Not always online capsules

[Omar Polo]

Alice <lia@loveisanalogue.info> writes:

> On 22 September 2021 08:52:37 BST, Omar Polo <op@omarpolo.com> wrote:
>>
>>Love the idea, I'm tempting to drafting something in my client ^^"
>
> Awesome !

I gave it a shot.

	https://tmp.omarpolo.com/telescope-offline-dns.png

the code is https://git.omarpolo.com/telescope/ in the
proposal/offline-dns-message branch.  To be honest, I've optimized the
code for "quick to write" rather than quality, and so I haven't
committed it to the main branch.  Needs some further polishing,
improvements and documentation, but it's working a demo.

Following Chris advice, I picked a "well-known" subdomain _offline (I
liked it more than _gemini_parameter).

Cheers,

Omar Polo