perf: implement local file metadata hash cache for manifest generation and reconciliation

fix: block infinite sync loops by checking file hash before sending chunks

fix: ignore delayed macos on_deleted events from os.replace

chore: add watcher debug tracing

fix: resolve zero byte file sync breaking push loop iteration

fix: resolve file sync infinite bounce loop and unbound local variable bugs

fix: guard spurious .cortex_tmp/.cortex_lock DELETEs and add mesh delete broadcast ...

- watcher.py: on_deleted now filters .cortex_tmp/.cortex_lock files so that
  the os.replace() temp→final rename doesn't trigger a DELETE message to Hub
- grpc_server.py: Hub now rejects DELETE commands for temp/lock file paths
  instead of crashing with FileNotFoundError
- assistant.py: add broadcast_delete() so real file deletes from one node are
  propagated to all other session members, keeping the mesh in sync

fix(file_sync): check protobuf DESCRIPTOR to correctly detect total_chunks support for fast-path processing

feat(file_sync): introduce fast-path sync bypassing locks and shadow files for single-chunk transfers

Refactor browser service for parallel worker pool and deep research capabilities. Clean up redundant directories and fix potential path issues for .browser_data.

Fix macOS symlinked path resolution in watcher

Fix file sync issues and improve mirror stability

Cleanup skill logic files and update deployment scripts

Fix AI loop stalling and large file sync issues

fix(agent): use Optional type hint for Python 3.8 compatibility ...

- Fixes 'TypeError: unsupported operand type(s) for |' on Synology NAS.\n- Bumps version to 1.0.11 to trigger sync.

fix(agent): correct path to bootstrap_installer in updater ...

- Updated the relative path to 3 levels up to correctly find the bootstrapper in the agent-node root.\n- Bumping to 1.0.6.

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