Stm32 devboard routed

This example demonstrates the complete workflow for creating a PCB design programmatically using kicad-tools.

The reviewed assembled design uses MCP1825S-3302E/DB (C148031); do not substitute AMS1117, whose pinout differs. Order two layers with the paid 0.15mm mechanical drilling option and tented through vias. Eight drill positions were moved clear of SMT lands. See DESIGNREVIEW.md for the manufacturer evidence, power limits, and first-article checks. Current fabrication/assembly evidence is hash-bound in output/readiness.json; the full reviewed package is output/manufacturing.zip`.