feat: 阶段 2 - /usage/consume、pending 授权惰性激活
- usage.py: POST /usage/consume,事务内校验会话(严格 device_id)、 激活 pending、按 time/points 分支扣减;失败返回 ok:false + reason - 积分扣减用条件 UPDATE 原子完成,status 赋值写在自减之前 (MySQL SET 从左到右求值,否则 IF 读到已减 1 的值,判空差 1) - 时间授权 usage_logs 按 (user_id, device_id) 60 秒节流;积分每次必写 - auth.py: 新增 activate_pending_authorization(),失效 active 后 FIFO 激活 pending,时间授权按原时长从当前时刻重新锚定 - get_status/handle_scan 接入惰性激活;get_status 改事务包裹 - _get_active_authorization/_serialize_authorization 改公开供 usage 复用 - config/.env.example: 新增 USAGE_LOG_THROTTLE_SECONDS
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@@ -30,3 +30,5 @@ REDIS_PASSWORD = os.getenv("REDIS_PASSWORD", "")
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FREE_AUTH_DAYS = int(os.getenv("FREE_AUTH_DAYS", "7")) # 首次关注赠送天数
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SCENE_TTL_SECONDS = int(os.getenv("SCENE_TTL_SECONDS", "300")) # 二维码/scene 有效期(秒)
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SESSION_TTL_HOURS = int(os.getenv("SESSION_TTL_HOURS", "24")) # session_token 有效期(小时)
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# 时间授权 usage_logs 节流窗口(秒):同一用户+设备在此窗口内只记一条
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USAGE_LOG_THROTTLE_SECONDS = int(os.getenv("USAGE_LOG_THROTTLE_SECONDS", "60"))
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