Production hardening, Python SDK, cross-process TCP

What's new:

• Python SDK with pip install omnimesh (PyO3 bindings)
• Cross-process TCP communication (lightweight + production modes)
• Graceful shutdown, health checks, condvar-based efficient polling
• ROS 2 bridge (geometry_msgs/Twist, diagnostics, vision_msgs)
• UDP gossip multi-packet fragmentation fix
• 138 Rust tests + 21 Python tests passing
• Professional documentation for both Rust and Python

v1.0.0 — Production Release

Publish release