refactor(graph): extract gesture sub-handlers from GraphInteractionHandler - #23
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The 930-line GraphInteractionHandler monolith is replaced by five focused
sub-handlers, each owning its own state and gesture logic:
- ZoomGestureHandler — wheel zoom, pinch-to-zoom, double-click reset,
zoomIn() / zoomOut() programmatic API
- PanGestureHandler — drag-to-pan, pan() programmatic API
- AxisGestureHandler — per-axis touch pan/pinch and mouse drag/wheel
- HeaderDragHandler — header-bar drag to reposition the panel
- ResizeGestureHandler — corner resize handles with min-size enforcement
GraphInteractionHandler is now a thin 176-line coordinator that constructs
the sub-handlers and delegates all public methods (zoomIn, zoomOut, pan,
createResizeHandles, updateDimensions, updateResizeHandlePositions) to them.
The public API and ConfigurableGraph call sites are unchanged.
https://claude.ai/code/session_013dWYKSZB811fgmpamGvtep
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The 930-line GraphInteractionHandler monolith is replaced by five focused
sub-handlers, each owning its own state and gesture logic:
zoomIn() / zoomOut() programmatic API
GraphInteractionHandler is now a thin 176-line coordinator that constructs
the sub-handlers and delegates all public methods (zoomIn, zoomOut, pan,
createResizeHandles, updateDimensions, updateResizeHandlePositions) to them.
The public API and ConfigurableGraph call sites are unchanged.
https://claude.ai/code/session_013dWYKSZB811fgmpamGvtep