ironrdp-agent: how to use the ironrdp-agent NOW feature?

How do I use `ironrdp-agent now`? does it require any server-side dependency to be installed before using it?

I've tried https://github.com/Devolutions/IronRDP/commit/dd058dda9f37f758678a3aa03a8ec43683069bf7 as:

```bash
cargo install --git https://github.com/Devolutions/IronRDP.git --rev dd058dda9f37f758678a3aa03a8ec43683069bf7 ironrdp-agent
ironrdp-agent \
daemon-start \
--skip-certificate-check
ironrdp-agent \
connect \
--server 192.168.8.22 \
--username Administrator \
--password password \
--prop desktopwidth:i:1280 \
--prop desktopheight:i:720
ironrdp-agent \
now \
capabilities
```

But it fails with the error:

```
now endpoint: NOW DVC endpoint did not become available within 30 seconds: No such file or directory (os error 2)
```

Start with the referenced commit and the ironrdp-agent now capabilities command, then reproduce the daemon-start, connect, and now sequence shown in the issue. Determine whether server-side setup is required and what causes the missing NOW DVC endpoint; done means documenting the prerequisites, command sequence, and explanation of the reported error.

Written by the indexing model from the issue text.