"""
千问：附件文本 mode 壳。
"""

from __future__ import annotations

from typing import Any

from agent.llm.modes import LlmMode

MODE = LlmMode.ATTACHMENT_TEXT


def mode_meta() -> dict[str, Any]:
    return {
        "mode": MODE.value,
        "provider": "qwen",
        "purpose": "attachment_text",
        "implemented": False,
    }


def invoke_shell(*, payload: dict[str, Any]) -> dict[str, Any]:
    return {
        "ok": False,
        "stub": True,
        "mode": MODE.value,
        "error": "attachment_text_shell_not_implemented",
        "echo_keys": sorted(payload.keys()),
    }