fix(studio): crop tool stands down for clips it cannot edit

The always-on crop lifted EVERY selected element's clip-path and restored
only what it could parse as a px inset — selecting an element with a
circle/polygon/percentage clip visually un-clipped it, and deselecting
deleted the authored clip outright.

readElementCropInsets is now tri-state (zeros = no clip, null = a clip
the tool can't represent): uneditable clips get no lift and no handles,
and the lift restores the pre-lift inline value verbatim unless a crop
gesture actually committed.

packages/studio/src/components/editor/DomEditCropHandles.tsx

@@ -77,36 +77,23 @@ export function DomEditCropHandles({
 }: DomEditCropHandlesProps) {
   const gestureRef = useRef<CropGestureState | null>(null);
   const [dragging, setDragging] = useState(false);
-  const [state, setState] = useState(() => {
-    const parsed = readElementCropInsets(selection.element);
-    return {
-      element: selection.element,
-      insets: {
-        top: parsed.top,
-        right: parsed.right,
-        bottom: parsed.bottom,
-        left: parsed.left,
-      } as ClipPathInsetSides,
-      radius: parsed.radius,
-    };
-  });
+  // readElementCropInsets returns null for a clip this tool can't represent
+  // (circle/polygon/non-px inset): the crop UI must fully stand down for that
+  // element — no lift, no handles — or select+deselect replaces the authored
+  // clip with an inset (or deletes it).
+  const cropStateFor = (element: HTMLElement) => {
+    const parsed = readElementCropInsets(element);
+    const { radius, ...insets } = parsed ?? { top: 0, right: 0, bottom: 0, left: 0, radius: 0 };
+    return { element, croppable: parsed !== null, insets: insets as ClipPathInsetSides, radius };
+  };
+  const [state, setState] = useState(() => cropStateFor(selection.element));
 
   // Re-sync when the selection targets a different element (reselect, or an
   // undo/redo that re-keys the node): read its committed crop before the lift
   // effect runs. Read inside the guard so a drag's per-frame setState doesn't
   // re-run getComputedStyle every frame.
   if (state.element !== selection.element) {
-    const liveInsets = readElementCropInsets(selection.element);
-    setState({
-      element: selection.element,
-      insets: {
-        top: liveInsets.top,
-        right: liveInsets.right,
-        bottom: liveInsets.bottom,
-        left: liveInsets.left,
-      },
-      radius: liveInsets.radius,
-    });
+    setState(cropStateFor(selection.element));
   }
 
   const hasCrop =
@@ -120,17 +107,28 @@ export function DomEditCropHandles({
   committedRef.current = hasCrop ? buildInsetClipPathSides(state.insets, state.radius) : null;
 
   // Lift the clip while the element is selected so the full content shows and the
-  // cropped-away area can be dimmed; restore the committed crop on deselect. Keyed
-  // on the element so switching selections restores the previous one. Runs after
-  // render, so the state re-sync above still reads the element's real committed clip.
+  // cropped-away area can be dimmed; restore on deselect. Keyed on the element so
+  // switching selections restores the previous one. Runs after render, so the
+  // state re-sync above still reads the element's real committed clip. Restore
+  // prefers the pre-lift inline value VERBATIM — the rebuilt inset only replaces
+  // it after a crop gesture actually commits, so a mere select+deselect can
+  // never reformat (or drop) what the author wrote.
   const liftedRef = useRef(false);
+  const preLiftInlineClipRef = useRef("");
+  const cropCommittedRef = useRef(false);
   useEffect(() => {
     const el = selection.element;
+    if (readElementCropInsets(el) === null) return;
+    preLiftInlineClipRef.current = el.style.getPropertyValue("clip-path");
+    cropCommittedRef.current = false;
     el.style.setProperty("clip-path", "none");
     liftedRef.current = true;
     return () => {
       liftedRef.current = false;
-      if (committedRef.current) el.style.setProperty("clip-path", committedRef.current);
+      const restore = cropCommittedRef.current
+        ? committedRef.current
+        : preLiftInlineClipRef.current || null;
+      if (restore) el.style.setProperty("clip-path", restore);
       else el.style.removeProperty("clip-path");
     };
   }, [selection.element]);
@@ -198,7 +196,12 @@ export function DomEditCropHandles({
     };
     void Promise.resolve(
       onStyleCommit?.("clip-path", buildInsetClipPathSides(state.insets, state.radius)),
-    ).then(reLift, reLift);
+    ).then(() => {
+      // Only a landed commit makes the rebuilt inset the restore value; a
+      // failed one keeps restoring the pre-lift clip.
+      cropCommittedRef.current = true;
+      reLift();
+    }, reLift);
   };
 
   const cancelCropGesture = (event: ReactPointerEvent<HTMLElement>) => {
@@ -212,6 +215,10 @@ export function DomEditCropHandles({
     setState((prev) => ({ ...prev, insets: gesture.startInsets }));
   };
 
+  // Uneditable clip (circle/polygon/non-px inset): the element renders exactly
+  // as authored and the crop tool shows nothing. All hooks above stay mounted.
+  if (!state.croppable) return null;
+
   return (
     <>
       {/* Dim the cropped-away area whenever the element is cropped and selected,

packages/studio/src/components/editor/domEditOverlayCrop.test.ts

@@ -1,6 +1,8 @@
 import { describe, expect, it } from "vitest";
 import {
   cropRectFromInsets,
+  hugRectForElement,
+  readElementCropInsets,
   resolveCropInsetFromEdgeDrag,
   resolveCropInsetFromMoveDrag,
 } from "./domEditOverlayCrop";
@@ -104,3 +106,48 @@ describe("cropRectFromInsets", () => {
     expect(r.height).toBe(0);
   });
 });
+
+describe("readElementCropInsets tri-state", () => {
+  // Regression: a clip-path the crop tool can't represent (circle/polygon/
+  // non-px inset) used to parse to ZEROS — indistinguishable from "no crop" —
+  // so selecting lifted the clip and deselecting removed/replaced it: the
+  // authored circle clip was silently destroyed by a mere select+deselect.
+  const fakeEl = (inlineClip: string) =>
+    ({
+      style: { getPropertyValue: (p: string) => (p === "clip-path" ? inlineClip : "") },
+      ownerDocument: { defaultView: { getComputedStyle: () => ({ clipPath: "none" }) } },
+    }) as unknown as HTMLElement;
+
+  it("zeros for no clip", () => {
+    expect(readElementCropInsets(fakeEl(""))).toEqual({
+      top: 0,
+      right: 0,
+      bottom: 0,
+      left: 0,
+      radius: 0,
+    });
+  });
+
+  it("parses a px inset", () => {
+    expect(readElementCropInsets(fakeEl("inset(16px round 12px)"))).toEqual({
+      top: 16,
+      right: 16,
+      bottom: 16,
+      left: 16,
+      radius: 12,
+    });
+  });
+
+  it("null for a circle clip (uneditable, must not be lifted)", () => {
+    expect(readElementCropInsets(fakeEl("circle(50% at 50% 50%)"))).toBeNull();
+  });
+
+  it("null for a non-px inset (uneditable, must not be lifted)", () => {
+    expect(readElementCropInsets(fakeEl("inset(10%)"))).toBeNull();
+  });
+
+  it("hugRectForElement passes the rect through for uneditable clips", () => {
+    const rect = { left: 1, top: 2, width: 30, height: 40, editScaleX: 1, editScaleY: 1 };
+    expect(hugRectForElement(rect, fakeEl("circle(50%)"))).toEqual(rect);
+  });
+});

packages/studio/src/components/editor/domEditOverlayCrop.ts

@@ -28,15 +28,21 @@ export function cropRectFromInsets(
   };
 }
 
-/** Current inset crop of an element (inline first, computed fallback), or zeros. */
-export function readElementCropInsets(element: HTMLElement): ClipPathInsetSides & {
-  radius: number;
-} {
+/**
+ * Current inset crop of an element (inline first, computed fallback).
+ * Zeros = no clip (croppable, nothing cropped yet). `null` = the element
+ * carries a clip-path this tool cannot represent (circle/polygon/non-px
+ * inset) — croppers must not lift, edit, or restore it, or the clip gets
+ * silently replaced or destroyed on deselect.
+ */
+export function readElementCropInsets(
+  element: HTMLElement,
+): (ClipPathInsetSides & { radius: number }) | null {
   const inline = element.style.getPropertyValue("clip-path").trim();
   const value =
     inline || element.ownerDocument.defaultView?.getComputedStyle(element).clipPath.trim() || "";
-  const parsed = parseInsetClipPathSides(value === "none" ? "" : value);
-  return parsed ?? { top: 0, right: 0, bottom: 0, left: 0, radius: 0 };
+  if (!value || value === "none") return { top: 0, right: 0, bottom: 0, left: 0, radius: 0 };
+  return parseInsetClipPathSides(value);
 }
 
 export interface CropInsetDragInput {
@@ -111,6 +117,8 @@ export function hugRectForElement(
   element: HTMLElement,
 ): CropScreenRect {
   const insets = readElementCropInsets(element);
-  if (insets.top <= 0 && insets.right <= 0 && insets.bottom <= 0 && insets.left <= 0) return rect;
+  // Uneditable clip (null) can't be hugged — show the full element rect.
+  if (!insets || (insets.top <= 0 && insets.right <= 0 && insets.bottom <= 0 && insets.left <= 0))
+    return rect;
   return cropRectFromInsets(rect, insets, rect.editScaleX, rect.editScaleY);
 }