Remote session viewer shows stale 'running' tool tasks from dead sessions; dismissal does not persist

Environment

• Claude Code CLI 2.1.170
• Windows 11 Home (10.0.26200)
• Session viewed remotely via the web session viewer while the CLI runs locally

Symptom

The remote session viewer shows 2 tool invocations as still RUNNING — labeled with the tool-call descriptions "Sim 빌드" and "오류 상세" (PowerShell dotnet build commands) — with elapsed times of 29h02m and 24h56m.

• These originate from a previous session (the CLI session was likely terminated before completion was reported to the service).
• The current CLI session shows no such tasks (TaskList empty, no background commands running).
• No corresponding processes exist on the machine — verified: no orphaned MSBuild / dotnet / PowerShell processes (we also ran dotnet build-server shutdown and killed reuse nodes; the stale entries are unrelated to live processes).
• Force-clearing the entries in the remote viewer works only momentarily — they reappear after the viewer is restarted/refreshed.

Expected

Orphaned task records from dead sessions should be marked terminated (or expire via TTL), and a manual dismissal should persist.

Actual

The stale "running" records resurrect indefinitely after every viewer restart.

Steps to reproduce (presumed)

1. Run long dotnet build commands via the PowerShell tool in a CLI session.
2. Terminate the CLI session abnormally before/around tool completion.
3. Open the remote session viewer → the tool calls show as RUNNING forever.
4. Dismiss them → restart the viewer → they are back.