fix: reset node height on paste to prevent compounding growth

When pasting nodes with inline parameters expanded, the copied
style.height (which included settings panel contribution) was preserved,
causing BaseNode's ResizeObserver to add panel height again on top of the
already-inflated height. Now pasteNodes() resets height to type defaults
while preserving user-set width.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/store/workflowStore.ts

@@ -728,16 +728,25 @@ const workflowStoreImpl: StateCreator<WorkflowStore> = (set, get) => ({
     });
 
     // Create new nodes with updated IDs and offset positions
-    const newNodes: WorkflowNode[] = clipboard.nodes.map((node) => ({
-      ...node,
-      id: idMapping.get(node.id)!,
-      position: {
-        x: node.position.x + offset.x,
-        y: node.position.y + offset.y,
-      },
-      selected: true, // Select newly pasted nodes
-      data: JSON.parse(JSON.stringify(node.data)),
-    }));
+    const newNodes: WorkflowNode[] = clipboard.nodes.map((node) => {
+      const defaults = defaultNodeDimensions[node.type as NodeType] || { width: 300, height: 280 };
+      return {
+        ...node,
+        id: idMapping.get(node.id)!,
+        position: {
+          x: node.position.x + offset.x,
+          y: node.position.y + offset.y,
+        },
+        selected: true, // Select newly pasted nodes
+        // Reset height to defaults so BaseNode's ResizeObserver
+        // can correctly add settings panel height from the right baseline
+        style: { width: node.style?.width ?? defaults.width, height: defaults.height },
+        width: undefined,
+        height: undefined,
+        measured: undefined,
+        data: JSON.parse(JSON.stringify(node.data)),
+      };
+    });
 
     // Create new edges with updated source/target IDs
     const newEdges: WorkflowEdge[] = clipboard.edges.map((edge) => ({