[Bug]: Open in offers only VS Code over SSH when the saved environment is the same Mac #18473

Before submitting

• I searched existing issues and did not find a duplicate (closest: [Bug]: Open in → Finder in the file preview runs open <file>, so the file opens in its default app instead of Finder #16954, [Bug]: A chat link to a folder outside the workspace opens a failing file preview #15215).
• I included enough detail to reproduce or investigate the problem.

Area

apps/desktop, apps/web

Setup

T3 Code 0.0.45 on macOS. The server runs as a background service on the same Mac (127.0.0.1:3773). The desktop app
has Local environment turned off and connects to that service as a saved environment, so the app and the server
share one database instead of the app starting a second server.

Steps to reproduce

1. Settings → turn off Local environment; add a saved environment at http://127.0.0.1:3773 on the same Mac.
2. Open any thread and click the chevron next to Open in the header.

Expected behavior

Since the environment is the machine the app is running on, Open in offers the same targets as a local environment:
Finder and any installed editors, opening the path directly.

Actual behavior

The menu has one entry: "VS Code - Opens over SSH. Needs your key on ". Finder is not offered, and with no
VS Code installed there is no way to open the folder from T3. The same applies to file and folder chips in chat:
right-click offers only "Copy relative path" and "Copy full path", with no "Reveal in file manager" (the workaround
#15215 mentions for folder chips).

Suggestion

Treat a saved environment whose host is loopback (or whose server reports the same machine ID as the desktop app)
as local for Open in.