I found the main ICs/connector have LCSC matches; I’m filling the passives and LEDs with common JLC/LCSC parts by value/package and preserving the current schematic symbols/footprints.
Updated the BOM-bearing components with manufacturer MPNs, LCSC/JLCPCB sourcing fields, package info, and preferred distributor set to LCSC. Verified afterward that every BOM group now has an MPN.
Open items:
Some passive/LED/inductor Flux library results confirmed LCSC availability but did not expose exact LCSC C-numbers, so I noted that in the LCSC Part Number field.
The inductor has a caveat: no exact 1206/3216 LCSC library match was found, so I selected a LCSC-available 2.2uH TDK part and noted the footprint mismatch risk.
Suggested next steps:
Replace the inductor with an exact LCSC part if you want guaranteed footprint match.
Export/check the BOM for JLCPCB assembly compatibility.
Run a final schematic/ERC review before manufacturing export.