- Fix CSS position:absolute missing for 5 trip planning shapes
- Expand arrow connection mode to all 21 shape types (was only 2)
- Center new shapes in viewport instead of clustering top-left
- Extract createAndAddShape() utility, eliminating ~270 lines of duplication
- Add missing Google Item toolbar button
- Add error handling on remote shape creation (try-catch-finally)
- Implement actual WebSocket keep-alive ping (was a no-op)
- Use shape.toJSON() in sync layer to capture all shape properties (was only 3 types)
- Add index signature to ShapeData for arbitrary shape-specific properties
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Jeff Emmett
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