{"repo":"NousResearch/hermes-agent","public_id":"95595","display_label":"Desktop warm session switch CPU spike fix","summary":"A performance issue where switching to a warm session caused the renderer main thread to run at ~100% CPU for several seconds was identified and addressed. The cluster includes the original bug report and two related fix attempts.","subsystem":null,"counts":{"members":3,"open_issues":0,"open_issues_distinct":0,"open_prs":0,"closed_issues":1,"merged_prs":1,"attempt_prs":1},"landed_fix":{"status":"merged_to_main","basis":"structural","pr":101931,"merged_at":"2026-09-03T06:49:13+00:00"},"resolution":{"state":"resolved","by":"pr-101931"},"freshness":{"state":"verified","last_verified_at":"2026-09-03T06:49:13+00:00","is_stale":false},"grouping":{"backbone":"STRUCTURAL_SPANNING","link_density":1.0},"fix_edges":[{"issue_number":95595,"pr_number":101931,"tier":"verified","basis":"closing_ref","confidence":0.95,"recoverable_from_timeline":true,"pr_merged_at":"2026-09-03T06:49:13+00:00"}],"members":[{"kind":"issue","number":95595,"title":"Desktop: switching to a warm session pegs renderer main thread at ~100% CPU for seconds","url":null,"state":"closed"},{"kind":"pr","number":95690,"title":"fix(desktop): warm session switch pegs renderer main thread at ~100% CPU","url":null,"state":"closed","close_reason":{"refs":[{"kind":"pr","value":"#101931","number":101931}],"category":"superseded_by_pr","implication":"superseded"},"merged":false},{"kind":"pr","number":101931,"title":"fix(desktop): warm session switch no longer pegs the renderer main thread (salvage #95690)","url":null,"state":"merged","close_reason":{"category":"merged"},"merged":true,"is_fix_pr":true,"fix_tier":"verified","files_changed":["apps/desktop/src/app/chat/index.tsx","apps/desktop/src/app/chat/right-rail/preview-file.tsx","apps/desktop/src/app/chat/transcript-window.test.ts","apps/desktop/src/app/chat/transcript-window.ts","apps/desktop/src/app/session/hooks/use-session-actions/index.ts","apps/desktop/src/app/session/hooks/use-session-actions/utils.test.ts","apps/desktop/src/app/session/hooks/use-session-actions/utils.ts","apps/desktop/src/components/assistant-ui/thread/index.test.tsx","apps/desktop/src/components/chat/shiki-block.test.tsx","apps/desktop/src/components/chat/shiki-block.tsx","apps/desktop/src/components/chat/shiki-config.ts","apps/desktop/src/components/chat/shiki-highlight-cache.test.ts","apps/desktop/src/components/chat/shiki-highlight-cache.ts","apps/desktop/src/components/chat/shiki-highlighter.tsx"]}],"trust":{"default_tier":"verified","includes_suggested":false}}