Limit restricted center line checks to chip bounds

[baeoc]

Summary

• only reject candidate segments that cross a restricted center line while overlapping the chip bounds
• attach chip bounds to restricted center line metadata so the solver can ignore distant crossings
• add a regression test covering long traces that should pass when no collisions occur

Testing

• bun test tests/solvers/SchematicTraceSingleLineSolver/SchematicTraceSingleLineSolver_long_trace.test.ts (fails: missing bun-match-svg dependency, registry access forbidden in CI)

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https://chatgpt.com/codex/tasks/task_e_68e1ba790bc8832880c227271564a27f