feat(bot): GigaChat function-calling provider for the chat agent; never 500 on provider errors

OpenRouter returns 403 «Access denied by security policy» from the RF server, and parsing that string error crashed the request (500 instead of the fallback answer). Error parsing is robust now and any agent exception degrades to the extractive answer. GigaChat tool provider (GigaChat-2-Pro by default) converts the agent's OpenAI-style history to function_call / role=function; auto mode prefers GigaChat when credentials are set. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-04 15:46:21 +03:00
parent bc044650ac
commit ade93d959b
4 changed files with 169 additions and 8 deletions
@@ -35,6 +35,7 @@ class Settings(BaseSettings):
    openrouter_api_key: str = ""
    openrouter_model: str = "google/gemini-2.5-flash-lite"
    openrouter_base_url: str = "https://openrouter.ai/api/v1"
+    gigachat_agent_model: str = "GigaChat-2-Pro"  # function calling quality matters more than price here
    chat_agent_timeout_s: float = 25.0
    chat_agent_max_steps: int = 5