Function execute_action_tool 

pub async fn execute_action_tool(
    conn: &mut PgConnection,
    app_config: &ApplicationConfiguration,
    tool_call: &ChatbotConversationMessageToolCall,
    answer: &ClientToolAnswer,
    user_context: &ChatbotTurnContext,
) -> ChatbotResult<ActionToolOutcome>

Runs the confirmed (or records the declined) action tool call the LLM asked for.

tool_call’s row id is stored on the audit row so it traces back to the conversation. The tool’s category and its call requirements are both re-checked here, immediately before the mutation, rather than trusted from whatever planned the call: the proof ConfirmableActionTool::execute requires can only be minted by that check.

Fails with ChatbotErrorType::InvalidToolAnswer when answer is not a ConfirmAnswer, with ChatbotErrorType::ToolUseError when the caller may no longer use the tool, and with ChatbotErrorType::InvalidToolName when no action tool goes by tool_call’s name. A declined answer never touches the database beyond what the caller writes for the closed call itself, and needs no authorization of its own.