Schema map & relationships — Preview multi-level records (concept)

The page at /MultiLevel is an interactive design concept for nested, multi-level records — a relation marked as owning its children so linked tables nest inside their parent. It is visible only to super admins (an app-operator allowlist), has no link in the rail, and everything on it is hard-coded sample data: edits are never saved, and the Submit → button on the form surface sends nothing. Four numbered tabs show the same idea from different angles: Schema · composition (a field inspector with ownership modes Reference, Owns children, and Belongs to parent), Record panel · document (parent fields with owned children and grandchildren embedded inline, plus live rollup totals), Public form (LiveForm) (the same nesting as a fillable form with cross-level validation), and Ledger view (one row per parent, expandable to depth L0, L1, or L2). A dropdown pill in the top bar switches between two demo datasets — Orders → Line items → Serials and Inspections → Rooms → Defects — and switching resets any edits. A floating Tweaks panel toggles Comfortable/Compact density and whether hidden conditional sections show as ghosted hints.