Migrate schematic-only ESP32 module circuit example bounty from archived docs-old#47

Context

The bounty issue tscircuit/docs-old#47 ("ESP32 module circuit example", $50) lives in the archived docs-old repo, which is read-only — it cannot be claimed, commented on, or PR'd against. This affects all docs-old bounties (#42, #44, #47, #50, ...), and follows the same migration pattern as earlier work that moved an archived-repo bounty into a live repo.

Proposal

Re-home the schematic-only ESP32 module circuit example bounty here in tscircuit/docs, where it can actually be claimed and reviewed.

The work is already done and ready for review: PR incoming — a complete ESP32-WROOM-32E dev board schematic-only tutorial (per the docs-old#47 description: "similar to the Hardware Academy course on creating a custom ESP32 PCB, but for just the schematic"), built with JLCPCB-stockable parts:

• USB-C connector + AMS1117-3.3 regulator (JLCPCB basic part) with input/output/decoupling caps
• CP2102N USB-UART bridge with crossed UART
• Classic cross-coupled NPN auto-program circuit (DTR/RTS → EN/IO0)
• EN pull-up + power-on-reset delay cap, IO0 boot strap + BOOT button, IO2 user LED
• Embedded live schematic via TscircuitIframe, circuit source verified with tsci build + schematic/PCB snapshots

An /attempt could not be posted on docs-old#47 (archived, read-only). Claiming here per the dibs policy.

Start by reviewing the incoming PR and the original docs-old#47 description for the intended schematic-only ESP32 tutorial. Verify the listed USB-C, regulator, USB-UART, auto-program, boot, and LED components, then run tsci build and inspect the schematic/PCB snapshots; done means the tutorial is ready for review in the live docs repository.