feat: Remove deprecated test files and enhance documentation for version 3.3.0 "Nexus Infinitum"

- Deleted obsolete test files: test_mime.go, test_mime_integration.go, and xmpp_client_upload_diagnosis.ipynb.
- Updated README.md to reflect the new version 3.3.0 "Nexus Infinitum" and its features.
- Added comprehensive release notes for version 3.3.0 detailing major enhancements and installation instructions.
- Introduced cleanup script to remove development artifacts while preserving production files.

ejabberd-module/INSTALLATION_GUIDE.md

@@ -17,7 +17,7 @@ This module enables seamless file uploads in XMPP clients by integrating ejabber
 ### Step 1: Install HMAC File Server 3.2.2
 ```bash
 # Download and install HMAC File Server
-wget https://github.com/your-repo/hmac-file-server/releases/v3.2.2/hmac-file-server-linux-amd64
+wget https://git.uuxo.net/uuxo/hmac-file-server/releases/v3.3.0/hmac-file-server-linux-amd64
 chmod +x hmac-file-server-linux-amd64
 sudo mv hmac-file-server-linux-amd64 /usr/local/bin/hmac-file-server
 

ejabberd-module/README.md

@@ -285,7 +285,8 @@ sudo systemctl start ejabberd
 ### Development Setup
 ```bash
 # Clone repository
-git clone https://github.com/PlusOne/hmac-file-server.git
+```bash
+git clone https://git.uuxo.net/uuxo/hmac-file-server.git
 cd hmac-file-server/ejabberd-module
 
 # Test compilation
@@ -301,8 +302,8 @@ Same as HMAC File Server - see main repository LICENSE file.
 
 ## 🆘 Support
 
-- **Issues**: [GitHub Issues](https://github.com/PlusOne/hmac-file-server/issues)
-- **Discussions**: [GitHub Discussions](https://github.com/PlusOne/hmac-file-server/discussions)  
+- **Issues**: [Git Issues](https://git.uuxo.net/uuxo/hmac-file-server/issues)
+- **Discussions**: [Git Discussions](https://git.uuxo.net/uuxo/hmac-file-server/discussions)  
 - **XMPP Chat**: `hmac-support@conference.example.org`
 
 ---