BW engineering-review mesh source notices BW derives from the six saved BV native files. Only the left upper lamp channels, left metal nameplate and left flush optical inlay change. All four visible luminous seams use parallel edges and a verified constant 0.42 mm width. The naturally enclosed centre square is offset by half that width so the seams meet it with clean mitres instead of tapering or leaving end tabs. The BV right pure-hexagonal optic and no-circle upper geometry are preserved. This non-commercial review contains tessellated display assets, not fabrication files or a manufacturing release. Native CAD, KiCad, STEP and Gerber files are not included. The buried-bridge/inlay process, adhesion, optical uniformity, tolerances, supplier DFM and real assembly remain unapproved. EC60 main-board body basis Source: https://github.com/4pplet/EC60 Commit: b9c04625bb9944f6fb806aa571da8592cdff8565 Copyright (c) 2022 Cipulot. MIT License; see EC60-LICENSE.txt. Topre plate and ai03 UDB-C4 notices are retained in the adjacent license files. All source components and adaptations are provided without warranties.