feat(opencode-go): add Kimi K2.6 and Qwen3.5/3.6 Plus to curated catalog (#13429)

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.

hermes_cli/models.py

@@ -292,6 +292,7 @@ _PROVIDER_MODELS: dict[str, list[str]] = {
         "big-pickle",
     ],
     "opencode-go": [
+        "kimi-k2.6",
         "kimi-k2.5",
         "glm-5.1",
         "glm-5",
@@ -299,6 +300,8 @@ _PROVIDER_MODELS: dict[str, list[str]] = {
         "mimo-v2-omni",
         "minimax-m2.7",
         "minimax-m2.5",
+        "qwen3.6-plus",
+        "qwen3.5-plus",
     ],
     "kilocode": [
         "anthropic/claude-opus-4.6",