feat(runner): support auth_type for model configuration

- Add ModelSpec dataclass to hold model name and optional auth_type
- Update RunConfig.models to use List[ModelSpec]
- Add auth_type field to RunRecord with serialization support
- Parse models from config as string or {name, auth_type} dict
- Pass --auth-type flag to qwen command when specified

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

integration-tests/concurrent-runner/config.example.json

@@ -31,5 +31,9 @@
       ]
     }
   ],
-  "models": ["claude-3-5-sonnet-20241022", "qwen3-coder-plus"]
+  "models": [
+    "qwen3-coder-plus",
+    { "name": "glm-4.7", "auth_type": "anthropic" },
+    { "name": "claude-4-5-sonnet-20260219", "auth_type": "anthropic" }
+  ]
 }