docs: document nightly pre-release builds (user + developer)

jrhubott committed May 31, 2026

Move developer guide from repo into wiki Split docs/DEVELOPMENT.md into 8 dedicated developer pages (Setup/Scripts/Workflow/Testing/Release-Process/Code-Standards/ Debugging/Architecture-Notes), rewrite For-Developers as a hub, and add a For Developers group to the sidebar.

jrhubott committed Apr 20, 2026