ProductBoard

If there is a coder_app in a template, allow the coder open CLI command to open an app. It should use the default browser.

For example, if my workspace is claude-win and I want to open the code-server app:

coder open claude-win code-server

Refer to createAppLinkHref for how the frontend does the links in the dashboard.

Keep in mind that different templates have different apps, so the help text here needs to support any generic app name. @coder