fix(studio): a dust spot is a place on the photo, so a quarter turn carries it with the frame

docker/frontend/src/App.tsx

@@ -63,6 +63,7 @@ import {
 import { grainPerInch, grainStockFor } from '../shared/utils/grainShader';
 import { curveIsActive } from '../shared/utils/toneCurve';
 import { HEAL_DEFAULT_R } from '../shared/utils/heal';
+import { layMarks, type Orientation } from '../shared/utils/orientation';
 import { MOSAIC_DEFAULT_R } from '../shared/utils/mosaic';
 import { MASK_DEFAULT_FEATHER, MASK_EXPOSURE_MAX } from '../shared/utils/gradientMask';
 import { readHistogram, autoExposureStops, autoTone, autoWhiteBalance } from './ui/Histogram';
@@ -1498,6 +1499,22 @@ export function Workspace() {
     [remember, setAdjustment]
   );
 
+  // The ROTATE strip and the two mirrors are the only things that move the photo
+  // under the marks already on it, and a mark is a place on the photo, not a
+  // place on the screen: turn the frame and every spot the dust brush laid down
+  // has to turn with it, or the repair slides off its mote and the mote is
+  // uncovered again (shared/utils/orientation.ts). One undo step, like the turn
+  // itself — UNDO hands back the frame AND the marks of the frame before it.
+  const carryMarks = useCallback(
+    (next: Orientation) => {
+      setRecipe((prev) => ({
+        ...prev,
+        adjustments: layMarks(prev.adjustments, { rot: rotation, flipH, flipV }, next, photoDims),
+      }));
+    },
+    [rotation, flipH, flipV, photoDims]
+  );
+
   // FX's HEAL brush writes the spots the same way a knob writes its value: one
   // gesture is one undo step whatever it laid down, so UNDO takes the dust back
   // out a stroke at a time, and CLEAR — one step — hands the whole photo back.
@@ -2851,9 +2868,12 @@ export function Workspace() {
       ],
       onPick: (v) => {
         remember();
-        setRotation(v === 'reset' ? 0 : (Number(v) as 0 | 90 | 180 | 270));
+        const next = v === 'reset' ? 0 : (Number(v) as 0 | 90 | 180 | 270);
         // RESET levels the whole frame, angle and mirrors included.
-        if (v === 'reset') {
+        const level = v === 'reset';
+        carryMarks({ rot: next, flipH: level ? false : flipH, flipV: level ? false : flipV });
+        setRotation(next);
+        if (level) {
           setStraighten(0);
           setFlipH(false);
           setFlipV(false);
@@ -3759,6 +3779,7 @@ export function Workspace() {
             active: flipH,
             onClick: () => {
               remember();
+              carryMarks({ rot: rotation, flipH: !flipH, flipV });
               setFlipH((v) => !v);
             },
           },
@@ -3768,6 +3789,7 @@ export function Workspace() {
             active: flipV,
             onClick: () => {
               remember();
+              carryMarks({ rot: rotation, flipH, flipV: !flipV });
               setFlipV((v) => !v);
             },
           },