docs: add sponsor badge and support section to README

Author: sharon77242

README.md

@@ -2,6 +2,8 @@
 
 > **Privacy-first performance diagnostics for Node.js — minimum Node 14.18 as a compiled package, Node 22.6 for source/dev mode**
 
+[![Sponsor](https://img.shields.io/badge/Sponsor-%E2%9D%A4-pink?logo=github)](https://github.com/sponsors/sharon77242)
+
 ![Argus demo](docs/demo.gif)
 
 A lightweight agent that embeds directly into your application — silently tracking runtime behaviour, isolating bottlenecks, and mathematically sanitizing all context before exporting OpenTelemetry (OTLP) telemetry to your observability stack.
@@ -761,6 +763,12 @@ and cross-service correlation is in development.
 
 ---
 
+## Support
+
+If Argus saves you debugging time, consider [sponsoring the project](https://github.com/sponsors/sharon77242) ❤
+
+---
+
 ## License
 
 MIT