Note

Medium Risk
Changes proposed-plan rendering logic in ChatView/PlanSidebar, which could affect plan display/export UX or introduce subtle UI regressions for long/edge-case markdown. Covered by new unit and browser tests, but still touches core chat UI layout.

Overview
Defers heavy proposed-plan markdown rendering until the user expands it. Long plans in ChatView now render a truncated preview by default and only render the full markdown after clicking Expand plan, keeping collapsed cards lightweight.

Adds stripDisplayedPlanMarkdown and buildCollapsedProposedPlanPreviewMarkdown helpers in proposedPlan.ts (with tests) to drop redundant title/Summary headings and generate a line-limited preview with an ellipsis. The plan sidebar also uses the stripped markdown for its expanded view, and a new browser-level regression test asserts hidden long-plan content is not present until expansion.

^{Written by Cursor Bugbot for commit 039ce6e. This will update automatically on new commits. Configure here.}

Note

Defer proposed plan markdown rendering until users expand in ChatView

• Adds stripDisplayedPlanMarkdown and buildCollapsedProposedPlanPreviewMarkdown utilities in proposedPlan.ts to strip redundant title/Summary headings and generate truncated previews (default 8–10 lines) with an overflow ... indicator.
• ProposedPlanCard in ChatView.tsx now renders the collapsed preview when canCollapse is true, showing an 'Expand plan' button to reveal the full content.
• PlanSidebar.tsx applies stripDisplayedPlanMarkdown when rendering the expanded proposed plan, hiding the title and initial Summary heading.
• Behavioral Change: Plans with a leading title or 'Summary' heading will no longer display those headings in either the sidebar or chat view.

^{Macroscope summarized 039ce6e.}