Module commit_graph 

Reusable Canvas-based commit graph widget — GitKraken / subway-map style.

Features:

• Click-and-drag to pan horizontally (for wide graphs)
• Left-click on a node to select the commit
• Right-click on a node for context menu
• Canvas sized to visible rows only (GPU-friendly)

Structs

CommitGraph

A commit-graph widget with built-in horizontal drag-to-pan.

GraphDragState

Drag state for horizontal panning, stored as the Canvas State.

Constants

LANE_W

Width of one graph lane in pixels.