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Keep Cloud surfaces from several teams open and revoke removed members at once - #15869
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Stack team_membership.deleted now detaches every tunnel of that user from the team network and drops their identity snapshot, so open terminals and browsers lose the route at once instead of after the 10 minute cron. Tunnel enrollment reconciles against the complete, fresh team list and never detaches when that list is incomplete, so a Mac keeps every team network it belongs to. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Each Cloud provider, workspace binding and browser panel records its owning team, and every VM request for a live surface sends that team instead of the active one. A team switch now only rescopes the sidebar and new machines; open terminals and browsers of other teams stay connected, including after restore. A 404 vm_not_found, 403 or vm_owner_mismatch is permanent: the pane shows that access was lost instead of freezing on its last frame. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Included review availability: This review used your included allowance. Your plan provides up to 10 included reviews per hour; 4 remain after this review. 📝 WalkthroughWalkthroughCloud requests now support explicit machine-owner teams. Desktop surfaces retain ownership across same-account team changes and session restoration, and show access-loss states. Server tunnel routes use fresh membership when available, while Stack webhooks can trigger member or team access revocation. ChangesDesktop Cloud surfaces
Server team access
Priority: ⬆️ High Estimated code review effort: 4 (Complex) | ~60 minutes Sequence Diagram(s)sequenceDiagram
participant CloudTeamScopeObserver
participant CmuxTuiSurfaceProviderRegistry
participant VMClient
participant CmuxTuiSurfaceProvider
CloudTeamScopeObserver->>CmuxTuiSurfaceProviderRegistry: teamScopeDidChange()
CmuxTuiSurfaceProviderRegistry->>VMClient: status(machineID, ownerTeamID)
VMClient->>CmuxTuiSurfaceProviderRegistry: machine status
CmuxTuiSurfaceProviderRegistry->>CmuxTuiSurfaceProvider: refresh retained foreign machine
sequenceDiagram
participant Stack
participant StackWebhookRoute
participant handleStackWebhook
participant revokeTeamMemberAccess
participant revokeTeamNetworkAccess
Stack->>StackWebhookRoute: signed deletion event
StackWebhookRoute->>handleStackWebhook: request and revocation dependencies
handleStackWebhook->>revokeTeamMemberAccess: membership deletion
revokeTeamMemberAccess->>revokeTeamNetworkAccess: revoke member tunnels
revokeTeamNetworkAccess->>handleStackWebhook: revocation result
handleStackWebhook->>StackWebhookRoute: HTTP response
Suggested reviewers: Architecture SummaryArchitecture risk: 🔵 Low · up to The change affects 5 systems. Changed systems: Architecture concerns Review detailsSystems and components
Before / after behavior
Important Pre-merge checks failedPlease resolve all errors before merging. Addressing warnings is optional. ❌ Failed checks (5 errors, 1 warning)
✅ Passed checks (19 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 48.89% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 135 functions across 49 files. (2 skipped: 2 unsupported.) Full details: Cmux Cache Substitution CorrectnessExplanation The new Swift snapshot paths persist an opportunistic owner-team cache without cold or stale handling. Resolution Do not use the registry cache as the primary source while writing snapshots. Persist the current binding/provider ownership only when it has a current authoritative observation. Otherwise perform a fresh team-scoped read before saving, or defer the ownership field until that read completes. Add explicit cold-cache handling and freshness/version checks or event-driven invalidation for provider ownership. Clear an adopted owner when a restore supplies no owner, and prevent an older restored entry from overriding a newer binding or panel value. Add tests for a cold registry, a stale adopted owner, and a legacy snapshot restored after a different snapshot for the same machine ID. Full details: Cmux Algorithmic ComplexityExplanation The PR adds an unbounded sort in a recurring Cloud refresh path. Resolution Remove Full details: Cmux Swift ConcurrencyExplanation The diff adds an unstructured fire-and-forget task in Resolution Store the owner-team refresh task in a registry property such as Full details: Cmux Full InternationalizationExplanation The new Swift user-facing Cloud overlay strings use Full details: Cmux Architecture RethinkExplanation The Swift diff introduces a second mutable owner for Cloud machine ownership in Resolution Make one runtime model the source of truth for pending and registered machine ownership. Store restored ownership in the registry's typed machine/catalog state rather than a parallel ✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
Review comments at @Sources/Cloud/CloudTuiManualMirrorStopReason.swift:
- Around line 1-57: Add the missing translations for
cloud.overlay.accessLost.title, cloud.overlay.accessLost.detail,
cloud.overlay.signedOut.title, and cloud.overlay.signedOut.detail in the
localization catalog. Provide entries for bs, da, it, km, nb, pl, pt-BR, ru, th,
tr, and uk, keeping the existing default English values and other locale entries
unchanged.
Review comments at @Sources/Panels/BrowserPanel.swift:
- Around line 4662-4665: In the pane restore flow, `snapshot.cloudTeamID` may be
nil for legacy Cloud panes, leaving `restoredCloudTeamID` unset and allowing
later persistence to use a different active team. Resolve the team using
`WorkspaceCloudVMBinding.owningTeamID(forVMID:previous:)` when the snapshot has
no team ID, then store that resolved ID in `restoredCloudTeamID` and register it
with `CmuxTuiSurfaceProviderRegistry.adoptOwnerTeam`.
Review comments at @Sources/Surfaces/CmuxTuiSurfaceProviderRegistry.swift:
- Around line 499-512: In the refresh path around loadMachineStatus, add bounded
retries for transient status failures when no provider exists, so restored
foreign-pane attachment can obtain a provider before restoreCloudResource shows
the unavailable state. Preserve the existing CloudMachineAccessLoss handling and
avoid relying on background polling or refreshes that only run once.
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📒 Files selected for processing (57)
Packages/macOS/CmuxCloud/Sources/CmuxCloud/Link/CloudMachineLinkManager.swiftPackages/macOS/CmuxCloud/Sources/CmuxCloud/VMClient/CloudMachineAccessLoss.swiftPackages/macOS/CmuxCloud/Sources/CmuxCloud/VMClient/VMClient+Exec.swiftPackages/macOS/CmuxCloud/Sources/CmuxCloud/VMClient/VMClient+ResourceStats.swiftPackages/macOS/CmuxCloud/Sources/CmuxCloud/VMClient/VMClient.swiftPackages/macOS/CmuxCloud/Sources/CmuxCloud/VMClient/VMRequestTeamBinding.swiftPackages/macOS/CmuxCloud/Tests/CmuxCloudTests/CloudMachineAccessLossTests.swiftPackages/macOS/CmuxCloud/Tests/CmuxCloudTests/SurfaceOwnershipPolicyCrossTeamTests.swiftResources/Localizable.xcstringsSources/AppDelegate+TeamScope.swiftSources/Auth/MacAuthComposition.swiftSources/Cloud/CloudTeamScopeObserver.swiftSources/Cloud/CloudTuiManualMirrorSession.swiftSources/Cloud/CloudTuiManualMirrorStopReason.swiftSources/Cloud/MachinesPanelViewModel.swiftSources/CloudTerminalOverlayCoordinator.swiftSources/DockSplitStore+SessionSnapshot.swiftSources/GhosttyTerminalView.swiftSources/Panels/BrowserPanel+CloudConnection.swiftSources/Panels/BrowserPanel.swiftSources/RemoteTui/WorkspaceCloudVMBinding+OwningTeam.swiftSources/RemoteTui/WorkspaceCloudVMBinding.swiftSources/SessionBrowserPanelSnapshot.swiftSources/SessionPersistence.swiftSources/SessionSnapshotImportTrust.swiftSources/Surfaces/CloudWorkspaceRenameService+Reconciliation.swiftSources/Surfaces/CmuxTuiSurfaceProvider+Hosting.swiftSources/Surfaces/CmuxTuiSurfaceProvider+Lifecycle.swiftSources/Surfaces/CmuxTuiSurfaceProvider+PortForward.swiftSources/Surfaces/CmuxTuiSurfaceProviderRegistry+Production.swiftSources/Surfaces/CmuxTuiSurfaceProviderRegistry.swiftSources/Surfaces/CmuxTuiSurfaceProviders.swiftSources/Surfaces/SurfaceCatalog+NameAuthority.swiftSources/Surfaces/Workspace+CloudMachineTeams.swiftSources/Surfaces/Workspace+CloudPaneRouting.swiftSources/Workspace+SessionRestoreIdentity.swiftSources/Workspace.swiftcmux.xcodeproj/project.pbxprojcmuxTests/CloudMultiTeamSurfaceTests.swiftcmuxTests/CloudRefreshFixture.swiftcmuxTests/CloudRefreshURLProtocol.swiftcmuxTests/CmuxTuiSurfaceProviderRegistryDiscoveryTests.swiftcmuxTests/VMClientReadCoalescingTests+ExplicitTeam.swiftweb/app/api/vm/tunnel/route.tsweb/app/api/webhooks/stack/route.tsweb/app/env.tsweb/services/auth/README.mdweb/services/auth/identitySnapshot.tsweb/services/auth/stackWebhook.tsweb/services/vms/auth.tsweb/services/vms/privateNetwork.tsweb/services/vms/teamMemberRevocation.tsweb/services/vms/teamNetworkAccess.tsweb/services/vms/workflows.tsweb/tests/stack-webhook-team-revocation.test.tsweb/tests/vm-private-network.test.tsweb/tests/vm-route-auth.test.ts
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Automatic catch-up couldn't merge Label |
…ud-multi-team # Conflicts: # Sources/Cloud/CloudTuiManualMirrorSession.swift
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Automatic catch-up couldn't merge Label |
…ud-multi-team # Conflicts: # web/services/vms/privateNetwork.ts
Catch-up merge by scripts/ci/catch_up_pr.py (RFC #14631). Merged by scripts/merge-main.sh: origin/main at 7ef6d3a. Resolved conflicts: - Resources/Localizable.xcstrings: xcstrings key-level union - cmux.xcodeproj/project.pbxproj: union of added entries, then normalize-pbxproj.py Catch-up-previous-head: 149c20a Catch-up-base: 7ef6d3a
Merge-main commit by scripts/merge-main.sh. Merged by scripts/merge-main.sh: origin/main at d13dde3. Resolved conflicts: - Resources/Localizable.xcstrings: xcstrings key-level union - cmux.xcodeproj/project.pbxproj: union of added entries, then normalize-pbxproj.py Merge-main-previous-head: 1ddabcf Merge-main-base: d13dde3
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Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Summary
Switching teams froze any open Cloud terminal whose machine belonged to the previous team. The team switch stopped the pane's session and removed its overlay without marking it disconnected, so the pane kept its last frame and dropped input, and reconnect kept retrying a
404 vm_not_found.Cloud surfaces from several teams can now stay open at once:
X-Cmux-Team-Id; the server already checks membership per request.404 vm_not_found,403andvm_owner_mismatchare permanent: terminal and browser panes show "You no longer have access to this machine." and stop retrying.Removing a member now revokes their access at once:
POST /api/webhooks/stackverifies the Svix signature (STACK_WEBHOOK_SECRET, 5 minute tolerance) and, onteam_membership.deleted, detaches every tunnel of that user from the team network and deletes their identity snapshot. Open panes lose their route immediately.team.deleteddetaches the whole team network. The 10 minute reconcile cron stays as the backstop.Operator step after deploy: add a Stack webhook to
https://cmux.com/api/webhooks/stackforteam_membership.deletedandteam.deleted, and setSTACK_WEBHOOK_SECRETon Vercel. Until then the route answers 503 and only the cron enforces removal.Residual risk: after a detach, the VM can hold half-open TCP sockets until they time out; the removed client can no longer send packets. The Cloud file explorer still requires the active team. A machine whose access returns reconnects after rediscovery or restart.
Testing
bun testfor webhook/revocation, private network, route auth, workflows, cron reconcile, identity: 361 pass, 0 fail.bun run typecheck,bun run lint:complexity(no new findings), eslint on touched files.swift test: 225 of 225 pass, including new access-loss and cross-team drop tests.verify-local.py --swift-changed: 8 of 8.cmuxTests(CloudMultiTeamSurfaceTests,VMClientReadCoalescingTests+ExplicitTeam) compile in the fleet build; execution is dispatched through hosted E2E.d2ad058562e845b373c945a7(tagmteam-v3) succeeded against a remote dev backend; the tagged app launched, signed in, and created and switched teams over the debug socket.mteamqa(same commit) against a remote dev backend, with a temporary dev user and two teams, driven through the debug socket:10.90.120.1), removing the user in Stack and runningrevokeTeamMemberAccessdetached 1 tunnel; input typed afterwards never reached the machine and every team pane showed the access-lost card.Changelog
Fixed: Switching teams no longer freezes open Cloud terminals; terminals and browsers from several teams stay connected, and removing a team member cuts their Cloud machine access immediately
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Summary by CodeRabbit
New Features
Bug Fixes