Initial commit: notification-elements-demo app

Interactive Angular 19 demo for @sda/notification-elements-ui with
6 sections: Bell & Feed, Notification Center, Inbox, Comments &
Threads, Mention Input, and Full-Featured layout. Includes mock
data, dark mode toggle, and real-time event log.

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

node_modules/@webassemblyjs/ieee754/esm/index.js

@@ -0,0 +1,33 @@
+import { write, read } from "@xtuc/ieee754";
+/**
+ * According to https://webassembly.github.io/spec/binary/values.html#binary-float
+ * n = 32/8
+ */
+
+export var NUMBER_OF_BYTE_F32 = 4;
+/**
+ * According to https://webassembly.github.io/spec/binary/values.html#binary-float
+ * n = 64/8
+ */
+
+export var NUMBER_OF_BYTE_F64 = 8;
+export var SINGLE_PRECISION_MANTISSA = 23;
+export var DOUBLE_PRECISION_MANTISSA = 52;
+export function encodeF32(v) {
+  var buffer = [];
+  write(buffer, v, 0, true, SINGLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F32);
+  return buffer;
+}
+export function encodeF64(v) {
+  var buffer = [];
+  write(buffer, v, 0, true, DOUBLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F64);
+  return buffer;
+}
+export function decodeF32(bytes) {
+  var buffer = new Uint8Array(bytes);
+  return read(buffer, 0, true, SINGLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F32);
+}
+export function decodeF64(bytes) {
+  var buffer = new Uint8Array(bytes);
+  return read(buffer, 0, true, DOUBLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F64);
+}