@jcksnftsn, the Raspberry Pi agent is meant to run as a systemctl daemon. Will you please confirm it's running with this command?
systemctl status triggercmdagent
Hopefully you'll see this as part of that output:
Active: active (running) since ....
Only your "background" commands will be runnable because the daemon runs the agent in background mode. The agent will ignore attempts to run the foreground commands.
The easiest background command to test that comes with the default commands.json file is this one:
{"trigger":"Reboot","command":"shutdown -r","ground":"background","voice":"reboot","allowParams": "false"},
Notice that command's ground value is background.
That one is easy to test because it's easy to observe your Raspberry Pi rebooting.
Please tell me if that works, and what you want to try next.
EDIT 2/8/25: I fixed the Raspberry Pi .deb installer. Now the triggercmdagent command works again. Thanks again for reporting that issue.