This is taken from #4201

Step 3. Add a timeout parameter to the coder_agent resource
After the specified duration of inactivity, the UI and CLI would display that something wrong happened. Templates can define a debug_url parameter in their front-matter that can direct users to a help page.

After the timeout, the agent can go from Connecting to Disconnected

This debug_url can be surfaced in the dashboard/CLI to make it easy for admins to troubleshoot a timed-out workspace. For larger deployments, an admin could edit the template README and change debug_url to an internal wiki/chat/ticketing system so users can request help. Perhaps the debug URL could also be surfaced for failed builds as well