# NousResearch/hermes-agent · Preview bridge hang and routing fixes

## Open now

- Nothing open on GitHub.

A bug where preview-related actions hang when the Desktop preview bridge is absent or unresponsive, addressed by failing fast and correctly routing bridge replies to their request owners.

## TL;DR

- 4 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #127244. Verify it addresses your case.
- **Recommended:** read PR #127244 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `resolved` · deciding PR(s): `pr-127244`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.50`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Closed / duplicate issues

- #94272: \[Bug\] drive_preview and annotate_preview hang when Desktop preview bridge does not answer

## Prior & competing PRs

- **#127244: fix(tui-gateway): fail fast when the preview act bridge cannot answer**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `tests/tools/test_drive_preview_tool.py`, `tests/tools/test_read_preview_tool.py`, `tests/tui_gateway/test_preview_action_bridge_fail_fast.py`, `tools/annotate_preview_tool.py`, `tools/drive_preview_tool.py`, `tools/read_preview_tool.py`, `tools/read_terminal_tool.py`, `tui_gateway/agent_callbacks.py`, `tui_gateway/server.py`
- **#94300: fix(desktop): fail fast when preview action bridge is absent**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`
- **#102935: fix(desktop): route bridge replies to request owner**. closed without merge
  - maintainer direction: category `duplicate_of`; implication `duplicate`; refs `#102883`

## Fix status

- Merged to main in PR #127244 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-29`.