feat(opencode-go): route qwen3.7-max via anthropic_messages

qwen3.7-max on OpenCode Go rejects the OpenAI-compatible (oa-compat)
format with HTTP 401 but works correctly via the Anthropic Messages
endpoint (/v1/messages with x-api-key auth).  Route it the same way
MiniMax models are routed: anthropic_messages api_mode.

Changes:
- hermes_cli/models.py: add qwen3.7-max routing + curated list
- hermes_cli/setup.py: add to setup wizard model list
- hermes_cli/auth.py: update provider comment
- tests: add assertions for qwen3.7-max api_mode routing

hermes_cli/models.py

@@ -399,6 +399,7 @@ _PROVIDER_MODELS: dict[str, list[str]] = {
         "mimo-v2-omni",
         "minimax-m2.7",
         "minimax-m2.5",
+        "qwen3.7-max",
         "qwen3.6-plus",
         "qwen3.5-plus",
     ],
@@ -3015,6 +3016,8 @@ def opencode_model_api_mode(provider_id: Optional[str], model_id: Optional[str])
     if provider == "opencode-go":
         if normalized.startswith("minimax-"):
             return "anthropic_messages"
+        if normalized.startswith("qwen3.7-max"):
+            return "anthropic_messages"
         return "chat_completions"
 
     if provider == "opencode-zen":