The app's terminal prints production's address and the newest open preview, gated like the pill #6047

Intent: the terminal reaches the other side of the app, as the page's pill does after #5851.

Done:

• [ ] the app's terminal (src/apps/tty.ts / its Deploys screen) shows "Production: <url>" in a preview and "Newest preview: #N <title> <url>" on production, from the same module the pill uses (src/apps/side.ts)
• [ ] the preview line is shown only to someone who may read its pull, as on the page
• [ ] a test drives the screen as a reader and as a guest

Files: src/apps/tty.ts or src/tui/screens/deploys.ts, a test. Risk: waits for #5851 so the module exists once.

#6076 was split. This waits for #6268 now, the server half that gates the other side to readers, because "gated like the pill" means that gate.

Parked by the steward, 2026-10-26 (owner: "get us unclogged now then resume everything else"). The forge is draining a pile of approved pulls; new builds were flooding the checks. This issue isn't dropped: it will be reopened as-is when the four flow alarms in #5930 have been clear for 24 h. The list is kept in the steward's parked-2026-10-26 file.