Two root causes behind HackRF showing as unavailable when tools are installed:
1. get_tool_path() didn't search /usr/local/bin on Linux. HackRF tools built
from source (as in the Dockerfile) land there, but the path wasn't checked
when sudo/service environments have a restricted PATH.
2. check_hackrf() only tested hackrf_transfer, but the health check tests
hackrf_info — both come from the same apt package but a user could have one
visible and not the other. Now either binary confirms the tools are present.
hackrf_transfer is still required for actual RX/TX operations.
Fixes#212
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
James Smith
58222b3474