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/auth.py

@@ -402,6 +402,7 @@ PROVIDER_REGISTRY: Dict[str, ProviderConfig] = {
         # OpenCode Go mixes API surfaces by model:
         # - GLM / Kimi use OpenAI-compatible chat completions under /v1
         # - MiniMax models use Anthropic Messages under /v1/messages
+        # - Qwen 3.7 uses Anthropic Messages under /v1/messages
         # Keep the provider base at /v1 and select api_mode per-model.
         inference_base_url="https://opencode.ai/zen/go/v1",
         api_key_env_vars=("OPENCODE_GO_API_KEY",),