chore: import upstream snapshot with attribution

runtime/node/agent/thinking/builtin_thinking.py

@@ -0,0 +1,26 @@
+"""Register built-in thinking modes."""
+
+from entity.configs.node.thinking import ReflectionThinkingConfig, ThinkingConfig
+from runtime.node.agent.thinking.thinking_manager import ThinkingManagerBase
+from runtime.node.agent.thinking.self_reflection import SelfReflectionThinkingManager
+from runtime.node.agent.thinking.registry import (
+    register_thinking_mode,
+    get_thinking_registration,
+)
+
+register_thinking_mode(
+    "reflection",
+    config_cls=ReflectionThinkingConfig,
+    manager_cls=SelfReflectionThinkingManager,
+    summary="LLM reflects on its output and refine its output",
+)
+
+
+class ThinkingManagerFactory:
+    @staticmethod
+    def get_thinking_manager(config: ThinkingConfig) -> ThinkingManagerBase:
+        registration = get_thinking_registration(config.type)
+        typed_config = config.as_config(registration.config_cls)
+        if not typed_config:
+            raise ValueError(f"Invalid thinking config for type '{config.type}'")
+        return registration.manager_cls(typed_config)