fix(core): split-into-property-groups and replace-with-keyframes mutations (#1355)

* fix(core): per-property-group keyframe foundations

Add PropertyGroupName type system (position/scale/size/rotation/visual/other),
PROPERTY_GROUPS constant, classifyPropertyGroup/classifyTweenPropertyGroup
functions. Parser generates group-aware animation IDs, resolves position strings
(+=, -=, <, >), uses numeric matching with 2% tolerance, and preserves IDs
across all mutations.

* fix(core): add split-into-property-groups and replace-with-keyframes mutations

Server-side mutations for atomic property-group splitting and keyframe
replacement. Client commitMutation returns early on changed:false instead
of throwing.

packages/studio/src/hooks/useGsapScriptCommits.ts

@@ -51,6 +51,7 @@ function ensureElementAddressable(selection: DomEditSelection): {
 
 interface MutationResult {
   ok: boolean;
+  changed?: boolean;
   parsed?: ParsedGsap;
   before?: string;
   after?: string;
@@ -131,9 +132,16 @@ export function useGsapScriptCommits({
       const pid = projectIdRef.current;
       if (!pid) return;
       const targetPath = selection.sourceFile || activeCompPath || "index.html";
-
       const result = await mutateGsapScript(pid, targetPath, mutation);
-      if (!result?.ok) return;
+      if (!result) {
+        if (options.skipReload) return;
+        throw new Error(`Mutation failed: ${mutation.type}`);
+      }
+
+      if (result.changed === false) {
+        if (options.skipReload) return;
+        return;
+      }
 
       domEditSaveTimestampRef.current = Date.now();