The headshot desk is built as a single web property served at headshotin.com. The choice is editorial, not technical. A web property can be updated, audited and versioned without forcing every reader to download a new installer. It also keeps the publication surface transparent — every page on the desk is reachable by URL and inspectable by the reader.
An installer would be a different surface with a different update cadence and a different trust model. The desk has decided not to maintain that surface. If a future version of the desk changes that decision, the change will be announced on the newsroom with a transition plan and a verification note.
For readers who want one-tap access on a phone, the recommended path is to add the site to the home screen. The shortcut opens the desk in a dedicated window with the same favicon the desk uses in the browser tab. The shortcut is offered by the phone, not by the desk, and it never asks for unusual device permissions.