Replace traditional chat bubble layout with a Claude Code-inspired
timeline/workflow design:
- Vertical gray line connecting sequential event nodes
- Colored dots for each event (green=done, red=error, yellow=warning)
- Animated spinning asterisk (*) on active nodes
- Streaming text with blinking cursor in timeline nodes
- Tool execution shown as code blocks within timeline
- User prompts as distinct nodes with person icon
New file: timeline_event_node.dart (TimelineEventNode, CodeBlock)
Rewritten: chat_page.dart (timeline layout, no more bubbles)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
hailin
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