refactor(reasoning)!: remove Node-RED engine and integrations

BREAKING CHANGE: NODE_RED reasoning is no longer supported. Unsupported
mode values fall back to PROXY. PROXY and OPENAI remain available.

s2s-client/s2s_client/models/responses.py

@@ -21,7 +21,7 @@ class ConfigResponse(OpenResponse):
     allowDirect: bool
     s2sUrl: str
     primaryPrompt: str
-    reasoningType: Literal["PROXY", "OPENAI", "NODE_RED"]
+    reasoningType: Literal["PROXY", "OPENAI"]
     injectProfile: bool
     debugPrompt: bool
     startSessionMode: str
@@ -69,13 +69,7 @@ class ToolInvocation(OpenResponse):
 
 class ReasoningResponse(OpenResponse):
     answer: str
-    log_only: bool | None = None
-    usage: Any = None
     usage_pass2: Any = None
-    latency_ms: Any = None
-    intent: Any = None
-    caller_profile_keys: Any = None
-    debug: Any = None
     apipilot_invoked: ToolInvocation | None = None