• 新增 agent：omp（oh-my-pi）。可以在 magpie 里为它选模型；选择通过 magpie 的模型时，magpie 会作为免 key 供应商写入 ~/.omp/agent/models.yml，并设置 config.yml 的 modelRoles.default。其他角色和文件里的其他内容（包括注释）保持不变（#34）

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• New agent: omp (oh-my-pi). Its model is picked in magpie; a model through magpie adds magpie as a keyless provider in ~/.omp/agent/models.yml and sets config.yml's modelRoles.default, leaving other roles and the rest of both files (comments included) as they are (#34)