added documentations, and sponsoser donate information

Author: metalusmonk

README.md

@@ -190,3 +190,18 @@ Apache License 2.0
 ## Disclaimer
 
 This tool is provided for informational and educational purposes only and does **not** constitute tax, legal, or financial advice.
+
+---
+
+## Support the Project
+
+If this tool saved you time, reduced stress, or helped you file crypto taxes with confidence,  
+consider supporting continued development.
+
+Support is **optional** and never required.
+
+- ⭐ Star the repository
+- 🧡 Sponsor via GitHub Sponsors
+- 💸 Optional crypto donation (ETH): 0xFaD5D317BBa40C2667F6455e2e9641CCe6131758
+Thank you for using and trusting this project.
+