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refactor: 清理 13 处生产死代码
为什么：用 AST 级引用分析（而非文本 grep——同名符号会互相掩盖）确认这些 符号全项目零引用。文本 grep 查不出的原因是它们都有「活着的同名兄弟」： services/downloads.py（共 6 个，93 行） _parse_cookie_str / _global_music_u / _vip_name / _detect_vip / _admin_client / _user_client —— 活的是 core.media.parse_cookie_str、web/routers/music.py、account.py 的版本 随之失效的 import：USER_COOKIE_FILE / GLOBAL_MUSIC_U_CACHE / VIP_PROBE_LOCK / account_info / detect_vip_by_probe / QRLoginClient services/api_service.py APIResponse 类（29 行）—— web/response.py 才是活的响应封装 services/_shared.py _rate_ok —— 逐字复制 web.ratelimit.rate_ok core/utils.py safe_int / safe_console_print —— 活的是 web/request_utils.safe_int core/repo.py all_settings / get_user_by_name —— auth_system.get_user_by_name 才是活的 core/db.py / web/auth_state.py / web/request_utils.py execute_many / _safe_register_credits + secrets_rand / dedup_ids 结果：生产代码死代码候选 13 → 0（余下 118 个全是 pytest 测试函数，属正常）。
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@@ -1,5 +1,8 @@
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# -*- coding: utf-8 -*-
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"""单曲下载、账号探测与任务交付。
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"""单曲下载任务 worker：下载 → 打包 → 交付 → 结算。
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账号探测（VIP/音质）与二维码登录客户端均已迁出（前者只剩 web.routers.account
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的异步实现，后者只剩 web.routers.admin 自己的客户端），本模块只负责单曲任务。
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"""
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import os
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@@ -10,21 +13,11 @@ import zipfile
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from pathlib import Path
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import auth_system
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from core.config import (
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USER_COOKIE_FILE,
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)
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from core.state import (
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DOWNLOAD_TASKS,
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DOWNLOAD_TASKS_LOCK,
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)
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from core.state import GLOBAL_MUSIC_U_CACHE as _GLOBAL_MUSIC_U_CACHE
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from core.state import VIP_PROBE_LOCK as _VIP_PROBE_LOCK
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from core.utils import format_lyric as _format_lyric
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from music_api import (
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account_info,
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detect_vip_by_probe,
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)
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from music_api.qr_client import QRLoginClient
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from music_downloader import (
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DownloadCanceled,
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DownloadException,
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@@ -43,84 +36,6 @@ from .api_service import (
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)
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def _parse_cookie_str(raw) -> dict[str, str]:
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"""将 'k=v;k2=v2' 格式的 Cookie 字符串解析为字典"""
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cookies: dict[str, str] = {}
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if not raw:
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return cookies
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for part in str(raw).split(';'):
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if '=' in part:
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k, v = part.strip().split('=', 1)
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if k:
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cookies[k] = v
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return cookies
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# _GLOBAL_MUSIC_U_CACHE 已迁出至 core.state（此处 import 同名共享）
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def _global_music_u() -> str:
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"""全局账号 MUSIC_U（5 分钟缓存；后台重新扫码后自动跟随新值）"""
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now = time.time()
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if _GLOBAL_MUSIC_U_CACHE['v'] is None or now - _GLOBAL_MUSIC_U_CACHE['ts'] > 300:
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try:
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ck = api_service._get_cookies()
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_GLOBAL_MUSIC_U_CACHE['v'] = (ck.get('MUSIC_U') or '').strip()
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except Exception:
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_GLOBAL_MUSIC_U_CACHE['v'] = ''
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_GLOBAL_MUSIC_U_CACHE['ts'] = now
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# 契约返回 str：缓存未命中且读取失败时 v 会是 None，统一收敛为空串
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return _GLOBAL_MUSIC_U_CACHE['v'] or ''
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def _vip_name(vip_type: int) -> str:
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"""根据 vipType 返回会员类型名称（兼容新旧取值）"""
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return {
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0: '普通用户',
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1: '音乐包',
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11: '黑胶VIP',
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100: '黑胶VIP',
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10: '黑胶SVIP',
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110: '黑胶SVIP'
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}.get(vip_type, '普通用户')
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def _detect_vip(cookies: dict[str, str]) -> tuple[int, str, list[str]]:
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"""检测账号会员类型与可解析音质：
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优先账号接口（vipType 精确），并始终用音质探测接口实测可解析列表。
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探测单飞锁（有界等待 0.5s）——上游黑洞时并发请求不再各自串行
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8 级探测（最坏 16 分钟线程滞留），等锁超时者直接用账号接口给降级结果"""
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if not _VIP_PROBE_LOCK.acquire(timeout=0.5):
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info = account_info(cookies)
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if info:
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return info.get('vipType', 0), 'account', []
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return 0, 'probe', []
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try:
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probe = detect_vip_by_probe(cookies)
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levels_ok = probe.get('levels_ok', [])
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info = account_info(cookies)
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if info:
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return info.get('vipType', 0), 'account', levels_ok
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return probe.get('vip_type', 0), 'probe', levels_ok
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finally:
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_VIP_PROBE_LOCK.release()
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# ============ 管理员设置（二维码登录 / Cookie 管理） ============
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def _admin_client() -> QRLoginClient:
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"""创建二维码登录客户端（基于 cookie.txt）"""
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return QRLoginClient()
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# ============ 个人歌单（游客扫码登录自己的账号） ============
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def _user_client() -> QRLoginClient:
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"""创建个人用户二维码登录客户端（后不再落盘 user_cookie.txt，
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USER_COOKIE_FILE 仅作 QRLoginClient 构造参数遗留）"""
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return QRLoginClient(USER_COOKIE_FILE)
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def _task_delivery_copy(task_id: str, src: Path, filename: str) -> str:
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"""把共享缓存文件复制/硬链接为任务专属交付文件（任务成果与共享缓存分离，
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任何任务的清理都不会再删掉别的任务的成果）"""
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