- Fix UTF-8 decoding with TextDecoder for base64 session data
- Use toolOutput color for expand hints (not borderAccent)
- Remove '- click to expand' text to match TUI
- Ctrl+O toggles expanded state (not visibility) on tool outputs
- Edit diffs always visible (not affected by Ctrl+O)
- Remove Ctrl+F override to allow browser search
- Replace tabs with 3 spaces in all tool outputs
- Fix syntax highlighting default color to use --text
- Add more hljs token selectors (property, punctuation, operator)
- Compaction uses customMessageBg/Label/Text colors
- Model change uses dim color without background
- Scroll to end on initial load
- Pointer cursor on expandable elements
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