OpenCode Go's published model list (opencode.ai/docs/go) includes kimi-k2.6,
qwen3.5-plus, and qwen3.6-plus, but Hermes' curated lists didn't carry them.
When the live /models probe fails during `hermes model`, users fell back to
the stale curated list and had to type newer models via 'Enter custom model
name'.
Adds kimi-k2.6 (now first in the Go list), qwen3.6-plus, and qwen3.5-plus
to both the model picker (hermes_cli/models.py) and setup defaults
(hermes_cli/setup.py). All routed through the existing opencode-go
chat_completions path — no api_mode changes needed.