Initial commit: CloudView generic networked point-cloud viewer

Standalone Open3D viewer that listens on a TCP/Unix socket and renders NDJSON point-cloud streams from any producer. Decoupled server/protocol/store layers (no Open3D dependency, testable headless) plus a lazy Open3D render loop.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

main.py

@@ -0,0 +1,7 @@
+#!/usr/bin/env python3
+"""Entry point for the CloudView point-cloud viewer."""
+
+from cloudview.app import main
+
+if __name__ == "__main__":
+    main()