Tell the user when a teammate deletes the page holding their unsaved work - #215
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…keep held items in place Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Live sync cannot send work to a page the server no longer has, so the unsaved mark never cleared and the page swap waited forever: the canvas stayed on the deleted page with the sync button spinning, and switching pages dropped the work without a word. When the page on screen is gone and holds work the server never got, the session now stops and asks: restore the page (re-created with everything on screen, then synced from it) or discard the changes and move to a page that exists. With nothing unsent, the stale unsaved mark is cleared and the canvas moves on as before. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Review round 1: - Rejected work discarded before a restore completes the queue's adoption, so its replacement ops are not skipped. - The restore waits for its page add's ack behind other batches, and takes the page as its base only when it came back empty: a page a teammate restored first is never read as deletions here. - A page whose images this device cannot upload again is not restored. - Discard waits for ops already sent for the page, then withdraws what they left; while any remain, the choice stays open. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Review round 2 found restoring the page in place still loses or corrupts work: the purge of its rows runs after the page is gone, so restored ids can be refused while the page reads as saved; lineup screenshots were not re-uploaded; page metadata queued before the deletion was dropped. Each is a guess the client cannot verify, and AGENTS.md says to fail loudly rather than save something wrong. The dialog now tells the user their latest changes could not be saved, and the canvas moves on once they have read it. Keeping the work needs the server's help. Switching pages checks the page being left first, so the notice shows even when a switch comes before anything else asked. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Review round 3: - Leaving a page (a switch, or the replace a teammate's change waits on) checks for lost work itself, busy editor or not, and whatever the save flags say; only the automatic notice waits for a gesture to end. - The user's own delete of the page, still on its way, is not a teammate's deletion and says nothing. - A new queue operation, discardDeletedPage, drops every record of the page with its successor, so a paused edit with a successor no longer keeps the notice open for good. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Review round 4: - A switch checks the page it leaves again after flushing it, so a deletion that lands meanwhile still tells the user; the prepared page transition is unwound. - discardDeletedPage also drops work whose first save could not be verified, and recomputes the queue's error from what remains, so a dropped op's error no longer holds the canvas on the deleted page. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Review round 5: OK used to hand the swap to the reapply that waits for all pending cloud work, so another page's paused edit left the deleted page on screen, editable, with its protection gone. OK now loads the server's page itself, as a page switch would; work queued for other pages is not on this canvas and keeps waiting. The notice stays until the new page is on screen. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Review round 6: - Loading the page that replaces the deleted one keeps the map and theme on screen while a change to them is still on its way, as using the cloud version after a conflict already did (shared helper now). - OK reads the server again first, so a read that failed earlier does not fail every retry. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Review round 7: when selecting a page failed (say the page a teammate deleted moved the editor to one that would not load), no live read was left running, and a later refresh fetched the page without starting one: teammates' edits stopped arriving. A refresh that reads the selected page now starts its live read if none is running for it. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Included review availability: This review used your included allowance. Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe change detects unsent work on a remotely deleted page, keeps that page active while work remains, and prompts the user to leave it. Leaving withdraws page-specific queued work, waits for in-flight work, and loads another available page. ChangesDeleted page handling
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~45 minutes Change: Bug fix Sequence Diagram(s)sequenceDiagram
participant RemoteEditorSnapshotNotifier
participant StrategyPageSessionNotifier
participant StrategyOpQueueNotifier
participant CloudSyncButton
participant DeletedPageDialog
RemoteEditorSnapshotNotifier->>StrategyPageSessionNotifier: Updated snapshot omits active page
StrategyPageSessionNotifier->>StrategyOpQueueNotifier: Check page-scoped unsent work
StrategyPageSessionNotifier->>CloudSyncButton: Set deletedPage state
CloudSyncButton->>DeletedPageDialog: Show deleted-page notice
DeletedPageDialog->>StrategyPageSessionNotifier: Request leaveDeletedPage
StrategyPageSessionNotifier->>StrategyOpQueueNotifier: Withdraw page work and wait for in-flight work
StrategyPageSessionNotifier->>RemoteEditorSnapshotNotifier: Refresh snapshot and load replacement page
Merge Risk: ⚪ Minimal · up to The deleted-page notice and cleanup changes have no established merge-blocking issue. Merge after normal checks. Security Architecture ReviewSecurity architecture risk: 🟡 Moderate · up to The change protects unsaved page edits and does not appear to create a new access path. In an outbox-failure case, however, it can mark work as saved when a pending media upload cannot be verified. Retained concerns
Security review detailsSecurity Blast Radius
Trust Boundaries and Controls
Resilience and Maintainability Implications
Hardening Proposals
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
Review comments at @lib/providers/collab/remote_strategy_snapshot_provider.dart:
- Around line 101-112: Update _startPageSubscription to increment and capture
_pageEpoch before awaiting cancellation, then verify the epoch and active
strategy and page still match its arguments before installing the watcher;
return without subscribing if the request became stale.
Review comments at @lib/providers/strategy_save_state_provider.dart:
- Around line 163-182: Update clearStaleCloudMark to return without clearing the
dirty or cloud-sync state when state.hasPendingMediaSync is true. Preserve the
existing guards and clearing behavior when no media work is pending.
Review comments at @lib/widgets/cloud_sync_button.dart:
- Around line 163-174: Update the deletedPage listener in _CloudSyncButtonState
to handle a non-null value already present when CloudSyncButton mounts, as well
as later transitions, and show DeletedPageDialog after the frame when the widget
is still mounted.
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📒 Files selected for processing (11)
lib/providers/collab/active_page_live_sync_provider.dartlib/providers/collab/remote_strategy_snapshot_provider.dartlib/providers/collab/strategy_op_queue_provider.dartlib/providers/strategy_page_session_provider.dartlib/providers/strategy_save_state_provider.dartlib/widgets/cloud_sync_button.dartlib/widgets/dialogs/deleted_page_dialog.darttest/global_strategy_outbox_test.darttest/remote_editor_snapshot_provider_test.darttest/strategy_page_session_provider_test.darttest/widgets/cloud_sync_button_test.dart
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- A page's live read claims its turn before cancelling the old one, so two refreshes at once start one watcher, not two. - An image still uploading keeps the unsaved mark: it is not stale. - The sync button shows the deleted-page notice if it mounts while one is already waiting. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Addressed all three in 77c7a82: the page watcher claims its epoch before cancelling (two refreshes at once start one watcher, with a regression test), clearStaleCloudMark leaves the mark while media is pending, and the sync button shows a notice already waiting when it mounts. Each has a test that fails without its fix. @coderabbitai review |
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…emote-apply # Conflicts: # lib/interactive_map.dart
… paths Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Reusing unchanged items on a merge needed live sync to track what the canvas drew separately from what the server acked, and each attempt at that left another way to rewind a revision. Server-wins for every item the user isn't holding is the reviewed behaviour; its path rebuild cost matches the full reload it replaced. The three new tests still hold. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…ix-deleted-page-work
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SunkenInTime
changed the base branch from
incremental-remote-apply
to
icarus-cloud
September 28, 2026 16:43
…age-work # Conflicts: # lib/providers/strategy_page_session_provider.dart # test/strategy_page_session_provider_test.dart
A page op saved as in flight before the app closed is only waiting to be replayed after a restart; nothing is sending it. discardDeletedPage kept every in-flight record, so offline, OK could never clear the deleted page's work and the user stayed on a page that no longer exists. It now keeps a record only while this process is sending its strategy, the same rule the queue view uses. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Once the user's delete of the page on screen was accepted, it left the queue, so an earlier edit on the page still paused or refused made the page read as deleted by a teammate. The notice then asked them to throw away work to leave a page they deleted, and blocked the switch the delete planned. The session now remembers pages whose delete from this device the server accepted; the paused or refused edit stays in the sync status. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Leaving a deleted page drops its queued changes but left their image uploads, and the bytes they hold, retrying later. An image placed after the delete never got a change the server could take, so its staged upload waited for a reference forever. Leaving now marks the strategy's uploads for a check before their next attempt: one goes, with its bytes, only if no queued change and no page on the server references its image. Marks made offline wait for the connection. A check that cannot prove the image unreferenced lets the upload go on. Session tests now use a recording media queue: the real one had no storage there, and nothing in them exercised it. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The save state listens to the queue before the session does, so when the ack takes the delete out of the queue, the save state's change can run the deleted-page check before the session's queue listener records the page as deleted here. With the live read ahead of the ack and an earlier edit paused, the teammate notice still showed. The check now records the accepted deletes in the queue it reads. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The mark a discarded page's work leaves on its uploads lives in memory, so an app closed before the connection came back lost it and the upload went on. Every upload restored at launch with a durable reference now starts marked; staged ones already had their own check. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The check before an upload's attempt ran outside the upload's error handling, and dropped its mark first. When removing an unreferenced job failed, the error escaped the upload worker, stopping it, and the next attempt uploaded the discarded image. The mark now stays until the check settles, a failed removal waits for the usual retry, and the job never uploads in between. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
A job marked for a reference check was checked when the worker picked it. A removal that kept failing then left it first in line on every attempt, holding up the uploads behind it, and a staged job took the removal on a path that could throw out of retryNow. A marked job now never uploads: each retry first settles the checks it can (online, no upload running), a failed removal leaves the job marked and waiting, and every other job goes on. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
…at a time A reference check that could not tell (a failed server read) dropped the job's mark. A staged job has no other way out, so it then waited forever. The check now tells deleted, still referenced, and unknown apart: unknown keeps a staged job's mark and lets a job that can upload go on, as before. Two retries could each run the check on the same job; one that could not tell let it start uploading while the other deleted it. Checks now run one pass at a time, and every retry waits for the running pass before starting an upload. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Base
icarus-cloud(#208, which this was stacked on, is merged).Bug
In cloud mode, a teammate deletes the page you're on while you have work on it the server doesn't have yet (say, a stroke you finish after their delete lands). Live sync can't send ops for a page the server no longer has, so
syncLocalPageskips it. The save state stays dirty, and the page swap waits for it forever.What you saw before
You stay on the deleted page, and the sync button spins "Syncing…" for good. No toast, nothing on screen says the work can't be saved. If you then switch pages, the work is dropped silently.
Now
A notice that can't be dismissed says the page was deleted and your latest changes to it couldn't be saved. OK moves you to a page that exists. If the deleted page had nothing unsent, you move on without a notice, as before.
Fix
ActivePageLiveSyncNotifier.hasUnsentWorkcompares the canvas with what it was drawn from (or what the server accepted), and checks the queue for ops on the page.leaveDeletedPage) drops the page's queued work, including successors and work whose first save couldn't be verified (newStrategyOpQueueNotifier.discardDeletedPage). It waits for ops already in flight, then loads the next page itself. Other pages' queued work and an unsent map/theme change stay. If anything is left or the load fails, the notice stays with an error.clearStaleCloudMark), so the spinner stops.Why not restore the page?
I built "Restore page" first. Review showed it can't be done honestly on this server. A deleted page's rows are purged later, so re-adding the same ids can be refused while the page reads as saved. Its images and lineup screenshots may already be reclaimed. Page metadata queued before the delete gets lost. Keeping the work needs the server's help, a restore mutation or soft-deleted pages. That's a call for Dara, left out of this PR.
Tests
test/strategy_page_session_provider_test.dart: Apply teammates' changes item by item instead of reloading the page #208's "teammate deleting the page on screen waits for the stroke" test asserted the stuck state; it now asserts the notice. Also covered: a switch before the notice shows (editor busy), a delete that lands during a switch's flush, an unrelated op clearing the dirty mark, your own delete, nothing unsent, OK with ops in flight (settle / never settle), OK while another page's work waits, keeping an unsent map change, OK after a failed read.test/global_strategy_outbox_test.dart(real queue):discardDeletedPagedrops paused records with successors and attention records, keeps other pages' work, recomputes the error, and drops unverified first writes.test/remote_editor_snapshot_provider_test.dart(real notifier): a refresh after a failed page selection starts the live read again.test/widgets/cloud_sync_button_test.dart: the notice shows, can't be dismissed, and stays with an error when leaving fails.flutter test --no-pub: 1253 passed, 5 skipped (the usual), none failing.Unverified
No live two-client session. This Windows machine can't build the native app. The screenshots come from a widget test rendering the real
CloudSyncButtonand dialog in the app theme.After review (Greptile)
flutter test --no-pubafter merging the latesticarus-cloud: 1306 passed, 5 skipped.Follow-ups (not in this PR)
Keeping the work: needs server support (see above). Dara's call.
Pre-existing, from review: a slow
_refreshFromServercan briefly overwrite a newer page selection's snapshot, since there's no generation check.On a legacy page, load-time normalization (e.g. text sizes) counts as unsent work. So the notice can appear even though you didn't edit, but only when a teammate deletes the page while other sync work is pending.
From review: reference checks after a restart read the server one upload at a time; many restored uploads whose reads all time out can hold up other uploads for a while.
Pre-existing: a failed removal of a restored staged upload throws out of
retryNow.Server
Client-only. No Convex changes, so production data needs no migration.
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Summary by CodeRabbit
No outstanding findings block merging.
Summary
This PR helps users leave a page deleted by a teammate when it still has unsaved work. The current changes address the previously reported issues with interrupted writes, pending image uploads, and deletions made on this device.
Reviews (2) · Last reviewed commit: "Merge remote-tracking branch 'origin/ica..."