[Bug]: Slept remote workspaces reappear when pending terminal bindings are counted as live #25074

Operating system

macOS client connected to a Linux runtime host.

Orca version

1.4.219. Also inspected upstream main 752871bd678935e07a36e84b64a7a1ce944377e4.

Details

A remote workspace can reappear under Hide sleeping after Sleep even though its terminal has not restarted.

Observed behavior

1. Enable Hide sleeping and sleep a remote workspace with a terminal tab.
2. The workspace disappears.
3. Continue switching between other workspaces without activating the slept one.
4. The slept workspace returns to the sidebar.

In a local recording, Sleep is clicked around 00:04.5, the row disappears by 00:05, and returns by 00:22. The execution host's daemon log contains no corresponding terminal recreation; a subsequent host terminal inventory is empty for this workspace. The recording-time renderer snapshot was not captured, so the exact update responsible for that occurrence remains inferred.

Expected: saved wake identifiers do not count as running terminals, and an intentionally slept workspace stays hidden until it is woken or has other genuine activity.

Reproduced mechanism

A focused diagnostic using the production snapshot reducer reproduces the false activity transition without spawning any process:

• Start with explicit sleep intent, an empty ptyIdsByTabId entry, and the preserved terminalLayoutsByTabId.ptyIdsByLeafId binding that Sleep retains for waking.
• Apply a host terminal snapshot with status: 'pending-handle' and terminal: null.
• The old binding returns to ptyIdsByTabId; isInactiveWorkspace changes from true to false.

Code path:

• src/renderer/src/store/terminals/terminal-shutdown-state.ts:54-61 clears live IDs while keepIdentifiers preserves layout bindings.
• src/renderer/src/runtime/web-session-tabs-sync/terminal-build.ts:23-51 retains those bindings for pending host surfaces, then line 104 counts all layout bindings as live PTY IDs.
• src/renderer/src/runtime/web-session-tabs-sync/apply-terminal-records.ts:29-48 publishes those IDs to the live map.
• The sidebar's activity predicate consequently treats the workspace as awake.

The pending-binding retention function is also present in the installed 1.4.219 renderer bundle. Its history predates the September sleep fix, so this is not yet established as a newly introduced regression.

Related, but different

#10205 / #20075 addressed unintended PTY respawns. #24399 and its open fixes #24410 / #24416 address automatic host recovery restarting slept terminals. This reproduction instead restores client-side live bookkeeping without a terminal spawn.

Suggested fix

Keep the binding needed for wake/reconnect, but do not republish a deliberately slept binding as live activity. Preserve ordinary reconnect handling and explicit wake behavior. Add a regression covering Sleep followed by a pending host snapshot.

The recording is available locally; public visual evidence can follow.