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: canonicalizeFunction(functionDefinition),      }),    );    delete payload["functions"];  }   const tools = payload["tools"];  if (Array.isArray(tools)) {    payload["tools"] = tools      .map((tool) => {        if (!tool || typeof tool !== "object" || Array.isArray(tool)) {          return tool;        }        const toolRecord = tool as Record<string, unknown>;        const functionDefinition = toolRecord["function"];        if (          functionDefinition &&          typeof functionDefinition === "object" &&          !Array.isArray(functionDefinition)        ) {          return {            ...toolRecord,            function: canonicalizeFunction(functionDefinition as Record<string, unknown>),          };        }        return tool;      })      .sort((left, right) => {        const leftName = getFunctionName(left);        const rightName = getFunctionName(right);        if (leftName === null && rightName === null) {          return 0;        }        if (leftName === null) {          return 1;        }        if (rightName === null) {          return -1;        }        return leftName.localeCompare(rightName);      });  }   if (payload["tool_choice"] === "auto") {    delete payload["tool_choice"];  }  return payload;}; const canonicalizeFunction = (  functionDefinition: Record<string, unknown>,): Record<string, unknown> => {  const rest: Record<string, unknown> = {};  for (const key of Object.keys(functionDefinition)) {    if (key !== "name" && key !== "description" && key !== "parameters") {      rest[key] = functionDefinition[key];    }  }   const canonical: Record<string, unknown> = {};  if ("name" in functionDefinition) {    canonical["name"] = functionDefinition["name"];  }  if ("description" in functionDefinition) {    canonical["description"] = functionDefinition["description"];  }  if ("parameters" in functionDefinition) {    canonical["parameters"] = functionDefinition["parameters"];  }  for (const key of Object.keys(rest).sort()) {    canonical[key] = rest[key];  }  return canonical;}; const getFunctionName = (tool: unknown): string | null => {  if (!tool || typeof tool !== "object" || Array.isArray(tool)) {    return null;  }  const toolRecord = tool as Record<string, unknown>;  const functionDefinition = toolRecord["function"];  if (    !functionDefinition ||    typeof functionDefinition !== "object" ||    Array.isArray(functionDefinition)  ) {    return null;  }  const name = (functionDefinition as Record<string, unknown>)["name"];  return typeof name === "string" ? name : null;}; 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;};