# NousResearch/hermes-agent · Cache and defer Mermaid rendering on desktop

## Open now

- 0 issues, 2 PRs open on GitHub.
- PR #98967: perf(desktop): cache and defer mermaid renders to prevent transcript stalls
- PR #98986: perf(desktop): cache and defer Mermaid rendering

These entries all describe the same performance work: caching and deferring Mermaid diagram rendering on desktop to prevent transcript stalls. They appear to be iterations or duplicates of the same change with slightly varying titles.

## TL;DR

- 4 member(s): 0 open issue(s), 1 closed issue(s), 2 open PR(s), 1 merged PR(s), 0 PR(s) closed without merging.
- A fix was merged to main in PR #128578. Verify it addresses your case.
- **Recommended:** read PR #128578 (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-128578`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.67`: 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

- #98951: perf(desktop): cache and defer Mermaid rendering to prevent transcript stalls

## Prior & competing PRs

- **#128578: perf(desktop): cache and defer mermaid renders so transcripts with diagrams do not stall**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `apps/desktop/src/components/assistant-ui/embeds/mermaid-embed.test.tsx`, `apps/desktop/src/components/assistant-ui/embeds/mermaid-embed.tsx`, `apps/desktop/src/components/assistant-ui/embeds/mermaid-render-cache.test.ts`, `apps/desktop/src/components/assistant-ui/embeds/mermaid-render-cache.ts`, `apps/desktop/src/components/assistant-ui/embeds/registry.tsx`
- **#98967: perf(desktop): cache and defer mermaid renders to prevent transcript stalls**. open
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `#98986`
  - files: `apps/desktop/src/components/assistant-ui/embeds/mermaid-embed.tsx`, `apps/desktop/src/components/assistant-ui/embeds/mermaid-render-cache.test.ts`, `apps/desktop/src/components/assistant-ui/embeds/mermaid-render-cache.ts`
- **#98986: perf(desktop): cache and defer Mermaid rendering**. open
  - maintainer direction: category `duplicate_of`; implication `duplicate`; refs `#98967`
  - files: `apps/desktop/src/components/assistant-ui/embeds/mermaid-embed.test.tsx`, `apps/desktop/src/components/assistant-ui/embeds/mermaid-embed.tsx`, `apps/desktop/src/components/assistant-ui/embeds/mermaid-render-cache.test.ts`, `apps/desktop/src/components/assistant-ui/embeds/mermaid-render-cache.ts`, `apps/desktop/src/components/assistant-ui/embeds/registry.tsx`

## Fix status

- Merged to main in PR #128578 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-10-01`.
- Subsystem: `apps/desktop`