Merge nearby same-net trace lines

[prokesmic]

/claim #34

Closes #34

Summary

• Adds a same-net trace cleanup pass that aligns nearby overlapping horizontal or vertical trace segments.
• Keeps endpoint segments fixed so traces remain attached to pins.
• Moves the shorter internal segment onto the longer overlapping segment, then simplifies the path.
• Rejects same-net alignment moves that would create a coincident overlap with a different net.
• Covers horizontal, vertical, different-net, foreign-net-overlap, and issue-specific example34 behavior with tests.

Verification

• npx bun test tests/examples/example34.test.ts -> 1 pass, 0 fail
• npx bun test tests/solvers/TraceCleanupSolver
• npx bun run format:check
• npx bun run build
• npx bun test

Full suite result: 61 pass, 4 skip, 0 fail.

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Project	Deployment	Actions	Updated (UTC)
schematic-trace-solver	Ready	Preview, Comment	May 17, 2026 6:46am