Replace hardcoded HERMES_COMMAND constant with resolveHermesCommand()
that checks UWF_HERMES_BIN first, falling back to 'hermes' via PATH.
This fixes environments where hermes is installed in a venv or
non-standard location that isn't in the non-login shell PATH
(e.g. ~/.local/bin symlink only available in login shell).
Refs #134
Replace the original 2-role debate with a 3-role version featuring:
- proponent/opponent/host roles (was: for/against)
- oneOf + const status routing (was: enum)
- Critical thinking framework in procedure (pre-speech reflection,
evidence discipline, anti-fragility)
- Bounded termination via Thread Progress (3rd speech → final)
- Host role for impartial summary and verdict
Based on xiaonuo's debate workflow design.
xiaoju