feat(mesh): proactive session cleanup algorithm

feat(mesh): robust node connectivity and sync reliability fixes ...

- Fixed Node Registry persistence by adding missing db.commit() for online/offline status updates.
- Resolved 'Seed from Local' sync failures by correctly tracking mesh memberships in the TaskAssistant service.
- Enhanced frontend safety: disabled offline node selection and filtered source node candidates.
- Added 'Receiver Only' toggle for more granular control over multi-node synchronization.
- Corrected false-positive 'Source Node Disconnected' alert by verifying global connection status.
- Improved logging in Hub and Agent Nodes for better debugging of file transfer events.

feat: agent node mesh integration and UI polish

feat(mesh): implement Phase 6 Rich Health Metrics ...

- Enhanced agent-node to collect per-core CPU, frequency, available RAM, and load avg.
- Updated gRPC server to ingest and propagate rich health metrics via heartbeats.
- Updated Pydantic schemas to expose rich metrics in REST and WebSocket snapshots.
- Fixed UI tooltips in NodesPage.js to pop downwards and show detailed statistics.
- Fixed RegistrationResponse field mismatch (message -> error_message).
- Updated feature documentation for Agent Node Mesh.

Regenerate gRPC protos with task_id support

fix(grpc): fix relative imports in generated protos

feat(nodes): integrate live health into management tab and add unit-based hover tooltips

fix(fs): fix infinite loop in navigator and improve node error reporting

feat(fs): node-wide navigator, proactive sync, and polling for green dots

fix(fs): fix recursive creation/deletion and add sync status indicators

fix(agent): put agent on hub network and use service name for gRPC

fix(protos): regenerate Hub and Agent protos from project roots for absolute imports

chore(agent): remove duplicate proto files from root

fix(agent): sync proto missing task_id causing agent crash

fix: resolve 500 error in Node File Explorer by injecting orchestrator service and correlating task IDs in gRPC responses

feat: refine File System Navigator UI with terminal-like collapsible panel and folder icon toggle

Integrated FileSystemNavigator for Agent Node Mesh

feat(terminal): overhaul with xterm.js, raw TTY streaming, and dynamic resizing ...

- Replaced simulated terminal with xterm.js for native emulation
- Implemented raw TTY byte streaming over WebSockets
- Added support for persistent shell sessions and window resizing (ioctl TIOCSWINSZ)
- Improved SkillManager with a transparent TTY bypass to prevent thread pool saturation
- Added periodic heartbeat-based latency monitoring (RTT)
- Fixed skill_config parsing crash in AI Hub registry
- Enabled auto-scrolling and terminal-to-PTY grid synchronization

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