craft/src/editor/EditorShell.tsx

@@ -4,6 +4,7 @@ import { TopBar } from '../panels/topbar/TopBar';
 import { LeftPanel } from '../panels/left/LeftPanel';
 import { RightPanel } from '../panels/right/RightPanel';
 import { MobilePanelBar } from '../panels/mobile/MobilePanelBar';
+import { MobileSelectionToolbar } from '../panels/mobile/MobileSelectionToolbar';
 import { Canvas } from './Canvas';
 import { ContextMenu } from '../panels/context-menu/ContextMenu';
 import { useContextMenu } from '../hooks/useContextMenu';
@@ -97,6 +98,7 @@ export const EditorShell: React.FC = () => {
           {!isMobile && <RightPanel />}
         </div>
         {isMobile && <MobilePanelBar />}
+        {isMobile && <MobileSelectionToolbar />}
         <ContextMenu
           visible={menuState.visible}
           x={menuState.x}

craft/src/hooks/useNodeActions.test.tsx

@@ -0,0 +1,232 @@
+import { describe, test, expect, vi, beforeEach, afterEach } from 'vitest';
+import React from 'react';
+import { createRoot, Root } from 'react-dom/client';
+import { act } from 'react-dom/test-utils';
+import type { NodeTree, Node } from '@craftjs/core';
+import { useNodeActions, type NodeActions } from './useNodeActions';
+
+/**
+ * Phase B, item 1: `useNodeActions` was extracted out of `ContextMenu.tsx` so
+ * the desktop right-click menu and the mobile selection toolbar
+ * (`MobileSelectionToolbar`) share one implementation. This suite exercises
+ * the hook directly (mocking `@craftjs/core`'s `useEditor`, mirroring the
+ * pattern in `useKeyboardShortcuts.test.tsx`), covering:
+ *  - moveUp/moveDown call `actions.move` with the right target index, and
+ *    are no-ops at the respective boundary
+ *  - canMoveUp/canMoveDown reflect the node's position among its siblings
+ *  - duplicate regenerates ids before calling `actions.addNodeTree`
+ *  - selectParent calls `actions.selectNode` with the parent id
+ *  - deleteNode routes through `findDeletableTarget` (also covering the
+ *    "no deletable target" no-op)
+ *  - ROOT/null nodeId disables every action safely (no-ops, all
+ *    canMoveUp/canMoveDown/canDelete false)
+ */
+
+const moveMock = vi.fn();
+const addNodeTreeMock = vi.fn();
+const selectNodeMock = vi.fn();
+const deleteMock = vi.fn();
+
+interface FakeNodeData {
+  parent: string | null;
+  nodes: string[];
+}
+
+let fakeNodes: Record<string, { data: FakeNodeData }> = {};
+
+const COPIED_TREE: NodeTree = {
+  rootNodeId: 'child-1',
+  nodes: {
+    'child-1': {
+      id: 'child-1',
+      data: { props: {}, type: { resolvedName: 'Container' }, name: 'Container', displayName: 'Container', isCanvas: false, parent: 'parent-1', linkedNodes: {}, nodes: [], hidden: false },
+      info: {},
+      events: { selected: false, dragged: false, hovered: false },
+      dom: null,
+      related: {},
+      rules: {},
+      _hydrationTimestamp: 0,
+    } as unknown as Node,
+  },
+};
+
+function makeQuery() {
+  return {
+    node: (id: string) => ({
+      get: () => fakeNodes[id] ?? null,
+      toNodeTree: () => {
+        if (id !== 'child-1') throw new Error(`unexpected toNodeTree() for "${id}"`);
+        return COPIED_TREE;
+      },
+    }),
+  };
+}
+
+vi.mock('@craftjs/core', () => ({
+  useEditor: (collector?: (state: any, query: any) => any) => {
+    const state = {
+      nodes: Object.fromEntries(Object.entries(fakeNodes).map(([id, n]) => [id, n])),
+    };
+    const query = makeQuery();
+    const collected = collector ? collector(state, query) : {};
+    return {
+      ...collected,
+      actions: {
+        move: moveMock,
+        addNodeTree: addNodeTreeMock,
+        selectNode: selectNodeMock,
+        delete: deleteMock,
+      },
+      query,
+    };
+  },
+}));
+
+vi.mock('../utils/craft-tree', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('../utils/craft-tree')>();
+  return { ...actual, regenerateTreeIds: vi.fn(actual.regenerateTreeIds) };
+});
+
+import { regenerateTreeIds } from '../utils/craft-tree';
+const regenerateTreeIdsMock = vi.mocked(regenerateTreeIds);
+
+let container: HTMLDivElement;
+let root: Root;
+let captured: NodeActions | null = null;
+
+const Probe: React.FC<{ nodeId: string | null }> = ({ nodeId }) => {
+  captured = useNodeActions(nodeId);
+  return null;
+};
+
+function render(nodeId: string | null) {
+  container = document.createElement('div');
+  document.body.appendChild(container);
+  act(() => {
+    root = createRoot(container);
+    root.render(<Probe nodeId={nodeId} />);
+  });
+}
+
+function rerender(nodeId: string | null) {
+  act(() => {
+    root.render(<Probe nodeId={nodeId} />);
+  });
+}
+
+function unmount() {
+  act(() => {
+    root.unmount();
+  });
+  container.remove();
+}
+
+beforeEach(() => {
+  moveMock.mockClear();
+  addNodeTreeMock.mockClear();
+  selectNodeMock.mockClear();
+  deleteMock.mockClear();
+  regenerateTreeIdsMock.mockClear();
+  captured = null;
+  fakeNodes = {
+    ROOT: { data: { parent: null, nodes: ['parent-1'] } },
+    'parent-1': { data: { parent: 'ROOT', nodes: ['child-0', 'child-1', 'child-2'] } },
+    'child-0': { data: { parent: 'parent-1', nodes: [] } },
+    'child-1': { data: { parent: 'parent-1', nodes: [] } },
+    'child-2': { data: { parent: 'parent-1', nodes: [] } },
+  };
+});
+
+afterEach(() => {
+  if (root) unmount();
+});
+
+describe('useNodeActions', () => {
+  test('a middle child can move both up and down', () => {
+    render('child-1');
+    expect(captured!.canMoveUp).toBe(true);
+    expect(captured!.canMoveDown).toBe(true);
+  });
+
+  test('the first child cannot move up, but can move down', () => {
+    render('child-0');
+    expect(captured!.canMoveUp).toBe(false);
+    expect(captured!.canMoveDown).toBe(true);
+  });
+
+  test('the last child can move up, but not down', () => {
+    render('child-2');
+    expect(captured!.canMoveUp).toBe(true);
+    expect(captured!.canMoveDown).toBe(false);
+  });
+
+  test('moveUp calls actions.move with idx - 1, moveDown with idx + 2 (Craft.js index semantics)', () => {
+    render('child-1');
+    act(() => captured!.moveUp());
+    expect(moveMock).toHaveBeenCalledWith('child-1', 'parent-1', 0);
+
+    moveMock.mockClear();
+    act(() => captured!.moveDown());
+    expect(moveMock).toHaveBeenCalledWith('child-1', 'parent-1', 3);
+  });
+
+  test('moveUp/moveDown at a boundary are no-ops', () => {
+    render('child-0');
+    act(() => captured!.moveUp());
+    expect(moveMock).not.toHaveBeenCalled();
+
+    rerender('child-2');
+    act(() => captured!.moveDown());
+    expect(moveMock).not.toHaveBeenCalled();
+  });
+
+  test('duplicate regenerates ids before calling actions.addNodeTree with the parent id', () => {
+    render('child-1');
+    act(() => captured!.duplicate());
+
+    expect(regenerateTreeIdsMock).toHaveBeenCalledTimes(1);
+    expect(addNodeTreeMock).toHaveBeenCalledTimes(1);
+    const [tree, parentId] = addNodeTreeMock.mock.calls[0];
+    expect(parentId).toBe('parent-1');
+    expect(tree.rootNodeId).not.toBe(COPIED_TREE.rootNodeId);
+  });
+
+  test('selectParent calls actions.selectNode with the parent id', () => {
+    render('child-1');
+    act(() => captured!.selectParent());
+    expect(selectNodeMock).toHaveBeenCalledWith('parent-1');
+  });
+
+  test('deleteNode calls actions.delete with the node id when deletable', () => {
+    render('child-1');
+    expect(captured!.canDelete).toBe(true);
+    act(() => captured!.deleteNode());
+    expect(deleteMock).toHaveBeenCalledWith('child-1');
+  });
+
+  test('ROOT nodeId disables every action and is a safe no-op', () => {
+    render('ROOT');
+    expect(captured!.canMoveUp).toBe(false);
+    expect(captured!.canMoveDown).toBe(false);
+    expect(captured!.canDelete).toBe(false);
+
+    act(() => {
+      captured!.moveUp();
+      captured!.moveDown();
+      captured!.duplicate();
+      captured!.selectParent();
+      captured!.deleteNode();
+    });
+    expect(moveMock).not.toHaveBeenCalled();
+    expect(addNodeTreeMock).not.toHaveBeenCalled();
+    expect(selectNodeMock).not.toHaveBeenCalled();
+    expect(deleteMock).not.toHaveBeenCalled();
+  });
+
+  test('null nodeId disables every action and is a safe no-op', () => {
+    render(null);
+    expect(captured!.canMoveUp).toBe(false);
+    expect(captured!.canMoveDown).toBe(false);
+    expect(captured!.canDelete).toBe(false);
+  });
+});

craft/src/hooks/useNodeActions.ts

@@ -0,0 +1,169 @@
+import { useEditor } from '@craftjs/core';
+import { regenerateTreeIds } from '../utils/craft-tree';
+import { findDeletableTarget } from '../utils/craft-helpers';
+
+export interface NodeActions {
+  moveUp: () => void;
+  moveDown: () => void;
+  duplicate: () => void;
+  deleteNode: () => void;
+  selectParent: () => void;
+  /** True if `nodeId` has an earlier sibling under the same parent (so
+   *  `moveUp` would actually move it). False for ROOT/null/no-parent. */
+  canMoveUp: boolean;
+  /** True if `nodeId` has a later sibling under the same parent (so
+   *  `moveDown` would actually move it). False for ROOT/null/no-parent. */
+  canMoveDown: boolean;
+  /** True if `findDeletableTarget` resolves to a real, deletable node (either
+   *  `nodeId` itself, or an ancestor when `nodeId` is an empty linked-node
+   *  slot whose siblings are all also empty -- see `craft-helpers.ts`). */
+  canDelete: boolean;
+}
+
+/**
+ * Shared node-action logic (move up/down, duplicate, delete, select parent)
+ * extracted from `ContextMenu.tsx` (Phase B) so both the desktop right-click
+ * menu AND the mobile on-canvas selection toolbar (`MobileSelectionToolbar`)
+ * drive the exact same behavior from one place instead of two independent
+ * copies drifting apart.
+ *
+ * IMPORTANT gotcha this hook works around: `@craftjs/core`'s `useEditor`
+ * collector (`@craftjs/utils`' `useCollector`) only synchronously computes
+ * the collector function ONCE, on this hook's very first mount. After that,
+ * it updates purely in reaction to the underlying store's OWN change
+ * notifications, invoking whatever collector closure is current AT THAT
+ * NOTIFICATION -- so a collector that closes over `nodeId` (an argument that
+ * changes across renders of the SAME mounted hook instance, e.g. every time
+ * `MobileSelectionToolbar` re-renders with a newly-selected node) goes stale
+ * for exactly one render: the cached value from the last store notification
+ * (computed against the PREVIOUS nodeId) is what gets returned, until some
+ * unrelated store event happens to trigger a fresh computation. An earlier
+ * version of this hook computed `canMoveUp`/`canMoveDown`/`canDelete` inside
+ * such a collector and was caught showing the PREVIOUS selection's move
+ * boundaries in the mobile toolbar for one render after tapping a new node
+ * (verified with real Playwright touch taps against a real Craft.js
+ * document -- a plain mocked `useEditor` in a unit test doesn't reproduce
+ * this, since a hand-rolled mock has no reason to replicate the real
+ * library's caching).
+ *
+ * The fix: get `actions`/`query` from a collector-FREE `useEditor()` call
+ * (an always-live reference, same pattern `ContextMenu.tsx` used before this
+ * extraction) and compute `canMoveUp`/`canMoveDown`/`canDelete` as plain
+ * synchronous code during render using that live `query` -- never cached.
+ *
+ * That still leaves one gap: `nodeId` staying the SAME across renders while
+ * its position changes (e.g. tapping "Move Up" repeatedly on the same
+ * still-selected node) needs SOMETHING to trigger a re-render so the boundary
+ * flags below get recomputed. An earlier version of this hook forced that
+ * via a second `useEditor((state) => ({ _: state.nodes }))` subscription --
+ * but subscribing to the WHOLE node map reacts to every `dom` ref
+ * assignment too (Craft's `connectors.connect(ref)` calls `actions.setDOM`
+ * synchronously from a React ref callback during COMMIT, i.e. while some
+ * OTHER component is still mounting), which trips React's "Cannot update a
+ * component while rendering a different component" warning the moment a
+ * freshly-added container with children mounts. Callers that need
+ * `canMoveUp`/`canMoveDown` to refresh after a move they themselves
+ * triggered (`MobileSelectionToolbar`) should instead bump their OWN local
+ * state right after calling `moveUp`/`moveDown` -- a plain, local,
+ * event-handler-triggered re-render, not a store-wide subscription.
+ */
+export function useNodeActions(nodeId: string | null | undefined): NodeActions {
+  const { actions, query } = useEditor();
+
+  const isRootOrNull = !nodeId || nodeId === 'ROOT';
+
+  let canMoveUp = false;
+  let canMoveDown = false;
+  if (!isRootOrNull) {
+    try {
+      const node = query.node(nodeId).get();
+      const parentId: string | null | undefined = node?.data?.parent;
+      if (parentId) {
+        const siblings: string[] = query.node(parentId).get()?.data?.nodes || [];
+        const idx = siblings.indexOf(nodeId);
+        canMoveUp = idx > 0;
+        canMoveDown = idx !== -1 && idx < siblings.length - 1;
+      }
+    } catch {
+      // Node no longer exists (e.g. deleted out from under a stale
+      // reference) -- leave both false.
+    }
+  }
+
+  const canDelete = !isRootOrNull && !!findDeletableTarget(query, nodeId);
+
+  const getParentId = (): string | null => {
+    if (!nodeId) return null;
+    try {
+      const node = query.node(nodeId).get();
+      return node?.data?.parent || null;
+    } catch {
+      return null;
+    }
+  };
+
+  const duplicate = () => {
+    if (!nodeId || nodeId === 'ROOT') return;
+    try {
+      const parentId = getParentId();
+      if (!parentId) return;
+
+      const tree = regenerateTreeIds(query.node(nodeId).toNodeTree());
+      actions.addNodeTree(tree, parentId);
+    } catch (e) {
+      console.error('Duplicate failed:', e);
+    }
+  };
+
+  const moveUp = () => {
+    if (!nodeId || nodeId === 'ROOT') return;
+    try {
+      const parentId = getParentId();
+      if (!parentId) return;
+      const parent = query.node(parentId).get();
+      const children = parent.data.nodes || [];
+      const idx = children.indexOf(nodeId);
+      if (idx > 0) {
+        actions.move(nodeId, parentId, idx - 1);
+      }
+    } catch (e) {
+      console.error('Move up failed:', e);
+    }
+  };
+
+  const moveDown = () => {
+    if (!nodeId || nodeId === 'ROOT') return;
+    try {
+      const parentId = getParentId();
+      if (!parentId) return;
+      const parent = query.node(parentId).get();
+      const children = parent.data.nodes || [];
+      const idx = children.indexOf(nodeId);
+      if (idx < children.length - 1) {
+        actions.move(nodeId, parentId, idx + 2);
+      }
+    } catch (e) {
+      console.error('Move down failed:', e);
+    }
+  };
+
+  const selectParent = () => {
+    if (!nodeId || nodeId === 'ROOT') return;
+    const parentId = getParentId();
+    if (parentId) {
+      actions.selectNode(parentId);
+    }
+  };
+
+  const deleteNode = () => {
+    const target = findDeletableTarget(query, nodeId);
+    if (!target) return;
+    try {
+      actions.delete(target);
+    } catch (e) {
+      console.error('Delete failed:', e);
+    }
+  };
+
+  return { moveUp, moveDown, duplicate, deleteNode, selectParent, canMoveUp, canMoveDown, canDelete };
+}

craft/src/hooks/useVisualViewport.ts

@@ -0,0 +1,55 @@
+import { useEffect, useState } from 'react';
+
+export interface VisualViewportInsets {
+  /** The visual viewport's current height (shrinks when the on-screen
+   *  keyboard opens). Falls back to `window.innerHeight` when
+   *  `visualViewport` isn't supported. */
+  height: number;
+  /** Extra inset a `position: fixed`, bottom-anchored element should add to
+   *  its own `bottom` offset to stay clear of the on-screen keyboard --
+   *  `window.innerHeight` minus the visual viewport's bottom edge (its
+   *  height + offsetTop). Zero whenever no keyboard is open, or
+   *  `visualViewport` isn't supported (a safe no-op fallback). */
+  keyboardInset: number;
+}
+
+const ZERO_INSETS: VisualViewportInsets = { height: 0, keyboardInset: 0 };
+
+function computeInsets(): VisualViewportInsets {
+  if (typeof window === 'undefined') return ZERO_INSETS;
+  const vv = window.visualViewport;
+  if (!vv) return { height: window.innerHeight, keyboardInset: 0 };
+  const keyboardInset = Math.max(0, window.innerHeight - (vv.height + vv.offsetTop));
+  return { height: vv.height, keyboardInset };
+}
+
+/**
+ * Tracks `window.visualViewport`'s height/offset (item 5, Phase B) so
+ * `BottomSheet` can stay clear of the on-screen keyboard. `position: fixed`
+ * elements are positioned against the LAYOUT viewport, which does NOT shrink
+ * when a mobile keyboard opens -- only the visual viewport does -- so a
+ * bottom-anchored sheet's inputs can otherwise end up hidden underneath the
+ * keyboard with no visual indication anything is wrong.
+ *
+ * Guards for browsers without `visualViewport` (older WebViews): falls back
+ * to `{ height: window.innerHeight, keyboardInset: 0 }`, i.e. a no-op, so
+ * the sheet just keeps its existing (keyboard-unaware) sizing there.
+ */
+export function useVisualViewportInsets(): VisualViewportInsets {
+  const [insets, setInsets] = useState<VisualViewportInsets>(computeInsets);
+
+  useEffect(() => {
+    if (typeof window === 'undefined' || !window.visualViewport) return;
+    const vv = window.visualViewport;
+    const handleChange = () => setInsets(computeInsets());
+    handleChange();
+    vv.addEventListener('resize', handleChange);
+    vv.addEventListener('scroll', handleChange);
+    return () => {
+      vv.removeEventListener('resize', handleChange);
+      vv.removeEventListener('scroll', handleChange);
+    };
+  }, []);
+
+  return insets;
+}

craft/src/panels/context-menu/ContextMenu.tsx

@@ -1,10 +1,10 @@
 import React, { useEffect, useCallback, useRef } from 'react';
 import { useEditor } from '@craftjs/core';
-import { findDeletableTarget } from '../../utils/craft-helpers';
 import { useSitesmithModal } from '../../state/SitesmithContext';
 import { buildSitesmithTarget } from '../../utils/sitesmith-target';
 import { regenerateTreeIds } from '../../utils/craft-tree';
 import { getClipboardNodeId, setClipboardNodeId } from '../../hooks/clipboard';
+import { useNodeActions } from '../../hooks/useNodeActions';
 
 interface ContextMenuProps {
   visible: boolean;
@@ -65,19 +65,16 @@ export const ContextMenu: React.FC<ContextMenuProps> = ({
     }
   }, [nodeId, query]);
 
-  const duplicate = useCallback(() => {
-    if (!nodeId || nodeId === 'ROOT') return;
-    try {
-      const parentId = getParentId();
-      if (!parentId) return;
+  // Shared move/duplicate/delete/select-parent logic (item 1, Phase B) --
+  // extracted into `useNodeActions` so the mobile selection toolbar drives
+  // the exact same behavior. Wrapped here purely to also `onClose()` the
+  // menu after each action, same as before the extraction.
+  const nodeActions = useNodeActions(nodeId);
 
-      const tree = regenerateTreeIds(query.node(nodeId).toNodeTree());
-      actions.addNodeTree(tree, parentId);
-    } catch (e) {
-      console.error('Duplicate failed:', e);
-    }
+  const duplicate = useCallback(() => {
+    nodeActions.duplicate();
     onClose();
-  }, [nodeId, actions, query, getParentId, onClose]);
+  }, [nodeActions, onClose]);
 
   const copyNode = useCallback(() => {
     if (!nodeId || nodeId === 'ROOT') return;
@@ -118,47 +115,19 @@ export const ContextMenu: React.FC<ContextMenuProps> = ({
   }, [nodeId, actions, query, onClose]);
 
   const moveUp = useCallback(() => {
-    if (!nodeId || nodeId === 'ROOT') return;
-    try {
-      const parentId = getParentId();
-      if (!parentId) return;
-      const parent = query.node(parentId).get();
-      const children = parent.data.nodes || [];
-      const idx = children.indexOf(nodeId);
-      if (idx > 0) {
-        actions.move(nodeId, parentId, idx - 1);
-      }
-    } catch (e) {
-      console.error('Move up failed:', e);
-    }
+    nodeActions.moveUp();
     onClose();
-  }, [nodeId, actions, query, getParentId, onClose]);
+  }, [nodeActions, onClose]);
 
   const moveDown = useCallback(() => {
-    if (!nodeId || nodeId === 'ROOT') return;
-    try {
-      const parentId = getParentId();
-      if (!parentId) return;
-      const parent = query.node(parentId).get();
-      const children = parent.data.nodes || [];
-      const idx = children.indexOf(nodeId);
-      if (idx < children.length - 1) {
-        actions.move(nodeId, parentId, idx + 2);
-      }
-    } catch (e) {
-      console.error('Move down failed:', e);
-    }
+    nodeActions.moveDown();
     onClose();
-  }, [nodeId, actions, query, getParentId, onClose]);
+  }, [nodeActions, onClose]);
 
   const selectParent = useCallback(() => {
-    if (!nodeId || nodeId === 'ROOT') return;
-    const parentId = getParentId();
-    if (parentId) {
-      actions.selectNode(parentId);
-    }
+    nodeActions.selectParent();
     onClose();
-  }, [nodeId, actions, getParentId, onClose]);
+  }, [nodeActions, onClose]);
 
   const askSitesmith = useCallback(() => {
     if (!nodeId || nodeId === 'ROOT') return;
@@ -172,18 +141,9 @@ export const ContextMenu: React.FC<ContextMenuProps> = ({
   }, [nodeId, query, openSitesmith, onClose]);
 
   const deleteNode = useCallback(() => {
-    const target = findDeletableTarget(query, nodeId);
-    if (!target) {
-      onClose();
-      return;
-    }
-    try {
-      actions.delete(target);
-    } catch (e) {
-      console.error('Delete failed:', e);
-    }
+    nodeActions.deleteNode();
     onClose();
-  }, [nodeId, actions, query, onClose]);
+  }, [nodeActions, onClose]);
 
   if (!visible) return null;
 

craft/src/panels/left/BlocksPanel.tsx

@@ -1,5 +1,7 @@
-import React, { useState } from 'react';
+import React, { useCallback, useState } from 'react';
 import { useEditor } from '@craftjs/core';
+import { useIsMobile } from '../../hooks/useIsMobile';
+import { useMobileChrome } from '../../state/MobileChromeContext';
 import { Container } from '../../components/layout/Container';
 import { Section } from '../../components/layout/Section';
 import { ColumnLayout } from '../../components/layout/ColumnLayout';
@@ -146,6 +148,8 @@ const categories: CategoryDef[] = [
 
 export const BlocksPanel: React.FC = () => {
   const { connectors, actions, query } = useEditor();
+  const isMobile = useIsMobile();
+  const { closeSheet } = useMobileChrome();
   const [collapsed, setCollapsed] = useState<Record<string, boolean>>(() => {
     const initial: Record<string, boolean> = {};
     categories.forEach((cat, index) => {
@@ -158,6 +162,101 @@ export const BlocksPanel: React.FC = () => {
     setCollapsed((prev) => ({ ...prev, [categoryId]: !prev[categoryId] }));
   };
 
+  /** Default insertion target when there's no usable selection to anchor
+   *  to: the first real Craft.js canvas in the document (falls back to
+   *  ROOT). Extracted from the pre-existing onDoubleClick handler so
+   *  tap-to-add (mobile, item 3) and double-click (desktop, unchanged) share
+   *  the exact same fallback. */
+  const findDefaultCanvasId = useCallback((): string => {
+    try {
+      const serialized = JSON.parse(query.serialize());
+      const nodeIds = Object.keys(serialized);
+      for (const id of nodeIds) {
+        if (serialized[id].isCanvas && id !== 'ROOT') return id;
+      }
+    } catch {
+      // Fall through to ROOT below.
+    }
+    return 'ROOT';
+  }, [query]);
+
+  /**
+   * Builds a fresh node tree for `block` and inserts it into the canvas,
+   * returning the new node's id (or null on failure). Shared by desktop's
+   * double-click (unchanged behavior/position: always appended to
+   * `findDefaultCanvasId()`) and mobile's tap-to-add (item 3), which instead
+   * prefers inserting as a sibling right after the current selection --
+   * `insertAfterSelection: true` only from the mobile tap handler below.
+   */
+  const addBlockNode = useCallback((block: BlockDef, insertAfterSelection: boolean): string | null => {
+    try {
+      const tree = query.parseReactElement(React.cloneElement(block.component)).toNodeTree();
+
+      let inserted = false;
+      if (insertAfterSelection) {
+        try {
+          const selectedIds = query.getEvent('selected').all();
+          const selectedId = selectedIds.length > 0 ? selectedIds[0] : null;
+          if (selectedId && selectedId !== 'ROOT') {
+            const selectedNode = query.node(selectedId).get();
+            const parentId = selectedNode?.data?.parent;
+            if (parentId) {
+              const parent = query.node(parentId).get();
+              const siblings: string[] = parent?.data?.nodes || [];
+              const idx = siblings.indexOf(selectedId);
+              if (idx !== -1) {
+                actions.addNodeTree(tree, parentId, idx + 1);
+                inserted = true;
+              }
+            }
+          }
+        } catch {
+          // Selection isn't a valid sibling target (e.g. lives in a
+          // linkedNodes slot) -- fall through to the default canvas below.
+        }
+      }
+
+      if (!inserted) {
+        actions.addNodeTree(tree, findDefaultCanvasId());
+      }
+
+      return tree.rootNodeId;
+    } catch (e) {
+      console.error('Failed to add block:', e);
+      return null;
+    }
+  }, [query, actions, findDefaultCanvasId]);
+
+  /**
+   * Mobile tap-to-add (item 3): a single tap on a block tile inserts it,
+   * closes the Blocks sheet, then selects the new node and scrolls it into
+   * view so the user immediately sees it (and gets the selection toolbar).
+   * The select/scroll step is deferred two animation frames past the
+   * `addNodeTree` call -- Craft.js's own state update (and thus the new
+   * node's real DOM element) lands asynchronously after this handler
+   * returns, so `query.node(id).get().dom` isn't populated yet if read
+   * synchronously here.
+   */
+  const handleTapToAdd = useCallback((block: BlockDef) => {
+    const newId = addBlockNode(block, true);
+    closeSheet();
+    if (!newId) return;
+    requestAnimationFrame(() => {
+      try {
+        actions.selectNode(newId);
+      } catch {
+        // Node may have failed to mount -- nothing to select.
+      }
+      requestAnimationFrame(() => {
+        try {
+          query.node(newId).get()?.dom?.scrollIntoView({ behavior: 'smooth', block: 'center' });
+        } catch {
+          // Best-effort scroll -- not fatal if the node/DOM isn't found.
+        }
+      });
+    });
+  }, [addBlockNode, closeSheet, actions, query]);
+
   return (
     <div>
       {categories.map((category) => {
@@ -178,24 +277,9 @@ export const BlocksPanel: React.FC = () => {
                     key={block.id}
                     className="block-item"
                     ref={(ref) => { if (ref) connectors.create(ref, block.component); }}
-                    onDoubleClick={() => {
-                      try {
-                        const serialized = JSON.parse(query.serialize());
-                        const nodeIds = Object.keys(serialized);
-                        let canvasId = 'ROOT';
-                        for (const nodeId of nodeIds) {
-                          if (serialized[nodeId].isCanvas && nodeId !== 'ROOT') {
-                            canvasId = nodeId;
-                            break;
-                          }
-                        }
-                        const tree = query.parseReactElement(React.cloneElement(block.component)).toNodeTree();
-                        actions.addNodeTree(tree, canvasId);
-                      } catch (e) {
-                        console.error('Failed to add block:', e);
-                      }
-                    }}
-                    title={`Drag or double-click to add ${block.label}`}
+                    onDoubleClick={() => addBlockNode(block, false)}
+                    onClick={isMobile ? () => handleTapToAdd(block) : undefined}
+                    title={isMobile ? `Tap to add ${block.label}` : `Drag or double-click to add ${block.label}`}
                   >
                     <i className={`fa ${block.icon} block-item-icon`} />
                     <span className="block-item-label">{block.label}</span>

craft/src/panels/left/LayersPanel.tsx

@@ -146,6 +146,7 @@ const LayerNode: React.FC<LayerNodeProps> = ({ nodeId, depth }) => {
         {...clickableProps(handleActivate)}
         onMouseEnter={handleMouseEnter}
         onMouseLeave={handleMouseLeave}
+        className="layer-node-row"
         style={{
           position: 'relative',
           display: 'flex',

craft/src/panels/mobile/BottomSheet.tsx

@@ -1,4 +1,5 @@
-import React, { useEffect } from 'react';
+import React, { useCallback, useEffect, useRef, useState } from 'react';
+import { useVisualViewportInsets } from '../../hooks/useVisualViewport';
 
 export interface BottomSheetProps {
   open: boolean;
@@ -7,6 +8,10 @@ export interface BottomSheetProps {
   children: React.ReactNode;
 }
 
+/** Vertical drag distance (px) past which releasing the handle/header
+ *  commits to closing the sheet, rather than snapping back open. */
+const SWIPE_DISMISS_THRESHOLD_PX = 80;
+
 /**
  * Mobile-only bottom sheet (Phase A). Slides up from the bottom of the
  * viewport to host one of the existing side-panel components
@@ -18,6 +23,22 @@ export interface BottomSheetProps {
  * dialog chrome) -- this is anchored to the bottom, sized to ~65dvh, and
  * has its own drag-handle affordance + internally scrollable body, all of
  * which Modal doesn't need for its centered use cases.
+ *
+ * Phase B adds two more deferred behaviors on top of Phase A's static sheet:
+ *  - **Swipe-to-dismiss**: a touchstart/move/end drag tracked on the handle
+ *    row + header (not the scrollable body, so it never fights a panel's own
+ *    vertical scroll) that follows the finger while dragging down and either
+ *    commits to `onClose()` past `SWIPE_DISMISS_THRESHOLD_PX` or snaps back
+ *    with a short transition otherwise.
+ *  - **On-screen-keyboard clearance**: `useVisualViewportInsets` reports how
+ *    much the visual viewport has shrunk from the bottom (i.e. the
+ *    keyboard's height); that's surfaced as a `--keyboard-inset` CSS custom
+ *    property (see editor.css) which both lifts the whole backdrop/sheet
+ *    clear of the keyboard AND caps the sheet's own max-height so it never
+ *    extends into the space the keyboard occupies. A `focusin` listener also
+ *    scrolls the newly-focused input into view once the keyboard has had a
+ *    moment to animate in, as a second line of defense for a field that's
+ *    still off-screen after the resize alone (e.g. deep in a long panel).
  */
 export const BottomSheet: React.FC<BottomSheetProps> = ({ open, onClose, title, children }) => {
   useEffect(() => {
@@ -35,6 +56,78 @@ export const BottomSheet: React.FC<BottomSheetProps> = ({ open, onClose, title,
     };
   }, [open, onClose]);
 
+  const { keyboardInset } = useVisualViewportInsets();
+
+  const bodyRef = useRef<HTMLDivElement>(null);
+  useEffect(() => {
+    if (!open) return;
+    const bodyEl = bodyRef.current;
+    if (!bodyEl) return;
+    const handleFocusIn = (e: FocusEvent) => {
+      const target = e.target as HTMLElement | null;
+      if (!target) return;
+      const tag = target.tagName;
+      if (tag === 'INPUT' || tag === 'TEXTAREA' || tag === 'SELECT' || target.isContentEditable) {
+        // Give the on-screen keyboard a moment to finish animating in
+        // before scrolling -- doing it immediately measures the pre-keyboard
+        // layout and can undershoot.
+        window.setTimeout(() => {
+          target.scrollIntoView({ block: 'center', behavior: 'smooth' });
+        }, 300);
+      }
+    };
+    bodyEl.addEventListener('focusin', handleFocusIn);
+    return () => bodyEl.removeEventListener('focusin', handleFocusIn);
+  }, [open]);
+
+  // Swipe-to-dismiss: tracked only on the handle row + header (never the
+  // scrollable `.mobile-sheet-body`, which needs its own vertical touch
+  // scrolling to keep working unimpeded).
+  //
+  // The authoritative drag distance lives in a REF (`dragOffsetRef`),
+  // updated synchronously and imperatively on every touchmove -- NOT solely
+  // in the `dragOffset` state used for rendering the drag transform. Two
+  // touchmoves can fire back-to-back inside the same synchronous event
+  // dispatch (e.g. a fast real swipe, or synthetic touch events fired
+  // without a yield between them), and React batches their `setDragOffset`
+  // calls into a single pending update that hasn't committed yet by the
+  // time `touchend` runs in that same tick -- reading the `dragOffset`
+  // STATE value directly in `handleTouchEnd` would then see a stale
+  // (pre-drag) value and wrongly decide the swipe didn't clear the
+  // threshold. The ref sidesteps that entirely (plain synchronous mutation,
+  // no batching). Relatedly, `onClose()` mutates an ANCESTOR component's
+  // state (MobileChromeContext's `closeSheet`) -- it must be called as a
+  // plain statement in the event handler, never from inside a `setState`
+  // functional updater (that runs during this component's own render phase
+  // and trips React's "Cannot update a component while rendering a
+  // different component" warning).
+  const dragStartYRef = useRef<number | null>(null);
+  const dragOffsetRef = useRef(0);
+  const [dragOffset, setDragOffset] = useState(0);
+
+  const handleTouchStart = useCallback((e: React.TouchEvent) => {
+    if (e.touches.length !== 1) return;
+    dragStartYRef.current = e.touches[0].clientY;
+  }, []);
+
+  const handleTouchMove = useCallback((e: React.TouchEvent) => {
+    if (dragStartYRef.current === null) return;
+    const delta = e.touches[0].clientY - dragStartYRef.current;
+    // Only follow downward drags -- dragging up shouldn't do anything (the
+    // sheet is already fully open; there's no "expand further" state).
+    const next = Math.max(0, delta);
+    dragOffsetRef.current = next;
+    setDragOffset(next);
+  }, []);
+
+  const handleTouchEnd = useCallback(() => {
+    dragStartYRef.current = null;
+    const finalOffset = dragOffsetRef.current;
+    dragOffsetRef.current = 0;
+    setDragOffset(0);
+    if (finalOffset > SWIPE_DISMISS_THRESHOLD_PX) onClose();
+  }, [onClose]);
+
   if (!open) return null;
 
   return (
@@ -43,16 +136,37 @@ export const BottomSheet: React.FC<BottomSheetProps> = ({ open, onClose, title,
       onClick={(e) => {
         if (e.target === e.currentTarget) onClose();
       }}
+      style={{ ['--keyboard-inset' as any]: `${keyboardInset}px` }}
     >
       {/* Deliberately NOT aria-modal: the tab bar stays reachable/operable
           while a sheet is open (tapping another tab swaps sheets directly),
           so the rest of the screen must not be marked inert to assistive
           tech the way a true modal dialog would be. */}
-      <div className="mobile-sheet" role="dialog" aria-label={title}>
-        <div className="mobile-sheet-handle-row">
+      <div
+        className="mobile-sheet"
+        role="dialog"
+        aria-label={title}
+        style={{
+          transform: dragOffset ? `translateY(${dragOffset}px)` : undefined,
+          transition: dragOffset ? 'none' : 'transform 0.2s ease',
+        }}
+      >
+        <div
+          className="mobile-sheet-handle-row"
+          onTouchStart={handleTouchStart}
+          onTouchMove={handleTouchMove}
+          onTouchEnd={handleTouchEnd}
+          onTouchCancel={handleTouchEnd}
+        >
           <span className="mobile-sheet-handle" aria-hidden="true" />
         </div>
-        <div className="mobile-sheet-header">
+        <div
+          className="mobile-sheet-header"
+          onTouchStart={handleTouchStart}
+          onTouchMove={handleTouchMove}
+          onTouchEnd={handleTouchEnd}
+          onTouchCancel={handleTouchEnd}
+        >
           <span className="mobile-sheet-title">{title}</span>
           <button
             type="button"
@@ -63,7 +177,7 @@ export const BottomSheet: React.FC<BottomSheetProps> = ({ open, onClose, title,
             <i className="fa fa-times" aria-hidden="true" />
           </button>
         </div>
-        <div className="mobile-sheet-body">{children}</div>
+        <div className="mobile-sheet-body" ref={bodyRef}>{children}</div>
       </div>
     </div>
   );

craft/src/panels/mobile/MobileSelectionToolbar.tsx

@@ -0,0 +1,174 @@
+import React, { useCallback, useEffect, useRef, useState } from 'react';
+import { useEditor } from '@craftjs/core';
+import { useNodeActions } from '../../hooks/useNodeActions';
+import { useMobileChrome } from '../../state/MobileChromeContext';
+
+/**
+ * Phase B mobile selection toolbar -- the on-canvas action bar that makes a
+ * tap-selected node actually EDITABLE by touch (reorder/duplicate/delete/
+ * select-parent/edit-styles), mirroring the desktop right-click ContextMenu.
+ * Both share the exact same behavior via `useNodeActions` (item 1).
+ *
+ * Mounted ONCE (in `EditorShell`'s mobile branch), reading the current
+ * selection from `useEditor` directly -- NOT per-node -- and positioned
+ * bottom-fixed just above the tab bar (simplest, robust; a node-anchored
+ * floating toolbar would have to constantly reposition as the canvas
+ * scrolls, and risks being clipped at the viewport edge for a node near the
+ * top or bottom of a tall page). This is a deliberate design call: see the
+ * report for the alternative (floating over the node) that was passed over.
+ *
+ * Hidden whenever a bottom sheet is open (`activeSheet !== null`) -- the
+ * sheet supersedes it, and the two must never visually stack.
+ *
+ * Delete is a two-tap in-app confirm (tap once -> the button becomes
+ * "Confirm?" for a few seconds; tap again within that window commits the
+ * delete; selecting something else cancels it) rather than a native
+ * `confirm()`, matching the project's no-native-dialogs rule.
+ */
+const DELETE_CONFIRM_TIMEOUT_MS = 3000;
+
+export const MobileSelectionToolbar: React.FC = () => {
+  const { activeSheet, openSheet } = useMobileChrome();
+  const { selectedId } = useEditor((state) => {
+    const selected = state.events.selected;
+    const id = selected && selected.size > 0 ? (Array.from(selected)[0] as string) : null;
+    return { selectedId: id && id !== 'ROOT' ? id : null };
+  });
+
+  const nodeActions = useNodeActions(selectedId);
+  const [confirmingDelete, setConfirmingDelete] = useState(false);
+  const confirmTimeoutRef = useRef<ReturnType<typeof setTimeout> | null>(null);
+
+  // `useNodeActions` computes canMoveUp/canMoveDown/canDelete synchronously
+  // from a live (never-cached) Craft.js query -- see that hook's doc comment
+  // for why it deliberately does NOT hold its own store subscription to force
+  // a refresh. Moving/duplicating/deleting via THIS toolbar changes the
+  // selected node's position/siblings WITHOUT changing `selectedId` itself
+  // (the node stays selected), so nothing else would otherwise trigger a
+  // re-render of this component to pick up the new boundary flags after,
+  // say, tapping "Move Up" until the node reaches the top. Bumping a plain
+  // local tick from these buttons' own click handlers -- an ordinary,
+  // locally-owned re-render -- covers exactly that, without the broader
+  // store-wide subscription that was found to trip React's "setState while
+  // rendering a different component" warning whenever some unrelated
+  // container mounts (see useNodeActions.ts).
+  const [, forceRefresh] = useState(0);
+  const bumpTick = useCallback(() => forceRefresh((n) => n + 1), []);
+
+  const clearConfirmTimeout = useCallback(() => {
+    if (confirmTimeoutRef.current) {
+      clearTimeout(confirmTimeoutRef.current);
+      confirmTimeoutRef.current = null;
+    }
+  }, []);
+
+  // Reset the two-tap delete confirmation whenever the selection changes
+  // (including being cleared) so a stale "Confirm?" state never lingers onto
+  // a different node.
+  const prevSelectedRef = useRef(selectedId);
+  useEffect(() => {
+    if (prevSelectedRef.current !== selectedId) {
+      prevSelectedRef.current = selectedId;
+      clearConfirmTimeout();
+      setConfirmingDelete(false);
+    }
+  }, [selectedId, clearConfirmTimeout]);
+
+  useEffect(() => clearConfirmTimeout, [clearConfirmTimeout]);
+
+  const handleDeleteTap = useCallback(() => {
+    if (confirmingDelete) {
+      clearConfirmTimeout();
+      setConfirmingDelete(false);
+      nodeActions.deleteNode();
+      bumpTick();
+      return;
+    }
+    setConfirmingDelete(true);
+    clearConfirmTimeout();
+    confirmTimeoutRef.current = setTimeout(() => setConfirmingDelete(false), DELETE_CONFIRM_TIMEOUT_MS);
+  }, [confirmingDelete, clearConfirmTimeout, nodeActions, bumpTick]);
+
+  const handleEditStyles = useCallback(() => {
+    openSheet('styles');
+  }, [openSheet]);
+
+  const handleMoveUp = useCallback(() => {
+    nodeActions.moveUp();
+    bumpTick();
+  }, [nodeActions, bumpTick]);
+
+  const handleMoveDown = useCallback(() => {
+    nodeActions.moveDown();
+    bumpTick();
+  }, [nodeActions, bumpTick]);
+
+  const handleDuplicate = useCallback(() => {
+    nodeActions.duplicate();
+    bumpTick();
+  }, [nodeActions, bumpTick]);
+
+  if (!selectedId || activeSheet !== null) return null;
+
+  return (
+    <div className="mobile-selection-toolbar" role="toolbar" aria-label="Selected element actions">
+      <button
+        type="button"
+        className="mobile-selection-toolbar-btn"
+        onClick={handleMoveUp}
+        disabled={!nodeActions.canMoveUp}
+        aria-label="Move up"
+      >
+        <i className="fa fa-arrow-up" aria-hidden="true" />
+        <span>Up</span>
+      </button>
+      <button
+        type="button"
+        className="mobile-selection-toolbar-btn"
+        onClick={handleMoveDown}
+        disabled={!nodeActions.canMoveDown}
+        aria-label="Move down"
+      >
+        <i className="fa fa-arrow-down" aria-hidden="true" />
+        <span>Down</span>
+      </button>
+      <button
+        type="button"
+        className="mobile-selection-toolbar-btn"
+        onClick={handleDuplicate}
+        aria-label="Duplicate"
+      >
+        <i className="fa fa-clone" aria-hidden="true" />
+        <span>Copy</span>
+      </button>
+      <button
+        type="button"
+        className="mobile-selection-toolbar-btn"
+        onClick={nodeActions.selectParent}
+        aria-label="Select parent"
+      >
+        <i className="fa fa-level-up" aria-hidden="true" />
+        <span>Parent</span>
+      </button>
+      <button
+        type="button"
+        className="mobile-selection-toolbar-btn"
+        onClick={handleEditStyles}
+        aria-label="Edit styles"
+      >
+        <i className="fa fa-paint-brush" aria-hidden="true" />
+        <span>Style</span>
+      </button>
+      <button
+        type="button"
+        className={`mobile-selection-toolbar-btn danger${confirmingDelete ? ' confirming' : ''}`}
+        onClick={handleDeleteTap}
+        disabled={!nodeActions.canDelete}
+        aria-label={confirmingDelete ? 'Tap again to confirm delete' : 'Delete'}
+      >
+        <i className="fa fa-trash" aria-hidden="true" />
+        <span>{confirmingDelete ? 'Confirm?' : 'Delete'}</span>
+      </button>
+    </div>
+  );
+};

craft/src/panels/topbar/HeadCodeModal.tsx

@@ -1,4 +1,5 @@
 import React from 'react';
+import { createPortal } from 'react-dom';
 import { useSiteDesign } from '../../state/SiteDesignContext';
 import { Modal } from '../../ui/Modal';
 
@@ -10,7 +11,15 @@ interface HeadCodeModalProps {
 export const HeadCodeModal: React.FC<HeadCodeModalProps> = ({ open, onClose }) => {
   const { design, updateDesign } = useSiteDesign();
 
-  return (
+  // Mobile-A2/Phase B: portaled to `document.body` -- same fix TemplateModal
+  // already got (see its comment). TopBar.tsx mounts this modal as a child
+  // of `.topbar`, which (as a flex item with its own z-index) forms its own
+  // stacking context; that trapped the modal's fixed-position backdrop
+  // underneath the mobile tab bar (z-index: var(--z-tabbar)) no matter how
+  // high the modal's own z-index was set. Portaling escapes that stacking
+  // context entirely so `--z-modal` (editor.css) is evaluated at the
+  // document root, same as TemplateModal/SitesmithModal.
+  return createPortal(
     <Modal open={open} onClose={onClose}>
       <div style={modalStyle} onClick={(e) => e.stopPropagation()}>
         {/* Header */}
@@ -82,7 +91,8 @@ export const HeadCodeModal: React.FC<HeadCodeModalProps> = ({ open, onClose }) =
           </button>
         </div>
       </div>
-    </Modal>
+    </Modal>,
+    document.body,
   );
 };
 

craft/src/styles/editor.css

@@ -1626,6 +1626,65 @@ body {
     color: var(--color-accent);
   }
 
+  /* --------------------------------------------------------------------
+     Mobile selection toolbar (MobileSelectionToolbar.tsx, Phase B item 2)
+     Bottom-fixed just above the tab bar -- simplest, robust positioning
+     that never has to track a scrolling/resizing node's DOM rect. Sits at
+     --z-selection-toolbar (600), above the tab bar (500) and sheet backdrop
+     (400) so it's never occluded by either, but well below --z-modal
+     (5000). Hidden entirely (component returns null) whenever a sheet is
+     open, so it never has to fight the sheet for the same screen space.
+     -------------------------------------------------------------------- */
+  .mobile-selection-toolbar {
+    position: fixed;
+    left: 0;
+    right: 0;
+    bottom: calc(var(--mobile-tabbar-height) + env(safe-area-inset-bottom, 0px));
+    z-index: var(--z-selection-toolbar);
+    display: flex;
+    background: var(--color-bg-elevated);
+    border-top: 1px solid var(--color-border);
+    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.35);
+    padding: 4px calc(2px + env(safe-area-inset-right, 0px)) 4px calc(2px + env(safe-area-inset-left, 0px));
+  }
+
+  .mobile-selection-toolbar-btn {
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    gap: 2px;
+    min-height: 44px;
+    padding: 4px 2px;
+    font-size: 9px;
+    font-weight: 600;
+    line-height: 1;
+    color: var(--color-text);
+    background: transparent;
+    border: none;
+    border-radius: var(--radius-md);
+    cursor: pointer;
+    touch-action: manipulation;
+  }
+
+  .mobile-selection-toolbar-btn i {
+    font-size: 15px;
+  }
+
+  .mobile-selection-toolbar-btn:disabled {
+    color: var(--color-text-dim);
+    opacity: 0.4;
+  }
+
+  .mobile-selection-toolbar-btn.danger {
+    color: var(--color-danger);
+  }
+
+  .mobile-selection-toolbar-btn.danger.confirming {
+    background: rgba(239, 68, 68, 0.15);
+  }
+
   /* --------------------------------------------------------------------
      Bottom sheet (BottomSheet.tsx)
      -------------------------------------------------------------------- */
@@ -1637,8 +1696,13 @@ body {
     /* Stop above the bottom tab bar (rather than a full-viewport `inset: 0`)
        so the tab bar is never covered/blocked by the backdrop -- tapping a
        different tab while a sheet is open swaps sheets directly instead of
-       being swallowed by the overlay sitting on top of it. */
-    bottom: calc(var(--mobile-tabbar-height) + env(safe-area-inset-bottom, 0px));
+       being swallowed by the overlay sitting on top of it.
+       `--keyboard-inset` (item 5, Phase B) is set inline by BottomSheet.tsx
+       from `useVisualViewportInsets` -- 0px when no on-screen keyboard is
+       open (the default below is the no-JS/unsupported-browser fallback),
+       otherwise the keyboard's height, so the whole sheet lifts clear of it
+       instead of the keyboard covering its lower portion. */
+    bottom: calc(var(--mobile-tabbar-height) + env(safe-area-inset-bottom, 0px) + var(--keyboard-inset, 0px));
     background: rgba(0, 0, 0, 0.5);
     z-index: var(--z-sheet-backdrop);
     display: flex;
@@ -1647,8 +1711,12 @@ body {
 
   .mobile-sheet {
     width: 100%;
-    max-height: 65vh;
-    max-height: 65dvh;
+    /* Capped a second time by the keyboard inset so the sheet's own
+       max-height shrinks along with the lifted backdrop -- without this the
+       sheet could still try to be 65dvh tall from its new (higher) bottom
+       edge and overflow off the top of the screen. */
+    max-height: calc(65vh - var(--keyboard-inset, 0px));
+    max-height: calc(65dvh - var(--keyboard-inset, 0px));
     background: var(--color-bg-surface);
     border-top-left-radius: 16px;
     border-top-right-radius: 16px;
@@ -1664,6 +1732,10 @@ body {
     justify-content: center;
     padding: 8px 0 4px;
     flex-shrink: 0;
+    /* Swipe-to-dismiss (item 4, Phase B) tracks its own touchmove here --
+       `none` stops the browser's native scroll/rubber-band gesture from
+       competing with it. */
+    touch-action: none;
   }
 
   .mobile-sheet-handle {
@@ -1680,6 +1752,8 @@ body {
     padding: 4px 12px 10px 16px;
     border-bottom: 1px solid var(--color-border);
     flex-shrink: 0;
+    /* Swipe-to-dismiss (item 4, Phase B) -- see .mobile-sheet-handle-row. */
+    touch-action: none;
   }
 
   .mobile-sheet-title {
@@ -1749,6 +1823,15 @@ body {
     height: 40px;
   }
 
+  /* Layers panel rows (item 4) -- the reliable fallback selection path when
+     a node is hard to hit precisely on the canvas by touch. Bumped to the
+     44px touch-target minimum; tapping a row already selects (LayerNode's
+     `handleActivate`), unchanged. */
+  .mobile-sheet-body .layer-node-row {
+    min-height: 44px;
+    touch-action: manipulation;
+  }
+
   /* --------------------------------------------------------------------
      Templates modal: category tabs stay horizontally scrollable and never
      shrink below a comfortable touch target; close button enlarged to the

craft/src/utils/craft-tree.test.ts

@@ -147,6 +147,37 @@ describe('regenerateTreeIds', () => {
 
     expect(input.nodes['root-1'].data.props).toEqual({ alignment: 'left' });
   });
+
+  // Regression test (found via real-browser Playwright touch verification,
+  // Phase B): a LIVE Craft.js node's `data.type` is the actual component
+  // function reference (not the `{resolvedName}` string wrapper used only
+  // in SERIALIZED state) -- `query.node(id).toNodeTree()` returns nodes
+  // shaped exactly like this. The previous implementation ran
+  // `structuredClone(oldNode.data)` on the WHOLE data object, which throws
+  // `DataCloneError` the instant `data.type` is a function, silently
+  // breaking Duplicate (ContextMenu.tsx / useNodeActions.ts) and Ctrl+V
+  // Paste (useKeyboardShortcuts.ts) for every real node in the app --
+  // masked by every other test in this suite using a plain string `type`
+  // ('div'), and by unit tests elsewhere that mock `@craftjs/core` entirely
+  // (so `toNodeTree()` never actually returns a function there).
+  test('does not throw when data.type is a live component function reference', () => {
+    const ButtonLikeComponent = (props: { text?: string }) => props.text;
+    const input = makeTree();
+    input.nodes['root-1'].data.type = ButtonLikeComponent as unknown as Node['data']['type'];
+    input.nodes['root-1'].data.props = { text: 'Click Me' };
+
+    expect(() => regenerateTreeIds(input)).not.toThrow();
+
+    const output = regenerateTreeIds(input);
+    const outputRoot = output.nodes[output.rootNodeId];
+    // The component reference itself is preserved (shared, not cloned --
+    // it's a stable reference, not mutable data).
+    expect(outputRoot.data.type).toBe(ButtonLikeComponent);
+    // Props are still genuinely deep-cloned (the actual bug fix's point).
+    expect(outputRoot.data.props).toEqual({ text: 'Click Me' });
+    (outputRoot.data.props as { text: string }).text = 'changed';
+    expect(input.nodes['root-1'].data.props).toEqual({ text: 'Click Me' });
+  });
 });
 
 describe('flattenTreeForCraft', () => {

craft/src/utils/craft-tree.ts

@@ -366,12 +366,27 @@ export function regenerateTreeIds(tree: NodeTree): NodeTree {
       newLinkedNodes[slot] = remapId(linkedId);
     }
 
-    // Deep-clone data so mutable sub-objects (props, custom, etc.) are never
-    // shared by reference between the original node and its regenerated
-    // copy. Craft.js's setProp mutates data.props in place, so a shallow
-    // copy here would let edits to the duplicate silently corrupt the
-    // original.
-    const clonedData = structuredClone(oldNode.data);
+    // Deep-clone only the mutable sub-objects (props, custom) so they're
+    // never shared by reference between the original node and its
+    // regenerated copy -- Craft.js's setProp mutates data.props in place, so
+    // a shallow copy here would let edits to the duplicate silently corrupt
+    // the original.
+    //
+    // Deliberately NOT `structuredClone(oldNode.data)` as a whole: for a
+    // LIVE Craft.js node (as opposed to a plain serialized one), `data.type`
+    // is the actual component function/class reference (see the long
+    // comment on `buildNodeTree` above) -- `structuredClone` cannot clone a
+    // function and throws `DataCloneError`, which silently broke EVERY
+    // duplicate/paste in the real app (masked in unit tests that mock
+    // `@craftjs/core` with plain-data fake nodes, so `toNodeTree()` never
+    // actually returns a function there). `type` is a stable reference that
+    // both the original and the duplicate should point at unchanged, so it
+    // never needed cloning in the first place.
+    const clonedData = {
+      ...oldNode.data,
+      props: structuredClone(oldNode.data.props),
+      custom: structuredClone(oldNode.data.custom),
+    };
 
     const newNode: Node = {
       ...oldNode,