Band Lineup 1.12.0: dragging photos into spots works with a finger and stops dropping out

The editor used the browser's built-in drag-and-drop, which never fires for
a touchscreen, flickered its drop highlight over a card's inner parts, and
lost the drag whenever a board update arrived mid-drag (the editor was
rebuilt under the pointer).

Dragging is now driven by pointer events, one path for mouse and touch: a
mouse drags as soon as it moves, a finger holds still for a moment first so
a swipe still scrolls. A floating copy of the photo follows the pointer, the
spot under it lights up, the editor auto-scrolls near its edges, and board
updates wait until the drop. Tap a photo then tap a spot still works.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

modules/band-lineup/module.json

@@ -1,7 +1,7 @@
 {
   "id": "band-lineup",
   "name": "Band Lineup",
-  "version": "1.11.1",
+  "version": "1.12.0",
   "proddash": ">=1.4.0",
   "description": "Stage lineup photos with mic/pack labels — a drag-in photo library plus optional Planning Center auto-fill",
   "client": "client.js",