export const normalizeToolRequest = (payload: Record<string, unknown>): Record<string, unknown> => {  if (payload["functions"] && !payload["tools"] && Array.isArray(payload["functions"])) {    payload["tools"] = (payload["functions"] as Array<Record<string, unknown>>).map(      (functionDefinition) => ({        type: "function",        function: functionDefinition,      })    );    delete payload["functions"];  }  if (payload["tool_choice"] === "auto") {    delete payload["tool_choice"];  }  return payload;}; const collapseTextContentParts = (content: unknown): string | null => {  if (!Array.isArray(content)) {    return null;  }   const chunks: string[] = [];  for (const part of content) {    if (typeof part === "string") {      chunks.push(part);      continue;    }    if (!part || typeof part !== "object" || Array.isArray(part)) {      return null;    }     const record = part as Record<string, unknown>;    const type = typeof record["type"] === "string" ? record["type"] : "";    if (type !== "text" && type !== "input_text") {      return null;    }    const text = record["text"];    if (typeof text === "string") {      chunks.push(text);      continue;    }    return null;  }   return chunks.join("");}; export const normalizeChatMessageContentParts = (payload: Record<string, unknown>): boolean => {  const messages = payload["messages"];  if (!Array.isArray(messages)) {    return false;  }   let changed = false;  for (const message of messages) {    if (!message || typeof message !== "object" || Array.isArray(message)) {      continue;    }     const record = message as Record<string, unknown>;    const collapsed = collapseTextContentParts(record["content"]);    if (collapsed === null) {      continue;    }     record["content"] = collapsed;    changed = true;  }   return changed;};