Function ensureAssistantToolCallMessage

packages/bot/src/run-loop.ts:120–151

(
  agent: AbstractAgent,
  calls: ReadonlyArray<CapturedToolCall>,
)

 * so the next `runAgent` sees a valid transcript even on backends that don't.
 */
export function ensureAssistantToolCallMessage(
  agent: AbstractAgent,
  calls: ReadonlyArray<CapturedToolCall>,
): void {
  const messages = agent.messages;
  const last = messages[messages.length - 1];
  const lastIsAssistantWithCalls =
    last !== undefined &&
    last.role === "assistant" &&
    Array.isArray(last.toolCalls);

  if (lastIsAssistantWithCalls) {
    const existing = (last.toolCalls ?? []).map((tc) => tc.id);
    const allPresent = calls.every((c) => existing.includes(c.toolCallId));
    if (allPresent) return;
  }

  const assistant: Message = {
    id: `${calls[0]!.toolCallId}-assistant`,
    role: "assistant",
    content: "",
    toolCalls: calls.map((c) => ({
      id: c.toolCallId,
      type: "function" as const,
      function: {
        name: c.toolCallName,
        arguments: JSON.stringify(c.toolCallArgs),
      },
    })),
  };
  agent.addMessage(assistant);
}

export function pushToolResult(
  agent: AbstractAgent,