Serialize native PCB arcs

[ShiboSoftwareDev]

Summary

• encode PCB Arc primitives into native Arcs6 binary records
• preserve center, radius, start/end angles, width, ownership, net, layer, and keepout flags
• decode the native keepout bit and keep unsupported-record rejection strict

This is the writer prerequisite for preserving curved copper routes in circuit-json-to-altium.

Tests

• bun test tests/binary-pcb-arc-creation.test.ts tests/binary-pcb-unsupported-record-rejection.test.ts
• bun run typecheck
• bun run format:check
• bun run build

The full suite was also attempted. TI currently returns 403 from bun run download-references; tests backed by the available local corpus ran, while tests requiring the missing Novena, Elk Pi, and dated SimpleFOC files could not load their fixtures.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
altiumts	Error		Aug 31, 2026 8:18pm