Add same-net trace segment bridge phase

[HunterCML]

Summary

/claim #29

Adds a dedicated post-cleanup SameNetTraceSegmentBridgeSolver phase for close same-net trace segments. The phase runs after TraceCleanupSolver and before the second net-label placement pass so later label/collision phases consume the bridged traces.

Scope

• groups routed traces by userNetId / globalConnNetId / dcConnNetId
• only bridges horizontal-with-horizontal or vertical-with-vertical internal segments
• requires close coordinates and overlapping projections
• preserves endpoint-only segments so pin anchors are not moved
• leaves different nets untouched
• exports the solver for focused reuse/tests

Validation

• npx --yes bun test tests/solvers/SameNetTraceSegmentBridgeSolver/SameNetTraceSegmentBridgeSolver.test.ts
• npx --yes bun test tests/examples/example29.test.ts tests/examples/example30.test.ts tests/examples/example34.test.ts
• npx --yes bun run build
• .\node_modules\.bin\tsc.exe --noEmit
• git diff --check

AI-assisted with OpenAI Codex; I reviewed the diff and kept the phase conservative to avoid merging unrelated nets or moving endpoint-only pin segments.

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Project	Deployment	Actions	Updated (UTC)
schematic-trace-solver	Ready	Preview, Comment	May 20, 2026 1:34am