fix(sync): broadcast CLEANUP and PURGE instantly on session delete, update protobufs

Cleanup skill logic files and update deployment scripts

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