Replace fixed IntermediateGridSpacing=40 with average node height (~100px).
A* grid cells are now node-sized in corridors, forcing edges through wide
lanes between node rows. Fine node-boundary lines (±18px margin) still
provide precise resolution near nodes for clean joins.
Visual improvement is dramatic: edges no longer hug node boundaries.
NodeSpacing=50 test set. Remaining: ExcessiveDetourViolations=1 and
edge/9 under-node flush. Target-join, shared-lane, boundary-angle,
long-diagonal all clean.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Replace string-based conflict keys (source:{nodeId}, target:{nodeId}) with
geometric bounding-box overlap detection. Edges now conflict only when their
routed path bounding boxes overlap spatially (with 40px margin) or share a
repeat-collector label on the same source-target pair.
This enables true spatial parallelism: edges using different sides of the
same node can now be repaired in parallel instead of being serialized.
Sprint 006 TASK-001 final criterion met. All 4 tasks DONE.
Tests verified: StraightExit 2/2, HybridDeterministicMode 3/3,
DocumentProcessingWorkflow artifact 1/1 (all 44+ assertions pass).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
