- All ClientManager methods (add_client, get_client, remove_client,
get_wait_time, is_server_full, is_client_timeout) now protected by
a threading.Lock
- cleanup() called outside the lock to avoid holding it during I/O
- is_server_full() computes wait time inline under lock instead of
calling get_wait_time() to avoid nested lock acquisition
- Added concurrent thread safety tests for add/remove and get operations
these new test cover issues such as thread safety, VAD thresholding,
message routing, error handling etc. that weren't covered by existing
tests. Mocking is used to avoid dependencies on GPU, ONNX etc.
Aaron Boxer