update-bom

name	update-bom
description	Use when the BOM in BUILD_GUIDE.md needs to be checked against or synchronized with the schematic in hardware/pcb/schematic.pdf or the KiCad source in hardware/pcb/kicad/. Trigger when adding, removing, or changing electronic components, or when the user asks to verify BOM correctness.

Update BOM Skill

Follow these steps to safely synchronize the Bill of Materials with the hardware design:

1. Read current BOM table in BUILD_GUIDE.md §1.
2. Cross-reference with hardware/pcb/kicad/patternflow.kicad_sch (if readable) or hardware/pcb/schematic.pdf (note its existence and ask user for confirmation if unable to parse PDF directly).
3. Verify counts match:
   • Resistors (R1–R12) = 12x 10kΩ 0805
   • Capacitors (C1–C10, C12–C15) = 14x 100nF 0805
   • Bulk Capacitor (C11) = 1x 1000µF electrolytic
   • Connectors (J1, J2, J3)
   • Encoders (SW1–SW4) = 4x EC11
   • MCU (U1) = ESP32-S3-WROOM-1 (N16R8)
4. Report mismatches to the user before making any edits.
5. After confirming, update BUILD_GUIDE.md and any relevant AliExpress affiliate sourcing links to match the verified components.