Build a small "overview of what is running" in this working folder, with made-up agents only: no network, no real accounts.
Each agent leaves a small note with its name, task, status and time. An overview reads all the notes, puts the agents that need
attention at the top, and flags an agent that is silent longer than its own limit, that reports an error, or that has no note at
all. It also writes a simple page I can open on my phone.

Limits: only the agent writes its note and only the overview reads; touch nothing outside this folder.

Let me set the clock by hand, test it with four agents (one silent, one in error, one missing), and show me the result.
