Initial commit: timeline-elements-ui library

Angular 19 component library for timelines and event tracking:
timeline, Gantt chart, event cards, date markers, connectors,
and custom event templates. Includes signal-based services,
SCSS design tokens with dark mode, and TypeScript type definitions.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -0,0 +1,40 @@
+{
+  "name": "@sda/timeline-elements-ui",
+  "version": "0.1.0",
+  "description": "Angular components for timeline, activity feed, audit trail, changelog, and Gantt chart displays powered by @sda/base-ui",
+  "keywords": [
+    "angular",
+    "timeline",
+    "activity",
+    "audit",
+    "changelog",
+    "gantt",
+    "components",
+    "ui"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "https://git.sky-ai.com/ui-core-design/timeline-elements-ui.git"
+  },
+  "license": "MIT",
+  "sideEffects": false,
+  "scripts": {
+    "build": "ng-packagr -p ng-package.json",
+    "build:dev": "./build-for-dev.sh"
+  },
+  "peerDependencies": {
+    "@angular/common": "^19.0.0",
+    "@angular/core": "^19.0.0",
+    "@sda/base-ui": "*"
+  },
+  "devDependencies": {
+    "@angular/common": "^19.1.0",
+    "@angular/compiler": "^19.1.0",
+    "@angular/compiler-cli": "^19.1.0",
+    "@angular/core": "^19.1.0",
+    "@angular/forms": "^19.1.0",
+    "@sda/base-ui": "file:../../sda-frontend/libs/base-ui/dist",
+    "ng-packagr": "^19.1.0",
+    "typescript": "~5.7.2"
+  }
+}