Add same-net trace alignment phase

[digzrow-coder]

Fixes #29.
/claim #29

Adds a pipeline phase that aligns nearby same-net trace segments onto a shared X or Y coordinate when their ranges overlap. This runs after overlap shifting and before net label placement so later stages consume the cleaned-up traces.

The alignment solver:

• handles horizontal and vertical interior segments
• preserves trace endpoints connected to pins
• skips different-net segments
• rejects a candidate move if it would introduce a coincident overlap with another net

Verified locally:

• bun test (61 passing, 4 skipped)
• bunx tsc --noEmit
• bun run build
• bunx biome check lib/solvers/SameNetTraceAlignmentSolver/SameNetTraceAlignmentSolver.ts tests/solvers/SameNetTraceAlignmentSolver/same-net-trace-alignment-solver.test.ts lib/solvers/SchematicTracePipelineSolver/SchematicTracePipelineSolver.ts lib/index.ts

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Project	Deployment	Actions	Updated (UTC)
schematic-trace-solver	Ready	Preview, Comment	May 11, 2026 11:12am