5a1993b6db
A webcam dragged between sources reverted to the bottom of the stack on every relaunch: Source and WebcamSceneConfig each carried independent per-type SortOrder counters, and Load appended all Sources before all configs. Save now stamps both tables' SortOrder from the element's index within scene.Elements; Load merges the two tables' rows by that shared z (sources-first tie-break preserves legacy rows). Cross-type reorder now survives a fresh LayoutStore reload. Task 37 queued: defaults vs current layout split (creator directive) — capture out-of-scope work in TASKS.md rather than folding it in.