v2.5.1

LibEmiddle v2.5.1 - Documentation & Refactoring Release

🎯 Overview

Documentation and code quality release addressing user feedback about the mailbox transport system.

✨ What's New

📚 Comprehensive Documentation

• NEW: Mailbox Transport Guide - 500+ line complete guide
• NEW: Message Flow Diagrams - Visual Mermaid sequence diagrams
• Enhanced README with dedicated transport section and examples

🔧 Code Improvements

• Refactored polling logic, eliminated ~120 lines of duplicate code
• Created StartPollingLoopAsync() helper in BaseMailboxTransport
• Improved maintainability across transport implementations

⚠️ Important Clarifications

• WebRTC Transport: Clarified as stub only (not production-ready), planned for v3.0
• Updated all documentation to reflect accurate feature status

✅ Compatibility

Fully backward compatible with v2.5.0 - Drop-in replacement, no code changes needed!

📊 Testing

• ✅ All 275 tests passing (improved from 273 baseline)
• ✅ No breaking changes
• ✅ No new failures