Merge branch 'main' of github.com:NousResearch/hermes-agent into feat/ink-refactor

run_agent.py

@@ -641,6 +641,9 @@ class AIAgent:
             prefill_messages (List[Dict]): Messages to prepend to conversation history as prefilled context.
                 Useful for injecting a few-shot example or priming the model's response style.
                 Example: [{"role": "user", "content": "Hi!"}, {"role": "assistant", "content": "Hello!"}]
+                NOTE: Anthropic Sonnet 4.6+ and Opus 4.6+ reject a conversation that ends on an
+                assistant-role message (400 error).  For those models use structured outputs or
+                output_config.format instead of a trailing-assistant prefill.
             platform (str): The interface platform the user is on (e.g. "cli", "telegram", "discord", "whatsapp").
                 Used to inject platform-specific formatting hints into the system prompt.
             skip_context_files (bool): If True, skip auto-injection of SOUL.md, AGENTS.md, and .cursorrules