Add same-net trace merge phase

[jamilahmadzai]

/claim #29
/claim #34

Summary

• add a dedicated same-net trace merge phase after trace cleanup
• align nearby overlapping horizontal/vertical same-net internal segments onto a shared axis
• preserve terminal pin legs and skip moves that would collide with a different-net trace
• export the solver helper and add focused coverage for horizontal, vertical, different-net, and blocked-collision cases

Validation

• ./node_modules/.bin/tsc --noEmit
• npm run build
• npx biome check lib/solvers/SameNetTraceMergeSolver/SameNetTraceMergeSolver.ts lib/solvers/SameNetTraceMergeSolver/mergeSameNetTraceSegments.ts tests/solvers/SameNetTraceMergeSolver/same-net-trace-merge-solver.test.ts
• direct Node smoke test against the built dist/index.js

Payout

Payment method: Algora bounty-platform payout to GitHub user @jamilahmadzai.

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Project	Deployment	Actions	Updated (UTC)
schematic-trace-solver	Ready	Preview, Comment	May 21, 2026 9:20pm