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openspec/changes/enterprise-react-dnd/proposal.md

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+# OpenSpec Change: enterprise-react-dnd
+
+- **Change ID**: enterprise-react-dnd
+- **Package**: `@suaveplan/react-dnd`
+- **Category**: react
+- **Target path**: `react/ui/react-dnd`
+- **Status**: PROPOSED
+- **Date**: 2026-04-24
+- **Reference spec**: `/mnt/s/web/suaveplan/enterprise/react-dnd.md`
+
+---
+
+## Summary
+
+Deliver `@suaveplan/react-dnd` on genesis from scratch at enterprise quality. A drag-and-drop kit for React with `DndProvider`/`DndContext`, `Draggable`, `Droppable`, and `SortableList`. Genesis upgrades from HTML5-only to a multi-backend architecture supporting HTML5, pointer events, and keyboard navigation; adds `@suaveplan/error`-backed errors, OTel span events, full Playwright E2E, and 100% coverage.
+
+---
+
+## Current-state audit (genesis)
+
+Package does not exist on genesis — fresh build.
+
+---
+
+## Available workspace deps on genesis
+
+| Package | Role |
+|---|---|
+| `@suaveplan/error` (`workspace:^`) | `DndError` |
+| `@suaveplan/types` (`workspace:^`) | Shared option types |
+| `zod` (`catalog:forms`) | Config schemas |
+| `@opentelemetry/api` (`catalog:observability`) | `dnd.drop` span |
+
+External: `tslib catalog:build`. React 18 peer.
+
+---
+
+## Preserved public API surface
+
+```ts
+DndContext, DndProvider
+Draggable           — aria-grabbed, draggable via HTML5/pointer/keyboard
+Droppable           — type-filtered, aria-dropeffect, hover state
+SortableList<T>     — auto-reorder wiring
+
+// Types
+DndContextProps, DndContextValue, DragData, DraggableProps,
+DragState, DropEvent, DroppableProps, SortableListProps
+```
+
+---
+
+## New additions for genesis
+
+1. **Multi-backend**: HTML5 (default), pointer events (touch/stylus), keyboard (arrow keys + space/enter). Backend selected via `DndProvider` `backend` prop.
+2. **`DndError`** — codes: `DND_CONTEXT_MISSING`, `DND_INVALID_DROP_TYPE`.
+3. **`prevent-in-input` guard** — keyboard backend ignores keydown when a text input or contenteditable has focus.
+4. **OTel `dnd.drop` span** — attributes: `dnd.drag_type`, `dnd.droppable_id`.
+5. **Playwright E2E** — HTML5 drag, pointer-event drag, keyboard reorder.
+6. **Stories** — `DndProvider` with `Draggable`+`Droppable` default, `SortableList` default, keyboard variant, playground.
+
+---
+
+## File layout
+
+```text
+react/ui/react-dnd/
+  package.json
+  tsconfig.json
+  vitest.config.ts
+  src/
+    index.ts
+    dnd-context/ (tsx + types + md + test + index)
+    draggable/ (tsx + types + md + test + stories + index)
+    droppable/ (tsx + types + md + test + stories + index)
+    sortable-list/ (tsx + types + md + test + stories + index)
+    backends/
+      html5-backend/ (ts + md + test + index)
+      pointer-backend/ (ts + md + test + index)
+      keyboard-backend/ (ts + md + test + index)
+    types/
+      react-dnd.types.ts
+  e2e/
+    dnd.spec.ts
+```