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Preserve legacy SSH ownership during file preview restore - #14119
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📝 WalkthroughWalkthroughSSH snapshots now carry an owner marker. Restore configurations retain existing descriptors for persistent SSH sessions, and TUI restoration checks the owner before accepting a session. Tests cover legacy snapshots and managed-session serialization. ChangesSSH session ownership and restore
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix Merge Risk: 🟡 Moderate · up to Legacy SSH sessions that are saved after this change can be labelled as cmux-tui sessions. On the next restore they may be replaced by a new TUI workspace instead of being preserved. Ownership should be recorded only where TUI sessions are created before this merges. 🚥 Pre-merge checks | ✅ 24 | ❌ 1❌ Failed checks (1 warning)
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This was referenced Sep 24, 2026
…e-preview-finish # Conflicts: # cmuxTests/SSHTuiMigrationTests.swift
…rapper Since #13866 `cmux ssh` hands every TTY session to cmux-tui through workspace.ssh.open, so the CLI never generates the persistent PTY startup wrapper these four SSHStartupManualReconnectTests drove through it. They failed on every main run with "Unexpected method workspace.ssh.open". #14204 removed the matching CLINotifyProcessIntegrationRegressionTests cases. The supervisor-level tests that call persistentAttachSupervisorCommand directly stay. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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In
`@Packages/macOS/CmuxCore/Sources/CmuxCore/Remote/WorkspaceRemoteConfiguration.swift`:
- Line 535: Update the SSH ownership logic around `snapshot.sshSessionOwner` to
derive ownership from the session’s authoritative owner, not `.ssh` transport or
`skipDaemonBootstrap`; leave ownership unset for legacy sessions and serialize
`cmux-tui` only for TUI-owned sessions. Add a save-and-restore test covering the
persistent legacy configuration and verify restore preserves its existing
session.
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Packages/macOS/CmuxCore/Sources/CmuxCore/Remote/SessionRemoteWorkspaceSnapshot.swiftPackages/macOS/CmuxCore/Sources/CmuxCore/Remote/WorkspaceRemoteConfiguration.swiftSources/RemoteTui/SSHTuiWorkspaceCoordinator.swiftSources/RemoteTui/SessionRemoteWorkspaceSnapshot+TuiSSH.swiftSources/SessionRemoteWorkspaceSnapshot+Restore.swiftcmuxTests/SSHTuiMigrationTests.swift
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#13866 retired the persistent cmuxd-remote PTY wrapper for SSH, and this PR restores a legacy persistent snapshot as a blocked descriptor instead of reattaching it or starting a replacement shell. These tests pinned the old behavior: reattach through the relay, rewrite relay context IDs, fall back to a plain `ssh -tt` when the snapshot was incomplete, and bootstrap the persistent daemon. They failed on every main run since #13866. - Remove 13 TabManagerSessionSnapshotTests, 3 RemoteResumeBindingTests, 2 SSHRemoteCommandChainingTests, the binding-only persistent resume case, RemotePTYReconnectLifecycleTests and the persistent PTY daemon capability reinstall test, plus the private helpers only they used. - The daemon upload test now carries the relay the CLI's no-TTY path sends, which keeps it on the cmuxd-remote bootstrap that is still live. - A snapshot claims cmux-tui ownership only under routesThroughSSHTui's rule, so a relay configuration's snapshot stays legacy. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…e-preview-finish # Conflicts: # cmuxTests/SSHStartupManualReconnectTests.swift
Review nits: withResolvedSSHControlPath now keeps restoredSSHSession like the other copy helpers, the retired RemotePTYReconnectLifecycleTests timing entry is gone, and a stray blank line is removed. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…e-preview-finish # Conflicts: # cmuxTests/RemotePTYReconnectLifecycleTests.swift # cmuxTests/RemoteResumeBindingTests.swift # cmuxTests/SSHRemoteCommandChainingTests.swift # cmuxTests/TabManagerSessionSnapshotTests.swift # cmuxTests/TerminalStartupRestoreFailureTests.swift # cmuxTests/WorkspaceRemoteConnectionTests.swift
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Resolve test conflicts against current main: - AgentSessionAutoResumeSwiftTests: take main. Main's snapshotOfRunningAgent helper and explicit awaiting -> commandRunning steps already cover what snapshotWithPersistedAgentRunning/advanceAutoResumeCommand did here; keeping both would double-advance the resume state. - CLILocalTmuxReviewRegressionTests: take main, which kept the direct LocalTmuxCommandBuilder tests and updated them for the if-shell attach wrapper. Drop CLILocalTmuxProductionBoundaryTests, whose methods would collide with those names and whose attach assertion predates the wrapper. - RemoteResumeBindingTests / RemoteResumeBindingLifecycleTests: main (manaflow-ai#14119) now restores legacy persistent SSH snapshots as blocked descriptors and retired the binding-only persistent restore case, so drop persistentBindingOnlyRestoreTracksStartupCommandUntilPromptReturns and its socket helpers. Keep the ended-session test; remoteConfiguration stays internal for it. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This was referenced Sep 25, 2026
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Follow-up to #13866.
Restored SSH snapshots written by older cmux versions must remain associated with their original owner. This preserves the descriptor through configuration copies and prevents restore from silently claiming a legacy session as a new cmux-tui session. Managed SSH snapshots record explicit ownership so native previews continue to restore correctly.
Finishing changes (from the main app-host cleanup)
SSHStartupManualReconnectTestspersistent-attach tests; those files now match main.sshSessionOwner = "cmux-tui"is written only when the config actually routes through cmux-tui (SSH terminal transport, daemon bootstrap on, no relay port, no daemon WebSocket endpoint), the same rule asroutesThroughSSHTuifrom fix(ssh): keep legacy relay configurations off the cmux-tui path #14216. Relay and mosh configs keep the legacy path and are not stamped.TabManagerSessionSnapshotTests, 3RemoteResumeBindingTests, 2SSHRemoteCommandChainingTests,persistentSSHBindingOnlyResumeBypassesLocalCensusAdmission,testPersistentPTYBootstrapReinstallsOldDaemonMissingPTYCapability, andRemotePTYReconnectLifecycleTests.swift(with its pbxproj entries), plus orphaned private helpers.testDaemonBootstrapUpload…now configures a relay port, relay ID/token, and socket path, so it still exercises the legacy daemon bootstrap that stays live for relay configs.Validation
Focused app-host runs on blacksmith-6vcpu-macos-15 for
TabManagerSessionSnapshotTests,WorkspaceRemoteConnectionTests,TerminalStartupRestoreFailureTests,RemoteResumeBindingTests,SSHRemoteCommandChainingTests,SSHStartupManualReconnectTests,SSHTuiMigrationTests, andWorkspaceRemoteBadgeTruthTests: green before the latest main merge (run 36010288899), rerun on the merged head in 36014492204.🤖 Generated with Claude Code
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@codesmith-botwith what you need. Autofix is disabled.Summary by cubic
Restoring a snapshotted SSH session now preserves its original owner so legacy cmux sessions are never silently claimed as a new cmux-tui session. Legacy persistent snapshots restore as a blocked descriptor instead of reattaching through the relay or spawning a replacement shell.
Bug Fixes
sshSessionOwner; managed SSH writes"cmux-tui", legacy snapshots leave it unset."cmux-tui"instead of claiming them.WorkspaceRemoteConfigurationcarries the restored snapshot throughscopedToOwnerWorkspace,withDaemonWebSocketEndpoint, resolved-ControlPath, and lease-generation copies.Written for commit a122d8f. Summary will update on new commits.
Summary by CodeRabbit
Bug Fixes
Improvements