STATE
App enters background应用进入后台
importance · process state
03 ／ Diagnostic logger诊断记录
Unraveller of All Reason析构万理
Diagnostic logger系统诊断记录
Observe the system. Record the evidence.观察系统，记录证据。
by YubeGreenYubeGreen 制作
SESSION24—08—31 / 02:16
- CPUawake
- APPbackground
- DOZEidle
- FCMreceived
- WAKEevidence
Position定位
Luonnatar
changes.改变系统状态。
↗Unraveller析构万理
observes.观察并记录。
A diagnostic tool should not keep the app alive or alter the test environment. Doing so would contaminate the evidence it is meant to collect.诊断工具不应主动保活，也不应改变测试环境；否则，它会污染自己试图收集的证据。
Timeline时间轴
Leave a trail that can be examined later.留下一条事后仍可检查的轨迹。
The aim is not to guess why Android stopped a background process. It is to collect enough ordered evidence to make the next analysis grounded.目标不是猜测 Android 为什么停止了后台进程，而是收集足够多、顺序明确的证据，让之后的分析有所依据。
SYSTEM
Device enters idle设备进入空闲状态
doze · freeze · suspend
NETWORK
Connectivity changes网络连接发生变化
network · VPN · route
EVENT
Message and notification evidence消息与通知证据
GMS · FCM · notification timing
Evidence证据
Several signals. One ordered record.多种信号，一份有序记录。
CPU & suspend
Wake-related evidence and device power transitions.唤醒相关证据与设备电源状态变化。
Doze & freeze
The states surrounding delayed background work.围绕后台任务延迟发生的系统状态。
Network & VPN
Connectivity and route changes in the same timeline.在同一时间轴中记录连接与路由变化。
GMS, FCM & notification
Arrival, handling, and visible notification timing.消息到达、处理与通知可见时间。
Principle原则
Observe without becoming the experiment.观察，但不让观察者成为实验本身。
Structured, timestamped, and intentionally quiet: a record for understanding background behavior after it happens.结构化、带时间戳，并且刻意保持安静：为事后理解后台行为留下记录。
Unraveller of All ReasonUnraveller of All Reason / 析构万理
Available on GitHub.已在 GitHub 提供。