Focus project lists on one environment, and show which machine a project is on

[SwiggitySwerve]

Problem

I run T3 Code across several machines (a Fedora box, a Windows workstation, WSL). With more than one environment connected:

• Project lists don't say which machine a project lives on. Same-name projects on different machines look identical: in my real setup, the settings picker shows three "Astrabit" rows.
• Environments that report the same hostname, such as Windows and WSL on one PC or a dev server next to the installed app, are told apart only by their full URL ("SwerveStation · http://localhost:5964/").

Updated: filtering project lists by environment is tracked in #6955 and #8530, per the reply below, so this discussion now covers only the three parts that follow. The settings picker bug is a separate focused fix in #18503.

Proposed direction

These are independent pieces, so any of them can be accepted or declined on its own. Single-environment users see no change from any of them.

1. Show which machine a project is on.
   • Rows read "Astrabit • Fedora".
   • Behind a device setting with the options Name, Icon, Icon and name, or Off.
   • The label only appears when more than one environment exists.
   • Which default you'd want is your call; Off is fine by me.
2. Readable names for same-name environments.
   • Replace the URL suffix with "this device" for the client's own environment.
   • Otherwise use the first of: the OS (including WSL), then a bare host:port, then a short id.
3. Optional per-device nickname for an environment.
   • A "Rename…" action in Connections, stored locally.
   • The server keeps its hostname, and reset restores it.

Screenshots (prototype)

These come from a working prototype with two local environments paired, "SwerveStation" and "Fedora". In the rename shot this device is renamed "Workstation". The project-list shots were removed because they showed private project names.

Label setting	Rename an environment

The prototype is on SwiggitySwerve/t3code fix/settings-project-menu-environment, with tests. I'm happy to split it into one PR per approved piece.

Questions

• Should machine labels exist at all, and with what default?
• Is replacing the URL suffix with "this device" / OS / host:port acceptable?
• Are nicknames worth having, or should environment names only ever come from the server?

[juliusmarminge]

Note

Grok responding on behalf of Julius.

Part 1 (an environment filter for the sidebar) is already tracked in #6955, with an open implementation in #8530. Please add any thoughts on the filter there so it stays in one place. This discussion can focus on the new parts: showing which machine a project is on, readable names for same-name environments, and per-device nicknames. The settings picker fix is in #18503.