fix(editor): improve guided manipulation and snap affordances

packages/editor/src/components/editor-2d/renderers/floorplan-registry-layer.tsx

@@ -3,12 +3,14 @@
 import {
   type AnyNode,
   type AnyNodeId,
+  createSceneApi,
   type FloorplanAffordancePoint,
   type FloorplanAffordanceSession,
   type FloorplanGeometry,
   type FloorplanPalette,
   type FloorplanPoint,
   type GeometryContext,
+  isRegistryMovable,
   kindsWithFloorplanScope,
   nodeRegistry,
   pauseSceneHistory,
@@ -29,8 +31,15 @@ import {
   useRef,
   useState,
 } from 'react'
+import {
+  canDirectRotateNode,
+  resolveDirectRotationDragDelta,
+  resolveDirectRotationPatch,
+} from '../../../lib/direct-manipulation'
+import { createEditorApi } from '../../../lib/editor-api'
 import { sfxEmitter } from '../../../lib/sfx-bus'
 import { clearSurfacePlanSnapFeedback } from '../../../lib/surface-plan-snap'
+import useDirectManipulationFeedback from '../../../store/use-direct-manipulation-feedback'
 import useEditor from '../../../store/use-editor'
 import { suppressBoxSelectForPointer } from '../../tools/select/box-select-state'
 import { useFloorplanRender } from '../floorplan-render-context'
@@ -71,6 +80,9 @@ const ENDPOINT_HIT_STROKE_WIDTH_PX = 18
 const ENDPOINT_HOVER_GLOW_STROKE_WIDTH_PX = 16
 const ENDPOINT_HOVER_RING_STROKE_WIDTH_PX = 7
 const HOVER_TRANSITION = 'opacity 180ms cubic-bezier(0.2, 0, 0, 1)'
+const DIRECT_DRAG_THRESHOLD_PX = 4
+const DIRECT_ROTATE_EPSILON = 1e-6
+const DIRECT_ROTATE_RADIANS_PER_PIXEL = Math.PI / 180
 
 /**
  * Snapshot of node fields captured at drag-start, used by the single-undo
@@ -131,6 +143,7 @@ export const FloorplanRegistryLayer = memo(function FloorplanRegistryLayer() {
   const selectedIds = useViewer((s) => s.selection.selectedIds)
   const previewSelectedIds = useViewer((s) => s.previewSelectedIds)
   const hoveredId = useViewer((s) => s.hoveredId)
+  const activeRotateNodeId = useDirectManipulationFeedback((s) => s.activeRotateNodeId)
   const setHoveredId = useViewer((s) => s.setHoveredId)
   const setSelection = useViewer((s) => s.setSelection)
   const nodes = useScene((s) => s.nodes)
@@ -227,11 +240,16 @@ export const FloorplanRegistryLayer = memo(function FloorplanRegistryLayer() {
   const [activeDragId, setActiveDragId] = useState<string | null>(null)
   const [rotationOverlay, setRotationOverlay] = useState<RotationOverlayState | null>(null)
 
-  const handleSelect = useCallback(
-    (id: AnyNodeId, event: React.PointerEvent<SVGGElement>) => {
-      if (event.button !== 0) return
-      event.stopPropagation()
-      setSelection({ selectedIds: [id] })
+  const applyEntrySelection = useCallback(
+    (id: AnyNodeId, shouldToggle: boolean) => {
+      const currentSelectedIds = useViewer.getState().selection.selectedIds
+      setSelection({
+        selectedIds: shouldToggle
+          ? currentSelectedIds.includes(id)
+            ? currentSelectedIds.filter((selectedId) => selectedId !== id)
+            : [...currentSelectedIds, id]
+          : [id],
+      })
       // Setting selection re-renders the entry — the overlay pass mounts
       // (endpoint handles, etc.), reshuffling DOM under the cursor between
       // pointerdown and click. If the click target ends up on the SVG
@@ -240,21 +258,200 @@ export const FloorplanRegistryLayer = memo(function FloorplanRegistryLayer() {
       // selection we just set. Swallow the next click globally to break
       // that race; the listener removes itself after firing (or after a
       // safety timeout if no click follows).
-      const swallowClick = (ev: Event) => {
-        ev.stopPropagation()
-        ev.preventDefault()
-        window.removeEventListener('click', swallowClick, true)
-      }
-      window.addEventListener('click', swallowClick, true)
-      setTimeout(() => window.removeEventListener('click', swallowClick, true), 200)
+      swallowNextClick(200)
     },
     [setSelection],
   )
 
+  const handleSelect = useCallback(
+    (id: AnyNodeId, event: React.PointerEvent<SVGGElement>) => {
+      if (event.button !== 0) return
+      event.stopPropagation()
+      applyEntrySelection(id, event.metaKey || event.ctrlKey || event.shiftKey)
+    },
+    [applyEntrySelection],
+  )
+
   const handleClickStop = useCallback((event: React.MouseEvent<SVGGElement>) => {
     event.stopPropagation()
   }, [])
 
+  const startDirectMoveDrag = useCallback(
+    (id: AnyNodeId, event: ReactPointerEvent<SVGGElement>): boolean => {
+      if (event.button !== 0 || !(event.metaKey || event.ctrlKey)) return false
+
+      const node = useScene.getState().nodes[id]
+      if (!node || !isRegistryMovable(node.type)) return false
+      if (!useViewer.getState().selection.selectedIds.includes(id)) return false
+
+      event.preventDefault()
+      event.stopPropagation()
+
+      const startX = event.clientX
+      const startY = event.clientY
+      const pointerId = event.pointerId
+      let engaged = false
+
+      const cleanup = () => {
+        window.removeEventListener('pointermove', onMove)
+        window.removeEventListener('pointerup', onEnd)
+        window.removeEventListener('pointercancel', onEnd)
+        if (engaged) {
+          useViewer.getState().setInputDragging(false)
+        }
+      }
+
+      const onMove = (moveEvent: PointerEvent) => {
+        if (moveEvent.pointerId !== pointerId) return
+        if (engaged) return
+        const distance = Math.hypot(moveEvent.clientX - startX, moveEvent.clientY - startY)
+        if (distance < DIRECT_DRAG_THRESHOLD_PX) return
+
+        engaged = true
+        useViewer.getState().setInputDragging(true)
+        swallowNextClick(300)
+        createEditorApi().engageMoveDrag(node)
+
+        requestAnimationFrame(() => {
+          window.dispatchEvent(
+            new PointerEvent('pointermove', {
+              altKey: moveEvent.altKey,
+              bubbles: true,
+              buttons: moveEvent.buttons,
+              clientX: moveEvent.clientX,
+              clientY: moveEvent.clientY,
+              ctrlKey: moveEvent.ctrlKey,
+              metaKey: moveEvent.metaKey,
+              pointerId,
+              pointerType: moveEvent.pointerType,
+              shiftKey: moveEvent.shiftKey,
+            }),
+          )
+        })
+      }
+
+      const onEnd = (endEvent: PointerEvent) => {
+        if (endEvent.pointerId !== pointerId) return
+        cleanup()
+        if (!engaged) {
+          applyEntrySelection(id, true)
+        }
+      }
+
+      window.addEventListener('pointermove', onMove)
+      window.addEventListener('pointerup', onEnd)
+      window.addEventListener('pointercancel', onEnd)
+      return true
+    },
+    [applyEntrySelection],
+  )
+
+  const startDirectRotateDrag = useCallback(
+    (id: AnyNodeId, event: ReactPointerEvent<SVGGElement>): boolean => {
+      if (event.button !== 2 || !(event.metaKey || event.ctrlKey)) return false
+
+      const node = useScene.getState().nodes[id]
+      if (!node || !canDirectRotateNode(node)) return false
+      const selectedIds = useViewer.getState().selection.selectedIds
+      if (!selectedIds.includes(id)) return false
+      event.preventDefault()
+      event.stopPropagation()
+
+      const nodeId = node.id as AnyNodeId
+      const pointerId = event.pointerId
+      const startX = event.clientX
+      const sceneApi = createSceneApi(useScene)
+      let lastPatch: Partial<AnyNode> | null = null
+
+      const applyDelta = (pointerEvent: PointerEvent | ReactPointerEvent<SVGGElement>) => {
+        const delta = resolveDirectRotationDragDelta(
+          startX,
+          pointerEvent.clientX,
+          DIRECT_ROTATE_RADIANS_PER_PIXEL,
+          pointerEvent.shiftKey,
+        )
+        if (Math.abs(delta) < DIRECT_ROTATE_EPSILON) {
+          lastPatch = null
+          useLiveNodeOverrides.getState().clear(nodeId)
+          useScene.getState().markDirty(nodeId)
+          return
+        }
+        const patch = resolveDirectRotationPatch(node, delta, sceneApi)
+        if (!patch) return
+        lastPatch = patch
+        useLiveNodeOverrides.getState().set(nodeId, patch as Record<string, unknown>)
+        useScene.getState().markDirty(nodeId)
+      }
+
+      const cleanup = () => {
+        window.removeEventListener('pointermove', onMove, true)
+        window.removeEventListener('pointerup', onUp, true)
+        window.removeEventListener('pointercancel', onCancel, true)
+        window.removeEventListener('contextmenu', preventContextMenu, true)
+        useLiveNodeOverrides.getState().clear(nodeId)
+        useScene.getState().markDirty(nodeId)
+        resumeSceneHistory(useScene)
+        useDirectManipulationFeedback.getState().clearActiveRotateNodeId(nodeId)
+        useViewer.getState().setInputDragging(false)
+        if (document.body.style.cursor === 'ew-resize') {
+          document.body.style.cursor = ''
+        }
+      }
+
+      const onMove = (moveEvent: PointerEvent) => {
+        if (moveEvent.pointerId !== pointerId) return
+        moveEvent.preventDefault()
+        moveEvent.stopPropagation()
+        applyDelta(moveEvent)
+      }
+
+      const onUp = (upEvent: PointerEvent) => {
+        if (upEvent.pointerId !== pointerId) return
+        upEvent.preventDefault()
+        upEvent.stopPropagation()
+        swallowNextClick(300)
+        if (lastPatch) {
+          sceneApi.update(nodeId, lastPatch)
+          sfxEmitter.emit('sfx:item-place')
+        }
+        cleanup()
+      }
+
+      const onCancel = (cancelEvent: PointerEvent) => {
+        if (cancelEvent.pointerId !== pointerId) return
+        cleanup()
+      }
+
+      const preventContextMenu = (contextEvent: Event) => {
+        contextEvent.preventDefault()
+        contextEvent.stopPropagation()
+      }
+
+      pauseSceneHistory(useScene)
+      useViewer.getState().setInputDragging(true)
+      useDirectManipulationFeedback.getState().setActiveRotateNodeId(nodeId)
+      document.body.style.cursor = 'ew-resize'
+      sfxEmitter.emit('sfx:item-pick')
+      applyDelta(event)
+
+      window.addEventListener('pointermove', onMove, true)
+      window.addEventListener('pointerup', onUp, true)
+      window.addEventListener('pointercancel', onCancel, true)
+      window.addEventListener('contextmenu', preventContextMenu, true)
+      return true
+    },
+    [],
+  )
+
+  const handleEntryPointerDown = useCallback(
+    (id: AnyNodeId, event: ReactPointerEvent<SVGGElement>) => {
+      if (startDirectMoveDrag(id, event)) return
+      if (startDirectRotateDrag(id, event)) return
+      handleSelect(id, event)
+    },
+    [handleSelect, startDirectMoveDrag, startDirectRotateDrag],
+  )
+
   // Build the geometry list. `viewState` flows into ctx so kinds can
   // theme their output and conditionally emit selection chrome.
   //
@@ -729,7 +926,7 @@ export const FloorplanRegistryLayer = memo(function FloorplanRegistryLayer() {
       onPointerDown={
         isOpeningPlacementActive || isMarqueeSelectionActive
           ? undefined
-          : (e) => handleSelect(id, e)
+          : (e) => handleEntryPointerDown(id, e)
       }
       // Mirror the sidebar tree nodes' hover wiring — `useViewer.
       // hoveredId` drives the highlight halo in 3D as well as the
@@ -749,6 +946,7 @@ export const FloorplanRegistryLayer = memo(function FloorplanRegistryLayer() {
     >
       <InteractiveGeometry
         activeDragId={activeDragId}
+        activeRotateNodeId={activeRotateNodeId}
         geometry={geometry}
         hatchPatternId={renderCtx?.hatchPatternId}
         hoveredHandleId={hoveredHandleId}
@@ -845,6 +1043,7 @@ function InteractiveGeometry({
   hatchPatternId,
   hoveredHandleId,
   activeDragId,
+  activeRotateNodeId,
   isMarqueeSelectionActive,
   nodeId,
   sceneRotationDeg,
@@ -858,6 +1057,7 @@ function InteractiveGeometry({
   hatchPatternId: string | undefined
   hoveredHandleId: string | null
   activeDragId: string | null
+  activeRotateNodeId: AnyNodeId | null
   isMarqueeSelectionActive: boolean
   nodeId: AnyNodeId
   sceneRotationDeg: number
@@ -1100,7 +1300,7 @@ function InteractiveGeometry({
         // each end pointing tangentially in opposite directions —
         // "rotate either way."
         const handleId = makeHandleId(nodeId, g.payload)
-        const isHovered = hoveredHandleId === handleId
+        const isHovered = hoveredHandleId === handleId || activeRotateNodeId === nodeId
         // Arc geometry (all values precomputed for a 72° arc of
         // radius 0.13 — comparable footprint to `move-arrow`).
         const R = 0.13
@@ -1966,3 +2166,15 @@ function clientToPlan(clientX: number, clientY: number): FloorplanAffordancePoin
   // the Y axis on screen — same convention as `toSvgPlanPoint`).
   return [transformed.x, transformed.y]
 }
+
+function swallowNextClick(timeoutMs = 0) {
+  const swallowClick = (event: MouseEvent) => {
+    event.stopPropagation()
+    event.preventDefault()
+    window.removeEventListener('click', swallowClick, true)
+  }
+  window.addEventListener('click', swallowClick, true)
+  setTimeout(() => {
+    window.removeEventListener('click', swallowClick, true)
+  }, timeoutMs)
+}

packages/editor/src/components/editor/floorplan-background-selection.test.ts

@@ -0,0 +1,58 @@
+import { describe, expect, test } from 'bun:test'
+import { resolveFloorplanBackgroundSelection } from './floorplan-background-selection'
+
+const baseArgs = {
+  canSelectElementFloorplanGeometry: true,
+  canSelectFloorplanZones: false,
+  currentSelectedIds: ['wall_1'],
+  getFloorplanHitIdAtPoint: () => 'door_1',
+  isWallBuildActive: false,
+  modifierKeys: { meta: false, ctrl: false, shift: false },
+  planPoint: [0, 0] as [number, number],
+  structureLayer: 'elements',
+  toPoint2D: ([x, y]: [number, number]) => ({ x, y }),
+  visibleZonePolygons: [],
+}
+
+describe('resolveFloorplanBackgroundSelection', () => {
+  test('shift-click on a floorplan node toggles into the current selection', () => {
+    const result = resolveFloorplanBackgroundSelection({
+      ...baseArgs,
+      modifierKeys: { meta: false, ctrl: false, shift: true },
+    })
+
+    expect(result).toEqual({
+      handled: true,
+      kind: 'select-elements',
+      selectedIds: ['wall_1', 'door_1'],
+    })
+  })
+
+  test('shift-click on selected floorplan node toggles it out', () => {
+    const result = resolveFloorplanBackgroundSelection({
+      ...baseArgs,
+      currentSelectedIds: ['wall_1', 'door_1'],
+      modifierKeys: { meta: false, ctrl: false, shift: true },
+    })
+
+    expect(result).toEqual({
+      handled: true,
+      kind: 'select-elements',
+      selectedIds: ['wall_1'],
+    })
+  })
+
+  test('shift-click on empty floorplan space preserves selection', () => {
+    const result = resolveFloorplanBackgroundSelection({
+      ...baseArgs,
+      getFloorplanHitIdAtPoint: () => null,
+      modifierKeys: { meta: false, ctrl: false, shift: true },
+    })
+
+    expect(result).toEqual({
+      handled: true,
+      kind: 'clear-elements',
+      preserveSelection: true,
+    })
+  })
+})

packages/editor/src/components/editor/floorplan-background-selection.ts

@@ -7,6 +7,7 @@ import type { WallPlanPoint } from '../tools/wall/wall-drafting'
 type ModifierKeys = {
   meta: boolean
   ctrl: boolean
+  shift: boolean
 }
 
 type ZoneHitEntry = {
@@ -85,7 +86,7 @@ export function resolveFloorplanBackgroundSelection({
         handled: true,
         kind: 'select-elements',
         selectedIds:
-          modifierKeys.meta || modifierKeys.ctrl
+          modifierKeys.meta || modifierKeys.ctrl || modifierKeys.shift
             ? currentSelectedIds.includes(hitId)
               ? currentSelectedIds.filter((selectedId) => selectedId !== hitId)
               : [...currentSelectedIds, hitId]
@@ -105,7 +106,7 @@ export function resolveFloorplanBackgroundSelection({
     return {
       handled: true,
       kind: 'clear-elements',
-      preserveSelection: modifierKeys.meta || modifierKeys.ctrl,
+      preserveSelection: modifierKeys.meta || modifierKeys.ctrl || modifierKeys.shift,
     }
   }
 

packages/editor/src/components/editor/floorplan-panel.tsx

@@ -868,10 +868,15 @@ function getElevatorResizeSign(handle: ElevatorResizeHandle) {
   return handle.endsWith('positive') ? 1 : -1
 }
 
-function getSelectionModifierKeys(event?: { metaKey?: boolean; ctrlKey?: boolean }) {
+function getSelectionModifierKeys(event?: {
+  metaKey?: boolean
+  ctrlKey?: boolean
+  shiftKey?: boolean
+}) {
   return {
     meta: Boolean(event?.metaKey),
     ctrl: Boolean(event?.ctrlKey),
+    shift: Boolean(event?.shiftKey),
   }
 }
 
@@ -8660,10 +8665,11 @@ export function FloorplanPanel({
       // that snap wins, so skip Figma alignment and stand the beacon there.
       const lockedToWall = wallSnap.snap !== null
       let snappedPoint = wallSnapped
-      if (lockedToWall || wallAngleSnap) {
+      if (lockedToWall) {
         useAlignmentGuides.getState().clear()
       } else {
         snappedPoint = alignFloorplanDraftPoint(wallSnapped, {
+          applySnap: !wallAngleSnap,
           bypass: event.altKey || bypassSnap,
         })
       }
@@ -9233,8 +9239,11 @@ export function FloorplanPanel({
   )
 
   const addFloorplanSelection = useCallback(
-    (nextSelectedIds: string[], modifierKeys?: { meta: boolean; ctrl: boolean }) => {
-      const shouldAppend = Boolean(modifierKeys?.meta || modifierKeys?.ctrl)
+    (
+      nextSelectedIds: string[],
+      modifierKeys?: { meta: boolean; ctrl: boolean; shift: boolean },
+    ) => {
+      const shouldAppend = Boolean(modifierKeys?.meta || modifierKeys?.ctrl || modifierKeys?.shift)
 
       if (shouldAppend) {
         if (nextSelectedIds.length === 0) {
@@ -9252,8 +9261,8 @@ export function FloorplanPanel({
   )
 
   const toggleFloorplanSelection = useCallback(
-    (nodeId: string, modifierKeys?: { meta: boolean; ctrl: boolean }) => {
-      const shouldToggle = Boolean(modifierKeys?.meta || modifierKeys?.ctrl)
+    (nodeId: string, modifierKeys?: { meta: boolean; ctrl: boolean; shift: boolean }) => {
+      const shouldToggle = Boolean(modifierKeys?.meta || modifierKeys?.ctrl || modifierKeys?.shift)
 
       if (shouldToggle) {
         const currentSelectedIds = useViewer.getState().selection.selectedIds
@@ -9296,7 +9305,7 @@ export function FloorplanPanel({
   const commitFloorplanScreenSelection = useCallback(
     (nextSelectedIds: string[], event: PointerEvent) => {
       const modifierKeys = getSelectionModifierKeys(event)
-      const shouldAppend = modifierKeys.meta || modifierKeys.ctrl
+      const shouldAppend = modifierKeys.meta || modifierKeys.ctrl || modifierKeys.shift
 
       setSelectedReferenceId(null)
 
@@ -9934,7 +9943,7 @@ export function FloorplanPanel({
 
         if (hitId) {
           toggleFloorplanSelection(hitId, modifierKeys)
-        } else if (!(modifierKeys.meta || modifierKeys.ctrl)) {
+        } else if (!(modifierKeys.meta || modifierKeys.ctrl || modifierKeys.shift)) {
           commitFloorplanSelection([])
         }
       }

packages/editor/src/components/editor/node-arrow-handles.tsx

@@ -45,6 +45,7 @@ import { MeshBasicNodeMaterial } from 'three/webgpu'
 import { EDITOR_LAYER } from '../../lib/constants'
 import { createEditorApi } from '../../lib/editor-api'
 import { sfxEmitter } from '../../lib/sfx-bus'
+import useDirectManipulationFeedback from '../../store/use-direct-manipulation-feedback'
 import useEditor from '../../store/use-editor'
 import { suppressBoxSelectForPointer } from '../tools/select/box-select-state'
 import { formatAngleRadians } from '../tools/shared/segment-angle'
@@ -167,6 +168,7 @@ function DimensionLabel({
 
 export function NodeArrowHandles() {
   const selectedIds = useViewer((state) => state.selection.selectedIds)
+  const activeRotateNodeId = useDirectManipulationFeedback((state) => state.activeRotateNodeId)
   const mode = useEditor((state) => state.mode)
   const isFloorplanHovered = useEditor((state) => state.isFloorplanHovered)
   const movingNode = useEditor((state) => state.movingNode)
@@ -180,7 +182,7 @@ export function NodeArrowHandles() {
   const curvingWall = useEditor((state) => state.curvingWall)
   const curvingFence = useEditor((state) => state.curvingFence)
 
-  const selectedId = selectedIds.length === 1 ? selectedIds[0] : null
+  const selectedId = selectedIds.length === 1 ? selectedIds[0] : activeRotateNodeId
   const rawNode = useScene((state) =>
     selectedId ? (state.nodes[selectedId as AnyNodeId] ?? null) : null,
   )
@@ -1028,6 +1030,8 @@ function ArcArrow({
   // corner) render a two-headed curved arrow; everything else (stair
   // sweep, etc.) keeps the chevron.
   const isRotateShape = descriptor.shape === 'rotate'
+  const activeRotateNodeId = useDirectManipulationFeedback((state) => state.activeRotateNodeId)
+  const isDirectRotating = isRotateShape && activeRotateNodeId === liveNode.id
   // 'node-normal' spins the node about its local +Z (a wall item flat against
   // its wall) instead of yaw about world-Y. The drag plane and the icon both
   // tilt into that plane, and the horizontal-only wedge/ring readout is
@@ -1067,7 +1071,7 @@ function ArcArrow({
   // arrow is hovered or dragging. Same recipe as the linear / radial
   // decoration path.
   const decoration = descriptor.decoration
-  const showDecoration = Boolean(decoration) && (isHovered || isDragging)
+  const showDecoration = Boolean(decoration) && (isHovered || isDragging || isDirectRotating)
 
   const activate = useHandleDrag({
     kind: 'drag',
@@ -1142,13 +1146,6 @@ function ArcArrow({
     },
   })
 
-  // Suppress "declared but unused" for `liveNode` — ArcArrow's apply
-  // operates entirely on `initialNode` (snapshot taken inside activate)
-  // and `delta` (live cursor angle), so the live store node doesn't
-  // appear in the rotation pipeline. The prop is still required because
-  // ArrowHandle passes it uniformly to every variant.
-  void liveNode
-
   return (
     <>
       {showDecoration && decoration ? (
@@ -1172,7 +1169,7 @@ function ArcArrow({
       <HandleArrow
         activeCursor={dragCursor}
         cursor={hoverCursor}
-        hover={isHovered}
+        hover={isHovered || isDirectRotating}
         onHoverChange={setIsHovered}
         onPointerDown={activate}
         placement={{

packages/editor/src/components/editor/selection-manager.tsx

@@ -4,8 +4,10 @@ import {
   type BuildingNode,
   type CeilingNode,
   type ColumnNode,
+  createSceneApi,
   emitter,
   type FenceNode,
+  type GridEvent,
   getEffectiveRoofSurfaceMaterial,
   getEffectiveSegmentSurfaceMaterial,
   getMaterialPresetByRef,
@@ -28,6 +30,7 @@ import {
   type StairSegmentEvent,
   type StairSurfaceMaterialRole,
   sceneRegistry,
+  useLiveNodeOverrides,
   useScene,
 } from '@pascal-app/core'
 
@@ -42,6 +45,13 @@ import {
 } from '@pascal-app/viewer'
 import { useCallback, useEffect, useRef } from 'react'
 import { type BufferGeometry, Color, type Material, type Mesh, type Object3D, Vector3 } from 'three'
+import {
+  canDirectMoveNode,
+  canDirectRotateNode,
+  resolveDirectRotationDragDelta,
+  resolveDirectRotationPatch,
+} from '../../lib/direct-manipulation'
+import { createEditorApi } from '../../lib/editor-api'
 import {
   type ActivePaintMaterial,
   buildRoofSegmentSurfaceMaterialPatch,
@@ -51,13 +61,17 @@ import {
   hasActivePaintMaterial,
   resolveActivePaintMaterialFromSelection,
 } from '../../lib/material-paint'
-import { emitDeleteSFX } from '../../lib/sfx-bus'
-import useEditor, {
-  type MaterialTargetRole,
-  type Phase,
-  type StructureLayer,
-} from './../../store/use-editor'
-import { boxSelectHandled } from '../tools/select/box-select-state'
+import {
+  resolveNodeSelectionTarget,
+  resolveSelectedIdsForNodeClick,
+  type SelectionModifierKeys,
+  selectionModifiersFromEvent,
+} from '../../lib/selection-routing'
+import { emitDeleteSFX, sfxEmitter } from '../../lib/sfx-bus'
+import useDirectManipulationFeedback from '../../store/use-direct-manipulation-feedback'
+import useEditor, { type MaterialTargetRole } from './../../store/use-editor'
+import { boxSelectHandled, suppressBoxSelectForPointer } from '../tools/select/box-select-state'
+import { swallowNextClick } from './node-arrow-handles'
 
 const isNodeInCurrentLevel = (node: AnyNode): boolean => {
   // Elevators are building-scoped, so they stay selectable across level filters.
@@ -86,11 +100,6 @@ type SelectableNodeType =
   | 'window'
   | 'door'
 
-type ModifierKeys = {
-  meta: boolean
-  ctrl: boolean
-}
-
 type PaintPreviewCleanup = () => void
 
 type PaintInteraction = {
@@ -103,14 +112,33 @@ type PaintInteraction = {
 
 interface SelectionStrategy {
   types: SelectableNodeType[]
-  handleSelect: (node: AnyNode, nativeEvent?: any, modifierKeys?: ModifierKeys) => void
+  handleSelect: (
+    node: AnyNode,
+    nativeEvent?: any,
+    modifierKeys?: SelectionModifierKeys,
+    baseSelectedIds?: readonly string[],
+  ) => void
   handleDeselect: () => void
   isValid: (node: AnyNode) => boolean
 }
 
-type SelectionTarget = {
-  phase: Phase
-  structureLayer?: StructureLayer
+const DIRECT_DRAG_THRESHOLD_PX = 4
+const DIRECT_ROTATE_EPSILON = 1e-6
+const DIRECT_ROTATE_RADIANS_PER_PIXEL = Math.PI / 180
+
+function pointerEventFromNodeEvent(event: NodeEvent): PointerEvent {
+  const threeEvent = event.nativeEvent as unknown as PointerEvent & {
+    nativeEvent?: PointerEvent
+  }
+  return threeEvent.nativeEvent ?? threeEvent
+}
+
+function isCommandModifier(event: Pick<PointerEvent, 'metaKey' | 'ctrlKey'>): boolean {
+  return event.metaKey || event.ctrlKey
+}
+
+function pointerDistancePx(event: PointerEvent, startX: number, startY: number): number {
+  return Math.hypot(event.clientX - startX, event.clientY - startY)
 }
 
 export const resolveBuildingId = (
@@ -619,22 +647,17 @@ function disposeHighlightedMaterials(material: Material | Material[]) {
 
 const computeNextIds = (
   node: AnyNode,
-  selectedIds: string[],
+  selectedIds: readonly string[],
   event?: any,
-  modifierKeys?: ModifierKeys,
+  modifierKeys?: SelectionModifierKeys,
+  baseSelectedIds?: readonly string[],
 ): string[] => {
-  const isMeta = event?.metaKey || event?.nativeEvent?.metaKey || modifierKeys?.meta
-  const isCtrl = event?.ctrlKey || event?.nativeEvent?.ctrlKey || modifierKeys?.ctrl
-
-  if (isMeta || isCtrl) {
-    if (selectedIds.includes(node.id)) {
-      return selectedIds.filter((id) => id !== node.id)
-    }
-    return [...selectedIds, node.id]
-  }
-
-  // Not holding modifiers: select only this node
-  return [node.id]
+  return resolveSelectedIdsForNodeClick({
+    baseSelectedIds,
+    currentSelectedIds: selectedIds,
+    modifierKeys: selectionModifiersFromEvent(event, modifierKeys),
+    nodeId: node.id,
+  })
 }
 
 const SELECTION_STRATEGIES: Record<string, SelectionStrategy> = {
@@ -667,7 +690,7 @@ const SELECTION_STRATEGIES: Record<string, SelectionStrategy> = {
       'window',
       'door',
     ],
-    handleSelect: (node, nativeEvent, modifierKeys) => {
+    handleSelect: (node, nativeEvent, modifierKeys, baseSelectedIds) => {
       const { selection, setSelection } = useViewer.getState()
       const nodes = useScene.getState().nodes
       const nodeLevelId = node.type === 'elevator' ? null : resolveLevelId(node, nodes)
@@ -694,7 +717,13 @@ const SELECTION_STRATEGIES: Record<string, SelectionStrategy> = {
         // Wait, the hierarchy guard resets zoneId if levelId changes. That's fine since we provide zoneId.
         setSelection(updates)
       } else {
-        updates.selectedIds = computeNextIds(node, selection.selectedIds, nativeEvent, modifierKeys)
+        updates.selectedIds = computeNextIds(
+          node,
+          selection.selectedIds,
+          nativeEvent,
+          modifierKeys,
+          baseSelectedIds,
+        )
         setSelection(updates)
       }
     },
@@ -746,7 +775,7 @@ const SELECTION_STRATEGIES: Record<string, SelectionStrategy> = {
 
   furnish: {
     types: ['item'],
-    handleSelect: (node, nativeEvent, modifierKeys) => {
+    handleSelect: (node, nativeEvent, modifierKeys, baseSelectedIds) => {
       const { selection, setSelection } = useViewer.getState()
       const nodes = useScene.getState().nodes
       const nodeLevelId = resolveLevelId(node, nodes)
@@ -760,7 +789,13 @@ const SELECTION_STRATEGIES: Record<string, SelectionStrategy> = {
         updates.buildingId = buildingId
       }
 
-      updates.selectedIds = computeNextIds(node, selection.selectedIds, nativeEvent, modifierKeys)
+      updates.selectedIds = computeNextIds(
+        node,
+        selection.selectedIds,
+        nativeEvent,
+        modifierKeys,
+        baseSelectedIds,
+      )
       setSelection(updates)
     },
     handleDeselect: () => {
@@ -776,7 +811,7 @@ const SELECTION_STRATEGIES: Record<string, SelectionStrategy> = {
       // Registry-driven kinds with `category: 'furnish'` (shelf today,
       // future furniture kinds): selectable in furnish phase if their
       // definition declares the `selectable` capability. Without this
-      // branch, shelf clicks routed to furnish phase via getSelectionTarget
+      // branch, shelf clicks routed to furnish phase via resolveNodeSelectionTarget
       // would be rejected here — single-click selection broken.
       const def = nodeRegistry.get(node.type)
       if (def && def.category === 'furnish' && def.capabilities.selectable) return true
@@ -785,76 +820,14 @@ const SELECTION_STRATEGIES: Record<string, SelectionStrategy> = {
   },
 }
 
-const getSelectionTarget = (node: AnyNode): SelectionTarget | null => {
-  // Item is checked FIRST so its asset.category-driven routing (door/
-  // window items land in structure phase, everything else in furnish)
-  // beats the generic registry fallback below. Without this, registering
-  // `item` (Phase 5) made isRegistrySelectable('item') match the
-  // structure branch first, breaking single-click selection: first click
-  // switched the editor to structure phase, second click selected.
-  if (node.type === 'item') {
-    const item = node as ItemNode
-    if (item.asset.category === 'door' || item.asset.category === 'window') {
-      return {
-        phase: 'structure',
-        structureLayer: 'elements',
-      }
-    }
-    return {
-      phase: 'furnish',
-    }
-  }
-
-  if (node.type === 'zone') {
-    return {
-      phase: 'structure',
-      structureLayer: 'zones',
-    }
-  }
-
-  if (
-    node.type === 'wall' ||
-    node.type === 'fence' ||
-    node.type === 'column' ||
-    node.type === 'elevator' ||
-    node.type === 'slab' ||
-    node.type === 'ceiling' ||
-    node.type === 'roof' ||
-    node.type === 'roof-segment' ||
-    node.type === 'stair' ||
-    node.type === 'stair-segment' ||
-    node.type === 'spawn' ||
-    node.type === 'window' ||
-    node.type === 'door'
-  ) {
-    return {
-      phase: 'structure',
-      structureLayer: 'elements',
-    }
-  }
-
-  // Registry-driven kinds (Phase 5+): route by `def.category`. Built-ins
-  // above match before this fallback. Furnish-category kinds (shelf,
-  // item — already handled above) land on the furnish phase; structure-
-  // category kinds (everything else) on structure/elements.
-  const def = nodeRegistry.get(node.type)
-  if (def) {
-    if (def.category === 'furnish') {
-      return { phase: 'furnish' }
-    }
-    return { phase: 'structure', structureLayer: 'elements' }
-  }
-
-  return null
-}
-
 export const SelectionManager = () => {
   const phase = useEditor((s) => s.phase)
   const mode = useEditor((s) => s.mode)
   const setHoverHighlightMode = useViewer((s) => s.setHoverHighlightMode)
-  const modifierKeysRef = useRef<ModifierKeys>({
+  const modifierKeysRef = useRef<SelectionModifierKeys>({
     meta: false,
     ctrl: false,
+    shift: false,
   })
   const clickHandledRef = useRef(false)
 
@@ -1230,16 +1203,19 @@ export const SelectionManager = () => {
     const onKeyDown = (event: KeyboardEvent) => {
       if (event.key === 'Meta') modifierKeysRef.current.meta = true
       if (event.key === 'Control') modifierKeysRef.current.ctrl = true
+      if (event.key === 'Shift') modifierKeysRef.current.shift = true
     }
 
     const onKeyUp = (event: KeyboardEvent) => {
       if (event.key === 'Meta') modifierKeysRef.current.meta = false
       if (event.key === 'Control') modifierKeysRef.current.ctrl = false
+      if (event.key === 'Shift') modifierKeysRef.current.shift = false
     }
 
     const clearModifiers = () => {
       modifierKeysRef.current.meta = false
       modifierKeysRef.current.ctrl = false
+      modifierKeysRef.current.shift = false
     }
 
     window.addEventListener('keydown', onKeyDown)
@@ -1253,6 +1229,222 @@ export const SelectionManager = () => {
     }
   }, [])
 
+  useEffect(() => {
+    if (mode !== 'select') return
+    if (movingNode || curvingWall || curvingFence) return
+
+    const onPointerDown = (event: NodeEvent) => {
+      const pointer = pointerEventFromNodeEvent(event)
+      if (pointer.button !== 0 || !isCommandModifier(pointer)) return
+
+      const node = useScene.getState().nodes[event.node.id as AnyNodeId] ?? event.node
+      if (!canDirectMoveNode(node)) return
+      if (!useViewer.getState().selection.selectedIds.includes(node.id)) return
+
+      const startX = pointer.clientX
+      const startY = pointer.clientY
+      const pointerId = pointer.pointerId
+      const pointerTarget = pointer.target instanceof EventTarget ? pointer.target : null
+      let engaged = false
+
+      const cleanup = () => {
+        window.removeEventListener('pointermove', onMove)
+        window.removeEventListener('pointerup', onEnd)
+        window.removeEventListener('pointercancel', onEnd)
+        if (engaged) {
+          useViewer.getState().setInputDragging(false)
+        }
+      }
+
+      const onMove = (moveEvent: PointerEvent) => {
+        if (moveEvent.pointerId !== pointerId) return
+        if (engaged) return
+        if (pointerDistancePx(moveEvent, startX, startY) < DIRECT_DRAG_THRESHOLD_PX) return
+
+        engaged = true
+        event.stopPropagation()
+        suppressBoxSelectForPointer(event.nativeEvent)
+        useViewer.getState().setInputDragging(true)
+        swallowNextClick()
+        createEditorApi().engageMoveDrag(node)
+        requestAnimationFrame(() => {
+          if (useEditor.getState().movingNode?.id !== node.id) return
+          pointerTarget?.dispatchEvent(
+            new PointerEvent('pointermove', {
+              altKey: moveEvent.altKey,
+              bubbles: true,
+              buttons: moveEvent.buttons,
+              clientX: moveEvent.clientX,
+              clientY: moveEvent.clientY,
+              ctrlKey: moveEvent.ctrlKey,
+              metaKey: moveEvent.metaKey,
+              pointerId,
+              pointerType: moveEvent.pointerType,
+              shiftKey: moveEvent.shiftKey,
+            }),
+          )
+        })
+      }
+
+      const onEnd = (endEvent: PointerEvent) => {
+        if (endEvent.pointerId !== pointerId) return
+        cleanup()
+        if (engaged) {
+          requestAnimationFrame(() => {
+            const editor = useEditor.getState()
+            if (editor.movingNode?.id !== node.id || !editor.placementDragMode) return
+            editor.setMovingNode(null)
+          })
+        }
+      }
+
+      window.addEventListener('pointermove', onMove)
+      window.addEventListener('pointerup', onEnd)
+      window.addEventListener('pointercancel', onEnd)
+    }
+
+    const allTypes = [
+      'wall',
+      'fence',
+      'item',
+      'column',
+      'slab',
+      'ceiling',
+      'roof',
+      'roof-segment',
+      'stair',
+      'stair-segment',
+      'window',
+      'door',
+      'zone',
+      'shelf',
+      'spawn',
+      'elevator',
+      'building',
+    ] as const
+    const registryKinds = getSelectableKinds().filter(
+      (kind) => !(allTypes as readonly string[]).includes(kind),
+    )
+    const subscribedKinds = [...(allTypes as readonly string[]), ...registryKinds]
+
+    for (const type of subscribedKinds) {
+      emitter.on(`${type}:pointerdown` as any, onPointerDown as any)
+    }
+
+    return () => {
+      for (const type of subscribedKinds) {
+        emitter.off(`${type}:pointerdown` as any, onPointerDown as any)
+      }
+    }
+  }, [curvingFence, curvingWall, mode, movingNode])
+
+  useEffect(() => {
+    if (mode !== 'select') return
+    if (movingNode || curvingWall || curvingFence) return
+
+    const onPointerDown = (event: PointerEvent) => {
+      if (event.button !== 2 || !isCommandModifier(event)) return
+      if (!(event.target instanceof HTMLCanvasElement)) return
+
+      const selectedIds = useViewer.getState().selection.selectedIds
+      const hoveredId = useViewer.getState().hoveredId as AnyNodeId | null
+      if (!hoveredId || !selectedIds.includes(hoveredId)) return
+
+      const node = useScene.getState().nodes[hoveredId]
+      if (!node || !canDirectRotateNode(node)) return
+
+      event.preventDefault()
+      event.stopPropagation()
+
+      const nodeId = node.id as AnyNodeId
+      const pointerId = event.pointerId
+      const startX = event.clientX
+      const sceneApi = createSceneApi(useScene)
+      let lastPatch: Partial<AnyNode> | null = null
+
+      const applyDelta = (moveEvent: PointerEvent) => {
+        const delta = resolveDirectRotationDragDelta(
+          startX,
+          moveEvent.clientX,
+          DIRECT_ROTATE_RADIANS_PER_PIXEL,
+          moveEvent.shiftKey,
+        )
+        if (Math.abs(delta) < DIRECT_ROTATE_EPSILON) {
+          lastPatch = null
+          useLiveNodeOverrides.getState().clear(nodeId)
+          useScene.getState().markDirty(nodeId)
+          return
+        }
+        const patch = resolveDirectRotationPatch(node, delta, sceneApi)
+        if (!patch) return
+        lastPatch = patch
+        useLiveNodeOverrides.getState().set(nodeId, patch as Record<string, unknown>)
+        useScene.getState().markDirty(nodeId)
+      }
+
+      const cleanup = () => {
+        window.removeEventListener('pointermove', onMove, true)
+        window.removeEventListener('pointerup', onUp, true)
+        window.removeEventListener('pointercancel', onCancel, true)
+        window.removeEventListener('contextmenu', preventContextMenu, true)
+        useLiveNodeOverrides.getState().clear(nodeId)
+        useScene.getState().markDirty(nodeId)
+        useDirectManipulationFeedback.getState().clearActiveRotateNodeId(nodeId)
+        useScene.temporal.getState().resume()
+        useViewer.getState().setInputDragging(false)
+        if (document.body.style.cursor === 'ew-resize') {
+          document.body.style.cursor = ''
+        }
+      }
+
+      const onMove = (moveEvent: PointerEvent) => {
+        if (moveEvent.pointerId !== pointerId) return
+        moveEvent.preventDefault()
+        moveEvent.stopPropagation()
+        applyDelta(moveEvent)
+      }
+
+      const onUp = (upEvent: PointerEvent) => {
+        if (upEvent.pointerId !== pointerId) return
+        upEvent.preventDefault()
+        upEvent.stopPropagation()
+        swallowNextClick()
+        if (lastPatch) {
+          sceneApi.update(nodeId, lastPatch)
+          sfxEmitter.emit('sfx:item-place')
+        }
+        cleanup()
+      }
+
+      const onCancel = (cancelEvent: PointerEvent) => {
+        if (cancelEvent.pointerId !== pointerId) return
+        cleanup()
+      }
+
+      const preventContextMenu = (contextEvent: Event) => {
+        contextEvent.preventDefault()
+        contextEvent.stopPropagation()
+      }
+
+      useViewer.getState().setInputDragging(true)
+      useDirectManipulationFeedback.getState().setActiveRotateNodeId(nodeId)
+      useScene.temporal.getState().pause()
+      document.body.style.cursor = 'ew-resize'
+      sfxEmitter.emit('sfx:item-pick')
+      applyDelta(event)
+
+      window.addEventListener('pointermove', onMove, true)
+      window.addEventListener('pointerup', onUp, true)
+      window.addEventListener('pointercancel', onCancel, true)
+      window.addEventListener('contextmenu', preventContextMenu, true)
+    }
+
+    window.addEventListener('pointerdown', onPointerDown, true)
+    return () => {
+      window.removeEventListener('pointerdown', onPointerDown, true)
+    }
+  }, [curvingFence, curvingWall, mode, movingNode])
+
   useEffect(() => {
     if (mode !== 'select') return
     if (movingNode || curvingWall || curvingFence) return
@@ -1274,12 +1466,13 @@ export const SelectionManager = () => {
 
       let currentPhase = useEditor.getState().phase
       let currentStructureLayer = useEditor.getState().structureLayer
+      const selectedIdsBeforeRouting = useViewer.getState().selection.selectedIds
 
       // Auto-switch between zones, structure, and furnish when clicking elements on the same level.
       // Also auto-switch from site phase when clicking structural/furnish elements (e.g. 2D floorplan).
       if (currentPhase === 'structure' || currentPhase === 'furnish' || currentPhase === 'site') {
         if (isNodeInCurrentLevel(node)) {
-          const target = getSelectionTarget(node)
+          const target = resolveNodeSelectionTarget(node)
           if (target) {
             if (target.phase !== currentPhase) {
               useEditor.getState().setPhase(target.phase)
@@ -1330,7 +1523,12 @@ export const SelectionManager = () => {
           useEditor.getState().setEditingHole(null)
         }
 
-        activeStrategy.handleSelect(nodeToSelect, event.nativeEvent, modifierKeysRef.current)
+        activeStrategy.handleSelect(
+          nodeToSelect,
+          event.nativeEvent,
+          modifierKeysRef.current,
+          selectedIdsBeforeRouting,
+        )
 
         let nextMaterialTargetHandled = false
 
@@ -1435,9 +1633,11 @@ export const SelectionManager = () => {
       emitter.on(`${type}:click` as any, onClick as any)
     })
 
-    const onGridClick = () => {
+    const onGridClick = (event: GridEvent) => {
       if (clickHandledRef.current) return
       if (boxSelectHandled) return
+      const nativeEvent = event.nativeEvent
+      if (nativeEvent?.metaKey || nativeEvent?.ctrlKey || nativeEvent?.shiftKey) return
       const { phase, structureLayer } = useEditor.getState()
       const activeStrategy = SELECTION_STRATEGIES[phase]
       if (activeStrategy) activeStrategy.handleDeselect()
@@ -1506,7 +1706,10 @@ export const SelectionManager = () => {
 
       const currentPhase = useEditor.getState().phase
 
-      let targetPhase: 'site' | 'structure' | 'furnish' | null = null
+      const selectedIdsBeforeRouting = useViewer.getState().selection.selectedIds
+      const target = resolveNodeSelectionTarget(node)
+      let targetPhase: 'site' | 'structure' | 'furnish' | null = target?.phase ?? null
+      let targetStructureLayer = target?.structureLayer
       let forceSelect = false
 
       if (node.type === 'building' || node.type === 'site') {
@@ -1515,36 +1718,15 @@ export const SelectionManager = () => {
         }
         if (node.type === 'building') {
           targetPhase = 'structure'
+          targetStructureLayer = 'elements'
         }
-      } else if (
-        node.type === 'wall' ||
-        node.type === 'fence' ||
-        node.type === 'column' ||
-        node.type === 'elevator' ||
-        node.type === 'slab' ||
-        node.type === 'ceiling' ||
-        node.type === 'roof' ||
-        node.type === 'roof-segment' ||
-        node.type === 'stair' ||
-        node.type === 'stair-segment' ||
-        node.type === 'spawn' ||
-        node.type === 'window' ||
-        node.type === 'door'
-      ) {
-        targetPhase = 'structure'
+      } else {
         if (node.type === 'roof-segment' && currentPhase === 'structure') {
           forceSelect = true // allow double click to dive into roof-segment even if already in structure phase
         }
         if (node.type === 'stair-segment' && currentPhase === 'structure') {
           forceSelect = true // allow double click to dive into stair-segment even if already in structure phase
         }
-      } else if (node.type === 'item') {
-        const item = node as ItemNode
-        if (item.asset.category === 'door' || item.asset.category === 'window') {
-          targetPhase = 'structure'
-        } else {
-          targetPhase = 'furnish'
-        }
       }
 
       if (node.type === 'zone') {
@@ -1558,13 +1740,22 @@ export const SelectionManager = () => {
           useEditor.getState().setPhase(targetPhase)
         }
 
-        if (targetPhase === 'structure' && useEditor.getState().structureLayer === 'zones') {
-          useEditor.getState().setStructureLayer('elements')
+        if (
+          targetPhase === 'structure' &&
+          targetStructureLayer &&
+          targetStructureLayer !== useEditor.getState().structureLayer
+        ) {
+          useEditor.getState().setStructureLayer(targetStructureLayer)
         }
 
         const strategy = SELECTION_STRATEGIES[targetPhase || currentPhase]
         if (strategy) {
-          strategy.handleSelect(node, event.nativeEvent, modifierKeysRef.current)
+          strategy.handleSelect(
+            node,
+            event.nativeEvent,
+            modifierKeysRef.current,
+            selectedIdsBeforeRouting,
+          )
         }
       }
     }

packages/editor/src/components/editor/use-floorplan-background-placement.ts

@@ -5,6 +5,7 @@ import { type MouseEvent as ReactMouseEvent, useCallback } from 'react'
 import { resolveCeilingPlanPointSnap } from '../../lib/ceiling-plan-snap'
 import { alignFloorplanDraftPoint, getPlanPointDistance } from '../../lib/floorplan'
 import { resolveSlabPlanPointSnap } from '../../lib/slab-plan-snap'
+import useAlignmentGuides from '../../store/use-alignment-guides'
 import useSegmentDraftChain from '../../store/use-segment-draft-chain'
 import { snapFenceDraftPoint } from '../tools/fence/fence-drafting'
 import { WALL_GRID_STEP, type WallPlanPoint } from '../tools/wall/wall-drafting'
@@ -329,10 +330,15 @@ export function useFloorplanBackgroundPlacement({
         const wallGridBase = bypassSnap ? planPoint : worldGridSnap(planPoint, wallStep)
         const wallLocked =
           !bypassSnap && (wallSnapped[0] !== wallGridBase[0] || wallSnapped[1] !== wallGridBase[1])
-        const snappedPoint =
-          wallLocked || wallAngleSnap
-            ? wallSnapped
-            : alignFloorplanDraftPoint(wallSnapped, { bypass: event.altKey || bypassSnap })
+        let snappedPoint = wallSnapped
+        if (wallLocked) {
+          useAlignmentGuides.getState().clear()
+        } else {
+          snappedPoint = alignFloorplanDraftPoint(wallSnapped, {
+            applySnap: !wallAngleSnap,
+            bypass: event.altKey || bypassSnap,
+          })
+        }
 
         emitFloorplanGridEvent('click', snappedPoint, event)
 

packages/editor/src/components/tools/elevator/move-elevator-tool.tsx

@@ -15,6 +15,7 @@ import {
 import { useCallback, useEffect, useRef, useState } from 'react'
 import { markToolCancelConsumed } from '../../../hooks/use-keyboard'
 import { resolveElevatorSupportY } from '../../../lib/elevator-support'
+import { consumePlacementDragRelease } from '../../../lib/placement-drag-release'
 import { sfxEmitter } from '../../../lib/sfx-bus'
 import useEditor from '../../../store/use-editor'
 import { CursorSphere } from '../shared/cursor-sphere'
@@ -160,6 +161,7 @@ export function MoveElevatorTool({
     }
 
     const onGridClick = (event: GridEvent) => {
+      if (wasCommitted) return
       const nextPosition: ElevatorNode['position'] = [...previewPositionRef.current]
 
       wasCommitted = true
@@ -189,6 +191,11 @@ export function MoveElevatorTool({
       event.nativeEvent?.stopPropagation?.()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      onGridClick({ nativeEvent: event } as unknown as GridEvent)
+    }
+
     const onCancel = () => {
       wasCancelled = true
       clearPreview()
@@ -231,6 +238,7 @@ export function MoveElevatorTool({
     emitter.on('grid:click', onGridClick)
     emitter.on('tool:cancel', onCancel)
     window.addEventListener('keydown', onKeyDown)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       clearPreview()
@@ -247,6 +255,7 @@ export function MoveElevatorTool({
       emitter.off('grid:click', onGridClick)
       emitter.off('tool:cancel', onCancel)
       window.removeEventListener('keydown', onKeyDown)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
     }
   }, [movingNode, exitMoveMode])
 

packages/editor/src/components/tools/item/placement-math.test.ts

@@ -1,5 +1,5 @@
 import { describe, expect, test } from 'bun:test'
-import { stripTransient } from './placement-math'
+import { getDetachedAttachmentPreviewLift, stripTransient } from './placement-math'
 
 describe('stripTransient', () => {
   test('removes placement-only metadata flags before commit', () => {
@@ -8,3 +8,15 @@ describe('stripTransient', () => {
     })
   })
 })
+
+describe('getDetachedAttachmentPreviewLift', () => {
+  test('raises attach-only item previews while they are detached from their host', () => {
+    expect(getDetachedAttachmentPreviewLift('wall')).toBeGreaterThan(0)
+    expect(getDetachedAttachmentPreviewLift('wall-side')).toBeGreaterThan(0)
+    expect(getDetachedAttachmentPreviewLift('ceiling')).toBeGreaterThan(0)
+  })
+
+  test('keeps floor item previews on the floor', () => {
+    expect(getDetachedAttachmentPreviewLift(undefined)).toBe(0)
+  })
+})

packages/editor/src/components/tools/item/placement-math.ts

@@ -55,6 +55,12 @@ export function getGridAlignedDimensions(
   return [snapUpToGridStep(w, step), h, snapUpToGridStep(d, step)]
 }
 
+export function getDetachedAttachmentPreviewLift(
+  attachTo: AssetInput['attachTo'] | null | undefined,
+): number {
+  return attachTo ? 0.45 : 0
+}
+
 /**
  * Calculate cursor rotation in WORLD space from wall normal and orientation.
  */

packages/editor/src/components/tools/item/placement-strategies.ts

@@ -144,6 +144,7 @@ export const floorStrategy = {
   ): CommitResult | null {
     if (ctx.state.surface !== 'floor') return null
     if (!(ctx.levelId && ctx.draftItem)) return null
+    if (ctx.draftItem.asset.attachTo) return null
 
     const pos: [number, number, number] = [
       ctx.gridPosition.x,

packages/editor/src/components/tools/item/use-placement-coordinator.tsx

@@ -52,7 +52,12 @@ import {
   type PreviewBounds,
   updateLineGeometry,
 } from '../shared/placement-box-geometry'
-import { getGridAlignedDimensions, snapToGrid, snapUpToGridStep } from './placement-math'
+import {
+  getDetachedAttachmentPreviewLift,
+  getGridAlignedDimensions,
+  snapToGrid,
+  snapUpToGridStep,
+} from './placement-math'
 import {
   ceilingStrategy,
   checkCanPlace,
@@ -732,6 +737,9 @@ export function usePlacementCoordinator(config: PlacementCoordinatorConfig): Rea
       previousGridPos = [...gridPos]
       gridPosition.current.set(...gridPos)
       const cursorPosition = getFloorVisualPosition(gridPos)
+      if (!draft && asset.attachTo) {
+        cursorPosition[1] += getDetachedAttachmentPreviewLift(asset.attachTo)
+      }
       cursorGroupRef.current.position.set(cursorPosition[0], cursorPosition[1], cursorPosition[2])
       // Floor items only rotate on Y; keep the preview box (and the live
       // transform the 2D floorplan mirrors) aligned with the draft's

packages/editor/src/components/tools/registry/move-registry-node-tool.tsx

@@ -27,6 +27,7 @@ import { stripPlacementMetadataFlags } from '../../../lib/placement-metadata'
 import { resolvePlanarCursorPosition } from '../../../lib/planar-cursor-placement'
 import { sfxEmitter } from '../../../lib/sfx-bus'
 import useEditor from '../../../store/use-editor'
+import { swallowNextClick } from '../../editor/node-arrow-handles'
 import { CursorSphere } from '../shared/cursor-sphere'
 import { DragBoundingBox } from '../shared/drag-bounding-box'
 import { getFloorStackPreviewPosition } from '../shared/floor-stack-preview'
@@ -505,6 +506,21 @@ export function MoveRegistryNodeTool({ node }: { node: AnyNode }) {
     emitter.on('grid:move', onGridMove)
     emitter.on('grid:click', commitAtCursor)
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!useEditor.getState().placementDragMode) return
+      if (event.button !== 0) return
+      swallowNextClick()
+      if (!hasMovedRef.current) {
+        exitMoveMode()
+        return
+      }
+      commitAtCursor({
+        nativeEvent: event,
+        stopPropagation: () => event.stopPropagation(),
+      } as unknown as ClickTriggerEvent)
+    }
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
+
     // Listen on every common kind's click event too. mitt's typing keeps
     // `${kind}:click` as a fixed union so the cast is safe at runtime —
     // we're just routing them through the shared commit path.
@@ -539,6 +555,7 @@ export function MoveRegistryNodeTool({ node }: { node: AnyNode }) {
       window.removeEventListener('keyup', onKeyUp)
       emitter.off('grid:move', onGridMove)
       emitter.off('grid:click', commitAtCursor)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
       for (const kind of CLICK_TRIGGER_KINDS) {
         const key = `${kind}:click` as ClickKey
         emitter.off(key, commitAtCursor as never)

packages/editor/src/components/ui/helpers/contextual-helper-panel.tsx

@@ -0,0 +1,37 @@
+import type { ContextualShortcutHint } from '../../../lib/contextual-help'
+import { cn } from '../../../lib/utils'
+import { ShortcutToken } from '../primitives/shortcut-token'
+
+function ShortcutSequence({ keys }: { keys: string[] }) {
+  return (
+    <div className="flex flex-wrap items-center gap-0.5">
+      {keys.map((key, index) => (
+        <div className="flex items-center gap-0.5" key={`${key}-${index}`}>
+          {index > 0 ? <span className="text-[9px] text-muted-foreground/70">+</span> : null}
+          <ShortcutToken className="h-5 px-1.5 text-[10px]" value={key} />
+        </div>
+      ))}
+    </div>
+  )
+}
+
+export function ContextualHelperPanel({ hints }: { hints: ContextualShortcutHint[] }) {
+  if (hints.length === 0) return null
+
+  return (
+    <div className="pointer-events-none fixed top-1/2 right-4 z-40 flex max-w-[260px] -translate-y-1/2 flex-col gap-1.5 rounded-lg border border-border bg-background/95 px-3 py-2.5 shadow-lg backdrop-blur-md">
+      {hints.map((hint) => (
+        <div
+          className={cn(
+            'grid min-w-0 grid-cols-1 gap-1 rounded-md text-sm',
+            hint.active && '-mx-1 bg-primary/10 px-1.5 py-1 text-foreground',
+          )}
+          key={`${hint.keys.join('+')}:${hint.label}`}
+        >
+          <ShortcutSequence keys={hint.keys} />
+          <span className="min-w-0 text-muted-foreground text-xs leading-snug">{hint.label}</span>
+        </div>
+      ))}
+    </div>
+  )
+}

packages/editor/src/components/ui/helpers/helper-manager.tsx

@@ -1,44 +1,118 @@
 'use client'
 
-import { nodeRegistry } from '@pascal-app/core'
+import {
+  type AnyNode,
+  type AnyNodeId,
+  nodeRegistry,
+  useScene,
+} from '@pascal-app/core'
+import { useViewer } from '@pascal-app/viewer'
+import { useEffect, useMemo, useState } from 'react'
+import { useShallow } from 'zustand/react/shallow'
 import { useIsMobile } from '../../../hooks/use-mobile'
+import { resolveSelectModeHelpHints } from '../../../lib/contextual-help'
+import { canDirectMoveNode, canDirectRotateNode } from '../../../lib/direct-manipulation'
 import useEditor from '../../../store/use-editor'
 import { BuildingHelper } from './building-helper'
+import { ContextualHelperPanel } from './contextual-helper-panel'
 import { ItemHelper } from './item-helper'
 import { RegisteredToolHelper } from './registered-tool-helper'
 import { RoofHelper } from './roof-helper'
 
+type ActiveModifierKeys = {
+  command: boolean
+  shift: boolean
+}
+
+function useActiveModifierKeys(): ActiveModifierKeys {
+  const [modifiers, setModifiers] = useState<ActiveModifierKeys>({
+    command: false,
+    shift: false,
+  })
+
+  useEffect(() => {
+    const updateModifiers = (event: KeyboardEvent) => {
+      const isKeyDown = event.type === 'keydown'
+      setModifiers({
+        command:
+          event.metaKey ||
+          event.ctrlKey ||
+          (isKeyDown && (event.key === 'Meta' || event.key === 'Control')),
+        shift: event.shiftKey || (isKeyDown && event.key === 'Shift'),
+      })
+    }
+    const clearModifiers = () => {
+      setModifiers({ command: false, shift: false })
+    }
+
+    window.addEventListener('keydown', updateModifiers)
+    window.addEventListener('keyup', updateModifiers)
+    window.addEventListener('blur', clearModifiers)
+    return () => {
+      window.removeEventListener('keydown', updateModifiers)
+      window.removeEventListener('keyup', updateModifiers)
+      window.removeEventListener('blur', clearModifiers)
+    }
+  }, [])
+
+  return modifiers
+}
+
 export function HelperManager() {
   const mode = useEditor((s) => s.mode)
   const tool = useEditor((s) => s.tool)
   const movingNode = useEditor((state) => state.movingNode)
+  const selectedIds = useViewer((s) => s.selection.selectedIds)
   const isMobile = useIsMobile()
+  const modifiers = useActiveModifierKeys()
+  const selectedNodes = useScene(
+    useShallow((s) =>
+      selectedIds
+        .map((id) => s.nodes[id as AnyNodeId])
+        .filter((node): node is AnyNode => node !== undefined),
+    ),
+  )
+  const selectModeHints = useMemo(
+    () =>
+      resolveSelectModeHelpHints({
+        selectedCount: selectedNodes.length,
+        hasMovableSelection: selectedNodes.some((node) => canDirectMoveNode(node)),
+        hasRotatableSelection: selectedNodes.some((node) => canDirectRotateNode(node)),
+        commandPressed: modifiers.command,
+        shiftPressed: modifiers.shift,
+      }),
+    [modifiers.command, modifiers.shift, selectedNodes],
+  )
 
   // Helpers are keyboard-driven hints (Esc, R, etc.) — irrelevant on touch.
   if (isMobile) return null
 
   if (movingNode) {
     if (movingNode.type === 'building') return <BuildingHelper showRotate />
-    return <ItemHelper showEsc />
+    return <ItemHelper shiftPressed={modifiers.shift} showEsc />
   }
 
   if (mode === 'material-paint') {
     return null
   }
 
+  if (mode === 'select') {
+    return <ContextualHelperPanel hints={selectModeHints} />
+  }
+
   // Registry-first: kinds with `def.toolHints` render through the generic
   // `RegisteredToolHelper`. Today that covers ceiling / door / fence /
   // item / shelf / slab / spawn / wall / window.
   if (tool) {
     const def = nodeRegistry.get(tool)
     if (def?.toolHints && def.toolHints.length > 0) {
-      return <RegisteredToolHelper hints={def.toolHints} />
+      return <RegisteredToolHelper hints={def.toolHints} shiftPressed={modifiers.shift} />
     }
   }
 
   // Legacy fallback — only `roof` remains because it hasn't migrated to
   // `def.tool` / `def.toolHints` yet (no Stage D port). When roof
   // migrates, this switch deletes outright.
-  if (tool === 'roof') return <RoofHelper />
+  if (tool === 'roof') return <RoofHelper shiftPressed={modifiers.shift} />
   return null
 }

packages/editor/src/components/ui/helpers/item-helper.tsx

@@ -1,40 +1,24 @@
-import { ShortcutToken } from '../primitives/shortcut-token'
+import { ContextualHelperPanel } from './contextual-helper-panel'
 
 interface ItemHelperProps {
   showEsc?: boolean
+  shiftPressed?: boolean
 }
 
-export function ItemHelper({ showEsc }: ItemHelperProps) {
+export function ItemHelper({ showEsc, shiftPressed = false }: ItemHelperProps) {
   return (
-    <div className="pointer-events-none fixed top-1/2 right-4 z-40 flex -translate-y-1/2 flex-col gap-2 rounded-lg border border-border bg-background/95 px-4 py-3 shadow-lg backdrop-blur-md">
-      <div className="flex items-center gap-2 text-sm">
-        <ShortcutToken value="Left click" />
-        <span className="text-muted-foreground">Place item</span>
-      </div>
-      <div className="flex items-center gap-2 text-sm">
-        <ShortcutToken value="R" />
-        <span className="text-muted-foreground">Rotate counterclockwise</span>
-      </div>
-      <div className="flex items-center gap-2 text-sm">
-        <ShortcutToken value="T" />
-        <span className="text-muted-foreground">Rotate clockwise</span>
-      </div>
-      <div className="flex items-center gap-2 text-sm">
-        <ShortcutToken value="Shift" />
-        <span className="text-muted-foreground">Free place</span>
-      </div>
-      {showEsc && (
-        <div className="flex items-center gap-2 text-sm">
-          <ShortcutToken value="Esc" />
-          <span className="text-muted-foreground">Cancel</span>
-        </div>
-      )}
-      {!showEsc && (
-        <div className="flex items-center gap-2 text-sm">
-          <ShortcutToken value="Right click" />
-          <span className="text-muted-foreground">Cancel</span>
-        </div>
-      )}
-    </div>
+    <ContextualHelperPanel
+      hints={[
+        { keys: ['Left click'], label: 'Place item' },
+        { keys: ['R'], label: 'Rotate counterclockwise' },
+        { keys: ['T'], label: 'Rotate clockwise' },
+        {
+          keys: ['Shift'],
+          label: shiftPressed ? 'Guided constraints bypassed' : 'Free place',
+          active: shiftPressed,
+        },
+        { keys: [showEsc ? 'Esc' : 'Right click'], label: 'Cancel' },
+      ]}
+    />
   )
 }

packages/editor/src/components/ui/helpers/registered-tool-helper.tsx

@@ -1,5 +1,5 @@
 import type { ToolHint } from '@pascal-app/core'
-import { ShortcutToken } from '../primitives/shortcut-token'
+import { ContextualHelperPanel } from './contextual-helper-panel'
 
 /**
  * Generic helper panel rendered from `def.toolHints` data. Matches the
@@ -10,16 +10,22 @@ import { ShortcutToken } from '../primitives/shortcut-token'
  * Drops the need for per-kind helper files entirely — kinds declare
  * their hints as static data in their `NodeDefinition`.
  */
-export function RegisteredToolHelper({ hints }: { hints: ToolHint[] }) {
+export function RegisteredToolHelper({
+  hints,
+  shiftPressed = false,
+}: {
+  hints: ToolHint[]
+  shiftPressed?: boolean
+}) {
   if (hints.length === 0) return null
   return (
-    <div className="pointer-events-none fixed top-1/2 right-4 z-40 flex -translate-y-1/2 flex-col gap-2 rounded-lg border border-border bg-background/95 px-4 py-3 shadow-lg backdrop-blur-md">
-      {hints.map((hint) => (
-        <div className="flex items-center gap-2 text-sm" key={`${hint.key}:${hint.label}`}>
-          <ShortcutToken value={hint.key} />
-          <span className="text-muted-foreground">{hint.label}</span>
-        </div>
-      ))}
-    </div>
+    <ContextualHelperPanel
+      hints={hints.map((hint) => ({
+        keys: [hint.key],
+        label:
+          shiftPressed && hint.key === 'Shift' ? 'Guided constraints bypassed' : hint.label,
+        active: shiftPressed && hint.key === 'Shift',
+      }))}
+    />
   )
 }

packages/editor/src/components/ui/helpers/roof-helper.tsx

@@ -1,16 +1,17 @@
-import { ShortcutToken } from '../primitives/shortcut-token'
+import { ContextualHelperPanel } from './contextual-helper-panel'
 
-export function RoofHelper() {
+export function RoofHelper({ shiftPressed = false }: { shiftPressed?: boolean }) {
   return (
-    <div className="pointer-events-none fixed top-1/2 right-4 z-40 flex -translate-y-1/2 flex-col gap-2 rounded-lg border border-border bg-background/95 px-4 py-3 shadow-lg backdrop-blur-md">
-      <div className="flex items-center gap-2 text-sm">
-        <ShortcutToken value="Left click" />
-        <span className="text-muted-foreground">Set corner</span>
-      </div>
-      <div className="flex items-center gap-2 text-sm">
-        <ShortcutToken value="Esc" />
-        <span className="text-muted-foreground">Cancel</span>
-      </div>
-    </div>
+    <ContextualHelperPanel
+      hints={[
+        { keys: ['Left click'], label: 'Set corner' },
+        {
+          keys: ['Shift'],
+          label: shiftPressed ? 'Guided constraints bypassed' : 'Free corner',
+          active: shiftPressed,
+        },
+        { keys: ['Esc'], label: 'Cancel' },
+      ]}
+    />
   )
 }

packages/editor/src/components/ui/item-catalog/item-catalog.tsx

@@ -2,16 +2,11 @@
 
 import type { AssetInput } from '@pascal-app/core'
 import { resolveCdnUrl, useViewer } from '@pascal-app/viewer'
-import Image from 'next/image'
 import { useEffect } from 'react'
-import {
-  Tooltip,
-  TooltipContent,
-  TooltipTrigger,
-} from './../../../components/ui/primitives/tooltip'
 import { triggerSFX } from './../../../lib/sfx-bus'
 import { cn } from './../../../lib/utils'
 import useEditor, { type CatalogCategory } from './../../../store/use-editor'
+import { resolveAssetSnapTarget, SnapTargetBadge } from '../snap-target-badge'
 import { CATALOG_ITEMS } from './catalog-items'
 
 export function ItemCatalog({
@@ -68,12 +63,6 @@ export function ItemCatalog({
     }
   }, [categoryItems, selectedItem?.src, setSelectedItem])
 
-  const getAttachmentIcon = (attachTo: AssetInput['attachTo']) => {
-    if (attachTo === 'wall' || attachTo === 'wall-side') return '/icons/wall.png'
-    if (attachTo === 'ceiling') return '/icons/ceiling.png'
-    return null
-  }
-
   if (filteredItems.length === 0 && emptyState) {
     return <>{emptyState}</>
   }
@@ -86,7 +75,7 @@ export function ItemCatalog({
       {leadingTile}
       {filteredItems.map((item, index) => {
         const isSelected = selectedItem?.src === item?.src
-        const attachmentIcon = getAttachmentIcon(item?.attachTo)
+        const snapTarget = resolveAssetSnapTarget(item?.attachTo)
         return (
           <button
             className={cn(
@@ -114,14 +103,8 @@ export function ItemCatalog({
                 loading="eager"
                 src={resolveCdnUrl(item.thumbnail) || ''}
               />
-              {attachmentIcon && (
-                <div className="absolute right-1 bottom-1 flex h-4 w-4 items-center justify-center rounded bg-black/60">
-                  <img
-                    alt={item.attachTo === 'ceiling' ? 'Ceiling attachment' : 'Wall attachment'}
-                    className="h-4 w-4"
-                    src={attachmentIcon}
-                  />
-                </div>
+              {snapTarget && (
+                <SnapTargetBadge className="absolute right-1 bottom-1" target={snapTarget} />
               )}
             </div>
             <span className="truncate px-0.5 text-left font-medium text-[11px] text-muted-foreground group-hover:text-foreground">

packages/editor/src/components/ui/sidebar/panels/settings-panel/keyboard-shortcuts-dialog.tsx

@@ -71,7 +71,32 @@ const SHORTCUT_CATEGORIES: ShortcutCategory[] = [
       {
         keys: ['Cmd/Ctrl', 'Left click'],
         action: 'Add or remove an object from multi-selection',
-        note: 'Works while in Select mode.',
+        note: 'Works in Select mode on the 3D canvas, the 2D floor plan, and the scene graph.',
+      },
+      {
+        keys: ['Shift', 'Left click'],
+        action: 'Add or remove an object from canvas multi-selection',
+        note: 'In the scene graph, Shift-click selects the visible range like a file browser.',
+      },
+    ],
+  },
+  {
+    title: 'Direct Manipulation',
+    shortcuts: [
+      {
+        keys: ['Cmd/Ctrl', 'Left click'],
+        action: 'Move the selected movable object under the cursor',
+        note: 'Drag in Select mode. Guided snapping and guides are enabled by default.',
+      },
+      {
+        keys: ['Cmd/Ctrl', 'Right click'],
+        action: 'Rotate the selected object under the cursor',
+        note: 'Drag left or right in Select mode. Rotation snaps to 15° increments by default.',
+      },
+      {
+        keys: ['Cmd/Ctrl', 'Shift', 'Right click'],
+        action: 'Rotate freely',
+        note: 'Hold Shift during the drag to bypass the 15° rotation increment.',
       },
     ],
   },
@@ -80,13 +105,13 @@ const SHORTCUT_CATEGORIES: ShortcutCategory[] = [
     shortcuts: [
       {
         keys: ['Shift'],
-        action: 'Draw at any angle, bypassing the default 15° angle snap',
-        note: 'Hold while drawing walls, fences, slabs, ceilings, and zones.',
+        action: 'Bypass guided snapping and angle constraints',
+        note: 'Hold during the active gesture. Passive guide or measurement feedback may stay visible.',
       },
       {
         keys: ['Shift'],
         action: 'Rotate freely, bypassing the default 15° rotation snap',
-        note: 'Hold while dragging a rotate handle.',
+        note: 'Hold while dragging a rotate handle or direct-rotation gesture.',
       },
     ],
   },
@@ -162,7 +187,8 @@ export function KeyboardShortcutsDialog() {
         <DialogHeader className="shrink-0 border-b px-6 py-4">
           <DialogTitle>Keyboard Shortcuts</DialogTitle>
           <DialogDescription>
-            Shortcuts are context-aware and depend on the current phase or tool.
+            Shortcuts are context-aware. Guided constraints are enabled by default; hold Shift
+            during an active gesture to build freely.
           </DialogDescription>
         </DialogHeader>
 

packages/editor/src/components/ui/sidebar/panels/site-panel/chimney-tree-node.tsx

@@ -2,6 +2,7 @@ import { type AnyNodeId, type ChimneyNode, useScene } from '@pascal-app/core'
 import { useViewer } from '@pascal-app/viewer'
 import Image from 'next/image'
 import { memo, useCallback, useState } from 'react'
+import { SnapTargetIcon } from '../../../snap-target-badge'
 import useEditor from './../../../../../store/use-editor'
 import { InlineRenameInput } from './inline-rename-input'
 import { focusTreeNode, handleTreeSelection, TreeNodeWrapper } from './tree-node'
@@ -51,13 +52,15 @@ export const ChimneyTreeNode = memo(function ChimneyTreeNode({
       expanded={false}
       hasChildren={false}
       icon={
-        <Image
-          alt=""
-          className="object-contain opacity-60"
-          height={14}
-          src="/icons/roof.png"
-          width={14}
-        />
+        <SnapTargetIcon target="roof">
+          <Image
+            alt=""
+            className="object-contain opacity-60"
+            height={14}
+            src="/icons/roof.png"
+            width={14}
+          />
+        </SnapTargetIcon>
       }
       isHovered={isHovered}
       isLast={isLast}

packages/editor/src/components/ui/sidebar/panels/site-panel/door-tree-node.tsx

@@ -1,9 +1,10 @@
 'use client'
 
-import { type AnyNodeId, useScene } from '@pascal-app/core'
+import { type AnyNodeId, type DoorNode, useScene } from '@pascal-app/core'
 import { useViewer } from '@pascal-app/viewer'
 import Image from 'next/image'
 import { memo, useCallback, useState } from 'react'
+import { resolveNodeSnapTarget, SnapTargetIcon } from '../../../snap-target-badge'
 import useEditor from './../../../../../store/use-editor'
 import { InlineRenameInput } from './inline-rename-input'
 import { focusTreeNode, handleTreeSelection, TreeNodeWrapper } from './tree-node'
@@ -22,6 +23,7 @@ export const DoorTreeNode = memo(function DoorTreeNode({
 }: DoorTreeNodeProps) {
   const [isEditing, setIsEditing] = useState(false)
   const isVisible = useScene((s) => s.nodes[nodeId as AnyNodeId]?.visible !== false)
+  const node = useScene((s) => s.nodes[nodeId] as DoorNode | undefined)
   const isSelected = useViewer((state) => state.selection.selectedIds.includes(nodeId))
   const isHovered = useViewer((state) => state.hoveredId === nodeId)
   const setSelection = useViewer((state) => state.setSelection)
@@ -45,6 +47,7 @@ export const DoorTreeNode = memo(function DoorTreeNode({
 
   const handleStartEditing = useCallback(() => setIsEditing(true), [])
   const handleStopEditing = useCallback(() => setIsEditing(false), [])
+  const snapTarget = resolveNodeSnapTarget(node) ?? 'wall'
 
   return (
     <TreeNodeWrapper
@@ -53,7 +56,9 @@ export const DoorTreeNode = memo(function DoorTreeNode({
       expanded={false}
       hasChildren={false}
       icon={
-        <Image alt="" className="object-contain" height={14} src="/icons/door.png" width={14} />
+        <SnapTargetIcon target={snapTarget}>
+          <Image alt="" className="object-contain" height={14} src="/icons/door.png" width={14} />
+        </SnapTargetIcon>
       }
       isHovered={isHovered}
       isLast={isLast}

packages/editor/src/components/ui/sidebar/panels/site-panel/dormer-tree-node.tsx

@@ -2,6 +2,7 @@ import { type AnyNodeId, type DormerNode, useScene } from '@pascal-app/core'
 import { useViewer } from '@pascal-app/viewer'
 import Image from 'next/image'
 import { memo, useCallback, useState } from 'react'
+import { SnapTargetIcon } from '../../../snap-target-badge'
 import useEditor from './../../../../../store/use-editor'
 import { InlineRenameInput } from './inline-rename-input'
 import { focusTreeNode, handleTreeSelection, TreeNodeWrapper } from './tree-node'
@@ -57,13 +58,15 @@ export const DormerTreeNode = memo(function DormerTreeNode({
       expanded={false}
       hasChildren={false}
       icon={
-        <Image
-          alt=""
-          className="object-contain opacity-60"
-          height={14}
-          src="/icons/roof.png"
-          width={14}
-        />
+        <SnapTargetIcon target="roof">
+          <Image
+            alt=""
+            className="object-contain opacity-60"
+            height={14}
+            src="/icons/roof.png"
+            width={14}
+          />
+        </SnapTargetIcon>
       }
       isHovered={isHovered}
       isLast={isLast}

packages/editor/src/components/ui/sidebar/panels/site-panel/gutter-tree-node.tsx

@@ -2,6 +2,7 @@ import { type AnyNodeId, type GutterNode, useScene } from '@pascal-app/core'
 import { useViewer } from '@pascal-app/viewer'
 import Image from 'next/image'
 import { memo, useCallback, useState } from 'react'
+import { SnapTargetIcon } from '../../../snap-target-badge'
 import useEditor from './../../../../../store/use-editor'
 import { InlineRenameInput } from './inline-rename-input'
 import { focusTreeNode, handleTreeSelection, TreeNodeWrapper } from './tree-node'
@@ -51,13 +52,15 @@ export const GutterTreeNode = memo(function GutterTreeNode({
       expanded={false}
       hasChildren={false}
       icon={
-        <Image
-          alt=""
-          className="object-contain opacity-60"
-          height={14}
-          src="/icons/roof.png"
-          width={14}
-        />
+        <SnapTargetIcon target="roof">
+          <Image
+            alt=""
+            className="object-contain opacity-60"
+            height={14}
+            src="/icons/roof.png"
+            width={14}
+          />
+        </SnapTargetIcon>
       }
       isHovered={isHovered}
       isLast={isLast}

packages/editor/src/components/ui/sidebar/panels/site-panel/item-tree-node.tsx

@@ -3,9 +3,15 @@ import { useViewer } from '@pascal-app/viewer'
 import Image from 'next/image'
 import { memo, useCallback, useEffect, useState } from 'react'
 import { useShallow } from 'zustand/react/shallow'
-import useEditor from './../../../../../store/use-editor'
+import { resolveNodeSnapTarget, SnapTargetIcon } from '../../../snap-target-badge'
 import { InlineRenameInput } from './inline-rename-input'
-import { focusTreeNode, handleTreeSelection, TreeNode, TreeNodeWrapper } from './tree-node'
+import {
+  focusTreeNode,
+  handleTreeSelection,
+  routeTreeSelectionToNode,
+  TreeNode,
+  TreeNodeWrapper,
+} from './tree-node'
 import { TreeNodeActions } from './tree-node-actions'
 
 const CATEGORY_ICONS: Record<string, string> = {
@@ -35,7 +41,8 @@ export const ItemTreeNode = memo(function ItemTreeNode({
   const children = useScene(
     useShallow((s) => (s.nodes[nodeId] as ItemNode | undefined)?.children ?? []),
   )
-  const asset = useScene((s) => (s.nodes[nodeId] as ItemNode | undefined)?.asset)
+  const node = useScene((s) => s.nodes[nodeId] as ItemNode | undefined)
+  const asset = node?.asset
   const isSelected = useViewer((state) => state.selection.selectedIds.includes(nodeId))
   const isHovered = useViewer((state) => state.hoveredId === nodeId)
   const setSelection = useViewer((state) => state.setSelection)
@@ -63,17 +70,15 @@ export const ItemTreeNode = memo(function ItemTreeNode({
   const handleClick = useCallback(
     (e: React.MouseEvent) => {
       e.stopPropagation()
-      const handled = handleTreeSelection(
+      handleTreeSelection(
         e,
         nodeId,
         useViewer.getState().selection.selectedIds,
         setSelection,
       )
-      if (!handled && useEditor.getState().phase === 'structure') {
-        useEditor.getState().setPhase('furnish')
-      }
+      routeTreeSelectionToNode(node)
     },
-    [nodeId, setSelection],
+    [node, nodeId, setSelection],
   )
 
   const handleDoubleClick = useCallback(() => focusTreeNode(nodeId), [nodeId])
@@ -84,6 +89,7 @@ export const ItemTreeNode = memo(function ItemTreeNode({
   const handleStopEditing = useCallback(() => setIsEditing(false), [])
 
   const iconSrc = CATEGORY_ICONS[asset?.category ?? ''] || '/icons/couch.png'
+  const snapTarget = resolveNodeSnapTarget(node)
   const defaultName = asset?.name || 'Item'
   const hasChildren = children.length > 0
 
@@ -93,7 +99,15 @@ export const ItemTreeNode = memo(function ItemTreeNode({
       depth={depth}
       expanded={expanded}
       hasChildren={hasChildren}
-      icon={<Image alt="" className="object-contain" height={14} src={iconSrc} width={14} />}
+      icon={
+        snapTarget ? (
+          <SnapTargetIcon target={snapTarget}>
+            <Image alt="" className="object-contain" height={14} src={iconSrc} width={14} />
+          </SnapTargetIcon>
+        ) : (
+          <Image alt="" className="object-contain" height={14} src={iconSrc} width={14} />
+        )
+      }
       isHovered={isHovered}
       isLast={isLast}
       isSelected={isSelected}

packages/editor/src/components/ui/sidebar/panels/site-panel/registry-tree-node.tsx

@@ -2,9 +2,14 @@ import { type AnyNodeId, nodeRegistry, useScene } from '@pascal-app/core'
 import { useViewer } from '@pascal-app/viewer'
 import Image from 'next/image'
 import { memo, useCallback, useState } from 'react'
-import useEditor from './../../../../../store/use-editor'
+import { resolveNodeSnapTarget, SnapTargetIcon } from '../../../snap-target-badge'
 import { InlineRenameInput } from './inline-rename-input'
-import { focusTreeNode, handleTreeSelection, TreeNodeWrapper } from './tree-node'
+import {
+  focusTreeNode,
+  handleTreeSelection,
+  routeTreeSelectionToNode,
+  TreeNodeWrapper,
+} from './tree-node'
 import { TreeNodeActions } from './tree-node-actions'
 
 interface RegistryTreeNodeProps {
@@ -36,22 +41,21 @@ export const RegistryTreeNode = memo(function RegistryTreeNode({
   const presentation = node ? nodeRegistry.get(node.type)?.presentation : undefined
   const icon = presentation?.icon
   const iconSrc = icon?.kind === 'url' ? icon.src : '/icons/roof.png'
+  const snapTarget = resolveNodeSnapTarget(node)
   const defaultName = node?.name || presentation?.label || 'Node'
 
   const handleClick = useCallback(
     (e: React.MouseEvent) => {
       e.stopPropagation()
-      const handled = handleTreeSelection(
+      handleTreeSelection(
         e,
         nodeId,
         useViewer.getState().selection.selectedIds,
         setSelection,
       )
-      if (!handled && useEditor.getState().phase === 'furnish') {
-        useEditor.getState().setPhase('structure')
-      }
+      routeTreeSelectionToNode(node)
     },
-    [nodeId, setSelection],
+    [node, nodeId, setSelection],
   )
 
   return (
@@ -61,13 +65,25 @@ export const RegistryTreeNode = memo(function RegistryTreeNode({
       expanded={false}
       hasChildren={false}
       icon={
-        <Image
-          alt=""
-          className="object-contain opacity-60"
-          height={14}
-          src={iconSrc}
-          width={14}
-        />
+        snapTarget ? (
+          <SnapTargetIcon target={snapTarget}>
+            <Image
+              alt=""
+              className="object-contain opacity-60"
+              height={14}
+              src={iconSrc}
+              width={14}
+            />
+          </SnapTargetIcon>
+        ) : (
+          <Image
+            alt=""
+            className="object-contain opacity-60"
+            height={14}
+            src={iconSrc}
+            width={14}
+          />
+        )
       }
       isHovered={isHovered}
       isLast={isLast}

packages/editor/src/components/ui/sidebar/panels/site-panel/shelf-tree-node.tsx

@@ -5,9 +5,14 @@ import { useViewer } from '@pascal-app/viewer'
 import Image from 'next/image'
 import { memo, useCallback, useEffect, useState } from 'react'
 import { useShallow } from 'zustand/react/shallow'
-import useEditor from './../../../../../store/use-editor'
 import { InlineRenameInput } from './inline-rename-input'
-import { focusTreeNode, handleTreeSelection, TreeNode, TreeNodeWrapper } from './tree-node'
+import {
+  focusTreeNode,
+  handleTreeSelection,
+  routeTreeSelectionToNode,
+  TreeNode,
+  TreeNodeWrapper,
+} from './tree-node'
 import { TreeNodeActions } from './tree-node-actions'
 
 interface ShelfTreeNodeProps {
@@ -34,6 +39,7 @@ export const ShelfTreeNode = memo(function ShelfTreeNode({
   const children = useScene(
     useShallow((s) => (s.nodes[nodeId] as ShelfNode | undefined)?.children ?? []),
   )
+  const node = useScene((s) => s.nodes[nodeId] as ShelfNode | undefined)
   const isSelected = useViewer((state) => state.selection.selectedIds.includes(nodeId))
   const isHovered = useViewer((state) => state.hoveredId === nodeId)
   const setSelection = useViewer((state) => state.setSelection)
@@ -63,17 +69,15 @@ export const ShelfTreeNode = memo(function ShelfTreeNode({
   const handleClick = useCallback(
     (e: React.MouseEvent) => {
       e.stopPropagation()
-      const handled = handleTreeSelection(
+      handleTreeSelection(
         e,
         nodeId,
         useViewer.getState().selection.selectedIds,
         setSelection,
       )
-      if (!handled && useEditor.getState().phase === 'furnish') {
-        useEditor.getState().setPhase('structure')
-      }
+      routeTreeSelectionToNode(node)
     },
-    [nodeId, setSelection],
+    [node, nodeId, setSelection],
   )
 
   const handleDoubleClick = useCallback(() => focusTreeNode(nodeId), [nodeId])

packages/editor/src/components/ui/sidebar/panels/site-panel/solar-panel-tree-node.tsx

@@ -2,6 +2,7 @@ import { type AnyNodeId, type SolarPanelNode, useScene } from '@pascal-app/core'
 import { useViewer } from '@pascal-app/viewer'
 import Image from 'next/image'
 import { memo, useCallback, useState } from 'react'
+import { SnapTargetIcon } from '../../../snap-target-badge'
 import useEditor from './../../../../../store/use-editor'
 import { InlineRenameInput } from './inline-rename-input'
 import { focusTreeNode, handleTreeSelection, TreeNodeWrapper } from './tree-node'
@@ -51,13 +52,15 @@ export const SolarPanelTreeNode = memo(function SolarPanelTreeNode({
       expanded={false}
       hasChildren={false}
       icon={
-        <Image
-          alt=""
-          className="object-contain opacity-60"
-          height={14}
-          src="/icons/roof.png"
-          width={14}
-        />
+        <SnapTargetIcon target="roof">
+          <Image
+            alt=""
+            className="object-contain opacity-60"
+            height={14}
+            src="/icons/roof.png"
+            width={14}
+          />
+        </SnapTargetIcon>
       }
       isHovered={isHovered}
       isLast={isLast}

packages/editor/src/components/ui/sidebar/panels/site-panel/tree-node.tsx

@@ -1,7 +1,10 @@
-import { type AnyNodeId, emitter, useScene } from '@pascal-app/core'
+import { type AnyNode, type AnyNodeId, emitter, useScene } from '@pascal-app/core'
+import { useViewer } from '@pascal-app/viewer'
 import { ChevronRight } from 'lucide-react'
 import { AnimatePresence, motion } from 'motion/react'
 import { forwardRef, memo, useEffect, useRef } from 'react'
+import { resolveNodeSelectionTarget } from '../../../../../lib/selection-routing'
+import useEditor from '../../../../../store/use-editor'
 
 export function handleTreeSelection(
   e: React.MouseEvent,
@@ -53,6 +56,31 @@ export function focusTreeNode(nodeId: AnyNodeId) {
   emitter.emit('camera-controls:focus', { nodeId })
 }
 
+export function routeTreeSelectionToNode(node: AnyNode | null | undefined) {
+  const target = node ? resolveNodeSelectionTarget(node) : null
+  if (!target) return
+
+  const selectedIdsAfterClick = useViewer.getState().selection.selectedIds
+  const editor = useEditor.getState()
+  let didRoute = false
+
+  if (target.phase !== editor.phase) {
+    editor.setPhase(target.phase)
+    didRoute = true
+  }
+  if (
+    target.phase === 'structure' &&
+    target.structureLayer &&
+    target.structureLayer !== useEditor.getState().structureLayer
+  ) {
+    useEditor.getState().setStructureLayer(target.structureLayer)
+    didRoute = true
+  }
+  if (didRoute) {
+    useViewer.getState().setSelection({ selectedIds: selectedIdsAfterClick })
+  }
+}
+
 import { cn } from '../../../../../lib/utils'
 import { BuildingTreeNode } from './building-tree-node'
 import { CeilingTreeNode } from './ceiling-tree-node'
@@ -102,6 +130,7 @@ const treeNodeByType: Record<
   ceiling: CeilingTreeNode,
   chimney: ChimneyTreeNode,
   dormer: DormerTreeNode,
+  downspout: RegistryTreeNode,
   'solar-panel': SolarPanelTreeNode,
   column: ColumnTreeNode,
   elevator: ElevatorTreeNode,
@@ -266,10 +295,10 @@ export const TreeNodeWrapper = forwardRef<HTMLDivElement, TreeNodeWrapperProps>(
               </motion.div>
             ) : null}
           </button>
-          <div className="flex min-w-0 flex-1 items-center gap-1.5">
+          <div className="flex min-w-0 flex-1 items-center gap-2">
             <span
               className={cn(
-                'flex h-4 w-4 shrink-0 items-center justify-center transition-all duration-200',
+                'flex h-5 w-5 shrink-0 items-center justify-center transition-all duration-200',
                 !isSelected && 'opacity-60 grayscale',
               )}
             >

packages/editor/src/components/ui/sidebar/panels/site-panel/window-tree-node.tsx

@@ -1,9 +1,10 @@
 'use client'
 
-import { type AnyNodeId, useScene } from '@pascal-app/core'
+import { type AnyNodeId, type WindowNode, useScene } from '@pascal-app/core'
 import { useViewer } from '@pascal-app/viewer'
 import Image from 'next/image'
 import { memo, useCallback, useState } from 'react'
+import { resolveNodeSnapTarget, SnapTargetIcon } from '../../../snap-target-badge'
 import useEditor from './../../../../../store/use-editor'
 import { InlineRenameInput } from './inline-rename-input'
 import { focusTreeNode, handleTreeSelection, TreeNodeWrapper } from './tree-node'
@@ -22,6 +23,7 @@ export const WindowTreeNode = memo(function WindowTreeNode({
 }: WindowTreeNodeProps) {
   const [isEditing, setIsEditing] = useState(false)
   const isVisible = useScene((s) => s.nodes[nodeId as AnyNodeId]?.visible !== false)
+  const node = useScene((s) => s.nodes[nodeId] as WindowNode | undefined)
   const isSelected = useViewer((state) => state.selection.selectedIds.includes(nodeId))
   const isHovered = useViewer((state) => state.hoveredId === nodeId)
   const setSelection = useViewer((state) => state.setSelection)
@@ -45,6 +47,7 @@ export const WindowTreeNode = memo(function WindowTreeNode({
 
   const handleStartEditing = useCallback(() => setIsEditing(true), [])
   const handleStopEditing = useCallback(() => setIsEditing(false), [])
+  const snapTarget = resolveNodeSnapTarget(node) ?? 'wall'
 
   return (
     <TreeNodeWrapper
@@ -53,7 +56,9 @@ export const WindowTreeNode = memo(function WindowTreeNode({
       expanded={false}
       hasChildren={false}
       icon={
-        <Image alt="" className="object-contain" height={14} src="/icons/window.png" width={14} />
+        <SnapTargetIcon target={snapTarget}>
+          <Image alt="" className="object-contain" height={14} src="/icons/window.png" width={14} />
+        </SnapTargetIcon>
       }
       isHovered={isHovered}
       isLast={isLast}

packages/editor/src/components/ui/snap-target-badge.test.tsx

@@ -0,0 +1,40 @@
+import { describe, expect, test } from 'bun:test'
+import type { AnyNode } from '@pascal-app/core'
+import { resolveAssetSnapTarget, resolveNodeSnapTarget } from './snap-target-badge'
+
+describe('resolveAssetSnapTarget', () => {
+  test('maps wall-hosted catalog assets to a wall badge', () => {
+    expect(resolveAssetSnapTarget('wall')).toBe('wall')
+    expect(resolveAssetSnapTarget('wall-side')).toBe('wall')
+  })
+
+  test('maps ceiling-hosted catalog assets to a ceiling badge', () => {
+    expect(resolveAssetSnapTarget('ceiling')).toBe('ceiling')
+  })
+
+  test('does not badge floor assets', () => {
+    expect(resolveAssetSnapTarget(undefined)).toBeNull()
+  })
+})
+
+describe('resolveNodeSnapTarget', () => {
+  test('prefers roof attachment when a node is hosted by a roof segment', () => {
+    const node = {
+      id: 'window_1',
+      type: 'window',
+      roofSegmentId: 'roof-segment_1',
+    } as unknown as AnyNode
+
+    expect(resolveNodeSnapTarget(node)).toBe('roof')
+  })
+
+  test('badges gutter-hosted downspouts as roof accessories', () => {
+    const node = {
+      id: 'downspout_1',
+      type: 'downspout',
+      gutterId: 'gutter_1',
+    } as unknown as AnyNode
+
+    expect(resolveNodeSnapTarget(node)).toBe('roof')
+  })
+})

packages/editor/src/components/ui/snap-target-badge.tsx

@@ -0,0 +1,88 @@
+import type { AnyNode, AssetInput } from '@pascal-app/core'
+import type { ReactNode } from 'react'
+import { cn } from '../../lib/utils'
+
+export type SnapTarget = 'wall' | 'ceiling' | 'roof'
+export type SnapTargetBadgeSize = 'tile' | 'tree'
+
+const SNAP_TARGET_ICONS: Record<SnapTarget, string> = {
+  wall: '/icons/wall.png',
+  ceiling: '/icons/ceiling.png',
+  roof: '/icons/roof.png',
+}
+
+const SNAP_TARGET_LABELS: Record<SnapTarget, string> = {
+  wall: 'Wall attachment',
+  ceiling: 'Ceiling attachment',
+  roof: 'Roof attachment',
+}
+
+const SNAP_TARGET_BADGE_SIZE_CLASSES: Record<SnapTargetBadgeSize, string> = {
+  tile: 'h-6 w-6 rounded-md',
+  tree: 'h-3.5 w-3.5 rounded-[3px]',
+}
+
+const SNAP_TARGET_ICON_SIZE_CLASSES: Record<SnapTargetBadgeSize, string> = {
+  tile: 'h-[18px] w-[18px]',
+  tree: 'h-2.5 w-2.5',
+}
+
+export function resolveAssetSnapTarget(attachTo: AssetInput['attachTo']): SnapTarget | null {
+  if (attachTo === 'wall' || attachTo === 'wall-side') return 'wall'
+  if (attachTo === 'ceiling') return 'ceiling'
+  return null
+}
+
+export function resolveNodeSnapTarget(node: AnyNode | null | undefined): SnapTarget | null {
+  if (!node) return null
+  if ('roofSegmentId' in node && typeof node.roofSegmentId === 'string') return 'roof'
+  if (node.type === 'downspout') return 'roof'
+  if (node.type === 'door' || node.type === 'window') return 'wall'
+  if (node.type === 'item') return resolveAssetSnapTarget(node.asset?.attachTo)
+  return null
+}
+
+export function SnapTargetBadge({
+  className,
+  size = 'tile',
+  target,
+}: {
+  className?: string
+  size?: SnapTargetBadgeSize
+  target: SnapTarget
+}) {
+  return (
+    <span
+      className={cn(
+        'flex items-center justify-center bg-black/65 ring-1 ring-white/20',
+        SNAP_TARGET_BADGE_SIZE_CLASSES[size],
+        className,
+      )}
+    >
+      <img
+        alt={SNAP_TARGET_LABELS[target]}
+        className={cn('object-contain', SNAP_TARGET_ICON_SIZE_CLASSES[size])}
+        src={SNAP_TARGET_ICONS[target]}
+      />
+    </span>
+  )
+}
+
+export function SnapTargetIcon({
+  children,
+  target,
+}: {
+  children: ReactNode
+  target: SnapTarget
+}) {
+  return (
+    <span className="relative inline-flex h-5 w-5 items-center justify-center">
+      {children}
+      <SnapTargetBadge
+        className="-right-1.5 -bottom-1.5 absolute"
+        size="tree"
+        target={target}
+      />
+    </span>
+  )
+}

packages/editor/src/index.tsx

@@ -165,6 +165,13 @@ export {
 } from './components/ui/sidebar/panels/settings-panel'
 export type { SitePanelProps } from './components/ui/sidebar/panels/site-panel'
 export type { SidebarTab } from './components/ui/sidebar/tab-bar'
+export {
+  resolveAssetSnapTarget,
+  resolveNodeSnapTarget,
+  type SnapTarget,
+  SnapTargetBadge,
+  SnapTargetIcon,
+} from './components/ui/snap-target-badge'
 export type { SaveStatus } from './hooks/use-auto-save'
 // useDragAction is the React-side glue for the registry's DragAction
 // primitive. Public so registry-driven kinds (Phase 5+ Stage D ports)
@@ -226,6 +233,7 @@ export {
   linearUnitToMeters,
   metersToLinearUnit,
 } from './lib/measurements'
+export { consumePlacementDragRelease } from './lib/placement-drag-release'
 export {
   addFreshPlacementMetadata,
   getPlacementMetadataRecord,

packages/editor/src/lib/contextual-help.test.ts

@@ -0,0 +1,84 @@
+import { describe, expect, test } from 'bun:test'
+import { resolveSelectModeHelpHints } from './contextual-help'
+
+describe('resolveSelectModeHelpHints', () => {
+  test('stays hidden in idle select mode with no selection', () => {
+    expect(
+      resolveSelectModeHelpHints({
+        selectedCount: 0,
+        hasMovableSelection: false,
+        hasRotatableSelection: false,
+        commandPressed: false,
+        shiftPressed: false,
+      }),
+    ).toEqual([])
+  })
+
+  test('shows multi-select guidance when a modifier is held without selection', () => {
+    expect(
+      resolveSelectModeHelpHints({
+        selectedCount: 0,
+        hasMovableSelection: false,
+        hasRotatableSelection: false,
+        commandPressed: true,
+        shiftPressed: false,
+      }),
+    ).toEqual([
+      {
+        keys: ['Cmd/Ctrl', 'Left click'],
+        label: 'Add or remove objects from the selection',
+        active: true,
+      },
+    ])
+  })
+
+  test('shows direct manipulation tips for selected movable and rotatable nodes', () => {
+    const hints = resolveSelectModeHelpHints({
+      selectedCount: 1,
+      hasMovableSelection: true,
+      hasRotatableSelection: true,
+      commandPressed: false,
+      shiftPressed: false,
+    })
+
+    expect(hints).toContainEqual({
+      keys: ['Cmd/Ctrl', 'Left click'],
+      label: 'Drag selected movable object',
+    })
+    expect(hints).toContainEqual({
+      keys: ['Cmd/Ctrl', 'Right click'],
+      label: 'Drag left or right to rotate selected object',
+    })
+    expect(hints).toContainEqual({
+      keys: ['Shift'],
+      label: 'Hold to bypass snaps and angle steps',
+      active: false,
+    })
+  })
+
+  test('switches direct manipulation labels while constraints are bypassed', () => {
+    const hints = resolveSelectModeHelpHints({
+      selectedCount: 1,
+      hasMovableSelection: true,
+      hasRotatableSelection: true,
+      commandPressed: true,
+      shiftPressed: true,
+    })
+
+    expect(hints).toContainEqual({
+      keys: ['Cmd/Ctrl', 'Left click'],
+      label: 'Drag selected movable object freely',
+      active: true,
+    })
+    expect(hints).toContainEqual({
+      keys: ['Cmd/Ctrl', 'Right click'],
+      label: 'Drag left or right to rotate freely',
+      active: true,
+    })
+    expect(hints).toContainEqual({
+      keys: ['Shift'],
+      label: 'Guided constraints bypassed',
+      active: true,
+    })
+  })
+})

packages/editor/src/lib/contextual-help.ts

@@ -0,0 +1,101 @@
+export type ContextualShortcutHint = {
+  keys: string[]
+  label: string
+  active?: boolean
+}
+
+export type SelectModeHelpContext = {
+  selectedCount: number
+  hasMovableSelection: boolean
+  hasRotatableSelection: boolean
+  commandPressed: boolean
+  shiftPressed: boolean
+}
+
+const COMMAND_KEY = 'Cmd/Ctrl'
+const LEFT_CLICK = 'Left click'
+const RIGHT_CLICK = 'Right click'
+const SHIFT_KEY = 'Shift'
+
+export function resolveSelectModeHelpHints({
+  selectedCount,
+  hasMovableSelection,
+  hasRotatableSelection,
+  commandPressed,
+  shiftPressed,
+}: SelectModeHelpContext): ContextualShortcutHint[] {
+  const hints: ContextualShortcutHint[] = []
+
+  if (selectedCount === 0) {
+    if (!commandPressed && !shiftPressed) return hints
+
+    hints.push({
+      keys: [commandPressed ? COMMAND_KEY : SHIFT_KEY, LEFT_CLICK],
+      label: 'Add or remove objects from the selection',
+      active: true,
+    })
+    return hints
+  }
+
+  if (commandPressed) {
+    if (hasMovableSelection) {
+      hints.push({
+        keys: [COMMAND_KEY, LEFT_CLICK],
+        label: shiftPressed
+          ? 'Drag selected movable object freely'
+          : 'Drag selected movable object with guides',
+        active: true,
+      })
+    }
+
+    if (hasRotatableSelection) {
+      hints.push({
+        keys: [COMMAND_KEY, RIGHT_CLICK],
+        label: shiftPressed
+          ? 'Drag left or right to rotate freely'
+          : 'Drag left or right to rotate',
+        active: true,
+      })
+    }
+
+    hints.push({
+      keys: [COMMAND_KEY, LEFT_CLICK],
+      label: 'Click without dragging to add or remove objects',
+      active: commandPressed && !shiftPressed,
+    })
+  } else {
+    if (hasMovableSelection) {
+      hints.push({
+        keys: [COMMAND_KEY, LEFT_CLICK],
+        label: 'Drag selected movable object',
+      })
+    }
+
+    if (hasRotatableSelection) {
+      hints.push({
+        keys: [COMMAND_KEY, RIGHT_CLICK],
+        label: 'Drag left or right to rotate selected object',
+      })
+    }
+  }
+
+  hints.push({
+    keys: [SHIFT_KEY],
+    label: shiftPressed ? 'Guided constraints bypassed' : 'Hold to bypass snaps and angle steps',
+    active: shiftPressed,
+  })
+
+  if (!commandPressed) {
+    hints.push({
+      keys: [COMMAND_KEY, LEFT_CLICK],
+      label: 'Add or remove objects from the selection',
+    })
+    hints.push({
+      keys: [SHIFT_KEY, LEFT_CLICK],
+      label: 'Add or remove objects on the canvas',
+      active: shiftPressed,
+    })
+  }
+
+  return hints
+}

packages/editor/src/lib/direct-manipulation.test.ts

@@ -0,0 +1,93 @@
+import { describe, expect, test } from 'bun:test'
+import {
+  type AnyNode,
+  type AnyNodeDefinition,
+  DEFAULT_ANGLE_STEP,
+  nodeRegistry,
+  registerNode,
+} from '@pascal-app/core'
+import { z } from 'zod'
+import {
+  canDirectMoveNode,
+  resolveDirectRotationDragDelta,
+  snapDirectRotationDelta,
+} from './direct-manipulation'
+
+function registerTestDefinition(kind: string, overrides: Partial<AnyNodeDefinition>) {
+  if (nodeRegistry.has(kind)) return
+  registerNode({
+    kind,
+    schemaVersion: 1,
+    schema: z.object({ type: z.literal(kind) }) as never,
+    category: 'structure',
+    defaults: () => ({ type: kind }) as never,
+    capabilities: {},
+    renderer: { kind: 'parametric', module: async () => ({ default: () => null }) },
+    ...overrides,
+  } as AnyNodeDefinition)
+}
+
+describe('snapDirectRotationDelta', () => {
+  test('snaps rotation deltas to the default angle increment', () => {
+    expect(snapDirectRotationDelta(DEFAULT_ANGLE_STEP * 0.49, false)).toBe(0)
+    expect(snapDirectRotationDelta(DEFAULT_ANGLE_STEP * 0.51, false)).toBeCloseTo(
+      DEFAULT_ANGLE_STEP,
+    )
+    expect(snapDirectRotationDelta(DEFAULT_ANGLE_STEP * -1.49, false)).toBeCloseTo(
+      -DEFAULT_ANGLE_STEP,
+    )
+  })
+
+  test('keeps the raw rotation delta while free-rotating', () => {
+    const rawDelta = DEFAULT_ANGLE_STEP * 0.42
+    expect(snapDirectRotationDelta(rawDelta, true)).toBe(rawDelta)
+  })
+})
+
+describe('resolveDirectRotationDragDelta', () => {
+  test('maps horizontal pointer motion to the direct rotation delta direction', () => {
+    const radiansPerPixel = DEFAULT_ANGLE_STEP / 12
+
+    expect(resolveDirectRotationDragDelta(100, 112, radiansPerPixel, false)).toBeCloseTo(
+      -DEFAULT_ANGLE_STEP,
+    )
+    expect(resolveDirectRotationDragDelta(100, 88, radiansPerPixel, false)).toBeCloseTo(
+      DEFAULT_ANGLE_STEP,
+    )
+  })
+
+  test('keeps unsnapped drag deltas while free-rotating', () => {
+    expect(resolveDirectRotationDragDelta(100, 103, 0.1, true)).toBeCloseTo(-0.3)
+  })
+})
+
+describe('canDirectMoveNode', () => {
+  test('excludes floorplan-only move targets from 3D direct move', () => {
+    const kind = 'direct-move-floorplan-only-test'
+    registerTestDefinition(kind, { floorplanMoveTarget: {} as never })
+
+    expect(canDirectMoveNode({ id: 'node_1', type: kind } as unknown as AnyNode)).toBe(false)
+  })
+
+  test('excludes bespoke move tools from 3D direct move', () => {
+    const kind = 'direct-move-bespoke-tool-test'
+    registerTestDefinition(kind, {
+      affordanceTools: {
+        move: async () => ({ default: () => null }),
+      } as never,
+    })
+
+    expect(canDirectMoveNode({ id: 'node_1', type: kind } as unknown as AnyNode)).toBe(false)
+  })
+
+  test('accepts nodes with the generic movable capability', () => {
+    const kind = 'direct-move-movable-test'
+    registerTestDefinition(kind, {
+      capabilities: {
+        movable: { axes: ['x', 'z'], gridSnap: true },
+      },
+    } as Partial<AnyNodeDefinition>)
+
+    expect(canDirectMoveNode({ id: 'node_1', type: kind } as unknown as AnyNode)).toBe(true)
+  })
+})

packages/editor/src/lib/direct-manipulation.ts

@@ -0,0 +1,72 @@
+import {
+  type AnyNode,
+  type ArcResizeHandle,
+  createSceneApi,
+  DEFAULT_ANGLE_STEP,
+  type HandleDescriptor,
+  nodeRegistry,
+  type SceneApi,
+  useScene,
+} from '@pascal-app/core'
+
+function resolveHandles(node: AnyNode): HandleDescriptor<AnyNode>[] {
+  const handles = nodeRegistry.get(node.type)?.handles
+  if (!handles) return []
+  return (
+    typeof handles === 'function' ? handles(node as never) : handles
+  ) as HandleDescriptor<AnyNode>[]
+}
+
+export function getDirectRotateHandle(node: AnyNode): ArcResizeHandle<AnyNode> | null {
+  for (const handle of resolveHandles(node)) {
+    if (handle.kind === 'arc-resize' && handle.shape === 'rotate') {
+      return handle as ArcResizeHandle<AnyNode>
+    }
+  }
+  return null
+}
+
+export function canDirectRotateNode(node: AnyNode): boolean {
+  return (
+    getDirectRotateHandle(node) !== null ||
+    nodeRegistry.get(node.type)?.capabilities?.rotatable !== undefined
+  )
+}
+
+export function canDirectMoveNode(node: AnyNode): boolean {
+  return nodeRegistry.get(node.type)?.capabilities?.movable !== undefined
+}
+
+export function snapDirectRotationDelta(delta: number, free: boolean): number {
+  return free ? delta : Math.round(delta / DEFAULT_ANGLE_STEP) * DEFAULT_ANGLE_STEP
+}
+
+export function resolveDirectRotationDragDelta(
+  startX: number,
+  clientX: number,
+  radiansPerPixel: number,
+  free: boolean,
+): number {
+  return snapDirectRotationDelta((startX - clientX) * radiansPerPixel, free)
+}
+
+export function resolveDirectRotationPatch(
+  node: AnyNode,
+  delta: number,
+  sceneApi: SceneApi = createSceneApi(useScene),
+): Partial<AnyNode> | null {
+  const rotateHandle = getDirectRotateHandle(node)
+  if (rotateHandle) {
+    return rotateHandle.apply(node, delta, sceneApi) as Partial<AnyNode>
+  }
+
+  const rotation = (node as { rotation?: unknown }).rotation
+  if (typeof rotation === 'number') {
+    return { rotation: rotation - delta } as Partial<AnyNode>
+  }
+  if (Array.isArray(rotation)) {
+    const [rx = 0, ry = 0, rz = 0] = rotation as [number?, number?, number?]
+    return { rotation: [rx, ry - delta, rz] } as Partial<AnyNode>
+  }
+  return null
+}

packages/editor/src/lib/floorplan/apply-alignment.test.ts

@@ -0,0 +1,25 @@
+import { afterEach, describe, expect, test } from 'bun:test'
+import useAlignmentGuides from '../../store/use-alignment-guides'
+import { applyFloorplanAlignment } from './apply-alignment'
+
+describe('applyFloorplanAlignment', () => {
+  afterEach(() => {
+    useAlignmentGuides.getState().clear()
+  })
+
+  test('can publish passive guides without applying snap', () => {
+    useAlignmentGuides.getState().clear()
+
+    const result = applyFloorplanAlignment(
+      [0.04, 2],
+      [{ nodeId: 'draft', kind: 'corner', x: 0.04, z: 2 }],
+      [{ nodeId: 'wall_a', kind: 'corner', x: 0, z: 0 }],
+      { applySnap: false },
+    )
+
+    expect(result.point).toEqual([0.04, 2])
+    expect(result.snapped).toBe(false)
+    expect(result.guides).toHaveLength(1)
+    expect(useAlignmentGuides.getState().guides).toHaveLength(1)
+  })
+})

packages/editor/src/lib/floorplan/apply-alignment.ts

@@ -30,9 +30,9 @@ export type FloorplanAlignmentResult = {
  *
  * Publishes guides to the `useAlignmentGuides` store as a side effect — set
  * on a match, cleared otherwise — so the mounted `FloorplanAlignmentGuideLayer`
- * renders them. Returns the adjusted point. When `bypass` is true (Alt held)
- * the point is returned unchanged and guides are cleared, matching the
- * "No snap" affordance the placement tools advertise.
+ * renders them. Returns the adjusted point. When `bypass` is true (Alt for
+ * alignment-only bypass, or Shift for the full guided-constraint bypass) the
+ * point is returned unchanged and guides are cleared.
  *
  * `candidates` should be gathered ONCE per drag (`collectAlignmentAnchors`);
  * the scene is stable during a single drag, so re-collecting per pointer-move
@@ -42,7 +42,7 @@ export function applyFloorplanAlignment(
   point: readonly [number, number],
   movingAnchors: AlignmentAnchor[],
   candidates: AlignmentAnchor[],
-  opts?: { bypass?: boolean; threshold?: number },
+  opts?: { applySnap?: boolean; bypass?: boolean; threshold?: number },
 ): FloorplanAlignmentResult {
   if (opts?.bypass) {
     useAlignmentGuides.getState().clear()
@@ -57,7 +57,7 @@ export function applyFloorplanAlignment(
 
   useAlignmentGuides.getState().set(result.guides)
 
-  if (!result.snap) {
+  if (!result.snap || opts?.applySnap === false) {
     return { point: [point[0], point[1]], snapped: false, guides: result.guides }
   }
   return {
@@ -81,8 +81,9 @@ export const FLOORPLAN_DRAFT_ALIGN_ID = '__floorplan_draft__'
  *
  * Used by BOTH the move-preview branch and the click-commit handler so the
  * committed vertex lands exactly where the preview showed it. Caller owns the
- * per-kind precedence (existing-wall endpoint/join snap wins; angle-snap
- * suppresses alignment) and only calls this when alignment should apply.
+ * per-kind precedence: existing-wall endpoint/join snap can still win, while
+ * angle-locked segments can pass `applySnap: false` to publish passive guide
+ * feedback without pulling the endpoint off its constrained ray.
  *
  * `excludeIds` drops those nodes' anchors from the candidate pool — used when
  * dragging a wall / fence endpoint so the moving endpoint doesn't try to
@@ -90,7 +91,12 @@ export const FLOORPLAN_DRAFT_ALIGN_ID = '__floorplan_draft__'
  */
 export function alignFloorplanDraftPoint(
   point: readonly [number, number],
-  opts?: { bypass?: boolean; threshold?: number; excludeIds?: readonly string[] },
+  opts?: {
+    applySnap?: boolean
+    bypass?: boolean
+    threshold?: number
+    excludeIds?: readonly string[]
+  },
 ): [number, number] {
   if (opts?.bypass) {
     useAlignmentGuides.getState().clear()
@@ -105,7 +111,7 @@ export function alignFloorplanDraftPoint(
     point,
     [{ nodeId: FLOORPLAN_DRAFT_ALIGN_ID, kind: 'corner', x: point[0], z: point[1] }],
     candidates,
-    { threshold: opts?.threshold },
+    { applySnap: opts?.applySnap, threshold: opts?.threshold },
   )
   return snapped
 }

packages/editor/src/lib/placement-drag-release.ts

@@ -0,0 +1,23 @@
+'use client'
+
+import useEditor from '../store/use-editor'
+
+function swallowNextClick(timeoutMs = 300) {
+  const swallow = (event: Event) => {
+    event.stopPropagation()
+    event.preventDefault()
+  }
+
+  window.addEventListener('click', swallow, { capture: true, once: true })
+  setTimeout(() => window.removeEventListener('click', swallow, { capture: true }), timeoutMs)
+}
+
+export function consumePlacementDragRelease(event: PointerEvent): boolean {
+  if (!useEditor.getState().placementDragMode) return false
+  if (event.button !== 0) return false
+
+  event.stopPropagation()
+  event.preventDefault()
+  swallowNextClick()
+  return true
+}

packages/editor/src/lib/selection-routing.test.ts

@@ -0,0 +1,79 @@
+import { describe, expect, test } from 'bun:test'
+import type { AnyNode } from '@pascal-app/core'
+import {
+  resolveNodeSelectionTarget,
+  resolveSelectedIdsForNodeClick,
+  selectionModifiersFromEvent,
+} from './selection-routing'
+
+describe('resolveSelectedIdsForNodeClick', () => {
+  test('preserves the pre-routing selection when a phase switch clears current ids', () => {
+    expect(
+      resolveSelectedIdsForNodeClick({
+        baseSelectedIds: ['wall_1'],
+        currentSelectedIds: [],
+        modifierKeys: { meta: true, ctrl: false, shift: false },
+        nodeId: 'item_1',
+      }),
+    ).toEqual(['wall_1', 'item_1'])
+  })
+
+  test('toggles from the pre-routing selection while a modifier is held', () => {
+    expect(
+      resolveSelectedIdsForNodeClick({
+        baseSelectedIds: ['wall_1', 'item_1'],
+        currentSelectedIds: [],
+        modifierKeys: { meta: false, ctrl: false, shift: true },
+        nodeId: 'item_1',
+      }),
+    ).toEqual(['wall_1'])
+  })
+})
+
+describe('selectionModifiersFromEvent', () => {
+  test('falls back to tracked modifier state when the click event omits keys', () => {
+    expect(selectionModifiersFromEvent({}, { meta: false, ctrl: true, shift: false })).toEqual({
+      meta: false,
+      ctrl: true,
+      shift: false,
+    })
+  })
+
+  test('prefers explicit event key state over stale tracked modifiers', () => {
+    expect(
+      selectionModifiersFromEvent(
+        { metaKey: false, ctrlKey: false, shiftKey: false },
+        { meta: true, ctrl: true, shift: true },
+      ),
+    ).toEqual({
+      meta: false,
+      ctrl: false,
+      shift: false,
+    })
+  })
+})
+
+describe('resolveNodeSelectionTarget', () => {
+  test('routes furniture items to furnish', () => {
+    const node = {
+      id: 'item_1',
+      type: 'item',
+      asset: { category: 'furniture' },
+    } as unknown as AnyNode
+
+    expect(resolveNodeSelectionTarget(node)).toEqual({ phase: 'furnish' })
+  })
+
+  test('routes door and window catalog items to structure', () => {
+    const node = {
+      id: 'item_1',
+      type: 'item',
+      asset: { category: 'door' },
+    } as unknown as AnyNode
+
+    expect(resolveNodeSelectionTarget(node)).toEqual({
+      phase: 'structure',
+      structureLayer: 'elements',
+    })
+  })
+})

packages/editor/src/lib/selection-routing.ts

@@ -0,0 +1,124 @@
+import { type AnyNode, type ItemNode, nodeRegistry } from '@pascal-app/core'
+
+export type SelectionModifierKeys = {
+  meta: boolean
+  ctrl: boolean
+  shift: boolean
+}
+
+export type NodeSelectionTarget = {
+  phase: 'site' | 'structure' | 'furnish'
+  structureLayer?: 'zones' | 'elements'
+}
+
+export function isSelectionModifierActive(keys: SelectionModifierKeys): boolean {
+  return keys.meta || keys.ctrl || keys.shift
+}
+
+export function selectionModifiersFromEvent(
+  event?: {
+    metaKey?: boolean
+    ctrlKey?: boolean
+    shiftKey?: boolean
+    nativeEvent?: {
+      metaKey?: boolean
+      ctrlKey?: boolean
+      shiftKey?: boolean
+    }
+  } | null,
+  fallback?: Partial<SelectionModifierKeys>,
+): SelectionModifierKeys {
+  const fromEvent = (
+    key: keyof SelectionModifierKeys,
+    eventKey: 'metaKey' | 'ctrlKey' | 'shiftKey',
+  ) => {
+    if (typeof event?.[eventKey] === 'boolean') return event[eventKey]
+    if (typeof event?.nativeEvent?.[eventKey] === 'boolean') return event.nativeEvent[eventKey]
+    return Boolean(fallback?.[key])
+  }
+
+  return {
+    meta: fromEvent('meta', 'metaKey'),
+    ctrl: fromEvent('ctrl', 'ctrlKey'),
+    shift: fromEvent('shift', 'shiftKey'),
+  }
+}
+
+export function resolveSelectedIdsForNodeClick({
+  baseSelectedIds,
+  currentSelectedIds,
+  modifierKeys,
+  nodeId,
+}: {
+  baseSelectedIds?: readonly string[]
+  currentSelectedIds: readonly string[]
+  modifierKeys: SelectionModifierKeys
+  nodeId: string
+}): string[] {
+  if (isSelectionModifierActive(modifierKeys)) {
+    const selectedIds = baseSelectedIds ?? currentSelectedIds
+    if (selectedIds.includes(nodeId)) {
+      return selectedIds.filter((id) => id !== nodeId)
+    }
+    return [...selectedIds, nodeId]
+  }
+
+  return [nodeId]
+}
+
+export function resolveNodeSelectionTarget(node: AnyNode): NodeSelectionTarget | null {
+  if (node.type === 'building') {
+    return { phase: 'site' }
+  }
+
+  if (node.type === 'zone') {
+    return {
+      phase: 'structure',
+      structureLayer: 'zones',
+    }
+  }
+
+  if (node.type === 'item') {
+    const item = node as ItemNode
+    if (item.asset.category === 'door' || item.asset.category === 'window') {
+      return {
+        phase: 'structure',
+        structureLayer: 'elements',
+      }
+    }
+    return { phase: 'furnish' }
+  }
+
+  if (
+    node.type === 'wall' ||
+    node.type === 'fence' ||
+    node.type === 'column' ||
+    node.type === 'elevator' ||
+    node.type === 'slab' ||
+    node.type === 'ceiling' ||
+    node.type === 'roof' ||
+    node.type === 'roof-segment' ||
+    node.type === 'stair' ||
+    node.type === 'stair-segment' ||
+    node.type === 'spawn' ||
+    node.type === 'window' ||
+    node.type === 'door'
+  ) {
+    return {
+      phase: 'structure',
+      structureLayer: 'elements',
+    }
+  }
+
+  const def = nodeRegistry.get(node.type)
+  if (!def) return null
+
+  if (def.category === 'furnish') {
+    return { phase: 'furnish' }
+  }
+
+  return {
+    phase: 'structure',
+    structureLayer: 'elements',
+  }
+}

packages/editor/src/store/use-direct-manipulation-feedback.ts

@@ -0,0 +1,20 @@
+import type { AnyNodeId } from '@pascal-app/core'
+import { create } from 'zustand'
+
+type DirectManipulationFeedbackState = {
+  activeRotateNodeId: AnyNodeId | null
+  setActiveRotateNodeId(nodeId: AnyNodeId | null): void
+  clearActiveRotateNodeId(nodeId?: AnyNodeId): void
+}
+
+const useDirectManipulationFeedback = create<DirectManipulationFeedbackState>((set) => ({
+  activeRotateNodeId: null,
+  setActiveRotateNodeId: (activeRotateNodeId) => set({ activeRotateNodeId }),
+  clearActiveRotateNodeId: (nodeId) =>
+    set((state) => {
+      if (nodeId !== undefined && state.activeRotateNodeId !== nodeId) return {}
+      return { activeRotateNodeId: null }
+    }),
+}))
+
+export default useDirectManipulationFeedback

packages/nodes/src/box-vent/move-tool.tsx

@@ -9,7 +9,12 @@ import {
   sceneRegistry,
   useScene,
 } from '@pascal-app/core'
-import { markToolCancelConsumed, triggerSFX, useEditor } from '@pascal-app/editor'
+import {
+  consumePlacementDragRelease,
+  markToolCancelConsumed,
+  triggerSFX,
+  useEditor,
+} from '@pascal-app/editor'
 import { useCallback, useEffect, useState } from 'react'
 import * as THREE from 'three'
 import {
@@ -59,11 +64,22 @@ export default function MoveBoxVentTool({ node }: { node: BoxVentNode }) {
 
     let lastSnap: [number, number] | null = null
     let lastTarget: RelativeRoofDragTarget | null = null
+    let committed = false
     const roofDrag = createRelativeRoofDrag(original)
 
+    const clearTarget = () => {
+      lastTarget = null
+      lastSnap = null
+      setPreviewPos(null)
+      setPreviewSurfaceQuat(null)
+    }
+
     const updatePreview = (event: RoofEvent) => {
       const target = roofDrag.resolve(event)
-      if (!target) return
+      if (!target) {
+        clearTarget()
+        return
+      }
       lastTarget = target
 
       const sx = Math.round(target.localX * 20) / 20
@@ -90,8 +106,10 @@ export default function MoveBoxVentTool({ node }: { node: BoxVentNode }) {
     }
 
     const onRoofClick = (event: RoofEvent) => {
+      if (committed) return
       const target = lastTarget ?? roofDrag.resolve(event)
       if (!target) return
+      committed = true
       const targetSegmentId = target.segment.id as AnyNodeId
       const st = useScene.getState()
 
@@ -176,16 +194,29 @@ export default function MoveBoxVentTool({ node }: { node: BoxVentNode }) {
       exitMoveMode()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      if (!lastTarget) return
+      onRoofClick({
+        nativeEvent: event,
+        stopPropagation: () => event.stopPropagation(),
+      } as unknown as RoofEvent)
+    }
+
     emitter.on('roof:move', updatePreview)
     emitter.on('roof:enter', updatePreview)
     emitter.on('roof:click', onRoofClick)
+    emitter.on('roof:leave', clearTarget)
     emitter.on('tool:cancel', onCancel)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       emitter.off('roof:move', updatePreview)
       emitter.off('roof:enter', updatePreview)
       emitter.off('roof:click', onRoofClick)
+      emitter.off('roof:leave', clearTarget)
       emitter.off('tool:cancel', onCancel)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
 
       // Safety restore — if the tool is unmounted by something other than
       // a commit / cancel path (e.g. tool change, selection wipe), leave

packages/nodes/src/box-vent/tool.tsx

@@ -13,6 +13,7 @@ import { triggerSFX } from '@pascal-app/editor'
 import { useViewer } from '@pascal-app/viewer'
 import { useEffect, useMemo, useRef, useState } from 'react'
 import * as THREE from 'three'
+import { RoofAttachmentFallbackPreview } from '../shared/roof-attachment-fallback-preview'
 import { resolveRoofSegmentHit } from '../shared/roof-segment-hit'
 import { getAnalyticalNormal, getDownSlopeYaw, surfaceQuatFromNormal } from '../shared/roof-surface'
 import { boxVentDefinition } from './definition'
@@ -122,16 +123,26 @@ const BoxVentTool = () => {
     }
   }, [activeBuildingId, setSelection])
 
-  if (!activeBuildingId || !previewPos || !previewSurfaceQuat) return null
-
   return (
-    <group position={previewPos}>
-      <group rotation-y={previewYaw}>
-        <group quaternion={previewSurfaceQuat}>
-          <BoxVentPreview node={previewNode} />
+    <>
+      <RoofAttachmentFallbackPreview
+        activeBuildingId={activeBuildingId}
+        onInvalidTarget={() => {
+          setPreviewPos(null)
+          setPreviewSurfaceQuat(null)
+        }}
+        size={[0.6, 0.4, 0.6]}
+      />
+      {activeBuildingId && previewPos && previewSurfaceQuat && (
+        <group position={previewPos}>
+          <group rotation-y={previewYaw}>
+            <group quaternion={previewSurfaceQuat}>
+              <BoxVentPreview node={previewNode} />
+            </group>
+          </group>
         </group>
-      </group>
-    </group>
+      )}
+    </>
   )
 }
 

packages/nodes/src/building/move-tool.tsx

@@ -8,7 +8,13 @@ import {
   useLiveTransforms,
   useScene,
 } from '@pascal-app/core'
-import { CursorSphere, markToolCancelConsumed, triggerSFX, useEditor } from '@pascal-app/editor'
+import {
+  CursorSphere,
+  consumePlacementDragRelease,
+  markToolCancelConsumed,
+  triggerSFX,
+  useEditor,
+} from '@pascal-app/editor'
 import { useViewer } from '@pascal-app/viewer'
 import { useCallback, useEffect, useRef, useState } from 'react'
 import * as THREE from 'three'
@@ -151,6 +157,7 @@ export function MoveBuildingContent({ node }: { node: BuildingNode }) {
     }
 
     const onGridClick = (event: GridEvent) => {
+      if (wasCommitted) return
       const [gridX, gridZ] = previousGridPosRef.current ?? originalCenter
 
       wasCommitted = true
@@ -169,6 +176,11 @@ export function MoveBuildingContent({ node }: { node: BuildingNode }) {
       event.nativeEvent?.stopPropagation?.()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      onGridClick({ nativeEvent: event } as unknown as GridEvent)
+    }
+
     const onCancel = () => {
       // Revert mesh position and rotation immediately
       const mesh = sceneRegistry.nodes.get(nodeId)
@@ -190,6 +202,7 @@ export function MoveBuildingContent({ node }: { node: BuildingNode }) {
     emitter.on('grid:click', onGridClick)
     emitter.on('tool:cancel', onCancel)
     window.addEventListener('keydown', onKeyDown)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       if (!wasCommitted) {
@@ -207,6 +220,7 @@ export function MoveBuildingContent({ node }: { node: BuildingNode }) {
       emitter.off('grid:click', onGridClick)
       emitter.off('tool:cancel', onCancel)
       window.removeEventListener('keydown', onKeyDown)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
     }
   }, [exitMoveMode]) // stable — node values captured via refs at mount
 

packages/nodes/src/ceiling/definition.ts

@@ -150,6 +150,7 @@ export const ceilingDefinition: NodeDefinition<typeof CeilingNode> = {
   toolHints: [
     { key: 'Left click', label: 'Trace ceiling outline' },
     { key: 'Enter', label: 'Finish ceiling' },
+    { key: 'Shift', label: 'Free outline' },
     { key: 'Esc', label: 'Cancel' },
   ],
 

packages/nodes/src/ceiling/move-tool.tsx

@@ -14,6 +14,7 @@ import {
 } from '@pascal-app/core'
 import {
   CursorSphere,
+  consumePlacementDragRelease,
   markToolCancelConsumed,
   triggerSFX,
   useAlignmentGuides,
@@ -189,6 +190,7 @@ export const MoveCeilingTool: React.FC<{ node: CeilingNode }> = ({ node }) => {
     }
 
     const onGridClick = (event: GridEvent) => {
+      if (wasCommitted) return
       if (isFloorplanSourcedEvent(event)) return
       if (Date.now() - activatedAtRef.current < 150) {
         event.nativeEvent?.stopPropagation?.()
@@ -214,6 +216,12 @@ export const MoveCeilingTool: React.FC<{ node: CeilingNode }> = ({ node }) => {
       event.nativeEvent?.stopPropagation?.()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      activatedAtRef.current = 0
+      onGridClick({ nativeEvent: event } as unknown as GridEvent)
+    }
+
     const onCancel = () => {
       clearPreview()
       useAlignmentGuides.getState().clear()
@@ -225,6 +233,7 @@ export const MoveCeilingTool: React.FC<{ node: CeilingNode }> = ({ node }) => {
     emitter.on('grid:move', onGridMove)
     emitter.on('grid:click', onGridClick)
     emitter.on('tool:cancel', onCancel)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       useAlignmentGuides.getState().clear()
@@ -236,6 +245,7 @@ export const MoveCeilingTool: React.FC<{ node: CeilingNode }> = ({ node }) => {
       emitter.off('grid:move', onGridMove)
       emitter.off('grid:click', onGridClick)
       emitter.off('tool:cancel', onCancel)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
     }
   }, [exitMoveMode, node.id])
 

packages/nodes/src/chimney/move-tool.tsx

@@ -10,7 +10,7 @@ import {
   sceneRegistry,
   useScene,
 } from '@pascal-app/core'
-import { triggerSFX, useEditor } from '@pascal-app/editor'
+import { consumePlacementDragRelease, triggerSFX, useEditor } from '@pascal-app/editor'
 import { useViewer } from '@pascal-app/viewer'
 import { useEffect, useMemo, useRef, useState } from 'react'
 import * as THREE from 'three'
@@ -89,9 +89,19 @@ const MoveChimneyTool = ({ node }: { node: ChimneyNode }) => {
       roofSegmentId: node.roofSegmentId,
     })
 
+    const clearTarget = () => {
+      lastTarget = null
+      setSegmentXform(null)
+      setHitLocal(null)
+      setPreviewSegment(null)
+    }
+
     const updatePreview = (event: RoofEvent) => {
       const target = roofDrag.resolve(event)
-      if (!target) return
+      if (!target) {
+        clearTarget()
+        return
+      }
       lastTarget = target
 
       const sx = Math.round(target.localX * 20) / 20
@@ -156,14 +166,27 @@ const MoveChimneyTool = ({ node }: { node: ChimneyNode }) => {
       event.stopPropagation()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      if (!lastTarget) return
+      onClick({
+        nativeEvent: event,
+        stopPropagation: () => event.stopPropagation(),
+      } as unknown as RoofEvent)
+    }
+
     emitter.on('roof:move', updatePreview)
     emitter.on('roof:enter', updatePreview)
     emitter.on('roof:click', onClick)
+    emitter.on('roof:leave', clearTarget)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       emitter.off('roof:move', updatePreview)
       emitter.off('roof:enter', updatePreview)
       emitter.off('roof:click', onClick)
+      emitter.off('roof:leave', clearTarget)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
     }
   }, [activeBuildingId, node, setMovingNode, setSelection])
 

packages/nodes/src/chimney/tool.tsx

@@ -14,6 +14,7 @@ import { triggerSFX } from '@pascal-app/editor'
 import { useViewer } from '@pascal-app/viewer'
 import { useEffect, useMemo, useRef, useState } from 'react'
 import * as THREE from 'three'
+import { RoofAttachmentFallbackPreview } from '../shared/roof-attachment-fallback-preview'
 import { resolveRoofSegmentHit } from '../shared/roof-segment-hit'
 import { chimneyDefinition } from './definition'
 import ChimneyPreview from './preview'
@@ -139,19 +140,30 @@ const ChimneyTool = () => {
     }
   }, [activeBuildingId, setSelection])
 
-  if (!activeBuildingId || !segmentXform || !hitLocal || !previewSegment) return null
-
-  // Outer group mirrors the real renderer's `position={segment.position}
-  // rotation-y={segment.rotation}` chain by composing the segment's
-  // building-local matrix (which walks roof + level + segment). Inner
-  // group offsets by the cursor's segment-local x/z so the chimney
-  // geometry (built with `position[0,2] = 0`) lands under the cursor.
   return (
-    <group position={segmentXform.position} quaternion={segmentXform.quaternion}>
-      <group position={[hitLocal[0], 0, hitLocal[2]]}>
-        <ChimneyPreview node={previewNode} segment={previewSegment} />
-      </group>
-    </group>
+    <>
+      <RoofAttachmentFallbackPreview
+        activeBuildingId={activeBuildingId}
+        onInvalidTarget={() => {
+          setSegmentXform(null)
+          setHitLocal(null)
+          setPreviewSegment(null)
+        }}
+        size={[1, 2.5, 1]}
+      />
+      {activeBuildingId && segmentXform && hitLocal && previewSegment && (
+        // Outer group mirrors the real renderer's `position={segment.position}
+        // rotation-y={segment.rotation}` chain by composing the segment's
+        // building-local matrix (which walks roof + level + segment). Inner
+        // group offsets by the cursor's segment-local x/z so the chimney
+        // geometry (built with `position[0,2] = 0`) lands under the cursor.
+        <group position={segmentXform.position} quaternion={segmentXform.quaternion}>
+          <group position={[hitLocal[0], 0, hitLocal[2]]}>
+            <ChimneyPreview node={previewNode} segment={previewSegment} />
+          </group>
+        </group>
+      )}
+    </>
   )
 }
 

packages/nodes/src/column/definition.ts

@@ -359,7 +359,7 @@ export const columnDefinition: NodeDefinition<typeof ColumnNode> = {
   tool: () => import('./tool'),
   toolHints: [
     { key: 'Left click', label: 'Place column' },
-    { key: 'Alt', label: 'No snap' },
+    { key: 'Shift', label: 'Free place' },
     { key: 'Esc', label: 'Cancel' },
   ],
   floorplan: buildColumnFloorplan,

packages/nodes/src/column/move-tool.tsx

@@ -16,6 +16,7 @@ import {
 import {
   CursorSphere,
   commitFreshPlacementSubtree,
+  consumePlacementDragRelease,
   DragBoundingBox,
   getFloorStackPreviewPosition,
   markToolCancelConsumed,
@@ -165,6 +166,7 @@ function MoveColumnTool({ node }: { node: ColumnNode }) {
     }
 
     const onGridClick = (event: GridEvent) => {
+      if (committed) return
       if (!hasMoved) return
       useAlignmentGuides.getState().clear()
       // Commit at the last previewed position so the alignment snap (which
@@ -225,6 +227,11 @@ function MoveColumnTool({ node }: { node: ColumnNode }) {
       event.nativeEvent?.stopPropagation?.()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      onGridClick({ nativeEvent: event } as unknown as GridEvent)
+    }
+
     const onCancel = () => {
       useLiveTransforms.getState().clear(node.id)
       useAlignmentGuides.getState().clear()
@@ -244,12 +251,14 @@ function MoveColumnTool({ node }: { node: ColumnNode }) {
     }
 
     window.addEventListener('keydown', onKeyDown)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
     emitter.on('grid:move', onGridMove)
     emitter.on('grid:click', onGridClick)
     emitter.on('tool:cancel', onCancel)
 
     return () => {
       window.removeEventListener('keydown', onKeyDown)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
       emitter.off('grid:move', onGridMove)
       emitter.off('grid:click', onGridClick)
       emitter.off('tool:cancel', onCancel)

packages/nodes/src/cupola/move-tool.tsx

@@ -9,7 +9,12 @@ import {
   sceneRegistry,
   useScene,
 } from '@pascal-app/core'
-import { markToolCancelConsumed, triggerSFX, useEditor } from '@pascal-app/editor'
+import {
+  consumePlacementDragRelease,
+  markToolCancelConsumed,
+  triggerSFX,
+  useEditor,
+} from '@pascal-app/editor'
 import { useCallback, useEffect, useState } from 'react'
 import * as THREE from 'three'
 import {
@@ -57,11 +62,22 @@ export default function MoveCupolaTool({ node }: { node: CupolaNode }) {
 
     let lastSnap: [number, number] | null = null
     let lastTarget: RelativeRoofDragTarget | null = null
+    let committed = false
     const roofDrag = createRelativeRoofDrag(original)
 
+    const clearTarget = () => {
+      lastTarget = null
+      lastSnap = null
+      setPreviewPos(null)
+      setPreviewSurfaceQuat(null)
+    }
+
     const updatePreview = (event: RoofEvent) => {
       const target = roofDrag.resolve(event)
-      if (!target) return
+      if (!target) {
+        clearTarget()
+        return
+      }
       lastTarget = target
 
       const sx = Math.round(target.localX * 20) / 20
@@ -88,8 +104,10 @@ export default function MoveCupolaTool({ node }: { node: CupolaNode }) {
     }
 
     const onRoofClick = (event: RoofEvent) => {
+      if (committed) return
       const target = lastTarget ?? roofDrag.resolve(event)
       if (!target) return
+      committed = true
       const targetSegmentId = target.segment.id as AnyNodeId
       const st = useScene.getState()
 
@@ -168,16 +186,29 @@ export default function MoveCupolaTool({ node }: { node: CupolaNode }) {
       exitMoveMode()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      if (!lastTarget) return
+      onRoofClick({
+        nativeEvent: event,
+        stopPropagation: () => event.stopPropagation(),
+      } as unknown as RoofEvent)
+    }
+
     emitter.on('roof:move', updatePreview)
     emitter.on('roof:enter', updatePreview)
     emitter.on('roof:click', onRoofClick)
+    emitter.on('roof:leave', clearTarget)
     emitter.on('tool:cancel', onCancel)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       emitter.off('roof:move', updatePreview)
       emitter.off('roof:enter', updatePreview)
       emitter.off('roof:click', onRoofClick)
+      emitter.off('roof:leave', clearTarget)
       emitter.off('tool:cancel', onCancel)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
 
       const obj = sceneRegistry.nodes.get(node.id)
       if (obj) obj.visible = true

packages/nodes/src/cupola/tool.tsx

@@ -13,6 +13,7 @@ import { triggerSFX } from '@pascal-app/editor'
 import { useViewer } from '@pascal-app/viewer'
 import { useEffect, useMemo, useRef, useState } from 'react'
 import * as THREE from 'three'
+import { RoofAttachmentFallbackPreview } from '../shared/roof-attachment-fallback-preview'
 import { resolveRoofSegmentHit } from '../shared/roof-segment-hit'
 import { getAnalyticalNormal, surfaceQuatFromNormal } from '../shared/roof-surface'
 import { cupolaDefinition } from './definition'
@@ -114,16 +115,26 @@ const CupolaTool = () => {
     }
   }, [activeBuildingId, setSelection])
 
-  if (!activeBuildingId || !previewPos || !previewSurfaceQuat) return null
-
   return (
-    <group position={previewPos}>
-      <group rotation-y={previewYaw}>
-        <group quaternion={previewSurfaceQuat}>
-          <CupolaPreview node={previewNode} />
+    <>
+      <RoofAttachmentFallbackPreview
+        activeBuildingId={activeBuildingId}
+        onInvalidTarget={() => {
+          setPreviewPos(null)
+          setPreviewSurfaceQuat(null)
+        }}
+        size={[0.8, 1.2, 0.8]}
+      />
+      {activeBuildingId && previewPos && previewSurfaceQuat && (
+        <group position={previewPos}>
+          <group rotation-y={previewYaw}>
+            <group quaternion={previewSurfaceQuat}>
+              <CupolaPreview node={previewNode} />
+            </group>
+          </group>
         </group>
-      </group>
-    </group>
+      )}
+    </>
   )
 }
 

packages/nodes/src/door/definition.ts

@@ -219,6 +219,7 @@ export const doorDefinition: NodeDefinition<typeof DoorNode> = {
 
   toolHints: [
     { key: 'Left click', label: 'Place door on wall' },
+    { key: 'Shift', label: 'Free place' },
     { key: 'Esc', label: 'Cancel' },
   ],
 

packages/nodes/src/door/move-tool.tsx

@@ -15,6 +15,7 @@ import {
 import {
   calculateCursorRotation,
   calculateItemRotation,
+  consumePlacementDragRelease,
   EDITOR_LAYER,
   getSideFromNormal,
   isValidWallSideFace,
@@ -80,6 +81,7 @@ const MoveDoorTool: React.FC<{ node: DoorNode }> = ({ node: movingDoorNode }) =>
 
     let currentHostId: string | null = movingDoorNode.parentId
     let dragAnchor: { wallId: string; rawX: number; startX: number } | null = null
+    let committed = false
     let lastTarget: {
       wallNode: WallEvent['node']
       wallId: string
@@ -91,6 +93,7 @@ const MoveDoorTool: React.FC<{ node: DoorNode }> = ({ node: movingDoorNode }) =>
       valid: boolean
       event: WallEvent
     } | null = null
+    let lastRoofEvent: RoofEvent | null = null
 
     const markHostDirty = (hostId: string | null) => {
       if (hostId) useScene.getState().dirtyNodes.add(hostId as AnyNodeId)
@@ -254,34 +257,50 @@ const MoveDoorTool: React.FC<{ node: DoorNode }> = ({ node: movingDoorNode }) =>
 
     const onWallEnter = (event: WallEvent) => {
       const target = resolveMoveTarget(event)
-      if (!target) return
+      if (!target) {
+        onWallLeave()
+        return
+      }
       lastTarget = target
+      lastRoofEvent = null
       applyPreview(target)
       event.stopPropagation()
     }
 
     const onWallMove = (event: WallEvent) => {
-      if (!isValidWallSideFace(event.normal)) return
+      if (!isValidWallSideFace(event.normal)) {
+        onWallLeave()
+        return
+      }
       if (isCurvedWall(event.node)) {
-        hideCursor()
+        onWallLeave()
+        return
+      }
+      if (event.node.parentId !== getLevelId()) {
+        onWallLeave()
         return
       }
-      if (event.node.parentId !== getLevelId()) return
 
       const target = resolveMoveTarget(event)
-      if (!target) return
+      if (!target) {
+        onWallLeave()
+        return
+      }
       lastTarget = target
+      lastRoofEvent = null
       applyPreview(target)
       event.stopPropagation()
     }
 
     const onWallClick = (event: WallEvent) => {
+      if (committed) return
       if (!isValidWallSideFace(event.normal)) return
       if (isCurvedWall(event.node)) return
       if (event.node.parentId !== getLevelId()) return
 
       const target = lastTarget?.wallId === event.node.id ? lastTarget : resolveMoveTarget(event)
       if (!target?.valid) return
+      committed = true
 
       let placedId: string
 
@@ -349,6 +368,7 @@ const MoveDoorTool: React.FC<{ node: DoorNode }> = ({ node: movingDoorNode }) =>
       useLiveTransforms.getState().clear(movingDoorNode.id)
       dragAnchor = null
       lastTarget = null
+      lastRoofEvent = null
       if (isNew) return
       if (currentHostId && currentHostId !== original.parentId) {
         markHostDirty(currentHostId)
@@ -387,10 +407,14 @@ const MoveDoorTool: React.FC<{ node: DoorNode }> = ({ node: movingDoorNode }) =>
 
     const onRoofHover = (event: RoofEvent) => {
       const target = resolveRoofMoveTarget(event)
-      if (!target) return
+      if (!target) {
+        onRoofLeave()
+        return
+      }
       // Wall-frame drag anchor / live transform don't apply on a roof face.
       dragAnchor = null
       lastTarget = null
+      lastRoofEvent = event
       useLiveTransforms.getState().clear(movingDoorNode.id)
       if (currentHostId !== target.segment.id) {
         useScene.getState().updateNode(movingDoorNode.id, {
@@ -416,8 +440,10 @@ const MoveDoorTool: React.FC<{ node: DoorNode }> = ({ node: movingDoorNode }) =>
     }
 
     const onRoofClick = (event: RoofEvent) => {
+      if (committed) return
       const target = resolveRoofMoveTarget(event)
       if (!target?.valid) return
+      committed = true
       const segmentId = target.segment.id
 
       let placedId: string
@@ -487,6 +513,7 @@ const MoveDoorTool: React.FC<{ node: DoorNode }> = ({ node: movingDoorNode }) =>
       useLiveTransforms.getState().clear(movingDoorNode.id)
       dragAnchor = null
       lastTarget = null
+      lastRoofEvent = null
       if (isNew) return
       if (currentHostId && currentHostId !== original.parentId) {
         markHostDirty(currentHostId)
@@ -527,6 +554,15 @@ const MoveDoorTool: React.FC<{ node: DoorNode }> = ({ node: movingDoorNode }) =>
       exitMoveMode()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      if (lastTarget) {
+        onWallClick(lastTarget.event)
+        return
+      }
+      if (lastRoofEvent) onRoofClick(lastRoofEvent)
+    }
+
     emitter.on('wall:enter', onWallEnter)
     emitter.on('wall:move', onWallMove)
     emitter.on('wall:click', onWallClick)
@@ -536,6 +572,7 @@ const MoveDoorTool: React.FC<{ node: DoorNode }> = ({ node: movingDoorNode }) =>
     emitter.on('roof:click', onRoofClick)
     emitter.on('roof:leave', onRoofLeave)
     emitter.on('tool:cancel', onCancel)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       const current = useScene.getState().nodes[movingDoorNode.id as AnyNodeId] as
@@ -572,6 +609,7 @@ const MoveDoorTool: React.FC<{ node: DoorNode }> = ({ node: movingDoorNode }) =>
       emitter.off('roof:click', onRoofClick)
       emitter.off('roof:leave', onRoofLeave)
       emitter.off('tool:cancel', onCancel)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
     }
   }, [movingDoorNode, exitMoveMode])
 

packages/nodes/src/door/tool.tsx

@@ -3,6 +3,7 @@ import {
   collectAlignmentAnchors,
   DoorNode,
   emitter,
+  type GridEvent,
   isCurvedWall,
   type RoofEvent,
   type RoofNode,
@@ -22,12 +23,13 @@ import {
 } from '@pascal-app/editor'
 import { useViewer } from '@pascal-app/viewer'
 import { useEffect, useRef } from 'react'
-import { BoxGeometry, EdgesGeometry, type Group, type LineSegments } from 'three'
+import { BoxGeometry, EdgesGeometry, type Group, type LineSegments, Vector3 } from 'three'
 import { LineBasicNodeMaterial } from 'three/webgpu'
 import {
   getRoofWallOpeningCursorPose,
   type RoofWallOpeningTarget,
   resolveRoofWallOpeningTarget,
+  worldToSelectedBuildingLocal,
 } from '../shared/roof-wall-opening-placement'
 import { resolveWallSlideAlignment } from '../shared/wall-opening-alignment'
 import { clampToWall, hasWallChildOverlap, wallLocalToWorld } from './door-math'
@@ -39,6 +41,10 @@ const edgeMaterial = new LineBasicNodeMaterial({
   depthWrite: false,
 })
 
+const FALLBACK_WIDTH = 0.9
+const FALLBACK_HEIGHT = 2.1
+const roofFallbackPoint = new Vector3()
+
 /**
  * Door tool — places DoorNodes on walls and on roof-segment wall faces
  * (the generated base walls under a roof, including coplanar gable ends).
@@ -99,16 +105,47 @@ const DoorTool: React.FC = () => {
       edgeMaterial.color.setHex(valid ? 0x22_c5_5e : 0xef_44_44)
     }
 
+    const showFallbackCursor = (event: GridEvent) => {
+      if (draftRef.current) return
+      const [x, y, z] = event.localPosition
+      updateCursor([x, y + FALLBACK_HEIGHT / 2, z], 0, false)
+      useAlignmentGuides.getState().clear()
+    }
+
+    const showRoofFallbackCursor = (event: RoofEvent) => {
+      const [x, , z] = worldToSelectedBuildingLocal(roofFallbackPoint.set(...event.position))
+      updateCursor([x, getLevelYOffset() + FALLBACK_HEIGHT / 2, z], 0, false)
+      useAlignmentGuides.getState().clear()
+    }
+
+    const showWallFallbackCursor = (event: WallEvent) => {
+      const [x, , z] = worldToSelectedBuildingLocal(roofFallbackPoint.set(...event.position))
+      updateCursor([x, getLevelYOffset() + FALLBACK_HEIGHT / 2, z], 0, false)
+      useAlignmentGuides.getState().clear()
+    }
+
     const onWallEnter = (event: WallEvent) => {
-      if (!isValidWallSideFace(event.normal)) return
+      if (!isValidWallSideFace(event.normal)) {
+        destroyDraft()
+        showWallFallbackCursor(event)
+        return
+      }
       if (isCurvedWall(event.node)) {
         destroyDraft()
-        hideCursor()
+        showWallFallbackCursor(event)
         return
       }
       const levelId = getLevelId()
-      if (!levelId) return
-      if (event.node.parentId !== levelId) return
+      if (!levelId) {
+        destroyDraft()
+        showWallFallbackCursor(event)
+        return
+      }
+      if (event.node.parentId !== levelId) {
+        destroyDraft()
+        showWallFallbackCursor(event)
+        return
+      }
 
       destroyDraft()
 
@@ -158,13 +195,21 @@ const DoorTool: React.FC = () => {
     }
 
     const onWallMove = (event: WallEvent) => {
-      if (!isValidWallSideFace(event.normal)) return
-      if (isCurvedWall(event.node)) {
+      if (!isValidWallSideFace(event.normal)) {
         destroyDraft()
-        hideCursor()
+        showWallFallbackCursor(event)
+        return
+      }
+      if (isCurvedWall(event.node)) {
+        destroyDraft()
+        showWallFallbackCursor(event)
+        return
+      }
+      if (event.node.parentId !== getLevelId()) {
+        destroyDraft()
+        showWallFallbackCursor(event)
         return
       }
-      if (event.node.parentId !== getLevelId()) return
 
       const side = getSideFromNormal(event.normal)
       const itemRotation = calculateItemRotation(event.normal)
@@ -373,10 +418,8 @@ const DoorTool: React.FC = () => {
       if (!target) {
         // On the roof but not over a placeable wall face (slope, soffit,
         // or a face the door cannot fit on).
-        if (draftRef.current?.roofSegmentId) {
-          destroyDraft()
-          hideCursor()
-        }
+        destroyDraft()
+        showRoofFallbackCursor(event)
         return
       }
       const { segment, face, position } = target
@@ -483,6 +526,7 @@ const DoorTool: React.FC = () => {
     emitter.on('roof:move', onRoofHover)
     emitter.on('roof:click', onRoofClick)
     emitter.on('roof:leave', onRoofLeave)
+    emitter.on('grid:move', showFallbackCursor)
     emitter.on('tool:cancel', onCancel)
 
     return () => {
@@ -498,12 +542,13 @@ const DoorTool: React.FC = () => {
       emitter.off('roof:move', onRoofHover)
       emitter.off('roof:click', onRoofClick)
       emitter.off('roof:leave', onRoofLeave)
+      emitter.off('grid:move', showFallbackCursor)
       emitter.off('tool:cancel', onCancel)
     }
   }, [])
 
-  // Cursor geometry: door outline (default 0.9 × 2.1 × 0.07)
-  const boxGeo = new BoxGeometry(0.9, 2.1, 0.07)
+  // Cursor geometry: door outline.
+  const boxGeo = new BoxGeometry(FALLBACK_WIDTH, FALLBACK_HEIGHT, 0.07)
   const edgesGeo = new EdgesGeometry(boxGeo)
   boxGeo.dispose()
 

packages/nodes/src/dormer/tool.tsx

@@ -3,6 +3,7 @@
 import { type AnyNodeId, DormerNode, useScene } from '@pascal-app/core'
 import { useViewer } from '@pascal-app/viewer'
 import { useMemo } from 'react'
+import { RoofAttachmentFallbackPreview } from '../shared/roof-attachment-fallback-preview'
 import { dormerDefinition } from './definition'
 import DormerPreview from './preview'
 import { useDormerPlacement } from './use-dormer-placement'
@@ -47,36 +48,44 @@ const DormerTool = () => {
     [],
   )
 
-  const { activeBuildingId, segmentXform, hitLocal, ghostRotation } = useDormerPlacement({
-    onCommit: (hit, rotation) => {
-      const state = useScene.getState()
-      const dormer = DormerNode.parse({
-        ...dormerDefinition.defaults(),
-        name: `Dormer ${nextDormerNumber(state.nodes)}`,
-        roofSegmentId: hit.segment.id,
-        parentId: hit.segment.id,
-        // Anchor at the slope height so the renderer matches the ghost.
-        // The CSG still carves cleanly because it inverts T(position)
-        // when bringing the host into dormer-local.
-        position: [hit.localX, hit.localY, hit.localZ],
-        rotation,
-      })
-      state.createNode(dormer, hit.segment.id as AnyNodeId)
-      state.dirtyNodes.add(hit.segment.id as AnyNodeId)
-      setSelection({ selectedIds: [dormer.id] })
-    },
-  })
-
-  if (!activeBuildingId || !segmentXform || !hitLocal) return null
+  const { activeBuildingId, clearPreview, segmentXform, hitLocal, ghostRotation } =
+    useDormerPlacement({
+      onCommit: (hit, rotation) => {
+        const state = useScene.getState()
+        const dormer = DormerNode.parse({
+          ...dormerDefinition.defaults(),
+          name: `Dormer ${nextDormerNumber(state.nodes)}`,
+          roofSegmentId: hit.segment.id,
+          parentId: hit.segment.id,
+          // Anchor at the slope height so the renderer matches the ghost.
+          // The CSG still carves cleanly because it inverts T(position)
+          // when bringing the host into dormer-local.
+          position: [hit.localX, hit.localY, hit.localZ],
+          rotation,
+        })
+        state.createNode(dormer, hit.segment.id as AnyNodeId)
+        state.dirtyNodes.add(hit.segment.id as AnyNodeId)
+        setSelection({ selectedIds: [dormer.id] })
+      },
+    })
 
   return (
-    <group position={segmentXform.position} quaternion={segmentXform.quaternion}>
-      <group position={hitLocal}>
-        <group rotation-y={ghostRotation}>
-          <DormerPreview node={previewNode} />
+    <>
+      <RoofAttachmentFallbackPreview
+        activeBuildingId={activeBuildingId}
+        onInvalidTarget={clearPreview}
+        size={[1.8, 1.8, 1.4]}
+      />
+      {activeBuildingId && segmentXform && hitLocal && (
+        <group position={segmentXform.position} quaternion={segmentXform.quaternion}>
+          <group position={hitLocal}>
+            <group rotation-y={ghostRotation}>
+              <DormerPreview node={previewNode} />
+            </group>
+          </group>
         </group>
-      </group>
-    </group>
+      )}
+    </>
   )
 }
 

packages/nodes/src/dormer/use-dormer-placement.ts

@@ -6,7 +6,7 @@ import {
   type RoofSegmentNode,
   sceneRegistry,
 } from '@pascal-app/core'
-import { triggerSFX } from '@pascal-app/editor'
+import { consumePlacementDragRelease, triggerSFX } from '@pascal-app/editor'
 import { useViewer } from '@pascal-app/viewer'
 import { useEffect, useRef, useState } from 'react'
 import * as THREE from 'three'
@@ -58,6 +58,7 @@ export function useDormerPlacement(opts: {
   onCommit: (hit: DormerPlacementHit, rotation: number) => void
 }): {
   activeBuildingId: string | undefined
+  clearPreview: () => void
   segmentXform: DormerSegmentTransform | null
   hitLocal: [number, number, number] | null
   ghostRotation: number
@@ -78,6 +79,11 @@ export function useDormerPlacement(opts: {
   const onCommitRef = useRef(opts.onCommit)
   onCommitRef.current = opts.onCommit
 
+  const clearPreview = () => {
+    setSegmentXform(null)
+    setHitLocal(null)
+  }
+
   useEffect(() => {
     if (!activeBuildingId) return
 
@@ -99,6 +105,7 @@ export function useDormerPlacement(opts: {
     const roofDrag = relativeStartRef.current
       ? createRelativeRoofDrag(relativeStartRef.current)
       : null
+    let committed = false
     let lastRelativeHit: DormerPlacementHit | null = null
 
     const resolvePlacementHit = (event: RoofEvent): DormerPlacementHit | null => {
@@ -139,15 +146,27 @@ export function useDormerPlacement(opts: {
     }
 
     const onClick = (event: RoofEvent) => {
+      if (committed) return
       const hit = roofDrag
         ? (lastRelativeHit ?? resolvePlacementHit(event))
         : resolvePlacementHit(event)
       if (!hit) return
+      committed = true
       onCommitRef.current(hit, ghostRotationRef.current)
       triggerSFX('sfx:item-place')
       event.stopPropagation()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (committed) return
+      if (!consumePlacementDragRelease(event)) return
+      const hit = roofDrag ? lastRelativeHit : null
+      if (!hit) return
+      committed = true
+      onCommitRef.current(hit, ghostRotationRef.current)
+      triggerSFX('sfx:item-place')
+    }
+
     const onKeyDown = (e: KeyboardEvent) => {
       if (e.key !== 'r' && e.key !== 'R') return
       const target = e.target as HTMLElement | null
@@ -166,17 +185,20 @@ export function useDormerPlacement(opts: {
     emitter.on('roof:enter', updatePreview)
     emitter.on('roof:click', onClick)
     window.addEventListener('keydown', onKeyDown)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       emitter.off('roof:move', updatePreview)
       emitter.off('roof:enter', updatePreview)
       emitter.off('roof:click', onClick)
       window.removeEventListener('keydown', onKeyDown)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
     }
   }, [activeBuildingId])
 
   return {
     activeBuildingId: activeBuildingId ?? undefined,
+    clearPreview,
     segmentXform,
     hitLocal,
     ghostRotation,

packages/nodes/src/downspout/tool.tsx

@@ -17,6 +17,7 @@ import { useEffect, useMemo, useState } from 'react'
 import { Vector3 } from 'three'
 import { computeEaveY } from '../gutter/eave-snap'
 import { resolveGutterOutletById } from '../gutter/outlet-lookup'
+import { RoofAttachmentFallbackPreview } from '../shared/roof-attachment-fallback-preview'
 import { downspoutDefinition } from './definition'
 import DownspoutPreview from './preview'
 import { computeDownspoutRouting, type DownspoutRouting } from './routing'
@@ -162,22 +163,30 @@ const DownspoutTool = () => {
     }
   }, [activeBuildingId, setSelection])
 
-  if (!activeBuildingId || !target) return null
-
   return (
-    <group position={target.segment.position} rotation-y={target.segment.rotation}>
-      <group
-        position={[target.gutter.position[0], target.segment.eaveY, target.gutter.position[2]]}
-        rotation-y={target.gutter.rotation}
-      >
-        <group position={[target.outlet.x, target.outlet.y, target.outlet.z]}>
-          <DownspoutPreview
-            node={previewNodeWithDefaults(previewNode, target)}
-            routing={target.routing}
-          />
+    <>
+      <RoofAttachmentFallbackPreview
+        activeBuildingId={activeBuildingId}
+        onInvalidTarget={() => setTarget(null)}
+        size={[0.2, 2.5, 0.2]}
+        validTarget="gutter"
+      />
+      {activeBuildingId && target && (
+        <group position={target.segment.position} rotation-y={target.segment.rotation}>
+          <group
+            position={[target.gutter.position[0], target.segment.eaveY, target.gutter.position[2]]}
+            rotation-y={target.gutter.rotation}
+          >
+            <group position={[target.outlet.x, target.outlet.y, target.outlet.z]}>
+              <DownspoutPreview
+                node={previewNodeWithDefaults(previewNode, target)}
+                routing={target.routing}
+              />
+            </group>
+          </group>
         </group>
-      </group>
-    </group>
+      )}
+    </>
   )
 }
 

packages/nodes/src/eyebrow-vent/move-tool.tsx

@@ -9,7 +9,12 @@ import {
   sceneRegistry,
   useScene,
 } from '@pascal-app/core'
-import { markToolCancelConsumed, triggerSFX, useEditor } from '@pascal-app/editor'
+import {
+  consumePlacementDragRelease,
+  markToolCancelConsumed,
+  triggerSFX,
+  useEditor,
+} from '@pascal-app/editor'
 import { useCallback, useEffect, useState } from 'react'
 import * as THREE from 'three'
 import {
@@ -58,11 +63,22 @@ export default function MoveEyebrowVentTool({ node }: { node: EyebrowVentNode })
 
     let lastSnap: [number, number] | null = null
     let lastTarget: RelativeRoofDragTarget | null = null
+    let committed = false
     const roofDrag = createRelativeRoofDrag(original)
 
+    const clearTarget = () => {
+      lastTarget = null
+      lastSnap = null
+      setPreviewPos(null)
+      setPreviewSurfaceQuat(null)
+    }
+
     const updatePreview = (event: RoofEvent) => {
       const target = roofDrag.resolve(event)
-      if (!target) return
+      if (!target) {
+        clearTarget()
+        return
+      }
       lastTarget = target
 
       const sx = Math.round(target.localX * 20) / 20
@@ -89,8 +105,10 @@ export default function MoveEyebrowVentTool({ node }: { node: EyebrowVentNode })
     }
 
     const onRoofClick = (event: RoofEvent) => {
+      if (committed) return
       const target = lastTarget ?? roofDrag.resolve(event)
       if (!target) return
+      committed = true
       const targetSegmentId = target.segment.id as AnyNodeId
       const st = useScene.getState()
 
@@ -169,16 +187,29 @@ export default function MoveEyebrowVentTool({ node }: { node: EyebrowVentNode })
       exitMoveMode()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      if (!lastTarget) return
+      onRoofClick({
+        nativeEvent: event,
+        stopPropagation: () => event.stopPropagation(),
+      } as unknown as RoofEvent)
+    }
+
     emitter.on('roof:move', updatePreview)
     emitter.on('roof:enter', updatePreview)
     emitter.on('roof:click', onRoofClick)
+    emitter.on('roof:leave', clearTarget)
     emitter.on('tool:cancel', onCancel)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       emitter.off('roof:move', updatePreview)
       emitter.off('roof:enter', updatePreview)
       emitter.off('roof:click', onRoofClick)
+      emitter.off('roof:leave', clearTarget)
       emitter.off('tool:cancel', onCancel)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
 
       const obj = sceneRegistry.nodes.get(node.id)
       if (obj) obj.visible = true

packages/nodes/src/eyebrow-vent/tool.tsx

@@ -13,6 +13,7 @@ import { triggerSFX } from '@pascal-app/editor'
 import { useViewer } from '@pascal-app/viewer'
 import { useEffect, useMemo, useRef, useState } from 'react'
 import * as THREE from 'three'
+import { RoofAttachmentFallbackPreview } from '../shared/roof-attachment-fallback-preview'
 import { resolveRoofSegmentHit } from '../shared/roof-segment-hit'
 import { getAnalyticalNormal, getDownSlopeYaw, surfaceQuatFromNormal } from '../shared/roof-surface'
 import { eyebrowVentDefinition } from './definition'
@@ -117,16 +118,26 @@ const EyebrowVentTool = () => {
     }
   }, [activeBuildingId, setSelection])
 
-  if (!activeBuildingId || !previewPos || !previewSurfaceQuat) return null
-
   return (
-    <group position={previewPos}>
-      <group rotation-y={previewYaw}>
-        <group quaternion={previewSurfaceQuat}>
-          <EyebrowVentPreview node={previewNode} />
+    <>
+      <RoofAttachmentFallbackPreview
+        activeBuildingId={activeBuildingId}
+        onInvalidTarget={() => {
+          setPreviewPos(null)
+          setPreviewSurfaceQuat(null)
+        }}
+        size={[1.2, 0.4, 0.5]}
+      />
+      {activeBuildingId && previewPos && previewSurfaceQuat && (
+        <group position={previewPos}>
+          <group rotation-y={previewYaw}>
+            <group quaternion={previewSurfaceQuat}>
+              <EyebrowVentPreview node={previewNode} />
+            </group>
+          </group>
         </group>
-      </group>
-    </group>
+      )}
+    </>
   )
 }
 

packages/nodes/src/fence/move-tool.tsx

@@ -14,6 +14,7 @@ import {
 } from '@pascal-app/core'
 import {
   CursorSphere,
+  consumePlacementDragRelease,
   markToolCancelConsumed,
   snapFenceDraftPoint,
   triggerSFX,
@@ -227,6 +228,7 @@ export const MoveFenceTool: React.FC<{ node: FenceNode }> = ({ node }) => {
     }
 
     const onGridClick = (event: GridEvent) => {
+      if (wasCommitted) return
       if (Date.now() - activatedAtRef.current < 150) {
         event.nativeEvent?.stopPropagation?.()
         return
@@ -264,6 +266,12 @@ export const MoveFenceTool: React.FC<{ node: FenceNode }> = ({ node }) => {
       event.nativeEvent?.stopPropagation?.()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      activatedAtRef.current = 0
+      onGridClick({ nativeEvent: event } as unknown as GridEvent)
+    }
+
     const onCancel = () => {
       restoreOriginal()
       useViewer.getState().setSelection({ selectedIds: [fenceId] })
@@ -279,6 +287,7 @@ export const MoveFenceTool: React.FC<{ node: FenceNode }> = ({ node }) => {
     emitter.on('grid:move', onGridMove)
     emitter.on('grid:click', onGridClick)
     emitter.on('tool:cancel', onCancel)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       if (!wasCommitted) {
@@ -303,6 +312,7 @@ export const MoveFenceTool: React.FC<{ node: FenceNode }> = ({ node }) => {
       emitter.off('grid:move', onGridMove)
       emitter.off('grid:click', onGridClick)
       emitter.off('tool:cancel', onCancel)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
     }
   }, [exitMoveMode, node])
 

packages/nodes/src/fence/tool.tsx

@@ -466,7 +466,8 @@ export const FenceTool: React.FC = () => {
     }
 
     // Align the drafted point onto another object's nearest real anchor and
-    // publish the guide. Alt bypasses. Returns the (possibly snapped) point.
+    // publish the guide. Alt bypasses alignment; Shift bypasses all guided
+    // snapping. Returns the possibly snapped point.
     const alignPoint = (point: FencePlanPoint, bypass: boolean): FencePlanPoint => {
       if (bypass || alignmentCandidates.length === 0) {
         useAlignmentGuides.getState().clear()

packages/nodes/src/gutter/move-tool.tsx

@@ -10,7 +10,12 @@ import {
   sceneRegistry,
   useScene,
 } from '@pascal-app/core'
-import { markToolCancelConsumed, triggerSFX, useEditor } from '@pascal-app/editor'
+import {
+  consumePlacementDragRelease,
+  markToolCancelConsumed,
+  triggerSFX,
+  useEditor,
+} from '@pascal-app/editor'
 import { useCallback, useEffect, useState } from 'react'
 import { createRelativeRoofDrag } from '../shared/relative-roof-drag'
 import { type EaveSnap, resolveEaveSnap } from './eave-snap'
@@ -71,8 +76,15 @@ export default function MoveGutterTool({ node }: { node: GutterNode }) {
 
     let lastSnap: [number, number] | null = null
     let lastTarget: GutterDragTarget | null = null
+    let committed = false
     const roofDrag = createRelativeRoofDrag(original)
 
+    const clearTarget = () => {
+      lastTarget = null
+      lastSnap = null
+      setTarget(null)
+    }
+
     const resolveTarget = (event: RoofEvent): GutterDragTarget | null => {
       const target = roofDrag.resolve(event)
       if (!target) return null
@@ -85,7 +97,10 @@ export default function MoveGutterTool({ node }: { node: GutterNode }) {
     const updatePreview = (event: RoofEvent) => {
       const roof = event.node as RoofNode
       const target = resolveTarget(event)
-      if (!target) return
+      if (!target) {
+        clearTarget()
+        return
+      }
       lastTarget = target
 
       // Same snap math as the placement tool — picking-up and putting-
@@ -120,8 +135,10 @@ export default function MoveGutterTool({ node }: { node: GutterNode }) {
     }
 
     const onRoofClick = (event: RoofEvent) => {
+      if (committed) return
       const target = lastTarget ?? resolveTarget(event)
       if (!target) return
+      committed = true
       const targetSegmentId = target.segment.id as AnyNodeId
       const { snap } = target
       const st = useScene.getState()
@@ -201,16 +218,29 @@ export default function MoveGutterTool({ node }: { node: GutterNode }) {
       exitMoveMode()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      if (!lastTarget) return
+      onRoofClick({
+        nativeEvent: event,
+        stopPropagation: () => event.stopPropagation(),
+      } as unknown as RoofEvent)
+    }
+
     emitter.on('roof:move', updatePreview)
     emitter.on('roof:enter', updatePreview)
     emitter.on('roof:click', onRoofClick)
+    emitter.on('roof:leave', clearTarget)
     emitter.on('tool:cancel', onCancel)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       emitter.off('roof:move', updatePreview)
       emitter.off('roof:enter', updatePreview)
       emitter.off('roof:click', onRoofClick)
+      emitter.off('roof:leave', clearTarget)
       emitter.off('tool:cancel', onCancel)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
 
       const obj = sceneRegistry.nodes.get(node.id)
       if (obj) obj.visible = true

packages/nodes/src/gutter/tool.tsx

@@ -11,6 +11,7 @@ import {
 import { triggerSFX } from '@pascal-app/editor'
 import { useViewer } from '@pascal-app/viewer'
 import { useEffect, useMemo, useRef, useState } from 'react'
+import { RoofAttachmentFallbackPreview } from '../shared/roof-attachment-fallback-preview'
 import { resolveRoofSegmentHit } from '../shared/roof-segment-hit'
 import { gutterDefinition } from './definition'
 import { type EaveSnap, resolveEaveSnap } from './eave-snap'
@@ -142,19 +143,26 @@ const GutterTool = () => {
     }
   }, [activeBuildingId, setSelection])
 
-  if (!activeBuildingId || !target) return null
-
   return (
-    <group position={target.roof.position} rotation-y={target.roof.rotation}>
-      <group position={target.segment.position} rotation-y={target.segment.rotation}>
-        <group
-          position={[target.snap.eaveX, target.snap.eaveY, target.snap.eaveZ]}
-          rotation-y={target.snap.rotation}
-        >
-          <GutterPreview node={previewNode} />
+    <>
+      <RoofAttachmentFallbackPreview
+        activeBuildingId={activeBuildingId}
+        onInvalidTarget={() => setTarget(null)}
+        size={[2, 0.2, 0.25]}
+      />
+      {activeBuildingId && target && (
+        <group position={target.roof.position} rotation-y={target.roof.rotation}>
+          <group position={target.segment.position} rotation-y={target.segment.rotation}>
+            <group
+              position={[target.snap.eaveX, target.snap.eaveY, target.snap.eaveZ]}
+              rotation-y={target.snap.rotation}
+            >
+              <GutterPreview node={previewNode} />
+            </group>
+          </group>
         </group>
-      </group>
-    </group>
+      )}
+    </>
   )
 }
 

packages/nodes/src/ridge-vent/move-tool.tsx

@@ -9,7 +9,12 @@ import {
   sceneRegistry,
   useScene,
 } from '@pascal-app/core'
-import { markToolCancelConsumed, triggerSFX, useEditor } from '@pascal-app/editor'
+import {
+  consumePlacementDragRelease,
+  markToolCancelConsumed,
+  triggerSFX,
+  useEditor,
+} from '@pascal-app/editor'
 import { useCallback, useEffect, useState } from 'react'
 import {
   createRelativeRoofDrag,
@@ -60,8 +65,15 @@ export default function MoveRidgeVentTool({ node }: { node: RidgeVentNode }) {
 
     let lastSnap: [number, number] | null = null
     let lastTarget: RidgeVentDragTarget | null = null
+    let committed = false
     const roofDrag = createRelativeRoofDrag(original)
 
+    const clearTarget = () => {
+      lastTarget = null
+      lastSnap = null
+      setPreviewPos(null)
+    }
+
     const resolveTarget = (event: RoofEvent): RidgeVentDragTarget | null => {
       const target = roofDrag.resolve(event)
       if (!target) return null
@@ -75,7 +87,10 @@ export default function MoveRidgeVentTool({ node }: { node: RidgeVentNode }) {
 
     const updatePreview = (event: RoofEvent) => {
       const target = resolveTarget(event)
-      if (!target) return
+      if (!target) {
+        clearTarget()
+        return
+      }
       lastTarget = target
 
       const sx = Math.round(target.localX * 20) / 20
@@ -100,8 +115,10 @@ export default function MoveRidgeVentTool({ node }: { node: RidgeVentNode }) {
     }
 
     const onRoofClick = (event: RoofEvent) => {
+      if (committed) return
       const target = lastTarget ?? resolveTarget(event)
       if (!target) return
+      committed = true
       const targetSegmentId = target.segment.id as AnyNodeId
       const st = useScene.getState()
 
@@ -180,16 +197,29 @@ export default function MoveRidgeVentTool({ node }: { node: RidgeVentNode }) {
       exitMoveMode()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      if (!lastTarget) return
+      onRoofClick({
+        nativeEvent: event,
+        stopPropagation: () => event.stopPropagation(),
+      } as unknown as RoofEvent)
+    }
+
     emitter.on('roof:move', updatePreview)
     emitter.on('roof:enter', updatePreview)
     emitter.on('roof:click', onRoofClick)
+    emitter.on('roof:leave', clearTarget)
     emitter.on('tool:cancel', onCancel)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       emitter.off('roof:move', updatePreview)
       emitter.off('roof:enter', updatePreview)
       emitter.off('roof:click', onRoofClick)
+      emitter.off('roof:leave', clearTarget)
       emitter.off('tool:cancel', onCancel)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
 
       const obj = sceneRegistry.nodes.get(node.id)
       if (obj) obj.visible = true

packages/nodes/src/ridge-vent/tool.tsx

@@ -14,6 +14,7 @@ import { useViewer } from '@pascal-app/viewer'
 import { useEffect, useMemo, useRef, useState } from 'react'
 import * as THREE from 'three'
 import { resolveRidgeSnap } from '../shared/ridge-snap'
+import { RoofAttachmentFallbackPreview } from '../shared/roof-attachment-fallback-preview'
 import { resolveRoofSegmentHit } from '../shared/roof-segment-hit'
 import { ridgeVentDefinition } from './definition'
 import RidgeVentPreview from './preview'
@@ -135,14 +136,30 @@ const RidgeVentTool = () => {
     }
   }, [activeBuildingId, setSelection])
 
-  if (!activeBuildingId || !previewPos) return null
-
   return (
-    <group position={previewPos}>
-      <group rotation-y={previewYaw}>
-        <RidgeVentPreview node={previewNode} />
-      </group>
-    </group>
+    <>
+      <RoofAttachmentFallbackPreview
+        activeBuildingId={activeBuildingId}
+        isValidRoofTarget={(event) => {
+          const hit = resolveRoofSegmentHit(
+            event.node as RoofNode,
+            event.position[0],
+            event.position[1],
+            event.position[2],
+          )
+          return !!hit && !!resolveRidgeSnap(hit.segment, hit.localX, hit.localZ)
+        }}
+        onInvalidTarget={() => setPreviewPos(null)}
+        size={[2, 0.15, 0.35]}
+      />
+      {activeBuildingId && previewPos && (
+        <group position={previewPos}>
+          <group rotation-y={previewYaw}>
+            <RidgeVentPreview node={previewNode} />
+          </group>
+        </group>
+      )}
+    </>
   )
 }
 

packages/nodes/src/shared/move-roof-tool.tsx

@@ -20,6 +20,7 @@ import {
 import {
   CursorSphere,
   commitFreshPlacementSubtree,
+  consumePlacementDragRelease,
   DragBoundingBox,
   getFloorStackPreviewPosition,
   resolvePlanarCursorPosition,
@@ -359,6 +360,7 @@ export const MoveRoofTool: React.FC<{
     }
 
     const onGridClick = (event: GridEvent) => {
+      if (wasCommitted) return
       if (!hasMoved) return
       const [localX, , localZ] = lastLocalPosition
 
@@ -394,6 +396,11 @@ export const MoveRoofTool: React.FC<{
       event.nativeEvent?.stopPropagation?.()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      onGridClick({ nativeEvent: event } as unknown as GridEvent)
+    }
+
     const onCancel = () => {
       wasCancelled = true
       useLiveTransforms.getState().clear(movingNode.id)
@@ -454,6 +461,7 @@ export const MoveRoofTool: React.FC<{
     emitter.on('grid:click', onGridClick)
     emitter.on('tool:cancel', onCancel)
     window.addEventListener('keydown', onKeyDown)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       // Restore segment wrapper visibility (React will re-sync on next render)
@@ -485,6 +493,7 @@ export const MoveRoofTool: React.FC<{
       emitter.off('grid:click', onGridClick)
       emitter.off('tool:cancel', onCancel)
       window.removeEventListener('keydown', onKeyDown)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
     }
   }, [movingNode, exitMoveMode, isFreshPlacement, revealFreshPlacement, useAbsoluteCursorPlacement])
 

packages/nodes/src/shared/roof-attachment-fallback-preview.tsx

@@ -0,0 +1,111 @@
+'use client'
+
+import {
+  type AnyNodeId,
+  emitter,
+  type GridEvent,
+  type GutterEvent,
+  type RoofEvent,
+  sceneRegistry,
+} from '@pascal-app/core'
+import { DragBoundingBox } from '@pascal-app/editor'
+import { useEffect, useRef, useState } from 'react'
+import { Vector3 } from 'three'
+
+const INVALID_PREVIEW_COLOR = 0xef_44_44
+type ValidTarget = 'roof' | 'gutter'
+
+export function RoofAttachmentFallbackPreview({
+  activeBuildingId,
+  isValidRoofTarget,
+  lift = 0,
+  onInvalidTarget,
+  size,
+  validTarget = 'roof',
+}: {
+  activeBuildingId: string | null | undefined
+  isValidRoofTarget?: (event: RoofEvent) => boolean
+  lift?: number
+  onInvalidTarget?: () => void
+  size: [number, number, number]
+  validTarget?: ValidTarget
+}) {
+  const [position, setPosition] = useState<[number, number, number] | null>(null)
+  const lastValidTargetEventRef = useRef<unknown>(null)
+  const localPointRef = useRef(new Vector3())
+  const isValidRoofTargetRef = useRef(isValidRoofTarget)
+  const onInvalidTargetRef = useRef(onInvalidTarget)
+  isValidRoofTargetRef.current = isValidRoofTarget
+  onInvalidTargetRef.current = onInvalidTarget
+
+  useEffect(() => {
+    if (!activeBuildingId) {
+      setPosition(null)
+      lastValidTargetEventRef.current = null
+      return
+    }
+
+    const trackValidHit = (nativeEvent: unknown) => {
+      lastValidTargetEventRef.current = nativeEvent
+      setPosition(null)
+    }
+    const showInvalidAt = (x: number, y: number, z: number) => {
+      setPosition([x, y + lift, z])
+      onInvalidTargetRef.current?.()
+    }
+    const showInvalidAtWorld = (event: RoofEvent) => {
+      const point = localPointRef.current.set(...event.position)
+      const building = sceneRegistry.nodes.get(activeBuildingId as AnyNodeId)
+      if (building) {
+        building.updateWorldMatrix(true, false)
+        building.worldToLocal(point)
+      }
+      showInvalidAt(point.x, 0, point.z)
+    }
+    const onRoofHit = (event: RoofEvent) => {
+      if (isValidRoofTargetRef.current?.(event) === false) {
+        showInvalidAtWorld(event)
+        return
+      }
+      trackValidHit(event.nativeEvent)
+    }
+    const onGutterHit = (event: GutterEvent) => trackValidHit(event.nativeEvent)
+
+    const onGridMove = (event: GridEvent) => {
+      if (event.nativeEvent === lastValidTargetEventRef.current) return
+      const [x, y, z] = event.localPosition
+      showInvalidAt(x, y, z)
+    }
+
+    if (validTarget === 'roof') {
+      emitter.on('roof:enter', onRoofHit)
+      emitter.on('roof:move', onRoofHit)
+    } else {
+      emitter.on('gutter:enter', onGutterHit)
+      emitter.on('gutter:move', onGutterHit)
+    }
+    emitter.on('grid:move', onGridMove)
+
+    return () => {
+      if (validTarget === 'roof') {
+        emitter.off('roof:enter', onRoofHit)
+        emitter.off('roof:move', onRoofHit)
+      } else {
+        emitter.off('gutter:enter', onGutterHit)
+        emitter.off('gutter:move', onGutterHit)
+      }
+      emitter.off('grid:move', onGridMove)
+    }
+  }, [activeBuildingId, lift, validTarget])
+
+  if (!(activeBuildingId && position)) return null
+
+  return (
+    <DragBoundingBox
+      color={INVALID_PREVIEW_COLOR}
+      nodeId="roof-attachment-fallback"
+      position={position}
+      size={size}
+    />
+  )
+}

packages/nodes/src/shared/roof-wall-opening-placement.ts

@@ -88,7 +88,10 @@ const cursorPoint = new Vector3()
 export function worldToSelectedBuildingLocal(point: Vector3): [number, number, number] {
   const buildingId = useViewer.getState().selection.buildingId
   const buildingObj = buildingId ? sceneRegistry.nodes.get(buildingId as AnyNodeId) : undefined
-  if (buildingObj) buildingObj.worldToLocal(point)
+  if (buildingObj) {
+    buildingObj.updateWorldMatrix(true, false)
+    buildingObj.worldToLocal(point)
+  }
   return [point.x, point.y, point.z]
 }
 

packages/nodes/src/shelf/definition.ts

@@ -258,6 +258,7 @@ export const shelfDefinition: NodeDefinition<typeof ShelfNode> = {
   tool: () => import('./tool'),
   toolHints: [
     { key: 'Left click', label: 'Place shelf' },
+    { key: 'Shift', label: 'Free place' },
     { key: 'Esc', label: 'Cancel' },
   ],
 

packages/nodes/src/skylight/move-tool.tsx

@@ -10,7 +10,12 @@ import {
   sceneRegistry,
   useScene,
 } from '@pascal-app/core'
-import { markToolCancelConsumed, triggerSFX, useEditor } from '@pascal-app/editor'
+import {
+  consumePlacementDragRelease,
+  markToolCancelConsumed,
+  triggerSFX,
+  useEditor,
+} from '@pascal-app/editor'
 import { useCallback, useEffect, useRef, useState } from 'react'
 import * as THREE from 'three'
 import {
@@ -65,8 +70,14 @@ export default function MoveSkylightTool({ node }: { node: SkylightNode }) {
     let lastSnapX = 0
     let lastSnapZ = 0
     let lastTarget: RelativeRoofDragTarget | null = null
+    let committed = false
     const roofDrag = createRelativeRoofDrag(original)
 
+    const clearTarget = () => {
+      lastTarget = null
+      setHasHit(false)
+    }
+
     // Resolve which segment the cursor is over, then derive the same
     // preview transform stack the placement tool uses (`skylight/tool.tsx`):
     // analytical surface normal in segment-local frame → outer yaw =
@@ -77,7 +88,7 @@ export default function MoveSkylightTool({ node }: { node: SkylightNode }) {
       const roof = event.node as RoofNode
       const target = roofDrag.resolve(event)
       if (!target) {
-        setHasHit(false)
+        clearTarget()
         return false
       }
       lastTarget = target
@@ -113,10 +124,12 @@ export default function MoveSkylightTool({ node }: { node: SkylightNode }) {
     }
 
     const onRoofClick = (event: RoofEvent) => {
+      if (committed) return
       const st = useScene.getState()
 
       const target = lastTarget ?? roofDrag.resolve(event)
       if (!target) return
+      committed = true
 
       const targetSegmentId = target.segment.id as AnyNodeId
       const finalRotation = original.rotation
@@ -206,16 +219,29 @@ export default function MoveSkylightTool({ node }: { node: SkylightNode }) {
       exitMoveMode()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      if (!lastTarget) return
+      onRoofClick({
+        nativeEvent: event,
+        stopPropagation: () => event.stopPropagation(),
+      } as unknown as RoofEvent)
+    }
+
     emitter.on('roof:move', onRoofMove)
     emitter.on('roof:enter', onRoofEnter)
     emitter.on('roof:click', onRoofClick)
+    emitter.on('roof:leave', clearTarget)
     emitter.on('tool:cancel', onCancel)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       emitter.off('roof:move', onRoofMove)
       emitter.off('roof:enter', onRoofEnter)
       emitter.off('roof:click', onRoofClick)
+      emitter.off('roof:leave', clearTarget)
       emitter.off('tool:cancel', onCancel)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
 
       const obj = sceneRegistry.nodes.get(node.id)
       if (obj) obj.visible = true

packages/nodes/src/skylight/tool.tsx

@@ -13,6 +13,7 @@ import { triggerSFX } from '@pascal-app/editor'
 import { useViewer } from '@pascal-app/viewer'
 import { useEffect, useMemo, useRef, useState } from 'react'
 import * as THREE from 'three'
+import { RoofAttachmentFallbackPreview } from '../shared/roof-attachment-fallback-preview'
 import { resolveRoofSegmentHit } from '../shared/roof-segment-hit'
 import { getAnalyticalNormal, surfaceQuatFromNormal } from '../shared/roof-surface'
 import { skylightDefinition } from './definition'
@@ -109,16 +110,26 @@ const SkylightTool = () => {
     }
   }, [activeBuildingId, setSelection])
 
-  if (!activeBuildingId || !previewPos || !previewSurfaceQuat) return null
-
   return (
-    <group position={previewPos}>
-      <group rotation-y={previewYaw}>
-        <group quaternion={previewSurfaceQuat}>
-          <SkylightPreview node={previewNode} />
+    <>
+      <RoofAttachmentFallbackPreview
+        activeBuildingId={activeBuildingId}
+        onInvalidTarget={() => {
+          setPreviewPos(null)
+          setPreviewSurfaceQuat(null)
+        }}
+        size={[1.2, 0.2, 1]}
+      />
+      {activeBuildingId && previewPos && previewSurfaceQuat && (
+        <group position={previewPos}>
+          <group rotation-y={previewYaw}>
+            <group quaternion={previewSurfaceQuat}>
+              <SkylightPreview node={previewNode} />
+            </group>
+          </group>
         </group>
-      </group>
-    </group>
+      )}
+    </>
   )
 }
 

packages/nodes/src/slab/definition.ts

@@ -201,6 +201,7 @@ export const slabDefinition: NodeDefinition<typeof SlabNode> = {
   toolHints: [
     { key: 'Left click', label: 'Trace slab outline' },
     { key: 'Enter', label: 'Finish slab' },
+    { key: 'Shift', label: 'Free outline' },
     { key: 'Esc', label: 'Cancel' },
   ],
 

packages/nodes/src/slab/move-tool.tsx

@@ -16,6 +16,7 @@ import {
 } from '@pascal-app/core'
 import {
   CursorSphere,
+  consumePlacementDragRelease,
   getSegmentGridStep,
   markToolCancelConsumed,
   resolveAlignmentForActiveBuilding,
@@ -214,6 +215,7 @@ export const MoveSlabTool: React.FC<{ node: SlabNode }> = ({ node }) => {
     }
 
     const onGridClick = (event: GridEvent) => {
+      if (wasCommitted) return
       if (isFloorplanSourcedEvent(event)) return
       if (Date.now() - activatedAtRef.current < 150) {
         event.nativeEvent?.stopPropagation?.()
@@ -245,6 +247,12 @@ export const MoveSlabTool: React.FC<{ node: SlabNode }> = ({ node }) => {
       event.nativeEvent?.stopPropagation?.()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      activatedAtRef.current = 0
+      onGridClick({ nativeEvent: event } as unknown as GridEvent)
+    }
+
     const onCancel = () => {
       // No scene state to roll back — we never wrote anything. Just
       // restore the mesh visual.
@@ -258,6 +266,7 @@ export const MoveSlabTool: React.FC<{ node: SlabNode }> = ({ node }) => {
     emitter.on('grid:move', onGridMove)
     emitter.on('grid:click', onGridClick)
     emitter.on('tool:cancel', onCancel)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       useAlignmentGuides.getState().clear()
@@ -269,6 +278,7 @@ export const MoveSlabTool: React.FC<{ node: SlabNode }> = ({ node }) => {
       emitter.off('grid:move', onGridMove)
       emitter.off('grid:click', onGridClick)
       emitter.off('tool:cancel', onCancel)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
     }
   }, [exitMoveMode, node.id, node.parentId])
 

packages/nodes/src/solar-panel/move-tool.tsx

@@ -9,7 +9,13 @@ import {
   sceneRegistry,
   useScene,
 } from '@pascal-app/core'
-import { EDITOR_LAYER, markToolCancelConsumed, triggerSFX, useEditor } from '@pascal-app/editor'
+import {
+  consumePlacementDragRelease,
+  EDITOR_LAYER,
+  markToolCancelConsumed,
+  triggerSFX,
+  useEditor,
+} from '@pascal-app/editor'
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react'
 import * as THREE from 'three'
 import {
@@ -91,11 +97,20 @@ export default function MoveSolarPanelTool({ node }: { node: SolarPanelNode }) {
     let lastSnapX = 0
     let lastSnapZ = 0
     let lastTarget: RelativeRoofDragTarget | null = null
+    let committed = false
     const roofDrag = createRelativeRoofDrag(original)
 
+    const clearTarget = () => {
+      lastTarget = null
+      setHasHit(false)
+    }
+
     const updateGhost = (event: RoofEvent) => {
       const target = roofDrag.resolve(event)
-      if (!target) return
+      if (!target) {
+        clearTarget()
+        return
+      }
       lastTarget = target
 
       const sx = Math.round(target.localX * 20) / 20
@@ -127,10 +142,12 @@ export default function MoveSolarPanelTool({ node }: { node: SolarPanelNode }) {
     }
 
     const onRoofClick = (event: RoofEvent) => {
+      if (committed) return
       const st = useScene.getState()
 
       const target = lastTarget ?? roofDrag.resolve(event)
       if (!target) return
+      committed = true
 
       const targetSegmentId = target.segment.id as AnyNodeId
 
@@ -227,16 +244,29 @@ export default function MoveSolarPanelTool({ node }: { node: SolarPanelNode }) {
       exitMoveMode()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      if (!lastTarget) return
+      onRoofClick({
+        nativeEvent: event,
+        stopPropagation: () => event.stopPropagation(),
+      } as unknown as RoofEvent)
+    }
+
     emitter.on('roof:move', updateGhost)
     emitter.on('roof:enter', updateGhost)
     emitter.on('roof:click', onRoofClick)
+    emitter.on('roof:leave', clearTarget)
     emitter.on('tool:cancel', onCancel)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       emitter.off('roof:move', updateGhost)
       emitter.off('roof:enter', updateGhost)
       emitter.off('roof:click', onRoofClick)
+      emitter.off('roof:leave', clearTarget)
       emitter.off('tool:cancel', onCancel)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
 
       const obj = sceneRegistry.nodes.get(node.id)
       if (obj) obj.visible = true

packages/nodes/src/solar-panel/tool.tsx

@@ -13,6 +13,7 @@ import { triggerSFX } from '@pascal-app/editor'
 import { useViewer } from '@pascal-app/viewer'
 import { useEffect, useMemo, useRef, useState } from 'react'
 import * as THREE from 'three'
+import { RoofAttachmentFallbackPreview } from '../shared/roof-attachment-fallback-preview'
 import { resolveRoofSegmentHit } from '../shared/roof-segment-hit'
 import { getAnalyticalNormal, surfaceQuatFromNormal } from '../shared/roof-surface'
 import { solarPanelDefinition } from './definition'
@@ -130,16 +131,26 @@ const SolarPanelTool = () => {
     }
   }, [activeBuildingId, setSelection])
 
-  if (!activeBuildingId || !previewPos || !previewSurfaceQuat) return null
-
   return (
-    <group position={previewPos}>
-      <group rotation-y={previewYaw}>
-        <group quaternion={previewSurfaceQuat}>
-          <SolarPanelPreview node={previewNode} />
+    <>
+      <RoofAttachmentFallbackPreview
+        activeBuildingId={activeBuildingId}
+        onInvalidTarget={() => {
+          setPreviewPos(null)
+          setPreviewSurfaceQuat(null)
+        }}
+        size={[1.8, 0.2, 1.2]}
+      />
+      {activeBuildingId && previewPos && previewSurfaceQuat && (
+        <group position={previewPos}>
+          <group rotation-y={previewYaw}>
+            <group quaternion={previewSurfaceQuat}>
+              <SolarPanelPreview node={previewNode} />
+            </group>
+          </group>
         </group>
-      </group>
-    </group>
+      )}
+    </>
   )
 }
 

packages/nodes/src/spawn/definition.ts

@@ -100,6 +100,7 @@ export const spawnDefinition: NodeDefinition<typeof SpawnNode> = {
   tool: () => import('./tool'),
   toolHints: [
     { key: 'Left click', label: 'Place spawn point' },
+    { key: 'Shift', label: 'Free place' },
     { key: 'Esc', label: 'Cancel' },
   ],
 

packages/nodes/src/turbine-vent/move-tool.tsx

@@ -9,7 +9,12 @@ import {
   type TurbineVentNode,
   useScene,
 } from '@pascal-app/core'
-import { markToolCancelConsumed, triggerSFX, useEditor } from '@pascal-app/editor'
+import {
+  consumePlacementDragRelease,
+  markToolCancelConsumed,
+  triggerSFX,
+  useEditor,
+} from '@pascal-app/editor'
 import { useCallback, useEffect, useState } from 'react'
 import * as THREE from 'three'
 import {
@@ -58,11 +63,22 @@ export default function MoveTurbineVentTool({ node }: { node: TurbineVentNode })
 
     let lastSnap: [number, number] | null = null
     let lastTarget: RelativeRoofDragTarget | null = null
+    let committed = false
     const roofDrag = createRelativeRoofDrag(original)
 
+    const clearTarget = () => {
+      lastTarget = null
+      lastSnap = null
+      setPreviewPos(null)
+      setPreviewSurfaceQuat(null)
+    }
+
     const updatePreview = (event: RoofEvent) => {
       const target = roofDrag.resolve(event)
-      if (!target) return
+      if (!target) {
+        clearTarget()
+        return
+      }
       lastTarget = target
 
       const sx = Math.round(target.localX * 20) / 20
@@ -89,8 +105,10 @@ export default function MoveTurbineVentTool({ node }: { node: TurbineVentNode })
     }
 
     const onRoofClick = (event: RoofEvent) => {
+      if (committed) return
       const target = lastTarget ?? roofDrag.resolve(event)
       if (!target) return
+      committed = true
       const targetSegmentId = target.segment.id as AnyNodeId
       const st = useScene.getState()
 
@@ -169,16 +187,29 @@ export default function MoveTurbineVentTool({ node }: { node: TurbineVentNode })
       exitMoveMode()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      if (!lastTarget) return
+      onRoofClick({
+        nativeEvent: event,
+        stopPropagation: () => event.stopPropagation(),
+      } as unknown as RoofEvent)
+    }
+
     emitter.on('roof:move', updatePreview)
     emitter.on('roof:enter', updatePreview)
     emitter.on('roof:click', onRoofClick)
+    emitter.on('roof:leave', clearTarget)
     emitter.on('tool:cancel', onCancel)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       emitter.off('roof:move', updatePreview)
       emitter.off('roof:enter', updatePreview)
       emitter.off('roof:click', onRoofClick)
+      emitter.off('roof:leave', clearTarget)
       emitter.off('tool:cancel', onCancel)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
 
       const obj = sceneRegistry.nodes.get(node.id)
       if (obj) obj.visible = true

packages/nodes/src/turbine-vent/tool.tsx

@@ -13,6 +13,7 @@ import { triggerSFX } from '@pascal-app/editor'
 import { useViewer } from '@pascal-app/viewer'
 import { useEffect, useMemo, useRef, useState } from 'react'
 import * as THREE from 'three'
+import { RoofAttachmentFallbackPreview } from '../shared/roof-attachment-fallback-preview'
 import { resolveRoofSegmentHit } from '../shared/roof-segment-hit'
 import { getAnalyticalNormal, getDownSlopeYaw, surfaceQuatFromNormal } from '../shared/roof-surface'
 import { turbineVentDefinition } from './definition'
@@ -117,16 +118,26 @@ const TurbineVentTool = () => {
     }
   }, [activeBuildingId, setSelection])
 
-  if (!activeBuildingId || !previewPos || !previewSurfaceQuat) return null
-
   return (
-    <group position={previewPos}>
-      <group rotation-y={previewYaw}>
-        <group quaternion={previewSurfaceQuat}>
-          <TurbineVentPreview node={previewNode} />
+    <>
+      <RoofAttachmentFallbackPreview
+        activeBuildingId={activeBuildingId}
+        onInvalidTarget={() => {
+          setPreviewPos(null)
+          setPreviewSurfaceQuat(null)
+        }}
+        size={[0.5, 0.8, 0.5]}
+      />
+      {activeBuildingId && previewPos && previewSurfaceQuat && (
+        <group position={previewPos}>
+          <group rotation-y={previewYaw}>
+            <group quaternion={previewSurfaceQuat}>
+              <TurbineVentPreview node={previewNode} />
+            </group>
+          </group>
         </group>
-      </group>
-    </group>
+      )}
+    </>
   )
 }
 

packages/nodes/src/wall/tool.tsx

@@ -508,9 +508,13 @@ export const WallTool: React.FC = () => {
     }
 
     // Align the drafted point onto another object's nearest real anchor and
-    // publish the guide. Alt bypasses. Returns the (possibly snapped) point.
-    const alignPoint = (point: WallPlanPoint, bypass: boolean): WallPlanPoint => {
-      if (bypass || alignmentCandidates.length === 0) {
+    // publish the guide. Alt bypasses alignment; Shift bypasses all guided
+    // snapping. Returns the possibly snapped point.
+    const alignPoint = (
+      point: WallPlanPoint,
+      options: { applySnap?: boolean; bypass?: boolean },
+    ): WallPlanPoint => {
+      if (options.bypass || alignmentCandidates.length === 0) {
         useAlignmentGuides.getState().clear()
         return point
       }
@@ -520,7 +524,9 @@ export const WallTool: React.FC = () => {
         threshold: ALIGNMENT_THRESHOLD_M,
       })
       useAlignmentGuides.getState().set(ar.guides)
-      return ar.snap ? [point[0] + ar.snap.dx, point[1] + ar.snap.dz] : point
+      return ar.snap && options.applySnap !== false
+        ? [point[0] + ar.snap.dx, point[1] + ar.snap.dz]
+        : point
     }
 
     const stopDrafting = () => {
@@ -554,7 +560,10 @@ export const WallTool: React.FC = () => {
         bypassSnap,
         magnetic: !bypassSnap && useEditor.getState().magneticSnap,
       })
-      gridPosition = alignPoint(snapResult.point, bypassAlign || angleLocked)
+      gridPosition = alignPoint(snapResult.point, {
+        applySnap: !angleLocked,
+        bypass: bypassAlign,
+      })
       // Stand the magnetic beacon at the endpoint when it locked onto an
       // existing wall corner / wall point; clear it for plain grid/angle moves.
       useWallSnapIndicator
@@ -635,7 +644,7 @@ export const WallTool: React.FC = () => {
             bypassSnap,
             magnetic: !bypassSnap && useEditor.getState().magneticSnap,
           }).point,
-          bypassAlign,
+          { bypass: bypassAlign },
         )
         gridPosition = snappedStart
         startingPoint.current.set(snappedStart[0], event.localPosition[1], snappedStart[1])
@@ -666,7 +675,10 @@ export const WallTool: React.FC = () => {
             bypassSnap,
             magnetic: !bypassSnap && useEditor.getState().magneticSnap,
           }).point,
-          bypassAlign || angleLocked,
+          {
+            applySnap: !angleLocked,
+            bypass: bypassAlign,
+          },
         )
         const dx = snappedEnd[0] - startingPoint.current.x
         const dz = snappedEnd[1] - startingPoint.current.z

packages/nodes/src/window/definition.ts

@@ -197,6 +197,7 @@ export const windowDefinition: NodeDefinition<typeof WindowNode> = {
 
   toolHints: [
     { key: 'Left click', label: 'Place window on wall' },
+    { key: 'Shift', label: 'Free place' },
     { key: 'Esc', label: 'Cancel' },
   ],
 

packages/nodes/src/window/move-tool.tsx

@@ -15,6 +15,7 @@ import {
 import {
   calculateCursorRotation,
   calculateItemRotation,
+  consumePlacementDragRelease,
   EDITOR_LAYER,
   getSideFromNormal,
   isValidWallSideFace,
@@ -99,6 +100,7 @@ const MoveWindowTool: React.FC<{ node: WindowNode }> = ({ node: movingWindowNode
     }
 
     let currentHostId: string | null = movingWindowNode.parentId
+    let committed = false
     let dragAnchor: {
       wallId: string
       rawX: number
@@ -117,6 +119,7 @@ const MoveWindowTool: React.FC<{ node: WindowNode }> = ({ node: movingWindowNode
       valid: boolean
       event: WallEvent
     } | null = null
+    let lastRoofEvent: RoofEvent | null = null
 
     const markHostDirty = (hostId: string | null) => {
       if (hostId) useScene.getState().dirtyNodes.add(hostId as AnyNodeId)
@@ -285,29 +288,44 @@ const MoveWindowTool: React.FC<{ node: WindowNode }> = ({ node: movingWindowNode
 
     const onWallEnter = (event: WallEvent) => {
       const target = resolveMoveTarget(event)
-      if (!target) return
+      if (!target) {
+        onWallLeave()
+        return
+      }
       lastTarget = target
+      lastRoofEvent = null
       applyPreview(target)
       event.stopPropagation()
     }
 
     const onWallMove = (event: WallEvent) => {
-      if (!isValidWallSideFace(event.normal)) return
+      if (!isValidWallSideFace(event.normal)) {
+        onWallLeave()
+        return
+      }
       if (isCurvedWall(event.node)) {
-        hideCursor()
+        onWallLeave()
         return
       }
       // Only interact with walls on the current level
-      if (event.node.parentId !== getLevelId()) return
+      if (event.node.parentId !== getLevelId()) {
+        onWallLeave()
+        return
+      }
 
       const target = resolveMoveTarget(event)
-      if (!target) return
+      if (!target) {
+        onWallLeave()
+        return
+      }
       lastTarget = target
+      lastRoofEvent = null
       applyPreview(target)
       event.stopPropagation()
     }
 
     const onWallClick = (event: WallEvent) => {
+      if (committed) return
       if (!isValidWallSideFace(event.normal)) return
       if (isCurvedWall(event.node)) return
       // Only interact with walls on the current level
@@ -315,6 +333,7 @@ const MoveWindowTool: React.FC<{ node: WindowNode }> = ({ node: movingWindowNode
 
       const target = lastTarget?.wallId === event.node.id ? lastTarget : resolveMoveTarget(event)
       if (!target?.valid) return
+      committed = true
 
       let placedId: string
 
@@ -387,6 +406,7 @@ const MoveWindowTool: React.FC<{ node: WindowNode }> = ({ node: movingWindowNode
       useLiveTransforms.getState().clear(movingWindowNode.id)
       dragAnchor = null
       lastTarget = null
+      lastRoofEvent = null
       if (isNew) return // No original to restore for duplicates
       // Move mode: restore to original position while off-wall
       if (currentHostId && currentHostId !== original.parentId) {
@@ -430,10 +450,14 @@ const MoveWindowTool: React.FC<{ node: WindowNode }> = ({ node: movingWindowNode
 
     const onRoofHover = (event: RoofEvent) => {
       const target = resolveRoofMoveTarget(event)
-      if (!target) return
+      if (!target) {
+        onRoofLeave()
+        return
+      }
       // Wall-frame drag anchor / live transform don't apply on a roof face.
       dragAnchor = null
       lastTarget = null
+      lastRoofEvent = event
       useLiveTransforms.getState().clear(movingWindowNode.id)
       if (currentHostId !== target.segment.id) {
         useScene.getState().updateNode(movingWindowNode.id, {
@@ -459,8 +483,10 @@ const MoveWindowTool: React.FC<{ node: WindowNode }> = ({ node: movingWindowNode
     }
 
     const onRoofClick = (event: RoofEvent) => {
+      if (committed) return
       const target = resolveRoofMoveTarget(event)
       if (!target?.valid) return
+      committed = true
       const segmentId = target.segment.id
 
       let placedId: string
@@ -531,6 +557,7 @@ const MoveWindowTool: React.FC<{ node: WindowNode }> = ({ node: movingWindowNode
       useLiveTransforms.getState().clear(movingWindowNode.id)
       dragAnchor = null
       lastTarget = null
+      lastRoofEvent = null
       if (isNew) return
       if (currentHostId && currentHostId !== original.parentId) {
         markHostDirty(currentHostId)
@@ -571,6 +598,15 @@ const MoveWindowTool: React.FC<{ node: WindowNode }> = ({ node: movingWindowNode
       exitMoveMode()
     }
 
+    const onPlacementDragPointerUp = (event: PointerEvent) => {
+      if (!consumePlacementDragRelease(event)) return
+      if (lastTarget) {
+        onWallClick(lastTarget.event)
+        return
+      }
+      if (lastRoofEvent) onRoofClick(lastRoofEvent)
+    }
+
     emitter.on('wall:enter', onWallEnter)
     emitter.on('wall:move', onWallMove)
     emitter.on('wall:click', onWallClick)
@@ -580,6 +616,7 @@ const MoveWindowTool: React.FC<{ node: WindowNode }> = ({ node: movingWindowNode
     emitter.on('roof:click', onRoofClick)
     emitter.on('roof:leave', onRoofLeave)
     emitter.on('tool:cancel', onCancel)
+    window.addEventListener('pointerup', onPlacementDragPointerUp)
 
     return () => {
       // Safety cleanup: if still transient on unmount (e.g. phase switch mid-move)
@@ -617,6 +654,7 @@ const MoveWindowTool: React.FC<{ node: WindowNode }> = ({ node: movingWindowNode
       emitter.off('roof:click', onRoofClick)
       emitter.off('roof:leave', onRoofLeave)
       emitter.off('tool:cancel', onCancel)
+      window.removeEventListener('pointerup', onPlacementDragPointerUp)
     }
   }, [movingWindowNode, exitMoveMode])
 

packages/nodes/src/window/tool.tsx

@@ -2,6 +2,7 @@ import {
   type AnyNodeId,
   collectAlignmentAnchors,
   emitter,
+  type GridEvent,
   isCurvedWall,
   type RoofEvent,
   type RoofNode,
@@ -23,12 +24,13 @@ import {
 } from '@pascal-app/editor'
 import { useViewer } from '@pascal-app/viewer'
 import { useEffect, useRef } from 'react'
-import { BoxGeometry, EdgesGeometry, type Group, type LineSegments } from 'three'
+import { BoxGeometry, EdgesGeometry, type Group, type LineSegments, Vector3 } from 'three'
 import { LineBasicNodeMaterial } from 'three/webgpu'
 import {
   getRoofWallOpeningCursorPose,
   type RoofWallOpeningTarget,
   resolveRoofWallOpeningTarget,
+  worldToSelectedBuildingLocal,
 } from '../shared/roof-wall-opening-placement'
 import { resolveWallSlideAlignment } from '../shared/wall-opening-alignment'
 import { clampToWall, hasWallChildOverlap, wallLocalToWorld } from './window-math'
@@ -41,6 +43,11 @@ const edgeMaterial = new LineBasicNodeMaterial({
   depthWrite: false,
 })
 
+const FALLBACK_WIDTH = 1.5
+const FALLBACK_HEIGHT = 1.5
+const FALLBACK_SILL_LIFT = 0.45
+const roofFallbackPoint = new Vector3()
+
 /**
  * Window tool — places WindowNodes on walls and on roof-segment wall
  * faces (the generated base walls under a roof, including coplanar gable
@@ -103,17 +110,48 @@ const WindowTool: React.FC = () => {
       edgeMaterial.color.setHex(valid ? 0x22_c5_5e : 0xef_44_44)
     }
 
+    const showFallbackCursor = (event: GridEvent) => {
+      if (draftRef.current) return
+      const [x, y, z] = event.localPosition
+      updateCursor([x, y + FALLBACK_HEIGHT / 2 + FALLBACK_SILL_LIFT, z], 0, false)
+      useAlignmentGuides.getState().clear()
+    }
+
+    const showRoofFallbackCursor = (event: RoofEvent) => {
+      const [x, , z] = worldToSelectedBuildingLocal(roofFallbackPoint.set(...event.position))
+      updateCursor([x, getLevelYOffset() + FALLBACK_HEIGHT / 2 + FALLBACK_SILL_LIFT, z], 0, false)
+      useAlignmentGuides.getState().clear()
+    }
+
+    const showWallFallbackCursor = (event: WallEvent) => {
+      const [x, , z] = worldToSelectedBuildingLocal(roofFallbackPoint.set(...event.position))
+      updateCursor([x, getLevelYOffset() + FALLBACK_HEIGHT / 2 + FALLBACK_SILL_LIFT, z], 0, false)
+      useAlignmentGuides.getState().clear()
+    }
+
     const onWallEnter = (event: WallEvent) => {
-      if (!isValidWallSideFace(event.normal)) return
+      if (!isValidWallSideFace(event.normal)) {
+        destroyDraft()
+        showWallFallbackCursor(event)
+        return
+      }
       if (isCurvedWall(event.node)) {
         destroyDraft()
-        hideCursor()
+        showWallFallbackCursor(event)
         return
       }
       const levelId = getLevelId()
-      if (!levelId) return
+      if (!levelId) {
+        destroyDraft()
+        showWallFallbackCursor(event)
+        return
+      }
       // Only interact with walls on the current level
-      if (event.node.parentId !== levelId) return
+      if (event.node.parentId !== levelId) {
+        destroyDraft()
+        showWallFallbackCursor(event)
+        return
+      }
 
       destroyDraft()
 
@@ -167,14 +205,22 @@ const WindowTool: React.FC = () => {
     }
 
     const onWallMove = (event: WallEvent) => {
-      if (!isValidWallSideFace(event.normal)) return
+      if (!isValidWallSideFace(event.normal)) {
+        destroyDraft()
+        showWallFallbackCursor(event)
+        return
+      }
       if (isCurvedWall(event.node)) {
         destroyDraft()
-        hideCursor()
+        showWallFallbackCursor(event)
         return
       }
       // Only interact with walls on the current level
-      if (event.node.parentId !== getLevelId()) return
+      if (event.node.parentId !== getLevelId()) {
+        destroyDraft()
+        showWallFallbackCursor(event)
+        return
+      }
 
       const side = getSideFromNormal(event.normal)
       const itemRotation = calculateItemRotation(event.normal)
@@ -395,10 +441,8 @@ const WindowTool: React.FC = () => {
       if (!target) {
         // On the roof but not over a placeable wall face (slope, soffit,
         // or a face the window cannot fit on).
-        if (draftRef.current?.roofSegmentId) {
-          destroyDraft()
-          hideCursor()
-        }
+        destroyDraft()
+        showRoofFallbackCursor(event)
         return
       }
       const { segment, face, position } = target
@@ -499,6 +543,7 @@ const WindowTool: React.FC = () => {
     emitter.on('roof:move', onRoofHover)
     emitter.on('roof:click', onRoofClick)
     emitter.on('roof:leave', onRoofLeave)
+    emitter.on('grid:move', showFallbackCursor)
     emitter.on('tool:cancel', onCancel)
 
     return () => {
@@ -514,12 +559,13 @@ const WindowTool: React.FC = () => {
       emitter.off('roof:move', onRoofHover)
       emitter.off('roof:click', onRoofClick)
       emitter.off('roof:leave', onRoofLeave)
+      emitter.off('grid:move', showFallbackCursor)
       emitter.off('tool:cancel', onCancel)
     }
   }, [])
 
-  // Cursor geometry: window outline rectangle (width × height × frameDepth)
-  const boxGeo = new BoxGeometry(1.5, 1.5, 0.07)
+  // Cursor geometry: window outline rectangle.
+  const boxGeo = new BoxGeometry(FALLBACK_WIDTH, FALLBACK_HEIGHT, 0.07)
   const edgesGeo = new EdgesGeometry(boxGeo)
   boxGeo.dispose()
 

wiki/architecture/README.md

@@ -12,7 +12,7 @@ Canonical rules for code that touches `packages/core`, `packages/viewer`, `packa
 | [node-definitions](node-definitions.md) | Three-checkbox composition model for registry-driven kinds (`geometry` / `renderer` / `system`) |
 | [materials-and-themes](materials-and-themes.md) | Surface colour: surface roles, colour presets, the textures axis, and scene themes (appearance / ground / clay tints) |
 | [plugin-authoring](plugin-authoring.md) | Public contract for external plugins — `Plugin` shape, `setPluginDiscovery`, lifecycle, what's in and out of v1 |
-| [tools](tools.md) | Editor tools structure in `apps/editor` |
+| [tools](tools.md) | Editor tools structure, manipulation constraints, and Shift bypass defaults |
 | [viewer-isolation](viewer-isolation.md) | Keeping `@pascal-app/viewer` editor-agnostic |
 | [selection-managers](selection-managers.md) | Two-layer selection (viewer + editor), events, outliner |
 | [scene-registry](scene-registry.md) | Global node ID → Object3D map and `useRegistry` |

wiki/architecture/node-definitions.md

@@ -184,6 +184,28 @@ If the system also handles cascades, animations, or material updates, keep `def.
 - **Dispose on rebuild.** The generic system disposes the previous children's geometry + material before swapping. Custom systems that imperatively add children must dispose what they replace, or accept the GPU-memory cost.
 - **`def.renderer` overrides the generic renderer.** Once you set it, you own the mount — `<ParametricNodeRenderer>` is not invoked. The generic geometry system still runs for the kind if `def.geometry` is set, so a custom renderer can register an empty group and let the system fill it.
 
+## `toolHints`
+
+`toolHints?: ToolHint[]` is the registry-owned source for the floating helper shown while
+a registered placement or draw tool is active.
+
+```ts
+type ToolHint = {
+  key: string
+  label: string
+}
+```
+
+Keep labels short and action-oriented. Prefer the default guided-building language:
+snapping, angle increments, guides, and validation are active unless the user holds Shift
+during the gesture. A `Shift` hint should describe the bypass in user terms, such as
+`Free angle`, `Free place`, or `Bypass guided constraints`.
+
+`HelperManager` renders `def.toolHints` through `RegisteredToolHelper`, and active Shift
+state can update the row to show that guided constraints are currently bypassed. Select
+mode is not owned by a node definition, so its helper is derived separately from
+selection state, selected-node move/rotate capabilities, and held modifiers.
+
 ## Pitfalls
 
 ### `<GeometrySystem>` must not mutate `group.position` / `group.rotation`

wiki/architecture/selection-managers.md

@@ -73,6 +73,21 @@ phase: 'furnish'   → selectable: furniture items only
 
 Clicking a node of a different phase auto-switches the phase. Double-click drills into a context level.
 
+In Select mode, 3D and 2D canvas selection share the same modifier vocabulary:
+
+- `Ctrl/Meta + click` toggles the clicked object in `selectedIds`.
+- `Shift + click` also toggles the clicked canvas object so users can multi-select from
+  either viewport. The scene graph keeps file-browser semantics: `Shift + click` selects
+  the visible range between the last selected row and the clicked row.
+- `Ctrl/Meta + left-drag` on a selected movable object starts direct move from the canvas.
+- `Ctrl/Meta + right-drag` on a selected rotatable object starts direct rotation from the
+  canvas. Rotation snaps to the default angle increment unless Shift is held during the
+  drag.
+
+The floating helper in `packages/editor/src/components/ui/helpers/helper-manager.tsx`
+mirrors these rules from current selection state and held modifiers. Keep that helper and
+the shortcut dialog in sync when changing selection gestures.
+
 ---
 
 ## Rules

wiki/architecture/tools.md

@@ -66,6 +66,27 @@ export function MyTool() {
   - The offset must be cleared on tool unmount, cancel, *and* commit — both `mesh.position.set(0, 0, 0)` and `useLiveTransforms.clear(id)`.
   - The tool must not generate or mutate geometry in this path — only transform writes. Geometry generation still belongs in a core system.
 - **No business logic in tools** — delegate geometry/constraint rules to core systems.
+- **Guided manipulation is the default.** Placement, move, rotate, resize, endpoint drag,
+  and handle drag should behave as guided building mode: they help the user build quickly
+  with fewer mistakes through grid/object snapping, canonical angle increments,
+  alignment guides, and distance feedback. Holding Shift is the standard live bypass for
+  those constraints: while Shift is held, tools should commit the raw pointer/angle
+  proposal instead of applying sticky snap or angle corrections. Passive measurement
+  guides may remain visible only when they do not alter the proposal. If an interaction
+  cannot use Shift because of an established shortcut or topology rule, document the
+  opt-out in its manipulation policy and explain the replacement behavior.
+- **Constraints and guides can be decoupled.** When a stronger constraint owns the
+  proposal, such as a wall segment's 15° angle lock, the tool may still publish passive
+  dashed alignment/proximity guides as long as it does not apply the guide snap delta.
+  Use this for chained wall segments: users keep the fast constrained draft, but still see
+  proximity feedback for later points. Shift remains the hard bypass for both correction
+  and guide feedback.
+- **Help must mirror manipulation policy.** The shortcut dialog and floating helper panel
+  are part of the interaction contract. Static shortcut docs should describe guided
+  building as the default and Shift as the live bypass. Floating help should be contextual
+  when enough state exists: Select mode can derive direct move, direct rotate,
+  multi-select, and Shift-bypass tips from the selected nodes and active modifiers; active
+  tools can highlight the Shift bypass row while the modifier is held.
 - **Preview geometry is local** — transient meshes shown while a tool is active live in the tool component, not in the scene store.
 - **Clean up on unmount** — remove any pending/incomplete nodes *and* any live transforms/mesh offsets when the tool unmounts.
 - **Tools must not import from `@pascal-app/viewer`** — use the scene store and core hooks only. `sceneRegistry` is exported from `@pascal-app/core` and is the allowed door into the Three.js graph for the narrow purposes above.