fix(honcho): drop anyOf schema — breaks Fireworks and other providers

The honcho_conclude tool schema used anyOf with nested required
fields which is unsupported by Fireworks AI, MiniMax, and other
providers that only handle basic JSON Schema. The handler already
validates that conclusion or delete_id is present (line 1018-1020),
so the schema constraint was redundant.

Replace with required: [] and let the handler reject bad calls.

plugins/memory/honcho/__init__.py

@@ -171,10 +171,7 @@ CONCLUDE_SCHEMA = {
                 "description": "Peer to query. Built-in aliases: 'user' (default), 'ai'. Or pass any peer ID from this workspace.",
             },
         },
-        "anyOf": [
+        "required": [],
-            {"required": ["conclusion"]},
-            {"required": ["delete_id"]},
-        ],
     },
 }