Cleanup skill logic files and update deployment scripts

refactor: remove hardcoded ai.jerxie.com references ...

- Dynamically generate CORS origins based on HUB_PUBLIC_URL.\n- Use window.location.origin in frontend provision scripts.\n- Set localhost/127.0.0.1 as default configurations for local nodes, docker-compose, and spawning scripts.

feat(agent): implement dynamic configuration reloading ...

- The Agent Node now actively reloads its config file during the heartbeat retry loop. \n- Supports both original flat YAML and nested 'cortex' token YAML.\n- Agent no longer caches its node_id or auth_token dynamically at startup, drastically improving resilience on edge.

feat(agent): change default FS_ROOT to '/' on Unix to fix NAS access ...

- Default FS_ROOT is now '/' instead of '~'.\n- Resolved traversal block for /volume1 paths on Synology.\n- Bumped agent version to 1.0.19.

fix(agent): resolve config path absolutely and ensure correct CWD for background processes

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