Method sendToolMessages

app/src/utils/ModelManager.ts:774–803

* Tools-aware send path. Returns the full AssistantResponse (content + tool_calls + * finish_reason) so callers can drive native OpenAI function calling. * * Native function calling requires a capable remote model — local 2B watcher models * are not supported here. Mirrors sendMessages'

(
    modelName: string,
    messages: Array<{ role: string; content: any }>,
    tools: WireToolSpec[],
    token?: string,
    enableStreaming: boolean = false,
    onStreamChunk?: (chunk: string) => void,
    onReasoningChunk?: (chunk: string) => void
  )

   * models aren't returned by listModels but are valid on the Observer API).
   */
  public async sendToolMessages(
    modelName: string,
    messages: Array<{ role: string; content: any }>,
    tools: WireToolSpec[],
    token?: string,
    enableStreaming: boolean = false,
    onStreamChunk?: (chunk: string) => void,
    onReasoningChunk?: (chunk: string) => void
  ): Promise<AssistantResponse> {
    let modelsResponse = this.listModels();
    let model = modelsResponse.models.find(m => m.name === modelName);
    if (!model) {
      modelsResponse = await this.fetchModels();
      model = modelsResponse.models.find(m => m.name === modelName);
    }
    if (!model && !token) throw new Error(`Model '${modelName}' not found in available models`);

    const serverAddress = model ? model.server : 'https://api.observer-ai.com:443';

    if (this.isLocalModel(serverAddress)) {
      throw new Error('Tool calling is only available with cloud models. Please use Ob-Server or a remote inference server.');
    }

    if (serverAddress.includes('api.observer-ai.com') && token) {
      this.optimisticUpdateQuota();
    }
    const { fetchResponse } = await import('./sendApi');
    const params = { ...DEFAULT_INFERENCE_PARAMS, ...this.getModelParams(modelName) };
    return fetchResponse(serverAddress, messages, modelName, token, enableStreaming, onStreamChunk, params, onReasoningChunk, tools);
  }

  private optimisticUpdateQuota(): void {
    try {