🐛 Keep update-main and deferred text sync in one undo group

Use the same explicit group for inverse sync and every copy sync. Text
reflow can finish after the update transaction closes; one undo must still
restore the main, its copies and the source overrides together (F152).

The five-operation text regression fails before this change. All 12
frontend generated replays pass: 865 assertions. Common and frontend lint
and format pass. Shared benchmark ratios: mains 0.47/0.53/0.55; levels
0.51; chain 0.64; library 0.64; many shapes 0.96; switch 0.68, no flags.

AI-assisted-by: GPT-6

.serena/memories/frontend/workspace-state-persistence-subtleties.md

@@ -51,6 +51,9 @@
 - `leave-signals` (document `visibilitychange`→hidden, window `blur`) emits `::force-persist` when edits are buffered, so leaving the tab/window sends the 3 s batch at once; tests mock `dps/leave-signals` BEFORE `initialize-persistence` runs. pagehide/beforeunload are too late for an async save.
 - Exports and the `.penpot` download call `force-persist-files-and-wait file-ids timeout` (waits only for those files, ends on `:error` or timeout, never raises) and then `unsaved-changes? state file-ids` to warn; it reads `refs/persistence`, so tests mock it with `(l/derived :persistence store)`.
 - `persistence-failed` emits a `save-failed` audit event (`:cause-type :code :retrying :queued-commits`) whenever the user is notified (`notify-failure?`, same rule as the toast), including delegated auth/not-found failures.
+- Updating a component main passes one explicit undo group through the
+  inverse sync and all copy syncs. Deferred text reflow may commit after
+  the transaction closes; its changes must still join the user action (F152).
 - Undo transactions can stay open only temporarily; timed-out pending transactions are force-committed after about 20s. Undo entries are capped at 50.
 - Undo/redo are ignored while a normal editor/drawing interaction is active, except grid-layout edition handles undo through this path.
 - After local commits and when render-wasm is active, text shapes get derived `:position-data` recomputed in a separate commit tagged `#{:position-data}`; that tag is excluded from the position-data watcher to avoid loops.

frontend/src/app/main/data/workspace/libraries.cljs

@@ -845,7 +845,7 @@
   NOTE: It's possible that the component to update is defined in an
   external library file, so this function may cause to modify a file
   different of that the one we are currently editing."
-  [id]
+  [id & {:keys [undo-group]}]
   (dm/assert! (uuid? id))
   (ptk/reify ::update-component
     ptk/WatchEvent
@@ -863,6 +863,7 @@
         (when (ctk/instance-head? shape)
           (let [[local-changes nonlocal-changes]
                 (-> (pcb/empty-changes it)
+                    (cond-> undo-group (pcb/set-undo-group undo-group))
                     (pcb/with-container container)
                     (cll/generate-sync-shape-inverse libraries container id)
                     (cll/split-local-changes))]
@@ -922,17 +923,18 @@
       (let [page         (dsh/lookup-page state)
             shape        (ctn/get-shape page shape-id)
             component-id (:component-id shape)
-            undo-id      (js/Symbol)]
+            undo-id      (js/Symbol)
+            undo-group   (uuid/next)]
         (apply rx/of
                (concat
                 [(dwu/start-undo-transaction undo-id)
-                 (update-component shape-id)
+                 (update-component shape-id :undo-group undo-group)
 
                  ;; These calls are necessary for properly sync thumbnails
                  ;; when a main component does not live in the same page.
                  (update-component-thumbnail-sync state component-id file-id "frame")
                  (update-component-thumbnail-sync state component-id file-id "component")]
-                (component-sync-events state component-id file-id nil)
+                (component-sync-events state component-id file-id undo-group)
                 [(dwu/commit-undo-transaction undo-id)]))))))
 
 (defn update-component-thumbnail

frontend/test/frontend_tests/composable_tests/generated_test.cljs

@@ -89,3 +89,8 @@
 
 (t/deftest ^:async nesting-restores-default-constraints-on-undo
   (await (replay {:world [2 0] :ops [[:nest 0]]})))
+
+(t/deftest ^:async update-main-after-nesting-a-rotated-text-copy-undoes-together
+  (await (replay {:world [2 0 {:text true}]
+                  :ops [[:duplicate 0] [:nest 0] [:rotate 0 0 0]
+                        [:edit 0 0 1 1] [:update-main 0]]})))