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cmux175: #12537 cloud startup latency - #12573
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Included review availability: Your plan provides up to 10 included reviews per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe PR makes Cloud terminal creation request-aware. It adds durable retry resolution, centralized pending and failure state, layout creation, cancellation handling, presentation updates, startup guards, and regression tests. ChangesCloud terminal creation
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~60 minutes Change: Bug fix Sequence Diagram(s)sequenceDiagram
participant Workspace
participant CloudPaneCreationFailureStore
participant CloudTerminalCreationCoordinator
participant CmuxTuiSurfaceProvider
participant CloudTuiDaemon
Workspace->>CloudPaneCreationFailureStore: run creation request
CloudPaneCreationFailureStore->>CloudTerminalCreationCoordinator: start request
CloudTerminalCreationCoordinator->>CmuxTuiSurfaceProvider: create terminal with request
CmuxTuiSurfaceProvider->>CloudTuiDaemon: run command with idempotency key
CloudTuiDaemon-->>CmuxTuiSurfaceProvider: return creation result or error
CmuxTuiSurfaceProvider-->>CloudTerminalCreationCoordinator: return terminal or failure
CloudTerminalCreationCoordinator-->>CloudPaneCreationFailureStore: update phase
CloudPaneCreationFailureStore-->>Workspace: show progress, retry, or failure
Merge Risk: 🔵 Low · up to A valid Cloud terminal that exceeds the handshake window can disconnect and retry before attaching, adding startup latency. Automatic recovery limits the impact, but this remaining risk should be tracked before merge. Important Pre-merge checks failedPlease resolve all errors before merging. Addressing warnings is optional. ❌ Failed checks (4 errors, 1 warning)
✅ Passed checks (20 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 40.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 90 functions across 41 files. (1 skipped: 1 unsupported.) Full details: Cmux Swift Actor IsolationExplanation The PR adds Resolution Keep teardown cancellation on the MainActor. Mark Full details: Cmux Swift `@Concurrent`Explanation The new Resolution Keep request state transitions on Full details: Cmux Swift Package BoundariesExplanation The PR adds core Cloud terminal creation logic to the app target without a SwiftPM boundary. Resolution Create a small Full details: Cmux Full InternationalizationExplanation The new Swift UI uses localized APIs, but the edited catalog entries are incomplete. Resolution Add translated entries for the 11 missing locales to the three changed catalog keys. Also verify the newly displayed
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Actionable comments posted: 2
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Inline comments:
In `@cmuxTests/CloudTerminalStartupLatencyTests.swift`:
- Line 61: Update the test around reconnect(socketPath:) to remove the fixed 200
ms timeout and real-time wait; use a synchronous command recorder or an explicit
completion signal to verify no attach command is emitted when remoteSurfaceID is
0.
In `@Sources/Cloud/CloudTuiManualMirrorSession`+StartupReadiness.swift:
- Line 18: Move the armStartupDeadline() call from bind to
updateStartupAttachment(), so the deadline starts only after attachment
acknowledgement. Update armStartupDeadline() to require phase == .attached
before scheduling the timeout, while preserving the existing startup behavior
otherwise.
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Sources/Cloud/CloudManualMirrorPresentation.swiftSources/Cloud/CloudTerminalStartupReadiness.swiftSources/Cloud/CloudTuiManualMirrorDeadlines.swiftSources/Cloud/CloudTuiManualMirrorSession+Protocol.swiftSources/Cloud/CloudTuiManualMirrorSession+StartupReadiness.swiftSources/Cloud/CloudTuiManualMirrorSession.swiftSources/Surfaces/CmuxTuiSurfaceProvider+AttachmentRecovery.swiftSources/Surfaces/CmuxTuiSurfaceProvider+ManualMirror.swiftSources/Surfaces/CmuxTuiSurfaceProvider+ManualMirrorStartup.swiftSources/Surfaces/CmuxTuiSurfaceProvider+RefreshScheduling.swiftSources/Surfaces/CmuxTuiSurfaceProviders.swiftcmux.xcodeproj/project.pbxprojcmuxTests/CloudManualMirrorPresentationTests.swiftcmuxTests/CloudTerminalStartupLatencyTests.swift
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Reviewed the package-boundary suggestion. The two inline CodeRabbit findings are now answered and resolved: the fixed-duration negative wait was removed, and the obsolete startup deadline/gate no longer exists. The canonical HQ autoreview passed on 342fd7e with no actionable findings; the final test-only wait removal is being rechecked on current HEAD. Full runtime/video and median/tail evidence remain explicitly pending. |
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Inline comments:
In `@Sources/Surfaces/SurfaceProvider.swift`:
- Line 68: Make the request-aware createTerminal contract required by removing
its protocol default implementations. Add explicit request-aware implementations
or rejection behavior for LocalSurfaceProvider and every other non-Cloud
conformer, while preserving CmuxTuiSurfaceProvider’s request receipt and
idempotency handling and local behavior.
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Sources/Cloud/CloudTerminalCreationRequest.swiftSources/Cloud/CloudTerminalCreationRetryResolution.swiftSources/Cloud/CloudTreeGroupRowContent.swiftSources/Cloud/CloudTreeRowContentView.swiftSources/Cloud/CloudTuiCommandLine.swiftSources/Surfaces/CloudPaneCreationFailureStore.swiftSources/Surfaces/CloudPaneCreationPhase.swiftSources/Surfaces/CloudTerminalLayoutCreation.swiftSources/Surfaces/CloudTerminalLayoutCreationResult.swiftSources/Surfaces/CmuxTuiSurfaceProvider+LayoutCreation.swiftSources/Surfaces/CmuxTuiSurfaceProvider+TerminalCreation.swiftSources/Surfaces/SurfaceLayoutTerminalCreating.swiftSources/Surfaces/SurfaceProvider.swiftSources/Surfaces/Workspace+CloudTerminalCreation.swiftcmux.xcodeproj/project.pbxprojcmuxTests/CloudPaneCreationRetryTests.swiftcmuxTests/CloudTerminalCreationRequestTests.swiftcmuxTests/SurfacePaneFactoryFocusTests.swift
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Consume the existing fixture correction from f2373f2 after the hosted test target reported the NSPoint/NSRect mismatch.
Consume the existing fixture corrections from 3fd8012. The provider schedules resolution retries; an idle session has no reconnect card until an unavailable state is established.
Consume the inline placement-failure and displayed-failure identity design from cmux114 commit b607869, adapted to the existing request coordinator. A production-source harness reproduces stale Retry affecting a newer request before the guard and leaving it untouched after.
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Refs #12537. A native Cloud pane showed the reconnecting card on the first connecting sample and switched to "Cloud session unavailable" on a disconnect that automatic recovery repaired a moment later. Both tests use the session's public API at production grace and fail on the current code. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Refs #12537. The reconnect card flashed on every healthy handoff and announced "unavailable" for disconnects that automatic recovery repaired within a second: every provider refresh re-ran reconnect, and each fence went disconnected then connecting with no grace anywhere. The session now runs one presentation episode per unusable stretch: silent inside a grace, progress after it while recovery is automatic, Reconnect only once recovery has kept failing, and cleared the moment the attachment is usable. A first attach says connecting; a pane that already showed content says reconnecting. An explicit Reconnect shows progress at once. Cloud terminal creation no longer shows a separate "Starting Cloud terminal" pane or toast. Every entrypoint (Cmd+D, Cmd+Shift+D, Cmd+T, the divider split button, the sidebar New Terminal) reserves the real pane at the requested spot immediately, creates the terminal behind it, and adopts the pane when the attachment resolves. Input typed before adoption is relayed to the terminal. A failure is shown inside the pane with Retry on the same request id; closing the pane cancels only that request. Adds the nine-locale overlay strings the cards use and removes the dead pending-panel keys. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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The disconnected, suspended, and error card strings had no catalog entries and rendered their English defaults in every locale; they now carry all nine macOS locales. The six cloudTerminal.creation.* keys belonged to the removed pending panel and are gone. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
b89ff0d Merge commit from fork 48e151d Merge pull request manaflow-ai#12637 from manaflow-ai/issue-12615-cloud-feature-flag add0a4b Merge origin/main into issue-12615-cloud-feature-flag 4cbaed7 Merge pull request manaflow-ai#12573 from manaflow-ai/issue-12537-cloud-startup-latency 0f57bf7 fix(cloud): clear stale link errors after recovery 1ea9b6c Exercise the Cloud gate with the standalone CLI 1a2496f l10n(cloud): localize the reconnect card and drop pending-panel keys f28b3b2 fix(cloud): keep terminal recovery and creation indicators silent 373a53a Merge origin/main and remove transient Cloud loading overlays 5fa0ec7 fix(cloud): suppress transient terminal loading cards 6ec00b3 Import the managed Cloud policy dependency 1eb79da Inject the remote decision into live Cloud policy fixtures 99ef8e8 Gate macOS Cloud with a reversible remote runtime flag f3925e7 test: cover Cloud remote flag and cancelled restore replacement 2d770ec test: retain lifecycle coverage with an authenticated relay fixture 17f0409 test: classify retired relay TTY report denial f3ea930 test: accept connection revocation for relay TTY reports 885db29 fix(cloud): grace the connection card and reserve panes optimistically d127054 test(cloud): reject the connection card flash and false unavailable b8f4927 test: keep connection fixture setup scoped to relay tests a411d84 docs: document relay connection revocation and closed schemas d5c88eb test: verify relay worker revocation and filtered panel listings 8432540 fix: close relay schemas and bind dispatch to the live connection 7eb5926 test: expose open relay parameters and stale connection dispatch b44d58d test: cover relay selector and ownership regressions a0f0ba7 fix(cloud): ignore session envelope churn in rename refresh 7dafd1a test(cloud): exercise repeated reconnect and visibility cycles 6cc99bc test: import split direction in the shortcut regression a686548 fix: import split direction dependency 1dda34b fix: preserve asynchronous Cloud split acceptance 539cefa test(cloud): reject duplicate fallback for an accepted split action 0fc1e88 Merge remote-tracking branch 'origin/main' into ghsa-merge-prep-20260913 c74835b Merge main's Cloud test fixture repairs 61af63f fix(cloud): keep placement failures inline and bind Retry to its card a95b3a5 test(cloud): align fixtures with the post-revert retry owner 475bae8 test(build): use the NSWindow rectangle conversion in drag fixture 6ab2c8d Merge current main compile repairs and preserve Cloud ownership f856e55 Merge remote-tracking branch 'upstream/main' into GHSA-9vmv-3hjw-j28c-relay-authorization 48dacae test(build): avoid the NSWindow keyWindow property in drag fixture ff78182 fix(build): move replay guard lookup out of the private extension 95a1c36 fix(build): expose web view ownership to the extracted replay guard 8356a69 test(cloud): assert unresolved attachment refusal synchronously be62f45 test: provide authoritative ownership evidence for remote restore fixtures 342fd7e fix(build): separate cloud port help visibility from its callback 7f529ea fix(build): make cloud leaf row inference explicit 655e930 fix(cloud): resolve explicit creation retries from daemon receipts bd75fb1 fix(cloud): retain active retries until their lifecycle ends 8dd76bd test(cloud): retain cancellation ownership across retry and new intent 381ba15 refactor(cloud): keep terminal request values in dedicated files 8a343a2 test: reject reporter selector decoys over the authenticated relay 0e0d51d fix(cloud): preserve terminal intents through inline retry 9c2e393 docs: describe the current private relay authorization contract 20c9fb0 fix: reject relay selector decoys and preserve socket cancellation b3909bb test(cloud): preserve known terminal creation failure causes 750b97f fix(cloud): keep one active creation attempt per intent af9a79d test(cloud): reproduce duplicate creation during an in-flight retry 77a80a8 fix(cloud): isolate terminal creation from provider refresh latency 7be826e fix(cloud): refuse unresolved manual attachment IDs 45f9b0c Merge renderer health owner and retire parallel startup gate 4802f86 test: cover GHSA selector decoys and relay teardown regression bc1e148 fix(cloud): rearm startup deadline after reconnect reset bb25cfd fix(cloud): satisfy session file budget d90d40d fix(cloud): keep teardown cleanup within file budget 4a42807 fix(cloud): release startup observers on session teardown b186d4f fix(cloud): document startup observer isolation 97897d0 fix(cloud): fence readiness across pane reveals ed7a347 fix(cloud): allow readiness deadline to report failure 54d5dec fix(cloud): preserve provider recovery wiring 9cb904c fix(cloud): finish startup presentation safeguards 36e7091 fix(cloud): make manual mirror startup readiness event driven 2d038f7 test(cloud): reject unresolved startup attaches 1160a81 Fix cloud workspace action destination defaults 771b941 Merge remote-tracking branch 'upstream/main' into GHSA-9vmv-3hjw-j28c-relay-authorization 438df81 Fix relay metadata probe forwarding and tests c4b0205 Harden relay authorization and session bounds c8827b6 Merge remote-tracking branch 'upstream/main' into GHSA-9vmv-3hjw-j28c-relay-authorization 0cc13aa Merge remote-tracking branch 'upstream/main' into GHSA-9vmv-3hjw-j28c-relay-authorization b455514 Guardrails for future v2 method authors (GHSA-9vmv-3hjw-j28c) 67d4dbd Authorize remote CLI relay commands (GHSA-9vmv-3hjw-j28c) 3211240 Add failing regression tests for remote CLI relay authorization (GHSA-9vmv-3hjw-j28c)
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Summary
Refs #12537. This branch owns Cloud terminal creation latency, the connection card, optimistic pane creation, and the relaunch/open paths of Cloud panes. Renderer/first-frame work stays coordinated with #12478 and #12587.
No loading surfaces; optimistic panes and one actionable card
Workspace+CloudTerminalReservation), create the terminal behind it, and adopt the pane when the attachment resolves (SurfaceCatalog.project(…, adopting:)→CmuxTuiSurfaceProvider.materialize(…, adopting:)). Keystrokes typed before adoption are relayed to the terminal. Nothing is shown while it waits: no card, no placeholder text, no tab spinner.reconnect, and every fence went.disconnectedthen.connecting; the card reacted to each sample.CloudTerminalConnectionPresentationPolicyshows no progress card at all: a connecting or reconnecting pane keeps its last frame and fills in when usable. The only card is Reconnect, after 8 s of continuously failing automatic recovery (or at once when recovery was given up), cleared the moment the attachment is usable. The legacy managed-workspace path is silent while connecting as well.reprojectRestoredPanesnow swaps every placeholder synchronously for a reserved native pane in the same Bonsplit pane, so the whole layout is in place before any round trip, and each pane attaches in parallel throughattachReservedTerminalPane: a retry loop on the background backoff (1, 2, 4, 8, 15, 30 s) that keeps going while the link comes up. Reconnect appears only after four failed rounds and restarts the loop at once; closing the pane cancels it; an exited terminal closes its pane.LayoutProjectionWalkandprojectGroupreserve every pane of the machine layout synchronously (same tree order as before, divider ratios applied immediately), record their projections up front so the bound-workspace coordinator never projects a duplicate, and attach all of them in parallel. The sidebar and nested-terminal navigation use the optimistic host; socket callers keep the awaited host sosurface_ids stay authoritative.retryablefor panes whose byte stream was healthy, and those were fenced and torn down.CloudAttachmentReconcileDecisionkeeps attached streams onretryable/noPlacement; a dead stream still reports itself.Earlier slices on this branch (unchanged): one authoritative placement snapshot per create with a revision fence, one active attempt per intent with receipt-based retry, typed failure causes.
Not in this PR: the machine-provisioning "Opening Base" pane (
CloudVMLoadingPanel) is a separate flow, and the root cause of the link transport closing mid-request needs daemon-side evidence (see the dogfood notes in the thread).Testing
CloudTerminalCardFlashRegressionTestsfails on the previous code at production grace: a card on the first connecting sample, and "unavailable" during automatic recovery. The fix commit makes it pass.CloudTerminalConnectionPresentationPolicyTests: policy table (nothing while connecting or attaching, Reconnect only after the grace or when recovery stopped), first attach never shows a card, a surface-id refresh bounce shows nothing (three cycles), persistent failure offers Reconnect and a usable attachment clears it.CloudAttachmentReconcileDecisionTests: attached streams survive lookups that cannot answer; unattached ones are fenced and retried; authoritative answers apply to every phase.SurfaceCatalogTests: opening a workspace optimistically reserves the whole layout (order and focus asserted) before any attach and records every projection; groups with unknown resources fall back to the awaited path.CloudTerminalPaneReservationTests: input relay ordering/bounds/discard, store inline failure + retry by request id, cancelling one request leaves another running.CloudManualMirrorPresentationTests,CloudTerminalCreationCoordinatorTests,WorkspaceRemoteReconnectPolicyTests.cloudTerminal.creation.*keys were removed.python3 scripts/localization_catalog.py checkandscripts/lint-xcstrings.pypass. Sidebar labels are unchanged.Checklist
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