Consider merging EuroBusboard-8-IDC-16PIN as a 4th sheet in this project

[NeoRecasata]

The sibling EuroBusboard-8-IDC-16PIN repo holds the Doepfer-standard 16-pin IDC variant. Currently the two repos are split, but they share:

• Same power input / reverse-protection topology
• Same indicator LED design
• Same general layout intent

This project's KiCad already has 3 sheets (IDC+JST combined / IDC-only / JST-only) — adding a 4th sheet for the 16-pin variant would mean one fewer repo to maintain.

Trade-offs:

Keep split	Merge into one
Cleaner separation if 16-pin diverges from 10-pin	One repo to keep updated
16-pin variant gets its own issue tracker	Single issue tracker
Bigger fab footprint requires its own PCB project file regardless	Easier to ensure power-input consistency across variants

The current 16-pin repo has TODO items (schematic export, reverse-protection diodes, LICENSE) that could be resolved as part of a merge.

Action:

• Decide: keep separate (close this issue) or merge
• If merge: copy the 16-pin schematic + PCB into this project as sheet 4
• Archive (or delete) the EuroBusboard-8-IDC-16PIN repo
• Update READMEs accordingly