Multiple agents/profiles running 'hermes honcho setup' all wrote to
the shared global ~/.honcho/config.json, overwriting each other's
configuration.
Root cause: _write_config() defaulted to resolve_config_path() which
returns the global path when no instance-local file exists yet (i.e.
on first setup).
Fix: _write_config() now defaults to _local_config_path() which always
returns $HERMES_HOME/honcho.json. Each profile gets its own config file.
Reading still falls back to global for cross-app interop and seeding.
Also updates cmd_setup and cmd_status messaging to show the actual
write path.
Includes 10 new tests verifying profile isolation, global fallback
reads, and multi-profile independence.
3d47af01c3