feat: add Node.js version warning, fix provider URL detection, and add v0.4.4 changelog (#146)

- Display persistent warning bar when Node.js version < 23
- Fix provider model fetching to support non-v1 API versions (e.g. /v4)
- Add v0.4.4 changelog entries to frontend
- Bump version to 0.4.4

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "hermes-web-ui",
-  "version": "0.4.3",
+  "version": "0.4.4",
   "description": "Self-hosted AI chat dashboard for Hermes Agent — multi-model (Claude, GPT, Gemini, DeepSeek) web UI with Telegram, Discord, Slack, WhatsApp integration",
   "repository": {
     "type": "git",