- Sidebar: click-and-drag resize handle (200-500px range), accent
highlight on drag, cursor changes to col-resize
- BranchNode: hover/active expands to show context_summary (tried,
result), status_reason, and step count with smooth animation
- ForkCard: "Fork Point" label changed from text-muted to
text-accent-text for visibility against bg-card
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Renders fork reason text and a list of option buttons. Selected option
gets an accent border and accent-dim background. Unselected options use
border-default. GitFork icon in header.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>