Fix close same-net trace alignment

[VexCode24]

Summary

• aligns close same-net interior horizontal/vertical trace segments when they are within the routing padding threshold
• preserves pin endpoint segments so cleanup does not disconnect traces from pins
• adds focused regression coverage for same-net alignment, different-net isolation, and fixed endpoints

Fixes #34
/claim #34

Tests

• bun test tests/solvers/TraceCleanupSolver/align-close-same-net-trace-segments.test.ts tests/solvers/TraceCleanupSolver/TraceCleanupSolver.test.ts
• node node_modules/typescript/bin/tsc --noEmit
• node node_modules/tsup/dist/cli-node.js lib/index.ts --format esm --dts
• node_modules/@biomejs/cli-win32-x64/biome.exe check --write lib/solvers/TraceCleanupSolver/TraceCleanupSolver.ts lib/solvers/TraceCleanupSolver/alignCloseSameNetTraceSegments.ts tests/solvers/TraceCleanupSolver/align-close-same-net-trace-segments.test.ts

[vercel]

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Project	Deployment	Actions	Updated (UTC)
schematic-trace-solver	Ready	Preview, Comment	May 25, 2026 2:26pm