feat: implement connector standard="usb_c" flow

[Lulzx]

Summary

Implements the <connector standard="usb_c" /> flow as described in issue #748.

This feature allows users to create USB-C connectors with automatic standard pin mapping:

<connector standard="usb_c" name="USB1" />
<trace from=".USB1 > .DP" to=".MCU > .USB_DP" />
<trace from=".USB1 > .DM" to=".MCU > .USB_DM" />

Implementation

This feature is implemented across multiple repositories:

Repository	PR	Description
tscircuit/core	tscircuit/core#1715	Add Connector component with USB-C standard support
tscircuit/parts-engine	tscircuit/parts-engine#17	Add USB-C connector support and findStandardPart API
tscircuit/props	tscircuit/props#525	Add StandardPartResult type and findStandardPart to PartsEngine
tscircuit/circuit-json	tscircuit/circuit-json#366	Add source_simple_connector type

No code changes are needed in this repository as it re-exports from @tscircuit/core. Once the dependent packages are published, the Connector component will be available automatically.

Features

• USB-C standard pin mapping (DP, DM, CC1, CC2, VBUS, GND, SBU, TX/RX)
• Automatic port creation with standard names
• Parts engine integration for JLCPCB USB-C connectors
• findStandardPart() API for footprint and pin mapping

Test plan

• Unit tests pass in tscircuit/core
• Build passes in all repositories
• Formatting checks pass

/claim #748

[RaghavArora14]

hey sorry to inform you but bounties have been paused for the time being.

[Lulzx]

hey sorry to inform you but bounties have been paused for the time being.

Thanks for letting me know @RaghavArora14! No worries about the bounty pause. I'm primarily interested in contributing to the project and building my open source portfolio.

The implementation is complete across all repos (core, parts-engine, props, circuit-json) with tests passing.

Would love to get these reviewed and merged when maintainers have bandwidth. Happy to address any feedback!

[RaghavArora14]

In that case you'd have to ask @Abse2001 , I think he was assigned this issue, and if you want to look for more issues feel free to join discord and see the new contributors channel, you'll find a very detailed guide there to start contributing. Feel free to reach out in case you need any help