fix(desktop): isolate preview artifact chips per session view

[stantheman0128]

Summary

Closes #66411

Credit: Stan Shih (@stantheman0128). Developed with AI assistance (Cursor / Grok).

In multi-session Desktop split, tool fallback recorded HTML/localhost preview chips under the global \. Both panes stay mounted, so focusing session A while session B's tool rows were still mounted re-keyed B's artifacts into A's composer status stack.

The composer already reads \[sessionId] per pane. This PR makes the write path match: ToolFallback uses useSessionView() (\ / \) instead of the global active session stores.

Verification

`
cd apps/desktop
npx vitest run --project ui src/components/assistant-ui/tool/fallback-preview-isolation.test.tsx src/components/assistant-ui/tool/fallback.test.ts src/components/assistant-ui/tool/fallback-model.test.ts

Test Files 3 passed | Tests 31 passed

`

`
python scripts/check-windows-footguns.py --diff HEAD~1

No Windows footguns found

`

Regression covers: tile view session-b with global active session-a records only under session-b.

Made with Cursor

[tonydwb]

Code Review Summary

Verdict: Comment

Critical

• None

Assessment

Adds contributor email record for TheUnathiCodex and a test regression file for the TUI gateway queue-on-busy behavior. Tests verify that busy submit correctly interrupts, queues, or steers based on the configured mode.

Looks Good

• New contributor added to emails directory
• Tests cover interrupt/queue/steer modes for busy state handling
• _session(agent=agent, running=True) correctly simulates a running session

---

Reviewed by Hermes Agent

[teknium1]

Thanks for the focused Desktop regression fix. The premise is confirmed on current main: ToolEntry writes preview artifacts using the global $activeSessionId and $currentCwd at apps/desktop/src/components/assistant-ui/tool/fallback.tsx:313-323, while tiles provide their own session view to the ChatView subtree at apps/desktop/src/app/chat/session-tile.tsx:135-163.

The proposed useSessionView() write path matches the existing per-session read path in apps/desktop/src/app/chat/composer/status-stack/index.tsx:79, and the added test exercises the primary/tile identity mismatch that causes the leak. The only recordPreviewArtifact writer is this fallback path, so no sibling writer remains unaddressed.

Automated hermes-sweeper review.

[stantheman0128]

Thanks for the overlapping work on #68683.

That PR covers the same #66411 chip isolation case and also owns dismissal persistence across session switch / compress / restart via a session-owned publisher. Ours is the narrower write-path fix only.

Happy to close this in favor of #68683 once that one lands (or sooner if maintainers prefer). Thanks @nv-cho for the fuller treatment and for the credit note.

[stantheman0128]

Closing as author to bring our open PRs on hermes-agent back within a healthy throttle (we had 10 open with only sweeper keep_open and no concrete maintainer change requests for days).

Keeping three Windows-focused PRs open for now:

• fix(desktop): avoid Explorer DnD image preview freeze on Windows #66546 (Explorer DnD image preview freeze on Windows)
• fix(tools): translate MSYS paths to Windows-native before shell lint (#66494) #66524 (MSYS path translation before shell lint)
• fix(browser): keep local Chromium headless on Windows Desktop (#64867) #66523 (local Chromium headless on Windows Desktop)

Happy to reopen this one if a maintainer wants it prioritized. Thanks for the patience.