When the TUI backend (tui_gateway/entry.py) is spawned by Node.js with the
user's CWD containing a local utils/ directory, that directory shadows the
installed utils module, causing ImportError in run_agent and hermes_cli.
Strip '' and '.' from sys.path and prepend HERMES_PYTHON_SRC_ROOT (already
set by hermes_cli before spawning the subprocess) so installed packages
always win over CWD artifacts.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
