ describe('ResourceDependencyOverlay', () => {
       position('source:one', 0, 0),
       position('target:one', 240, 0),
     ];
+    const overlayRef = React.createRef<ResourceDependencyOverlayHandle>();
     const view = render(
-      overlayView(graph, positions, new Set(['source:one', 'target:one'])),
+      overlayView(
+        graph,
+        positions,
+        new Set(['source:one', 'target:one']),
+        null,
+        overlayRef,
+      ),
     );
     const overlay = await screen.findByTestId('resource-dependency-overlay');
     const firstPath = await waitFor(() => {
@@ -193,14 +203,12 @@ describe('ResourceDependencyOverlay', () => {
       return path?.getAttribute('d');
     });
 
-    view.rerender(
-      overlayView(
-        graph,
-        positions,
-        new Set(['source:one', 'target:one']),
-        null,
-        { resourceId: 'source:one', x: 80, y: 40 },
-      ),
+    act(() =>
+      overlayRef.current?.updateDragPreview({
+        resourceId: 'source:one',
+        x: 80,
+        y: 40,
+      }),
     );
     await waitFor(() =>
       expect(
@@ -242,7 +250,8 @@ describe('ResourceDependencyOverlay', () => {
         position('target:one', 240, 0),
       ];
       const visible = new Set(['source:one', 'target:one']);
-      const view = render(overlayView(graph, positions, visible));
+      const overlayRef = React.createRef<ResourceDependencyOverlayHandle>();
+      render(overlayView(graph, positions, visible, null, overlayRef));
       const overlay = await screen.findByTestId('resource-dependency-overlay');
       const selector = '[data-edge-kind="asset-reference"]';
       await waitFor(() =>
@@ -251,8 +260,8 @@ describe('ResourceDependencyOverlay', () => {
         ),
       );
 
-      view.rerender(
-        overlayView(graph, positions, visible, null, {
+      act(() =>
+        overlayRef.current?.updateDragPreview({
           resourceId: 'source:one',
           x: 80,
           y: 40,
@@ -375,7 +384,8 @@ describe('ResourceDependencyOverlay', () => {
       position('resource:2049', 440, 0),
     ];
     const visible = new Set(positions.map(({ resourceId }) => resourceId));
-    const view = render(overlayView(graph, positions, visible));
+    const overlayRef = React.createRef<ResourceDependencyOverlayHandle>();
+    render(overlayView(graph, positions, visible, null, overlayRef));
     const overlay = await screen.findByTestId('resource-dependency-overlay');
     await waitFor(() =>
       expect(
@@ -387,8 +397,8 @@ describe('ResourceDependencyOverlay', () => {
       'setAttribute',
     );
     try {
-      view.rerender(
-        overlayView(graph, positions, visible, null, {
+      act(() =>
+        overlayRef.current?.updateDragPreview({
           resourceId: 'resource:2048',
           x: 260,
           y: 32,
@@ -419,23 +429,24 @@ describe('ResourceDependencyOverlay', () => {
       const positions = Array.from(graph.resourceIds).map(
         (resourceId, index) => position(resourceId, index * 200, 0),
       );
+      const overlayRef = React.createRef<ResourceDependencyOverlayHandle>();
       const view = render(
         overlayView(
           graph,
           positions,
           new Set(graph.resourceIds),
+          null,
+          overlayRef,
         ),
       );
 
       expect(observe).toHaveBeenCalledTimes(2);
-      view.rerender(
-        overlayView(
-          graph,
-          positions,
-          new Set(graph.resourceIds),
-          null,
-          { resourceId: 'source:one', x: 32, y: 24 },
-        ),
+      act(() =>
+        overlayRef.current?.updateDragPreview({
+          resourceId: 'source:one',
+          x: 32,
+          y: 24,
+        }),
       );
       expect(observe).toHaveBeenCalledTimes(2);
       view.unmount();
diff --git a/apps/ai-game-creator-shell/tests/appSurface/home.suite.ts b/apps/ai-game-creator-shell/tests/appSurface/home.suite.ts
index 733c41033..96bee78ed 100644
--- a/apps/ai-game-creator-shell/tests/appSurface/home.suite.ts
+++ b/apps/ai-game-creator-shell/tests/appSurface/home.suite.ts
@@ -801,7 +801,9 @@ export function registerHomeProjectCreationTests() {
     expect(screen.getByLabelText('项目总控消息').textContent).toContain(
       '第一行\n第二行\n第三行',
     );
-    expect(screen.getByText('assets/uploads/reference.png')).not.toBeNull();
+    expect(
+      await screen.findByText('assets/uploads/reference.png'),
+    ).not.toBeNull();
     expect(invoke).toHaveBeenCalledWith('init_local_game_project', {
       projectPath: '/tmp/home-created-game',
       projectId: 'local-project-draft',
diff --git a/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts b/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts
index 7d70a4a2d..5997a0fab 100644
--- a/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts
+++ b/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts
@@ -56,6 +56,40 @@ import {
   within,
 } from './harness';
 
+function resourceGraphForInputs(args?: Record<string, unknown>) {
+  const resources =
+    (args?.resources as
+      | Array<{ resourceId: string; producerTaskId: string | null }>
+      | undefined) ?? [];
+  return {
+    resourceIds: resources.map(({ resourceId }) => resourceId),
+    referenceEdges: [],
+    taskFlows: [],
+    connectionIndex: resources.map(({ resourceId }) => ({
+      resourceId,
+      upstreamReferenceResourceIds: [],
+      downstreamReferenceResourceIds: [],
+      referenceEdgeIds: [],
+      taskFlowIds: [],
+    })),
+    producerAssignments: resources.flatMap((resource) =>
+      resource.producerTaskId
+        ? [
+            {
+              resourceId: resource.resourceId,
+              taskId: resource.producerTaskId,
+              dependencyDepth: 0,
+            },
+          ]
+        : [],
+    ),
+    unresolvedReferenceResourceIds: [],
+    cyclicResourceIds: [],
+    cyclicTaskIds: [],
+    producerMappingTruncated: false,
+  };
+}
+
 function gameChatRuntimeEvent({
   agentId = 'project-supervisor',
   taskId = agentId,
@@ -869,10 +903,12 @@ export function registerProjectWorkbenchFoundationTests() {
               {
                 resourceId: 'asset:dependency-spec',
                 taskId: 'art-director',
+                dependencyDepth: 0,
               },
               {
                 resourceId: 'asset:dependency-ui',
                 taskId: 'design-foundation',
+                dependencyDepth: 1,
               },
             ],
             unresolvedReferenceResourceIds: [],
@@ -1025,6 +1061,204 @@ export function registerProjectWorkbenchFoundationTests() {
     expect(nextOverlay.querySelector('[data-edge-kind]')).toBeNull();
   });
 
+  it('waits for the scoped resource graph before initializing dependency layout', async () => {
+    const projectId = 'workbench-delayed-resource-graph';
+    const projectPath = '/tmp/workbench-delayed-resource-graph';
+    const manifest = createGameCreationAppManifest(projectId, '延迟依赖图测试');
+    const agentResults = [
+      {
+        agentId: 'design-foundation',
+        runId: 'delayed-graph-run',
+        label: '玩法策划 Agent',
+        title: '延迟依赖图回执',
+        content: '图就绪后再初始化布局',
+        updatedAt: 1,
+      },
+    ];
+    let resolveGraph: (() => void) | null = null;
+    let layoutReads = 0;
+    let layoutRevision = 0;
+    const invoke = vi.fn(
+      async (command: string, args?: Record<string, unknown>) => {
+        if (command === 'read_local_project_resource_graph') {
+          return await new Promise((resolve) => {
+            resolveGraph = () => resolve(resourceGraphForInputs(args));
+          });
+        }
+        if (command === 'read_local_project_resource_canvas_layout') {
+          layoutReads += 1;
+          return {
+            schemaVersion: 'game-creator-resource-layout.v1',
+            projectId,
+            mode: 'dependency',
+            revision: layoutRevision,
+            positions: [],
+            updatedAt: 0,
+          };
+        }
+        if (command === 'update_local_project_resource_canvas_layout') {
+          layoutRevision += 1;
+          return {
+            status: 'updated',
+            layout: {
+              schemaVersion: 'game-creator-resource-layout.v1',
+              projectId,
+              mode: 'dependency',
+              revision: layoutRevision,
+              positions: args?.positions,
+              updatedAt: layoutRevision,
+            },
+          };
+        }
+        throw new Error(`unexpected invoke ${command}`);
+      },
+    );
+    window.__TAURI__ = { core: { invoke } };
+
+    render(
+      React.createElement(ProjectDevelopmentView, {
+        projectName: '延迟依赖图测试',
+        projectPath,
+        manifest,
+        attachments: [],
+        agentResults,
+        supervisor: React.createElement('div', null, '项目总控'),
+      }),
+    );
+
+    await waitFor(() => expect(resolveGraph).not.toBeNull());
+    expect(layoutReads).toBe(0);
+    expect(screen.queryByText('延迟依赖图回执')).toBeNull();
+
+    await act(async () => {
+      resolveGraph?.();
+      await Promise.resolve();
+    });
+    expect(await screen.findByText('延迟依赖图回执')).not.toBeNull();
+    expect(layoutReads).toBe(1);
+  });
+
+  it(
+    'keeps 4096 real resource cards out of React commits during preview frames',
+    async () => {
+      const projectId = 'workbench-resource-drag-performance';
+      const projectPath = '/tmp/workbench-resource-drag-performance';
+      const manifest = createGameCreationAppManifest(
+        projectId,
+        '资源拖动性能测试',
+      );
+      const agentResults = Array.from({ length: 4096 }, (_, index) => ({
+        agentId: 'design-foundation',
+        runId: `performance-run-${index}`,
+        label: `性能 Agent ${index}`,
+        title: `性能资源 ${index}`,
+        content: `性能正文 ${index}`,
+        updatedAt: index,
+      }));
+      let layoutRevision = 0;
+      const invoke = vi.fn(
+        async (command: string, args?: Record<string, unknown>) => {
+          if (command === 'read_local_project_resource_graph') {
+            return resourceGraphForInputs(args);
+          }
+          if (command === 'read_local_project_resource_canvas_layout') {
+            return {
+              schemaVersion: 'game-creator-resource-layout.v1',
+              projectId,
+              mode: 'dependency',
+              revision: layoutRevision,
+              positions: [],
+              updatedAt: 0,
+            };
+          }
+          if (command === 'update_local_project_resource_canvas_layout') {
+            layoutRevision += 1;
+            return {
+              status: 'updated',
+              layout: {
+                schemaVersion: 'game-creator-resource-layout.v1',
+                projectId,
+                mode: 'dependency',
+                revision: layoutRevision,
+                positions: args?.positions,
+                updatedAt: layoutRevision,
+              },
+            };
+          }
+          throw new Error(`unexpected invoke ${command}`);
+        },
+      );
+      window.__TAURI__ = { core: { invoke } };
+      const commits: string[] = [];
+
+      render(
+        React.createElement(
+          React.Profiler,
+          {
+            id: 'resource-workbench',
+            onRender: () => commits.push('commit'),
+          },
+          React.createElement(ProjectDevelopmentView, {
+            projectName: '资源拖动性能测试',
+            projectPath,
+            manifest,
+            attachments: [],
+            agentResults,
+            supervisor: React.createElement('div', null, '项目总控'),
+          }),
+        ),
+      );
+
+      const target = (await screen.findByText('性能资源 2048')).closest(
+        'button',
+      );
+      expect(target).not.toBeNull();
+      expect(document.querySelectorAll('.game-resource-card')).toHaveLength(
+        4096,
+      );
+      commits.length = 0;
+      let previewFrame: FrameRequestCallback | null = null;
+      const requestAnimationFrame = vi
+        .spyOn(window, 'requestAnimationFrame')
+        .mockImplementation((callback) => {
+          previewFrame = callback;
+          return 77;
+        });
+      const cancelAnimationFrame = vi
+        .spyOn(window, 'cancelAnimationFrame')
+        .mockImplementation(() => undefined);
+      try {
+        fireEvent.pointerDown(target!, {
+          pointerId: 88,
+          button: 0,
+          clientX: 20,
+          clientY: 30,
+        });
+        for (let index = 0; index < 100; index += 1) {
+          fireEvent.pointerMove(target!, {
+            pointerId: 88,
+            clientX: 40 + index,
+            clientY: 60 + index,
+          });
+        }
+        act(() => previewFrame?.(16));
+
+        expect(commits).toHaveLength(1);
+        expect(target?.getAttribute('style')).toContain('--resource-x: 119px');
+        expect(requestAnimationFrame).toHaveBeenCalledTimes(1);
+      } finally {
+        fireEvent.pointerCancel(target!, {
+          pointerId: 88,
+          clientX: 139,
+          clientY: 159,
+        });
+        requestAnimationFrame.mockRestore();
+        cancelAnimationFrame.mockRestore();
+      }
+    },
+    15_000,
+  );
+
   it('persists a resource position with CAS and restores it after remount', async () => {
     const projectId = 'workbench-layout-persistence';
     const projectPath = '/tmp/workbench-layout-persistence';
@@ -1058,6 +1292,9 @@ export function registerProjectWorkbenchFoundationTests() {
     };
     const invoke = vi.fn(
       async (command: string, args?: Record<string, unknown>) => {
+        if (command === 'read_local_project_resource_graph') {
+          return resourceGraphForInputs(args);
+        }
         if (command === 'read_local_project_resource_canvas_layout') {
           return structuredClone(persistedLayout);
         }
@@ -1097,7 +1334,7 @@ export function registerProjectWorkbenchFoundationTests() {
     }
 
     renderWorkbench();
-    const card = screen.getByText('布局持久化回执').closest('button');
+    const card = (await screen.findByText('布局持久化回执')).closest('button');
     expect(card).not.toBeNull();
     await waitFor(() => {
       expect(card?.getAttribute('style')).toContain('--resource-x: 12px');
@@ -1142,7 +1379,9 @@ export function registerProjectWorkbenchFoundationTests() {
 
     cleanup();
     renderWorkbench();
-    const restoredCard = screen.getByText('布局持久化回执').closest('button');
+    const restoredCard = (
+      await screen.findByText('布局持久化回执')
+    ).closest('button');
     await waitFor(() => {
       expect(restoredCard?.getAttribute('style')).toContain(
         '--resource-x: 92px',
@@ -1174,7 +1413,11 @@ export function registerProjectWorkbenchFoundationTests() {
       ],
       updatedAt: 400,
     };
-    const invoke = vi.fn(async (command: string) => {
+    const invoke = vi.fn(
+      async (command: string, args?: Record<string, unknown>) => {
+      if (command === 'read_local_project_resource_graph') {
+        return resourceGraphForInputs(args);
+      }
       if (command === 'read_local_project_resource_canvas_layout') {
         return {
           ...structuredClone(latestLayout),
@@ -1192,7 +1435,8 @@ export function registerProjectWorkbenchFoundationTests() {
         return { status: 'conflict', layout: structuredClone(latestLayout) };
       }
       throw new Error(`unexpected invoke ${command}`);
-    });
+      },
+    );
     window.__TAURI__ = { core: { invoke } };
 
     render(
@@ -1214,7 +1458,7 @@ export function registerProjectWorkbenchFoundationTests() {
         supervisor: React.createElement('div', null, '项目总控'),
       }),
     );
-    const card = screen.getByText('布局冲突回执').closest('button');
+    const card = (await screen.findByText('布局冲突回执')).closest('button');
     await waitFor(() => {
       expect(card?.getAttribute('style')).toContain('--resource-x: 20px');
     });
@@ -1280,7 +1524,11 @@ export function registerProjectWorkbenchFoundationTests() {
         }) => void)
       | null = null;
     let updateCalls = 0;
-    const invoke = vi.fn(async (command: string) => {
+    const invoke = vi.fn(
+      async (command: string, args?: Record<string, unknown>) => {
+      if (command === 'read_local_project_resource_graph') {
+        return resourceGraphForInputs(args);
+      }
       if (command === 'read_local_project_resource_canvas_layout') {
         return {
           ...structuredClone(latestLayout),
@@ -1295,7 +1543,8 @@ export function registerProjectWorkbenchFoundationTests() {
         });
       }
       throw new Error(`unexpected invoke ${command}`);
-    });
+      },
+    );
     window.__TAURI__ = { core: { invoke } };
 
     render(
@@ -1317,7 +1566,7 @@ export function registerProjectWorkbenchFoundationTests() {
         supervisor: React.createElement('div', null, '项目总控'),
       }),
     );
-    const card = screen.getByText('排队冲突回执').closest('button');
+    const card = (await screen.findByText('排队冲突回执')).closest('button');
     await waitFor(() => {
       expect(card?.getAttribute('style')).toContain('--resource-x: 20px');
     });
@@ -1391,6 +1640,9 @@ export function registerProjectWorkbenchFoundationTests() {
     }> = [];
     const invoke = vi.fn(
       async (command: string, args?: Record<string, unknown>) => {
+        if (command === 'read_local_project_resource_graph') {
+          return resourceGraphForInputs(args);
+        }
         const mode = args?.mode as 'dependency' | 'type';
         if (command === 'read_local_project_resource_canvas_layout') {
           return {
@@ -1464,7 +1716,11 @@ export function registerProjectWorkbenchFoundationTests() {
   it('keeps newly reconciled resources visible when their automatic layout save fails', async () => {
     const projectId = 'workbench-layout-save-failure';
     const manifest = createGameCreationAppManifest(projectId, '布局失败测试');
-    const invoke = vi.fn(async (command: string) => {
+    const invoke = vi.fn(
+      async (command: string, args?: Record<string, unknown>) => {
+      if (command === 'read_local_project_resource_graph') {
+        return resourceGraphForInputs(args);
+      }
       if (command === 'read_local_project_resource_canvas_layout') {
         return {
           schemaVersion: 'game-creator-resource-layout.v1',
@@ -1479,7 +1735,8 @@ export function registerProjectWorkbenchFoundationTests() {
         throw new Error('disk full');
       }
       throw new Error(`unexpected invoke ${command}`);
-    });
+      },
+    );
     window.__TAURI__ = { core: { invoke } };
 
     render(
diff --git a/apps/ai-game-creator-shell/tests/resourceDependencyGraphModel.test.ts b/apps/ai-game-creator-shell/tests/resourceDependencyGraphModel.test.ts
index 0566384ae..0ed293914 100644
--- a/apps/ai-game-creator-shell/tests/resourceDependencyGraphModel.test.ts
+++ b/apps/ai-game-creator-shell/tests/resourceDependencyGraphModel.test.ts
@@ -132,9 +132,21 @@ describe('resource dependency graph model', () => {
       readModel({
         resourceIds: ['asset:spec', 'asset:ui'],
         producerAssignments: [
-          { resourceId: 'asset:spec', taskId: 'art-director' },
-          { resourceId: 'asset:ui', taskId: 'design-foundation' },
-          { resourceId: 'asset:deleted', taskId: 'task-1' },
+          {
+            resourceId: 'asset:spec',
+            taskId: 'art-director',
+            dependencyDepth: 0,
+          },
+          {
+            resourceId: 'asset:ui',
+            taskId: 'design-foundation',
+            dependencyDepth: 1,
+          },
+          {
+            resourceId: 'asset:deleted',
+            taskId: 'task-1',
+            dependencyDepth: 99,
+          },
         ],
         producerMappingTruncated: true,
       }),
@@ -146,6 +158,12 @@ describe('resource dependency graph model', () => {
         ['asset:ui', 'design-foundation'],
       ]),
     );
+    expect(graph.dependencyDepthByResourceId).toEqual(
+      new Map([
+        ['asset:spec', 0],
+        ['asset:ui', 1],
+      ]),
+    );
     expect(graph.producerMappingTruncated).toBe(true);
     expect(projectResourceGraphNeighbors(graph, 'asset:deleted')).toEqual({
       upstreamResourceIds: new Set(),
diff --git a/apps/ai-game-creator-shell/tests/useProjectResourceCanvasLayout.test.ts b/apps/ai-game-creator-shell/tests/useProjectResourceCanvasLayout.test.ts
index d07892f34..ac8add1d8 100644
--- a/apps/ai-game-creator-shell/tests/useProjectResourceCanvasLayout.test.ts
+++ b/apps/ai-game-creator-shell/tests/useProjectResourceCanvasLayout.test.ts
@@ -58,6 +58,17 @@ function position(
   };
 }
 
+function automaticPosition(
+  resourceId: string,
+  x: number,
+  y: number,
+): ProjectResourceCanvasPosition {
+  return {
+    ...position(resourceId, x, y),
+    manuallyPlaced: false,
+  };
+}
+
 afterEach(() => {
   cleanup();
   window.__TAURI__ = undefined;
@@ -72,6 +83,117 @@ describe('useProjectResourceCanvasLayout', () => {
     );
   });
 
+  it('waits for dependency graph initialization before reading or writing layout', async () => {
+    const updates: ProjectResourceCanvasPosition[][] = [];
+    const invoke = vi.fn(
+      async (command: string, args?: Record<string, unknown>) => {
+        if (command === 'read_local_project_resource_canvas_layout') {
+          return persistedLayout('dependency', 0, []);
+        }
+        if (command === 'update_local_project_resource_canvas_layout') {
+          const positions = structuredClone(
+            args?.positions as ProjectResourceCanvasPosition[],
+          );
+          updates.push(positions);
+          return {
+            status: 'updated',
+            layout: persistedLayout('dependency', 1, positions),
+          };
+        }
+        throw new Error(`unexpected invoke ${command}`);
+      },
+    );
+    window.__TAURI__ = { core: { invoke } };
+    const shallowResource = resource('resource-a');
+    const deepResource = { ...shallowResource, dependencyDepth: 2 };
+    const { result, rerender } = renderHook(
+      ({ initializationReady, resources }) =>
+        useProjectResourceCanvasLayout({
+          projectPath,
+          projectId,
+          mode: 'dependency',
+          resources,
+          initializationReady,
+          rederiveAutomaticPositions: true,
+        }),
+      {
+        initialProps: {
+          initializationReady: false,
+          resources: [shallowResource],
+        },
+      },
+    );
+
+    expect(invoke).not.toHaveBeenCalled();
+    expect(result.current.layout.positions).toEqual([]);
+
+    rerender({ initializationReady: true, resources: [deepResource] });
+    await waitFor(() => expect(updates).toHaveLength(1));
+    expect(result.current.layout.positions[0]).toMatchObject({
+      resourceId: 'resource-a',
+      x: 392,
+      manuallyPlaced: false,
+    });
+    expect(invoke.mock.calls[0]?.[0]).toBe(
+      'read_local_project_resource_canvas_layout',
+    );
+  });
+
+  it('rederives automatic dependency positions while preserving manual positions', async () => {
+    const resourceA = { ...resource('resource-a'), dependencyDepth: 2 };
+    const resourceB = resource('resource-b');
+    const updates: ProjectResourceCanvasPosition[][] = [];
+    const invoke = vi.fn(
+      async (command: string, args?: Record<string, unknown>) => {
+        if (command === 'read_local_project_resource_canvas_layout') {
+          return persistedLayout('dependency', 4, [
+            automaticPosition('resource-a', 0, 0),
+            position('resource-b', 600, 40),
+          ]);
+        }
+        if (command === 'update_local_project_resource_canvas_layout') {
+          const positions = structuredClone(
+            args?.positions as ProjectResourceCanvasPosition[],
+          );
+          updates.push(positions);
+          return {
+            status: 'updated',
+            layout: persistedLayout('dependency', 5, positions),
+          };
+        }
+        throw new Error(`unexpected invoke ${command}`);
+      },
+    );
+    window.__TAURI__ = { core: { invoke } };
+
+    const { result } = renderHook(() =>
+      useProjectResourceCanvasLayout({
+        projectPath,
+        projectId,
+        mode: 'dependency',
+        resources: [resourceA, resourceB],
+        rederiveAutomaticPositions: true,
+      }),
+    );
+
+    await waitFor(() => expect(updates).toHaveLength(1));
+    expect(result.current.layout.positions).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          resourceId: 'resource-a',
+          x: 392,
+          manuallyPlaced: false,
+        }),
+        expect.objectContaining({
+          resourceId: 'resource-b',
+          x: 600,
+          y: 40,
+          manuallyPlaced: true,
+        }),
+      ]),
+    );
+  });
+
   it('rejects an unsafe revision from the initial IPC read without writing', async () => {
     const resourceA = resource('resource-a');
     const invoke = vi.fn(async (command: string) => {
diff --git a/docs/prd/【AI游戏创作】项目开发工作台PRD-2026-07-20.md b/docs/prd/【AI游戏创作】项目开发工作台PRD-2026-07-20.md
index ef4fa28e4..2ca695d2a 100644
--- a/docs/prd/【AI游戏创作】项目开发工作台PRD-2026-07-20.md
+++ b/docs/prd/【AI游戏创作】项目开发工作台PRD-2026-07-20.md
@@ -1,6 +1,6 @@
 # AI 游戏创作项目开发工作台 PRD
 
-更新时间：`2026-07-31`
+更新时间：`2026-08-03`
 
 ## 1. 产品定位
 
@@ -153,7 +153,7 @@ P0 中 `approvalMode` 只能有效写入 `strict`；其它值只能作为不可
 
 ### 5.2 资源画布布局（P1）
 
-实现状态（2026-07-31）：本节布局合同已在独立客户端落地，dependency / type 双模式通过项目内 CAS sidecar 独立持久化；dependency 模式由 Tauri Rust 只读构建关系拓扑、前端 SVG 派生几何，图结构和线段均不写入布局 sidecar。资源替换、缩放 / 平移等其余 P1 能力仍按本文非目标保持未实现。
+实现状态（2026-08-03）：本节布局合同已在独立客户端落地，dependency / type 双模式通过项目内 CAS sidecar 独立持久化；dependency 模式由 Tauri Rust 只读构建关系拓扑与确定性依赖深度、前端 SVG 派生几何，图结构和线段均不写入布局 sidecar。依赖图加载完成前设布局初始化屏障，避免以临时 `dependencyDepth=0` 生成并持久化错误坐标。资源替换、缩放 / 平移等其余 P1 能力仍按本文非目标保持未实现。
 
 ```ts
 type ProjectResourceCanvasLayout = {
@@ -237,10 +237,10 @@ type UpdateProjectResourceCanvasLayoutResult =
 - 资源卡改用 Pointer Events 驱动二维拖动；超过统一移动阈值后才进入拖动态，普通点击仍打开唯一资源详情浮层，`pointercancel` 恢复拖动前位置。
 - 资源只能在原 `section` 内拖动。不同 section 之间既不能通过指针拖入，也不能通过持久 payload 改变当前资源的前端分类事实。
 - dependency 默认布局按 `dependencyDepth` 形成横向层级，同层资源纵向寻找第一个不重叠位置；type 默认布局固定按“资源子类型 -> 媒体类型 -> 名称 -> 资源 ID”稳定排序，在分区内从左到右、从上到下寻找第一个空位。布局模型的 `subtype` 必填：manifest 资产使用 `asset.kind`，任务产物、导入附件与 Agent 文本成果分别使用稳定的 `task-artifact`、`attachment`、`agent-result`，不得以缺失值或显示文案兜底；资源协调签名必须包含 subtype。卡片尺寸、间距和拖动阈值必须由单一前端布局模型常量维护。
-- 资源集合变化时保留全部仍存在的坐标，只为新 ID 计算默认位置，并删除已确认失效的旧 ID；无论 `manuallyPlaced` 为何，已经写入的现存坐标都不得因重新排序、模式切换或新增资源被自动改写。
+- type 模式资源集合变化时保留全部仍存在的坐标，只为新 ID 计算默认位置，并删除已确认失效的旧 ID。dependency 模式只永久保留 `manuallyPlaced=true` 的用户坐标；`manuallyPlaced=false` 属于可派生自动位置，在 Rust 关系图首次就绪或可信 producer / dependency depth 变化后按最终拓扑确定性重算。自动重算不得移动手动坐标，协调结果与持久布局逐项一致时不得产生 CAS 写入。
 - 搜索或筛选只隐藏卡片，不删除、压缩或重排其坐标；清空搜索后恢复原位置。
 - 窗口尺寸变化只改变可视范围和分区滚动边界，不回写、裁切或缩放持久坐标。当前客户端继续以 `1280×800` 横屏合同验收。
-- 打开项目、切换 mode 或当前 mode 首次出现新资源时执行“读取 -> 协调 -> 必要时 CAS 写入”；项目或 mode 已切换后返回的旧异步结果必须丢弃。
+- 打开项目、切换 mode 或当前 mode 首次出现新资源时执行“读取 -> 协调 -> 必要时 CAS 写入”；dependency 模式必须先等待与当前 `projectPath + projectId + resource inputs` 匹配的 Rust 图进入 `ready` 或 `failed` 终态，等待期间不得创建 fallback、读取 sidecar、协调资源或入队保存。`failed` 只允许以空图降级初始化一次。项目或 mode 已切换后返回的旧异步结果必须丢弃。
 - 同一 `projectPath + projectId + mode` 的首次读取与资源集合协调必须分开：资源集合变化不得取消已经发出的读取或保存。同一 scope 内全部手动拖动和资源自动协调写入使用同一 FIFO，任一时刻最多一个 CAS 在途，后一笔必须使用前一笔成功返回的 revision，不能用“最后请求获胜”跳过中间 CAS。切换项目或 mode 后，旧 scope 的在途请求不能阻塞新 scope 队列；前端放弃旧请求槽位并丢弃其迟到响应，后端继续依靠 `expectedProjectId + expectedRevision + 系统锁` 仲裁已发出的请求。
 - 某笔 CAS 在途期间，同一 scope 内对相同 `resourceId + section` 重复产生但尚未发送的拖动意图必须折叠为最后坐标；已经在途的请求不得取消，不同资源的顺序不得跨越。队列增长必须受当前资源与分区数量约束，不能随连续 pointer 事件无界累积。
 - 用户拖动结束后先乐观更新，再立即提交一次 CAS。成功后以返回布局更新 revision；普通写入失败时恢复最近可信持久布局并提示“布局保存失败，已恢复上次布局”。
@@ -250,7 +250,7 @@ type UpdateProjectResourceCanvasLayoutResult =
 #### 5.2.5 资源依赖关系图层
 
 - 图层只在 dependency 模式挂载；type 模式不得渲染 SVG、连线或 marker。切换 mode、切换项目或卸载工作台时必须销毁旧图层，并清理尺寸观察和窗口事件监听。
-- 输入固定为当前资源投影的全部卡片身份 / 坐标与 Tauri Rust 返回的 `ProjectResourceGraph` 只读 DTO；Rust 负责资源过滤、去重、环检测、任务流聚合和一跳连接索引，前端只负责 DTO 防御归一化、浏览器几何与原生 SVG path / marker。SVG 叠加在资源卡底层并设置 `pointer-events: none`，不得引入 D3、React Flow 等图表库，也不得阻断卡片点击和 Pointer Events 拖动。
+- 输入固定为当前资源投影的全部卡片身份 / 坐标与 Tauri Rust 返回的 `ProjectResourceGraph` 只读 DTO；Rust 负责资源过滤、去重、迭代式环检测、SCC 压缩后的确定性依赖深度、任务流聚合和一跳连接索引，前端只负责 DTO 防御归一化、浏览器几何与原生 SVG path / marker。SVG 叠加在资源卡底层并设置 `pointer-events: none`，不得引入 D3、React Flow 等图表库，也不得阻断卡片点击和 Pointer Events 拖动。实时拖动坐标属于 DOM 临时状态，不得逐帧通过 Tauri IPC 交给 Rust。
 - `asset-reference` 表示精确资源引用，使用橙色实线与连续贝塞尔曲线。`GameCreationAppAssetManifestEntry.source.referenceResourceIds` 中的外部资源 ID 必须先唯一匹配另一项资产的 `source.resourceId`，再映射为当前资源卡 ID；缺失、重复或已删除的目标均不得渲染幽灵连线。
 - `task-flow` 表示任务产物流转，使用灰色圆头虚线。任务依赖按 `sourceTaskId -> targetTaskId` 聚合为一条主线，两端资源仅绘制平滑曲线分支，不得出现直角折线；禁止对上下游资源生成笛卡尔积连线。任务主线与分支可以使用不同线宽和透明度表达聚合层级，但不能改变端点或方向语义。
 - 画布资产 producer 只能来自 `agent.runtime.canvas.asset_generate` 的 `assetId -> agentId` 审计且 `agentId` 必须存在于当前 manifest；External Editor `source.taskId` 属于平台生成任务命名空间，禁止当作 manifest task ID。证据缺失、冲突或有界审计读取未覆盖时不生成对应 task flow，不猜测归属。
@@ -259,7 +259,7 @@ type UpdateProjectResourceCanvasLayoutResult =
 - 搜索只允许为当前可见端点生成几何；任一精确引用端点隐藏时该线隐藏，聚合任务流只保留仍可见的两端分支，任一侧没有可见资源时整条任务流隐藏。
 - 选中资源后，高亮其直接上游、直接下游卡片和关联边，弱化其余边；不做跨多层递归高亮。选中 ID 已失效时按未选中处理。
 - 拖动预览坐标必须直接进入 SVG 几何计算，使连线随 pointer move 实时更新；拖动结束仍只保存卡片布局坐标，不持久化 path、marker、section 原点或任何图结构。
-- Pointer Move 必须按动画帧合并；基础 positions 不随每帧复制，静态 SVG 拓扑保持复用，每帧只更新当前资源局部索引关联的 path。`ResizeObserver` 在单个图层生命周期只允许构造一次。dependency section 额外提供至少 `64px` 右侧视觉 gutter，确保最右侧自环和箭头可完整滚动显示，但不得修改卡片坐标或布局 sidecar。
+- Pointer Move 必须按动画帧合并并完全避开工作台父组件 state：拖动卡片通过 ref 直接更新 CSS 坐标，SVG 通过命令式句柄只更新当前资源局部索引关联的 path。基础 positions 不随每帧复制，静态卡片和 SVG 拓扑保持复用，非拖动卡片不得因预览帧重新渲染。`ResizeObserver` 在单个图层生命周期只允许构造一次。dependency section 额外提供至少 `64px` 右侧视觉 gutter，确保最右侧自环和箭头可完整滚动显示，但不得修改卡片坐标或布局 sidecar。
 
 ### 5.3 资源类型与替换兼容性（P1）
 
@@ -405,6 +405,7 @@ type ProjectAgentMudPointAttribution = {
 5. 搜索、选择和拖动分别触发端点过滤、直接上下游高亮和实时几何更新；原有点击、详情浮层与拖动保存行为不回归。
 6. 切换布局模式或项目后旧 SVG、ResizeObserver 与窗口监听全部清理；图层从不写入 layout sidecar、manifest 或其它持久化。
 7. 4096 资源链式 fixture 下，拖动一张卡片只更新它关联的线段；同一图层 100 次拖动期间 Observer 仍只构造一次。真实 Chromium 目标为拖动 p95 小于 `16.7ms`、不出现超过 `50ms` 的 long task，并完整显示最右侧自环与箭头。
+8. Rust 图读取延迟时，dependency sidecar 在图进入 `ready / failed` 前没有读取或写入；首次布局直接使用 Rust 返回的最终 producer 与 dependency depth。重新打开旧布局时手动位置逐项不变，自动位置按最终拓扑协调且相同结果不增加 revision。
 
 ## 8. 非目标
 
diff --git a/docs/project-memory/shared-memory/decision-log.md b/docs/project-memory/shared-memory/decision-log.md
index 1b4d0dae0..9b889b71f 100644
--- a/docs/project-memory/shared-memory/decision-log.md
+++ b/docs/project-memory/shared-memory/decision-log.md
@@ -1,5 +1,12 @@
 # 决策记录
 
+## 2026-08-03 依赖布局等待 Rust 图终态且拖动热路径脱离 React state
+
+- 背景：资源图异步返回前，dependency 布局会先以 `dependencyDepth=0` 创建并持久化自动坐标；图返回后的 reconcile 保留既有位置，导致首次布局永久停留在错误层级。4096 张真实资源卡拖动时，逐帧父组件 state 还会重渲染全部卡片，即使 SVG 已只更新局部 path 也无法满足帧预算。
+- 决策：Rust 关系图 read model 负责在完整任务图 SCC 压缩后返回确定性 resource dependency depth；dependency 模式等待当前 scope 图进入 `ready / failed` 后才启动布局读取与协调。手动位置永久保留，自动位置允许按最终图重新派生。拖动 preview 留在前端 ref/DOM 热路径，命令式更新卡片 CSS 与局部 SVG path，不逐帧跨 Tauri IPC，也不写 layout sidecar。
+- 边界：不修改 `game-creator-resource-layout.v1`、布局 Rust 持久层、manifest、api-server 或 SpacetimeDB；type 模式不等待资源图且继续保留全部已有坐标。图失败只降级初始化一次，项目或 mode 切换后旧图结果必须丢弃。
+- 验证：延迟图 Promise 证明终态前零布局读取/写入，手动位置保持且自动位置按最终深度协调；4096 张真实卡片连续拖动证明非拖动卡片零重渲染、静态 SVG 不重建、Observer 单实例，并以 Chromium p95 `<16.7ms` 和零 `>50ms` long task 验收。
+
 > 用途：记录已经确认、会影响后续开发的长期技术/产品/协作决策。短期讨论不要写在这里。
 
 ## 记录格式
diff --git a/docs/project-memory/shared-memory/pitfalls.md b/docs/project-memory/shared-memory/pitfalls.md
index 8a5d2f94d..1df822307 100644
--- a/docs/project-memory/shared-memory/pitfalls.md
+++ b/docs/project-memory/shared-memory/pitfalls.md
@@ -22,6 +22,14 @@
 - 验证：Rust fixture 把 `source.taskId` 固定为 `task-1 / task-2`，只有审计提供 `art-director / design-foundation` 后才生成 task flow；移除审计后橙色引用保留、灰色任务流消失。AppSurface 使用相同生产数据形状回归。
 - 关联：`apps/ai-game-creator-shell/src-tauri/src/project/resource_dependency_graph.rs`、`apps/ai-game-creator-shell/src/view/project-development/resourceDependencyGraphModel.ts`、`docs/technical/【技术方案】AI游戏创作智能体App实施计划-2026-06-24.md`。
 
+## 依赖图未就绪时不能先初始化资源布局
+
+- 现象：首次打开 dependency 画布时所有资源短暂按深度 0 排列；Rust 图返回后连线正确，但卡片仍停留在同一列，错误自动坐标还可能已经写入 sidecar。
+- 原因：资源图和布局读取独立异步启动，布局 Hook 在图未返回时使用空图资源创建 fallback；后续 reconcile 按旧合同保留全部已有坐标，真实 producer 与 dependency depth 无法纠正首次自动位置。
+- 处理：dependency 模式增加按项目与资源输入隔离的图加载屏障，`ready / failed` 前不启动布局 Hook 的 fallback、读取、协调或保存。Rust read model 返回确定性依赖深度；已有布局只永久保留手动位置，自动位置按最终图重新派生。type 模式不受图加载影响。
+- 验证：用 deferred graph Promise 断言终态前 Tauri layout read/update 调用均为 0；图就绪后首次坐标直接按最终深度生成，旧 scope 迟到结果无效，手动坐标不变且相同自动布局不增加 revision。
+- 关联：`apps/ai-game-creator-shell/src/view/project-development/index.tsx`、`apps/ai-game-creator-shell/src/view/project-development/useProjectResourceCanvasLayout.ts`、`apps/ai-game-creator-shell/src-tauri/src/project/resource_dependency_graph.rs`。
+
 ## Jenkins 异步备份不能用 nohup 脱离作业
 
 - 现象：Stdb Publish 成功，上传日志只留下“已获取进程锁 / 上传已有备份 / 目标对象”，没有成功或可捕获错误；本地 tar.gz 和 `uploadStatus=deferred` manifest 每次发布后继续增长。
diff --git a/docs/technical/【技术方案】AI游戏创作智能体App实施计划-2026-06-24.md b/docs/technical/【技术方案】AI游戏创作智能体App实施计划-2026-06-24.md
index e2a6f4f4b..283fa5b6a 100644
--- a/docs/technical/【技术方案】AI游戏创作智能体App实施计划-2026-06-24.md
+++ b/docs/technical/【技术方案】AI游戏创作智能体App实施计划-2026-06-24.md
@@ -396,6 +396,10 @@ game-project/
 - 基础 positions 保持稳定，拖动预览单独传入。Pointer Move 通过 `requestAnimationFrame` 合帧；静态 task/reference React SVG 子树不依赖 drag preview，每帧只按局部连接索引重新计算当前资源关联的 edge / flow 并更新对应 path `d`。搜索、选择、项目切换、真实 positions 或 section origin 变化才允许重新协调静态图层；结束后仍只通过原布局 Hook 保存卡片坐标，SVG 几何从不持久化。
 - Rust、前端 DTO/SVG 和工作台 AppSurface 回归覆盖生产 `task-1` 数据形状、真实 producer、证据缺失、精确引用、去重、无效 ID、完整任务环、4096 链式拓扑、聚合复杂度、搜索过滤、选择高亮、局部拖动更新、稳定 Observer、type 模式卸载与项目切换销毁。真实 Chromium 性能目标为拖动 p95 `<16.7ms`、不出现 `>50ms` long task；若实测仍超过预算，再增加 viewport + overscan 边裁剪，不在首轮预先引入额外复杂度。
 
+2026-08-03 评审加固：Rust read model 在现有 producer assignment 上同时返回经完整任务图 SCC 压缩计算的确定性 `dependencyDepth`，前端不再递归推导正式依赖层级。dependency 模式以 scope 化 `idle / loading / ready / failed` 状态阻断布局 Hook；图终态前不创建 fallback、不读取或写入 sidecar，图失败只以空图初始化一次。读取已有 dependency 布局时保留全部 `manuallyPlaced=true` 坐标，把 `manuallyPlaced=false` 作为可派生自动位置按最终深度重新协调；结果未变化时不写入。
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+拖动热路径不再把 preview 写入工作台父组件 state。卡片使用稳定回调与 `React.memo`，动画帧直接更新拖动卡片 CSS 变量和 section 临时 extent；SVG 图层暴露命令式 preview 句柄，复用 Rust 局部连接索引和已缓存 path 节点，只更新受影响 reference / task-flow 几何。ResizeObserver 仍为单图层单实例。4096 张真实卡片测试必须证明非拖动卡片零重渲染、静态 SVG 子树不重建，Chromium p95 继续以 `<16.7ms` 为门槛。实时 DOM 几何不得通过 Tauri IPC 往返 Rust。
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 ## 分阶段实施
 
 1. 在 `platform-agent` 建立游戏创作专业组与种子任务图契约。