fix(sync): memory exhaust on large file mesh broadcast by enforcing synchronous stream backpressure, increasing chunk size to 4MB, and bounding priority queues

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: cat() on deleted file returns instantly instead of timing out ...

Root cause: two separate silent-failure bugs caused 15s stalls on file-not-found:

1. agent-node/node.py _push_file(): when a READ arrives for a missing file,
   silently returned without sending any response. The Hub journal sat waiting
   for the full 15s timeout.
   Fix: send ERROR SyncStatus back immediately with task_id so the journal
   resolves at once.

2. ai-hub/assistant.py cat(): after the mirror fast-path found no file, it
   fell through and sent a READ gRPC to the node anyway, compounding the wait.
   Fix: short-circuit with {error: File not found} when the file is absent
   from the session mirror — no node round-trip needed.

test: added Case 9 (TestSmallFileSync) — asserts that cat() on a freshly
deleted file resolves in < 3s on both nodes (guard against regression).

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 terminal PTY hang from thread crash

Auto-kill all child zombie processes during orphaned instance cleanup on startup

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

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): implement resilient auth handshake loop ...

- The Agent Node will no longer crash and exit if the initial token validation fails or the Orchestrator API is unavailable.\n- Replaced sys.exit(1) on SyncConfiguration rejection with a 5-second sleep and retry loop.\n- This allows nodes to transparently recover once a user dynamically updates their background config with the correct token.

fix(mesh): resolve synology shell bug + bandwidth throttle ...

- Changed mesh-terminal-control to fallback to /bin/sh if bash is missing.\n- Added ~25MB/s bandwidth throttle to Hub/Node file sync to prevent gRPC streaming timeouts.\n- Bumped agent version to 1.0.20.

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.

feat(agent): support FS_ROOT awareness in chat sessions to fix Nas access ...

- Updated Agent to allow out-of-session file access if path is within FS_ROOT.\n- Bumped agent version to 1.0.18.

feat(agent): implement 'unbrickable' recovery mode ...

- Moves core imports into the retry loop to survive import-time crashes.\n- Ensures the background HTTP updater stays alive even if the main node logic fails.\n- Bumps version to 1.0.17.

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

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.

fix(agent): enable INFO logging and bump to v1.0.3 ...

- Unified logging to stdout so update progress is visible in agent.out.log.\n- Triggering update to v1.0.3.

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