fix(studio): keyframe bug fixes — gate delete hooks, fix value corruption, gesture recording (#1314)

- Gate stripStudioEditsFromTarget/bakeVisibilityOnDelete behind a
  stripStudioEdits flag on the delete mutation type so they only fire on
  user-initiated deletes, not on internal delete-then-recreate drags.

- Add bakeVisibilityOnDelete to the remove-all-keyframes handler so
  elements with CSS opacity:0 stay visible after collapsing keyframes.

- Fix integer rounding in readAllAnimatedProperties: use 3-decimal
  precision for visual properties (opacity, scale, rotation) instead of
  Math.round which corrupted mid-fade values to 0.

- Guard VISUAL_BASELINE against cross-tween contamination by querying
  __timelines for properties animated by other tweens on the same element.

- Harden bakeVisibilityOnDelete: reverse-scan keyframes for the last one
  containing opacity, guard against relative values (+=/-=/*=), and add
  Number.isFinite check.

- Fix falsy-zero doubling in drag commit: replace || fallback with
  Number.isFinite so a base GSAP position of 0 is correctly preserved.

- Fix gesture recording sign inversion: remove pointerElementOffset
  subtraction from dx/dy formula and instead apply it once to basePosition
  so the element center tracks the pointer.

- Fix TypeScript build errors in gsapSoftReload.ts (6 double-casts).

- Strip all diagnostic logs from production code.

packages/studio/src/utils/gsapSoftReload.ts

@@ -61,7 +61,24 @@ export function applySoftReload(iframe: HTMLIFrameElement | null, scriptText: st
     if (timelines) {
       for (const key of Object.keys(timelines)) {
         try {
-          timelines[key]?.kill?.();
+          const tl = timelines[key] as {
+            kill?: () => void;
+            getChildren?: (deep: boolean) => Array<{ targets?: () => Element[] }>;
+          };
+          const allTargets: Element[] = [];
+          if (tl?.getChildren) {
+            try {
+              for (const child of tl.getChildren(true)) {
+                if (typeof child.targets === "function") {
+                  for (const t of child.targets()) {
+                    allTargets.push(t);
+                    delete (t as unknown as Record<string, unknown>)._gsap;
+                  }
+                }
+              }
+            } catch {}
+          }
+          tl?.kill?.();
         } catch {}
         delete timelines[key];
       }