feat: add native mac build script for darwin binaries

feat: scaffold standalone all-in-one pyinstaller binary build pipeline and bash provisioner

refactor: organize agent-node client code structure by moving core packages to src/ ...

- Moved agent_node, protos, and shared_core inside src/

- Updated Dockerfile, deployment scripts, compile_protos.sh, installers

- Updated bundle generation in ai-hub to reflect cleaner structure and better README

feat: implement real-time node monitoring and workspace initialization strategies