Initial commit: dashboard-elements-ui library

Angular library providing dashboard components including grid layout,
drag-and-drop widgets, resize handles, toolbar, config panel, layout
presets, and persistence services.

demo/package.json

@@ -0,0 +1,29 @@
+{
+  "name": "dashboard-elements-ui-demo",
+  "version": "1.0.0",
+  "private": true,
+  "scripts": {
+    "start": "ng serve --port 4200",
+    "build": "ng build"
+  },
+  "dependencies": {
+    "@angular/animations": "^19.1.0",
+    "@angular/common": "^19.1.0",
+    "@angular/compiler": "^19.1.0",
+    "@angular/core": "^19.1.0",
+    "@angular/forms": "^19.1.0",
+    "@angular/platform-browser": "^19.1.0",
+    "@angular/platform-browser-dynamic": "^19.1.0",
+    "@sda/base-ui": "file:../../base-ui",
+    "@sda/dashboard-elements-ui": "file:../dist",
+    "rxjs": "^7.8.0",
+    "tslib": "^2.3.0",
+    "zone.js": "^0.15.0"
+  },
+  "devDependencies": {
+    "@angular-devkit/build-angular": "^19.1.0",
+    "@angular/cli": "^19.1.0",
+    "@angular/compiler-cli": "^19.1.0",
+    "typescript": "~5.7.2"
+  }
+}