chore: update CHANGELOG.md and bump version to 0.5.0-alpha, highlighting analytics chart improvements and new export functionality

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pulse-frontend",
-  "version": "0.4.0-alpha",
+  "version": "0.5.0-alpha",
   "private": true,
   "scripts": {
     "dev": "next dev",
@@ -16,6 +16,7 @@
     "country-flag-icons": "^1.6.4",
     "d3-scale": "^4.0.2",
     "framer-motion": "^12.23.26",
+    "html-to-image": "^1.11.13",
     "i18n-iso-countries": "^7.14.0",
     "iso-3166-2": "^1.0.0",
     "jspdf": "^4.0.0",